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[PATCH] maint: run 'make update-copyright'


From: Simon Josefsson
Subject: [PATCH] maint: run 'make update-copyright'
Date: Sun, 01 Jan 2023 01:21:05 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/28.2 (gnu/linux)

Hi.  I was seeing CI/CD failures shortly after midnight:

copyright_check
./gnulib/lib/version-etc.c
maint.mk: out of date copyright in ./gnulib/lib/version-etc.c; update it

I have pushed the patch below to work around the problem.

I wonder how timezone-safe this is -- maybe some other test will now
fail for someone in the US before it actually becomes midnight there?

/Simon
From 32a72f45374c9a36afa574d1a08bb98090270012 Mon Sep 17 00:00:00 2001
From: Simon Josefsson <simon@josefsson.org>
Date: Sun, 1 Jan 2023 01:14:21 +0100
Subject: [PATCH] maint: run 'make update-copyright'

---
 ChangeLog                                            | 2 +-
 MODULES.html.sh                                      | 2 +-
 Makefile                                             | 2 +-
 all-modules                                          | 2 +-
 build-aux/announce-gen                               | 2 +-
 build-aux/bootstrap                                  | 2 +-
 build-aux/bootstrap.conf                             | 2 +-
 build-aux/config.libpath                             | 2 +-
 build-aux/config.rpath                               | 2 +-
 build-aux/csharpcomp.sh.in                           | 2 +-
 build-aux/csharpexec.sh.in                           | 2 +-
 build-aux/declared.sh                                | 2 +-
 build-aux/do-release-commit-and-tag                  | 2 +-
 build-aux/gendocs.sh                                 | 6 +++---
 build-aux/git-version-gen                            | 2 +-
 build-aux/gitlog-to-changelog                        | 2 +-
 build-aux/gnu-web-doc-update                         | 2 +-
 build-aux/gnupload                                   | 2 +-
 build-aux/increment-serial                           | 2 +-
 build-aux/install-reloc                              | 2 +-
 build-aux/javacomp.sh.in                             | 2 +-
 build-aux/javaexec.sh.in                             | 2 +-
 build-aux/ldd.sh.in                                  | 2 +-
 build-aux/libtool-next-version                       | 2 +-
 build-aux/libtool-reloc                              | 2 +-
 build-aux/mktempd                                    | 2 +-
 build-aux/move-if-change                             | 2 +-
 build-aux/ncftpput-ftp                               | 2 +-
 build-aux/pmccabe.css                                | 2 +-
 build-aux/pmccabe2html                               | 2 +-
 build-aux/po/Makefile.in.in                          | 2 +-
 build-aux/po/remove-potcdate.sin                     | 2 +-
 build-aux/prefix-gnulib-mk                           | 2 +-
 build-aux/reloc-ldflags                              | 2 +-
 build-aux/relocatable.pl.in                          | 2 +-
 build-aux/relocatable.sh.in                          | 2 +-
 build-aux/run-test                                   | 2 +-
 build-aux/snippet/link-warning.h                     | 2 +-
 build-aux/update-copyright                           | 2 +-
 build-aux/useless-if-before-free                     | 2 +-
 build-aux/vc-list-files                              | 2 +-
 build-aux/vcs-to-changelog.py                        | 2 +-
 build-aux/vcstocl/frontend_c.py                      | 2 +-
 build-aux/vcstocl/misc_util.py                       | 2 +-
 build-aux/vcstocl/projectquirks.py                   | 2 +-
 build-aux/vcstocl/vcs_git.py                         | 2 +-
 build-aux/x-to-1.in                                  | 2 +-
 check-AC_LIBOBJ                                      | 2 +-
 check-copyright                                      | 2 +-
 check-module                                         | 2 +-
 config/argz.mk                                       | 2 +-
 config/srclist-update                                | 2 +-
 config/srclistvars.sh                                | 2 +-
 doc/Makefile                                         | 2 +-
 doc/acl-resources.txt                                | 2 +-
 doc/alloca-opt.texi                                  | 2 +-
 doc/alloca.texi                                      | 2 +-
 doc/attribute.texi                                   | 2 +-
 doc/c-ctype.texi                                     | 2 +-
 doc/c-strcase.texi                                   | 2 +-
 doc/c-strcaseeq.texi                                 | 2 +-
 doc/c-strcasestr.texi                                | 2 +-
 doc/c-strstr.texi                                    | 2 +-
 doc/c-strtod.texi                                    | 2 +-
 doc/c-strtold.texi                                   | 2 +-
 doc/containers.texi                                  | 2 +-
 doc/extern-inline.texi                               | 2 +-
 doc/gcd.texi                                         | 2 +-
 doc/gendocs_template                                 | 2 +-
 doc/gendocs_template_min                             | 2 +-
 doc/gnulib-readme.texi                               | 2 +-
 doc/gnulib-tool.texi                                 | 2 +-
 doc/gnulib.texi                                      | 2 +-
 doc/intprops.texi                                    | 2 +-
 doc/join-gnu.texi                                    | 2 +-
 doc/lib-symbol-visibility.texi                       | 2 +-
 doc/noreturn.texi                                    | 2 +-
 doc/parse-datetime.texi                              | 2 +-
 doc/progname.texi                                    | 2 +-
 doc/quote.texi                                       | 2 +-
 doc/regexprops-generic.texi                          | 2 +-
 doc/solaris-versions                                 | 2 +-
 doc/static-inline.texi                               | 2 +-
 doc/vcs-to-changelog.texi                            | 2 +-
 doc/verify.texi                                      | 2 +-
 doc/xstdopen.texi                                    | 2 +-
 gnulib-tool                                          | 2 +-
 gnulib-tool.py                                       | 2 +-
 lib/_Exit.c                                          | 2 +-
 lib/_Noreturn.h                                      | 2 +-
 lib/accept.c                                         | 2 +-
 lib/accept4.c                                        | 2 +-
 lib/access.c                                         | 2 +-
 lib/acl-errno-valid.c                                | 2 +-
 lib/acl-internal.c                                   | 2 +-
 lib/acl-internal.h                                   | 2 +-
 lib/acl.h                                            | 2 +-
 lib/acl_entries.c                                    | 2 +-
 lib/acosf.c                                          | 2 +-
 lib/acosl.c                                          | 2 +-
 lib/af_alg.c                                         | 2 +-
 lib/af_alg.h                                         | 2 +-
 lib/alignalloc.c                                     | 2 +-
 lib/alignalloc.h                                     | 2 +-
 lib/aligned-malloc.h                                 | 2 +-
 lib/aligned_alloc.c                                  | 2 +-
 lib/alignof.h                                        | 2 +-
 lib/alloca.in.h                                      | 2 +-
 lib/allocator.c                                      | 2 +-
 lib/allocator.h                                      | 2 +-
 lib/alphasort.c                                      | 2 +-
 lib/amemxfrm.c                                       | 2 +-
 lib/amemxfrm.h                                       | 2 +-
 lib/anytostr.c                                       | 2 +-
 lib/arcfour.c                                        | 2 +-
 lib/arcfour.h                                        | 2 +-
 lib/arctwo.c                                         | 2 +-
 lib/arctwo.h                                         | 2 +-
 lib/areadlink-with-size.c                            | 2 +-
 lib/areadlink.c                                      | 2 +-
 lib/areadlink.h                                      | 2 +-
 lib/areadlinkat-with-size.c                          | 2 +-
 lib/areadlinkat.c                                    | 2 +-
 lib/arg-nonnull.h                                    | 2 +-
 lib/argmatch.c                                       | 2 +-
 lib/argmatch.h                                       | 2 +-
 lib/argp-ba.c                                        | 2 +-
 lib/argp-eexst.c                                     | 2 +-
 lib/argp-fmtstream.c                                 | 2 +-
 lib/argp-fmtstream.h                                 | 2 +-
 lib/argp-fs-xinl.c                                   | 2 +-
 lib/argp-help.c                                      | 2 +-
 lib/argp-namefrob.h                                  | 2 +-
 lib/argp-parse.c                                     | 2 +-
 lib/argp-pin.c                                       | 2 +-
 lib/argp-pv.c                                        | 2 +-
 lib/argp-pvh.c                                       | 2 +-
 lib/argp-version-etc.c                               | 2 +-
 lib/argp-version-etc.h                               | 2 +-
 lib/argp-xinl.c                                      | 2 +-
 lib/argp.h                                           | 2 +-
 lib/argv-iter.c                                      | 2 +-
 lib/argv-iter.h                                      | 2 +-
 lib/argz.c                                           | 2 +-
 lib/argz.in.h                                        | 2 +-
 lib/arpa_inet.in.h                                   | 2 +-
 lib/array-mergesort.h                                | 2 +-
 lib/asinf.c                                          | 2 +-
 lib/asinl.c                                          | 2 +-
 lib/asnprintf.c                                      | 2 +-
 lib/asprintf.c                                       | 2 +-
 lib/assert.in.h                                      | 2 +-
 lib/assure.h                                         | 2 +-
 lib/astrxfrm.c                                       | 2 +-
 lib/astrxfrm.h                                       | 2 +-
 lib/asyncsafe-spin.c                                 | 2 +-
 lib/asyncsafe-spin.h                                 | 2 +-
 lib/at-func.c                                        | 2 +-
 lib/at-func2.c                                       | 2 +-
 lib/atan2f.c                                         | 2 +-
 lib/atanf.c                                          | 2 +-
 lib/atoll.c                                          | 2 +-
 lib/attribute.h                                      | 2 +-
 lib/backup-find.c                                    | 2 +-
 lib/backup-internal.h                                | 2 +-
 lib/backup-rename.c                                  | 2 +-
 lib/backupfile.c                                     | 2 +-
 lib/backupfile.h                                     | 2 +-
 lib/base32.c                                         | 2 +-
 lib/base32.h                                         | 2 +-
 lib/base64.c                                         | 2 +-
 lib/base64.h                                         | 2 +-
 lib/basename-lgpl.c                                  | 2 +-
 lib/basename-lgpl.h                                  | 2 +-
 lib/basename.c                                       | 2 +-
 lib/bcopy.c                                          | 2 +-
 lib/binary-io.c                                      | 2 +-
 lib/binary-io.h                                      | 2 +-
 lib/bind.c                                           | 2 +-
 lib/bitrotate.c                                      | 2 +-
 lib/bitrotate.h                                      | 2 +-
 lib/bitset.c                                         | 2 +-
 lib/bitset.h                                         | 2 +-
 lib/bitset/array.c                                   | 2 +-
 lib/bitset/array.h                                   | 2 +-
 lib/bitset/base.h                                    | 2 +-
 lib/bitset/list.c                                    | 2 +-
 lib/bitset/list.h                                    | 2 +-
 lib/bitset/stats.c                                   | 2 +-
 lib/bitset/stats.h                                   | 2 +-
 lib/bitset/table.c                                   | 2 +-
 lib/bitset/table.h                                   | 2 +-
 lib/bitset/vector.c                                  | 2 +-
 lib/bitset/vector.h                                  | 2 +-
 lib/bitsetv.c                                        | 2 +-
 lib/bitsetv.h                                        | 2 +-
 lib/btoc32.c                                         | 2 +-
 lib/btowc.c                                          | 2 +-
 lib/byteswap.in.h                                    | 2 +-
 lib/c++defs.h                                        | 2 +-
 lib/c-asprintf.c                                     | 2 +-
 lib/c-ctype.c                                        | 2 +-
 lib/c-ctype.h                                        | 2 +-
 lib/c-dtoastr.c                                      | 2 +-
 lib/c-ldtoastr.c                                     | 2 +-
 lib/c-snprintf.c                                     | 2 +-
 lib/c-snprintf.h                                     | 2 +-
 lib/c-stack.c                                        | 2 +-
 lib/c-stack.h                                        | 2 +-
 lib/c-strcase.h                                      | 2 +-
 lib/c-strcasecmp.c                                   | 2 +-
 lib/c-strcaseeq.h                                    | 2 +-
 lib/c-strcasestr.c                                   | 2 +-
 lib/c-strcasestr.h                                   | 2 +-
 lib/c-strncasecmp.c                                  | 2 +-
 lib/c-strstr.c                                       | 2 +-
 lib/c-strstr.h                                       | 2 +-
 lib/c-strtod.c                                       | 2 +-
 lib/c-strtod.h                                       | 2 +-
 lib/c-strtold.c                                      | 2 +-
 lib/c-vasnprintf.c                                   | 2 +-
 lib/c-vasnprintf.h                                   | 2 +-
 lib/c-vasprintf.c                                    | 2 +-
 lib/c-vasprintf.h                                    | 2 +-
 lib/c-vsnprintf.c                                    | 2 +-
 lib/c-vsnprintf.h                                    | 2 +-
 lib/c-xasprintf.c                                    | 2 +-
 lib/c-xvasprintf.c                                   | 2 +-
 lib/c-xvasprintf.h                                   | 2 +-
 lib/c32is-impl.h                                     | 2 +-
 lib/c32isalnum.c                                     | 2 +-
 lib/c32isalpha.c                                     | 2 +-
 lib/c32isblank.c                                     | 2 +-
 lib/c32iscntrl.c                                     | 2 +-
 lib/c32isdigit.c                                     | 2 +-
 lib/c32isgraph.c                                     | 2 +-
 lib/c32islower.c                                     | 2 +-
 lib/c32isprint.c                                     | 2 +-
 lib/c32ispunct.c                                     | 2 +-
 lib/c32isspace.c                                     | 2 +-
 lib/c32isupper.c                                     | 2 +-
 lib/c32isxdigit.c                                    | 2 +-
 lib/c32rtomb.c                                       | 2 +-
 lib/c32snrtombs.c                                    | 2 +-
 lib/c32srtombs-state.c                               | 2 +-
 lib/c32srtombs.c                                     | 2 +-
 lib/c32stombs.c                                      | 2 +-
 lib/c32tob.c                                         | 2 +-
 lib/calloc.c                                         | 2 +-
 lib/canon-host.c                                     | 2 +-
 lib/canon-host.h                                     | 2 +-
 lib/canonicalize-lgpl.c                              | 2 +-
 lib/canonicalize.c                                   | 2 +-
 lib/canonicalize.h                                   | 2 +-
 lib/careadlinkat.c                                   | 2 +-
 lib/careadlinkat.h                                   | 2 +-
 lib/cbrt.c                                           | 2 +-
 lib/cbrtf.c                                          | 2 +-
 lib/cbrtl.c                                          | 2 +-
 lib/cdefs.h                                          | 2 +-
 lib/ceil.c                                           | 2 +-
 lib/ceilf.c                                          | 2 +-
 lib/ceill.c                                          | 2 +-
 lib/chdir-long.c                                     | 2 +-
 lib/chdir-long.h                                     | 2 +-
 lib/check-version.c                                  | 2 +-
 lib/check-version.h                                  | 2 +-
 lib/chmod.c                                          | 2 +-
 lib/chmodat.c                                        | 2 +-
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 lib/unictype/bidi_of.c                               | 2 +-
 lib/unictype/bidi_test.c                             | 2 +-
 lib/unictype/bitmap.h                                | 2 +-
 lib/unictype/block_test.c                            | 2 +-
 lib/unictype/blocks.c                                | 2 +-
 lib/unictype/categ_C.c                               | 2 +-
 lib/unictype/categ_Cc.c                              | 2 +-
 lib/unictype/categ_Cf.c                              | 2 +-
 lib/unictype/categ_Cn.c                              | 2 +-
 lib/unictype/categ_Co.c                              | 2 +-
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 lib/unictype/categ_L.c                               | 2 +-
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 lib/unictype/categ_Ll.c                              | 2 +-
 lib/unictype/categ_Lm.c                              | 2 +-
 lib/unictype/categ_Lo.c                              | 2 +-
 lib/unictype/categ_Lt.c                              | 2 +-
 lib/unictype/categ_Lu.c                              | 2 +-
 lib/unictype/categ_M.c                               | 2 +-
 lib/unictype/categ_Mc.c                              | 2 +-
 lib/unictype/categ_Me.c                              | 2 +-
 lib/unictype/categ_Mn.c                              | 2 +-
 lib/unictype/categ_N.c                               | 2 +-
 lib/unictype/categ_Nd.c                              | 2 +-
 lib/unictype/categ_Nl.c                              | 2 +-
 lib/unictype/categ_No.c                              | 2 +-
 lib/unictype/categ_P.c                               | 2 +-
 lib/unictype/categ_Pc.c                              | 2 +-
 lib/unictype/categ_Pd.c                              | 2 +-
 lib/unictype/categ_Pe.c                              | 2 +-
 lib/unictype/categ_Pf.c                              | 2 +-
 lib/unictype/categ_Pi.c                              | 2 +-
 lib/unictype/categ_Po.c                              | 2 +-
 lib/unictype/categ_Ps.c                              | 2 +-
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 lib/unictype/categ_So.c                              | 2 +-
 lib/unictype/categ_Z.c                               | 2 +-
 lib/unictype/categ_Zl.c                              | 2 +-
 lib/unictype/categ_Zp.c                              | 2 +-
 lib/unictype/categ_Zs.c                              | 2 +-
 lib/unictype/categ_and.c                             | 2 +-
 lib/unictype/categ_and_not.c                         | 2 +-
 lib/unictype/categ_byname.c                          | 2 +-
 lib/unictype/categ_byname.gperf                      | 2 +-
 lib/unictype/categ_longname.c                        | 2 +-
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 lib/unictype/categ_of.c                              | 2 +-
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 lib/unictype/categ_test.c                            | 2 +-
 lib/unictype/combiningclass.c                        | 2 +-
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 lib/unictype/ctype_alnum.c                           | 2 +-
 lib/unictype/ctype_alpha.c                           | 2 +-
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 lib/unictype/ctype_cntrl.c                           | 2 +-
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 lib/unictype/decdigit.c                              | 2 +-
 lib/unictype/digit.c                                 | 2 +-
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 lib/unictype/joiningtype_byname.c                    | 2 +-
 lib/unictype/joiningtype_byname.gperf                | 2 +-
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 lib/unictype/joiningtype_of.c                        | 2 +-
 lib/unictype/mirror.c                                | 2 +-
 lib/unictype/numeric.c                               | 2 +-
 lib/unictype/pr_alphabetic.c                         | 2 +-
 lib/unictype/pr_ascii_hex_digit.c                    | 2 +-
 lib/unictype/pr_bidi_arabic_digit.c                  | 2 +-
 lib/unictype/pr_bidi_arabic_right_to_left.c          | 2 +-
 lib/unictype/pr_bidi_block_separator.c               | 2 +-
 lib/unictype/pr_bidi_boundary_neutral.c              | 2 +-
 lib/unictype/pr_bidi_common_separator.c              | 2 +-
 lib/unictype/pr_bidi_control.c                       | 2 +-
 lib/unictype/pr_bidi_embedding_or_override.c         | 2 +-
 lib/unictype/pr_bidi_eur_num_separator.c             | 2 +-
 lib/unictype/pr_bidi_eur_num_terminator.c            | 2 +-
 lib/unictype/pr_bidi_european_digit.c                | 2 +-
 lib/unictype/pr_bidi_hebrew_right_to_left.c          | 2 +-
 lib/unictype/pr_bidi_left_to_right.c                 | 2 +-
 lib/unictype/pr_bidi_non_spacing_mark.c              | 2 +-
 lib/unictype/pr_bidi_other_neutral.c                 | 2 +-
 lib/unictype/pr_bidi_pdf.c                           | 2 +-
 lib/unictype/pr_bidi_segment_separator.c             | 2 +-
 lib/unictype/pr_bidi_whitespace.c                    | 2 +-
 lib/unictype/pr_byname.c                             | 2 +-
 lib/unictype/pr_byname.gperf                         | 2 +-
 lib/unictype/pr_case_ignorable.c                     | 2 +-
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 lib/unictype/pr_changes_when_casefolded.c            | 2 +-
 lib/unictype/pr_changes_when_casemapped.c            | 2 +-
 lib/unictype/pr_changes_when_lowercased.c            | 2 +-
 lib/unictype/pr_changes_when_titlecased.c            | 2 +-
 lib/unictype/pr_changes_when_uppercased.c            | 2 +-
 lib/unictype/pr_combining.c                          | 2 +-
 lib/unictype/pr_composite.c                          | 2 +-
 lib/unictype/pr_currency_symbol.c                    | 2 +-
 lib/unictype/pr_dash.c                               | 2 +-
 lib/unictype/pr_decimal_digit.c                      | 2 +-
 lib/unictype/pr_default_ignorable_code_point.c       | 2 +-
 lib/unictype/pr_deprecated.c                         | 2 +-
 lib/unictype/pr_diacritic.c                          | 2 +-
 lib/unictype/pr_emoji.c                              | 2 +-
 lib/unictype/pr_emoji_component.c                    | 2 +-
 lib/unictype/pr_emoji_modifier.c                     | 2 +-
 lib/unictype/pr_emoji_modifier_base.c                | 2 +-
 lib/unictype/pr_emoji_presentation.c                 | 2 +-
 lib/unictype/pr_extended_pictographic.c              | 2 +-
 lib/unictype/pr_extender.c                           | 2 +-
 lib/unictype/pr_format_control.c                     | 2 +-
 lib/unictype/pr_grapheme_base.c                      | 2 +-
 lib/unictype/pr_grapheme_extend.c                    | 2 +-
 lib/unictype/pr_grapheme_link.c                      | 2 +-
 lib/unictype/pr_hex_digit.c                          | 2 +-
 lib/unictype/pr_hyphen.c                             | 2 +-
 lib/unictype/pr_id_continue.c                        | 2 +-
 lib/unictype/pr_id_start.c                           | 2 +-
 lib/unictype/pr_ideographic.c                        | 2 +-
 lib/unictype/pr_ids_binary_operator.c                | 2 +-
 lib/unictype/pr_ids_trinary_operator.c               | 2 +-
 lib/unictype/pr_ignorable_control.c                  | 2 +-
 lib/unictype/pr_iso_control.c                        | 2 +-
 lib/unictype/pr_join_control.c                       | 2 +-
 lib/unictype/pr_left_of_pair.c                       | 2 +-
 lib/unictype/pr_line_separator.c                     | 2 +-
 lib/unictype/pr_logical_order_exception.c            | 2 +-
 lib/unictype/pr_lowercase.c                          | 2 +-
 lib/unictype/pr_math.c                               | 2 +-
 lib/unictype/pr_non_break.c                          | 2 +-
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 lib/unictype/pr_numeric.c                            | 2 +-
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 lib/unictype/pr_other_default_ignorable_code_point.c | 2 +-
 lib/unictype/pr_other_grapheme_extend.c              | 2 +-
 lib/unictype/pr_other_id_continue.c                  | 2 +-
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 lib/unictype/pr_other_uppercase.c                    | 2 +-
 lib/unictype/pr_paired_punctuation.c                 | 2 +-
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 lib/unictype/pr_quotation_mark.c                     | 2 +-
 lib/unictype/pr_radical.c                            | 2 +-
 lib/unictype/pr_regional_indicator.c                 | 2 +-
 lib/unictype/pr_sentence_terminal.c                  | 2 +-
 lib/unictype/pr_soft_dotted.c                        | 2 +-
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 lib/unictype/pr_titlecase.c                          | 2 +-
 lib/unictype/pr_unassigned_code_value.c              | 2 +-
 lib/unictype/pr_unified_ideograph.c                  | 2 +-
 lib/unictype/pr_uppercase.c                          | 2 +-
 lib/unictype/pr_variation_selector.c                 | 2 +-
 lib/unictype/pr_white_space.c                        | 2 +-
 lib/unictype/pr_xid_continue.c                       | 2 +-
 lib/unictype/pr_xid_start.c                          | 2 +-
 lib/unictype/pr_zero_width.c                         | 2 +-
 lib/unictype/scripts.c                               | 2 +-
 lib/unictype/sy_c_ident.c                            | 2 +-
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 lib/unictype/sy_java_whitespace.c                    | 2 +-
 lib/unigbrk.in.h                                     | 2 +-
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 lib/unigbrk/u32-grapheme-breaks.c                    | 2 +-
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 tests/unigbrk/test-uc-grapheme-breaks.c              | 2 +-
 tests/unigbrk/test-uc-is-grapheme-break.c            | 2 +-
 tests/unigbrk/test-ulc-grapheme-breaks.c             | 2 +-
 tests/unilbrk/test-u16-possible-linebreaks.c         | 2 +-
 tests/unilbrk/test-u16-width-linebreaks.c            | 2 +-
 tests/unilbrk/test-u32-possible-linebreaks.c         | 2 +-
 tests/unilbrk/test-u32-width-linebreaks.c            | 2 +-
 tests/unilbrk/test-u8-possible-linebreaks.c          | 2 +-
 tests/unilbrk/test-u8-width-linebreaks.c             | 2 +-
 tests/unilbrk/test-ulc-possible-linebreaks.c         | 2 +-
 tests/unilbrk/test-ulc-width-linebreaks.c            | 2 +-
 tests/uniname/test-uninames.c                        | 2 +-
 tests/uninorm/test-canonical-decomposition.c         | 2 +-
 tests/uninorm/test-compat-decomposition.c            | 2 +-
 tests/uninorm/test-composition.c                     | 2 +-
 tests/uninorm/test-decomposing-form.c                | 2 +-
 tests/uninorm/test-decomposition.c                   | 2 +-
 tests/uninorm/test-nfc.c                             | 2 +-
 tests/uninorm/test-nfd.c                             | 2 +-
 tests/uninorm/test-nfkc.c                            | 2 +-
 tests/uninorm/test-nfkd.c                            | 2 +-
 tests/uninorm/test-u16-nfc.c                         | 2 +-
 tests/uninorm/test-u16-nfd.c                         | 2 +-
 tests/uninorm/test-u16-nfkc.c                        | 2 +-
 tests/uninorm/test-u16-nfkd.c                        | 2 +-
 tests/uninorm/test-u16-normcmp.c                     | 2 +-
 tests/uninorm/test-u16-normcmp.h                     | 2 +-
 tests/uninorm/test-u16-normcoll.c                    | 2 +-
 tests/uninorm/test-u32-nfc-big.c                     | 2 +-
 tests/uninorm/test-u32-nfc.c                         | 2 +-
 tests/uninorm/test-u32-nfd-big.c                     | 2 +-
 tests/uninorm/test-u32-nfd.c                         | 2 +-
 tests/uninorm/test-u32-nfkc-big.c                    | 2 +-
 tests/uninorm/test-u32-nfkc.c                        | 2 +-
 tests/uninorm/test-u32-nfkd-big.c                    | 2 +-
 tests/uninorm/test-u32-nfkd.c                        | 2 +-
 tests/uninorm/test-u32-normalize-big.c               | 2 +-
 tests/uninorm/test-u32-normalize-big.h               | 2 +-
 tests/uninorm/test-u32-normcmp.c                     | 2 +-
 tests/uninorm/test-u32-normcmp.h                     | 2 +-
 tests/uninorm/test-u32-normcoll.c                    | 2 +-
 tests/uninorm/test-u8-nfc.c                          | 2 +-
 tests/uninorm/test-u8-nfd.c                          | 2 +-
 tests/uninorm/test-u8-nfkc.c                         | 2 +-
 tests/uninorm/test-u8-nfkd.c                         | 2 +-
 tests/uninorm/test-u8-normcmp.c                      | 2 +-
 tests/uninorm/test-u8-normcmp.h                      | 2 +-
 tests/uninorm/test-u8-normcoll.c                     | 2 +-
 tests/uninorm/test-uninorm-filter-nfc.c              | 2 +-
 tests/unistdio/test-u16-asnprintf1.c                 | 2 +-
 tests/unistdio/test-u16-asnprintf1.h                 | 2 +-
 tests/unistdio/test-u16-printf1.h                    | 2 +-
 tests/unistdio/test-u16-vasnprintf1.c                | 2 +-
 tests/unistdio/test-u16-vasnprintf2.c                | 2 +-
 tests/unistdio/test-u16-vasnprintf3.c                | 2 +-
 tests/unistdio/test-u16-vasprintf1.c                 | 2 +-
 tests/unistdio/test-u16-vsnprintf1.c                 | 2 +-
 tests/unistdio/test-u16-vsprintf1.c                  | 2 +-
 tests/unistdio/test-u32-asnprintf1.c                 | 2 +-
 tests/unistdio/test-u32-asnprintf1.h                 | 2 +-
 tests/unistdio/test-u32-printf1.h                    | 2 +-
 tests/unistdio/test-u32-vasnprintf1.c                | 2 +-
 tests/unistdio/test-u32-vasnprintf2.c                | 2 +-
 tests/unistdio/test-u32-vasnprintf3.c                | 2 +-
 tests/unistdio/test-u32-vasprintf1.c                 | 2 +-
 tests/unistdio/test-u32-vsnprintf1.c                 | 2 +-
 tests/unistdio/test-u32-vsprintf1.c                  | 2 +-
 tests/unistdio/test-u8-asnprintf1.c                  | 2 +-
 tests/unistdio/test-u8-asnprintf1.h                  | 2 +-
 tests/unistdio/test-u8-printf1.h                     | 2 +-
 tests/unistdio/test-u8-vasnprintf1.c                 | 2 +-
 tests/unistdio/test-u8-vasnprintf2.c                 | 2 +-
 tests/unistdio/test-u8-vasnprintf3.c                 | 2 +-
 tests/unistdio/test-u8-vasprintf1.c                  | 2 +-
 tests/unistdio/test-u8-vsnprintf1.c                  | 2 +-
 tests/unistdio/test-u8-vsprintf1.c                   | 2 +-
 tests/unistdio/test-ulc-asnprintf1.c                 | 2 +-
 tests/unistdio/test-ulc-asnprintf1.h                 | 2 +-
 tests/unistdio/test-ulc-printf1.h                    | 2 +-
 tests/unistdio/test-ulc-vasnprintf1.c                | 2 +-
 tests/unistdio/test-ulc-vasnprintf2.c                | 2 +-
 tests/unistdio/test-ulc-vasnprintf3.c                | 2 +-
 tests/unistdio/test-ulc-vasprintf1.c                 | 2 +-
 tests/unistdio/test-ulc-vsnprintf1.c                 | 2 +-
 tests/unistdio/test-ulc-vsprintf1.c                  | 2 +-
 tests/unistr/test-chr.h                              | 2 +-
 tests/unistr/test-cmp.h                              | 2 +-
 tests/unistr/test-cmp2.h                             | 2 +-
 tests/unistr/test-cpy-alloc.h                        | 2 +-
 tests/unistr/test-cpy.h                              | 2 +-
 tests/unistr/test-move.h                             | 2 +-
 tests/unistr/test-set.h                              | 2 +-
 tests/unistr/test-stpcpy.h                           | 2 +-
 tests/unistr/test-stpncpy.h                          | 2 +-
 tests/unistr/test-strcat.h                           | 2 +-
 tests/unistr/test-strchr.h                           | 2 +-
 tests/unistr/test-strcmp.h                           | 2 +-
 tests/unistr/test-strcpy.h                           | 2 +-
 tests/unistr/test-strdup.h                           | 2 +-
 tests/unistr/test-strncat.h                          | 2 +-
 tests/unistr/test-strncmp.h                          | 2 +-
 tests/unistr/test-strncpy.h                          | 2 +-
 tests/unistr/test-strnlen.h                          | 2 +-
 tests/unistr/test-u-strstr.h                         | 2 +-
 tests/unistr/test-u-strtok.h                         | 2 +-
 tests/unistr/test-u16-check.c                        | 2 +-
 tests/unistr/test-u16-chr.c                          | 2 +-
 tests/unistr/test-u16-cmp.c                          | 2 +-
 tests/unistr/test-u16-cmp2.c                         | 2 +-
 tests/unistr/test-u16-cpy-alloc.c                    | 2 +-
 tests/unistr/test-u16-cpy.c                          | 2 +-
 tests/unistr/test-u16-mblen.c                        | 2 +-
 tests/unistr/test-u16-mbsnlen.c                      | 2 +-
 tests/unistr/test-u16-mbtouc-unsafe.c                | 2 +-
 tests/unistr/test-u16-mbtouc.c                       | 2 +-
 tests/unistr/test-u16-mbtouc.h                       | 2 +-
 tests/unistr/test-u16-mbtoucr.c                      | 2 +-
 tests/unistr/test-u16-move.c                         | 2 +-
 tests/unistr/test-u16-next.c                         | 2 +-
 tests/unistr/test-u16-prev.c                         | 2 +-
 tests/unistr/test-u16-set.c                          | 2 +-
 tests/unistr/test-u16-stpcpy.c                       | 2 +-
 tests/unistr/test-u16-stpncpy.c                      | 2 +-
 tests/unistr/test-u16-strcat.c                       | 2 +-
 tests/unistr/test-u16-strchr.c                       | 2 +-
 tests/unistr/test-u16-strcmp.c                       | 2 +-
 tests/unistr/test-u16-strcmp.h                       | 2 +-
 tests/unistr/test-u16-strcoll.c                      | 2 +-
 tests/unistr/test-u16-strcpy.c                       | 2 +-
 tests/unistr/test-u16-strdup.c                       | 2 +-
 tests/unistr/test-u16-strlen.c                       | 2 +-
 tests/unistr/test-u16-strmblen.c                     | 2 +-
 tests/unistr/test-u16-strmbtouc.c                    | 2 +-
 tests/unistr/test-u16-strncat.c                      | 2 +-
 tests/unistr/test-u16-strncmp.c                      | 2 +-
 tests/unistr/test-u16-strncpy.c                      | 2 +-
 tests/unistr/test-u16-strnlen.c                      | 2 +-
 tests/unistr/test-u16-strstr.c                       | 2 +-
 tests/unistr/test-u16-strtok.c                       | 2 +-
 tests/unistr/test-u16-to-u32.c                       | 2 +-
 tests/unistr/test-u16-to-u8.c                        | 2 +-
 tests/unistr/test-u16-uctomb.c                       | 2 +-
 tests/unistr/test-u32-check.c                        | 2 +-
 tests/unistr/test-u32-chr.c                          | 2 +-
 tests/unistr/test-u32-cmp.c                          | 2 +-
 tests/unistr/test-u32-cmp2.c                         | 2 +-
 tests/unistr/test-u32-cpy-alloc.c                    | 2 +-
 tests/unistr/test-u32-cpy.c                          | 2 +-
 tests/unistr/test-u32-mblen.c                        | 2 +-
 tests/unistr/test-u32-mbsnlen.c                      | 2 +-
 tests/unistr/test-u32-mbtouc-unsafe.c                | 2 +-
 tests/unistr/test-u32-mbtouc.c                       | 2 +-
 tests/unistr/test-u32-mbtouc.h                       | 2 +-
 tests/unistr/test-u32-mbtoucr.c                      | 2 +-
 tests/unistr/test-u32-move.c                         | 2 +-
 tests/unistr/test-u32-next.c                         | 2 +-
 tests/unistr/test-u32-prev.c                         | 2 +-
 tests/unistr/test-u32-set.c                          | 2 +-
 tests/unistr/test-u32-stpcpy.c                       | 2 +-
 tests/unistr/test-u32-stpncpy.c                      | 2 +-
 tests/unistr/test-u32-strcat.c                       | 2 +-
 tests/unistr/test-u32-strchr.c                       | 2 +-
 tests/unistr/test-u32-strcmp.c                       | 2 +-
 tests/unistr/test-u32-strcmp.h                       | 2 +-
 tests/unistr/test-u32-strcoll.c                      | 2 +-
 tests/unistr/test-u32-strcpy.c                       | 2 +-
 tests/unistr/test-u32-strdup.c                       | 2 +-
 tests/unistr/test-u32-strlen.c                       | 2 +-
 tests/unistr/test-u32-strmblen.c                     | 2 +-
 tests/unistr/test-u32-strmbtouc.c                    | 2 +-
 tests/unistr/test-u32-strncat.c                      | 2 +-
 tests/unistr/test-u32-strncmp.c                      | 2 +-
 tests/unistr/test-u32-strncpy.c                      | 2 +-
 tests/unistr/test-u32-strnlen.c                      | 2 +-
 tests/unistr/test-u32-strstr.c                       | 2 +-
 tests/unistr/test-u32-strtok.c                       | 2 +-
 tests/unistr/test-u32-to-u16.c                       | 2 +-
 tests/unistr/test-u32-to-u8.c                        | 2 +-
 tests/unistr/test-u32-uctomb.c                       | 2 +-
 tests/unistr/test-u8-check.c                         | 2 +-
 tests/unistr/test-u8-chr.c                           | 2 +-
 tests/unistr/test-u8-cmp.c                           | 2 +-
 tests/unistr/test-u8-cmp2.c                          | 2 +-
 tests/unistr/test-u8-cpy-alloc.c                     | 2 +-
 tests/unistr/test-u8-cpy.c                           | 2 +-
 tests/unistr/test-u8-mblen.c                         | 2 +-
 tests/unistr/test-u8-mbsnlen.c                       | 2 +-
 tests/unistr/test-u8-mbtouc-unsafe.c                 | 2 +-
 tests/unistr/test-u8-mbtouc.c                        | 2 +-
 tests/unistr/test-u8-mbtouc.h                        | 2 +-
 tests/unistr/test-u8-mbtoucr.c                       | 2 +-
 tests/unistr/test-u8-move.c                          | 2 +-
 tests/unistr/test-u8-next.c                          | 2 +-
 tests/unistr/test-u8-prev.c                          | 2 +-
 tests/unistr/test-u8-set.c                           | 2 +-
 tests/unistr/test-u8-stpcpy.c                        | 2 +-
 tests/unistr/test-u8-stpncpy.c                       | 2 +-
 tests/unistr/test-u8-strcat.c                        | 2 +-
 tests/unistr/test-u8-strchr.c                        | 2 +-
 tests/unistr/test-u8-strcmp.c                        | 2 +-
 tests/unistr/test-u8-strcmp.h                        | 2 +-
 tests/unistr/test-u8-strcoll.c                       | 2 +-
 tests/unistr/test-u8-strcpy.c                        | 2 +-
 tests/unistr/test-u8-strdup.c                        | 2 +-
 tests/unistr/test-u8-strlen.c                        | 2 +-
 tests/unistr/test-u8-strmblen.c                      | 2 +-
 tests/unistr/test-u8-strmbtouc.c                     | 2 +-
 tests/unistr/test-u8-strncat.c                       | 2 +-
 tests/unistr/test-u8-strncmp.c                       | 2 +-
 tests/unistr/test-u8-strncpy.c                       | 2 +-
 tests/unistr/test-u8-strnlen.c                       | 2 +-
 tests/unistr/test-u8-strstr.c                        | 2 +-
 tests/unistr/test-u8-strtok.c                        | 2 +-
 tests/unistr/test-u8-to-u16.c                        | 2 +-
 tests/unistr/test-u8-to-u32.c                        | 2 +-
 tests/unistr/test-u8-uctomb.c                        | 2 +-
 tests/uniwbrk/test-u16-wordbreaks.c                  | 2 +-
 tests/uniwbrk/test-u32-wordbreaks.c                  | 2 +-
 tests/uniwbrk/test-u8-wordbreaks.c                   | 2 +-
 tests/uniwbrk/test-uc-wordbreaks.c                   | 2 +-
 tests/uniwbrk/test-ulc-wordbreaks.c                  | 2 +-
 tests/uniwidth/test-u16-strwidth.c                   | 2 +-
 tests/uniwidth/test-u16-width.c                      | 2 +-
 tests/uniwidth/test-u32-strwidth.c                   | 2 +-
 tests/uniwidth/test-u32-width.c                      | 2 +-
 tests/uniwidth/test-u8-strwidth.c                    | 2 +-
 tests/uniwidth/test-u8-width.c                       | 2 +-
 tests/uniwidth/test-uc_width.c                       | 2 +-
 tests/uniwidth/test-uc_width2.c                      | 2 +-
 tests/zerosize-ptr.h                                 | 2 +-
 top/GNUmakefile                                      | 2 +-
 top/autogen.sh                                       | 2 +-
 top/autopull.sh                                      | 2 +-
 top/bootstrap                                        | 2 +-
 top/bootstrap-funclib.sh                             | 2 +-
 top/gitsub.sh                                        | 2 +-
 top/maint.mk                                         | 2 +-
 users.txt                                            | 2 +-
 4428 files changed, 4431 insertions(+), 4431 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 49f88777eb..ef7f457143 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -146750,7 +146750,7 @@
        coding: utf-8
        End:
 
-       Copyright (C) 1997-2022 Free Software Foundation, Inc.
+       Copyright (C) 1997-2023 Free Software Foundation, Inc.
 
        Copying and distribution of this file, with or without
        modification, are permitted provided the copyright notice
diff --git a/MODULES.html.sh b/MODULES.html.sh
index 7222459c69..185e390440 100755
--- a/MODULES.html.sh
+++ b/MODULES.html.sh
@@ -1,6 +1,6 @@
 #!/bin/sh
 #
-# Copyright (C) 2002-2022 Free Software Foundation, Inc.
+# Copyright (C) 2002-2023 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/Makefile b/Makefile
index 2eaa15b6bb..656034d134 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,5 @@
 # GNU Makefile for gnulib central.
-# Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
 #
 # Copying and distribution of this file, with or without modification,
 # in any medium, are permitted without royalty provided the copyright
diff --git a/all-modules b/all-modules
index 5b80499513..9e90b02273 100755
--- a/all-modules
+++ b/all-modules
@@ -1,6 +1,6 @@
 #!/bin/sh
 #
-# Copyright (C) 2022 Free Software Foundation, Inc.
+# Copyright (C) 2022-2023 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/build-aux/announce-gen b/build-aux/announce-gen
index 3847a568d2..6bf48e1b02 100755
--- a/build-aux/announce-gen
+++ b/build-aux/announce-gen
@@ -3,7 +3,7 @@
 
 # Generate a release announcement message.
 
-# Copyright (C) 2002-2022 Free Software Foundation, Inc.
+# Copyright (C) 2002-2023 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/build-aux/bootstrap b/build-aux/bootstrap
index b1a4cc17de..6d1d22c675 100755
--- a/build-aux/bootstrap
+++ b/build-aux/bootstrap
@@ -5,7 +5,7 @@
 
 scriptversion=2022-12-27.07; # UTC
 
-# Copyright (C) 2003-2022 Free Software Foundation, Inc.
+# Copyright (C) 2003-2023 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/build-aux/bootstrap.conf b/build-aux/bootstrap.conf
index 96e75e0ef2..15a3131540 100644
--- a/build-aux/bootstrap.conf
+++ b/build-aux/bootstrap.conf
@@ -1,6 +1,6 @@
 # Bootstrap configuration.                                          -*- sh -*-
 
-# Copyright (C) 2006-2022 Free Software Foundation, Inc.
+# Copyright (C) 2006-2023 Free Software Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/build-aux/config.libpath b/build-aux/config.libpath
index e16ef2e8d6..e026b5444d 100755
--- a/build-aux/config.libpath
+++ b/build-aux/config.libpath
@@ -2,7 +2,7 @@
 # Output a system dependent set of variables, describing how to set the
 # run time search path of shared libraries in an executable at run time.
 #
-#   Copyright 1996-2022 Free Software Foundation, Inc.
+#   Copyright 1996-2023 Free Software Foundation, Inc.
 #   Taken from GNU libtool, 2003
 #   Originally by Gordon Matzigkeit <gord@gnu.ai.mit.edu>, 1996
 #
diff --git a/build-aux/config.rpath b/build-aux/config.rpath
index 1e1ab67906..1e2595ff59 100755
--- a/build-aux/config.rpath
+++ b/build-aux/config.rpath
@@ -2,7 +2,7 @@
 # Output a system dependent set of variables, describing how to set the
 # run time search path of shared libraries in an executable.
 #
-#   Copyright 1996-2022 Free Software Foundation, Inc.
+#   Copyright 1996-2023 Free Software Foundation, Inc.
 #   Taken from GNU libtool, 2001
 #   Originally by Gordon Matzigkeit <gord@gnu.ai.mit.edu>, 1996
 #
diff --git a/build-aux/csharpcomp.sh.in b/build-aux/csharpcomp.sh.in
index 63b5a7013c..65c9ea03db 100644
--- a/build-aux/csharpcomp.sh.in
+++ b/build-aux/csharpcomp.sh.in
@@ -1,7 +1,7 @@
 #!/bin/sh
 # Compile a C# program.
 
-# Copyright (C) 2003-2022 Free Software Foundation, Inc.
+# Copyright (C) 2003-2023 Free Software Foundation, Inc.
 # Written by Bruno Haible <bruno@clisp.org>, 2003.
 #
 # This program is free software: you can redistribute it and/or modify
diff --git a/build-aux/csharpexec.sh.in b/build-aux/csharpexec.sh.in
index 6f7a8891ca..64d6f9ec13 100644
--- a/build-aux/csharpexec.sh.in
+++ b/build-aux/csharpexec.sh.in
@@ -1,7 +1,7 @@
 #!/bin/sh
 # Execute a C# program.
 
-# Copyright (C) 2003-2022 Free Software Foundation, Inc.
+# Copyright (C) 2003-2023 Free Software Foundation, Inc.
 # Written by Bruno Haible <bruno@clisp.org>, 2003.
 #
 # This program is free software: you can redistribute it and/or modify
diff --git a/build-aux/declared.sh b/build-aux/declared.sh
index b721f7e992..4d36590db5 100755
--- a/build-aux/declared.sh
+++ b/build-aux/declared.sh
@@ -1,6 +1,6 @@
 #! /bin/sh
 #
-# Copyright (C) 2006-2022 Free Software Foundation, Inc.
+# Copyright (C) 2006-2023 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/build-aux/do-release-commit-and-tag 
b/build-aux/do-release-commit-and-tag
index c8f7a53e05..3402bae45e 100755
--- a/build-aux/do-release-commit-and-tag
+++ b/build-aux/do-release-commit-and-tag
@@ -7,7 +7,7 @@ VERSION=2018-03-07.03 # UTC
 
 # Note: this is a bash script (could be zsh or dash)
 
-# Copyright (C) 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/build-aux/gendocs.sh b/build-aux/gendocs.sh
index ff00029283..9afe3100e1 100755
--- a/build-aux/gendocs.sh
+++ b/build-aux/gendocs.sh
@@ -2,9 +2,9 @@
 # gendocs.sh -- generate a GNU manual in many formats.  This script is
 #   mentioned in maintain.texi.  See the help message below for usage details.
 
-scriptversion=2022-10-25.23
+scriptversion=2023-01-01.00
 
-# Copyright 2003-2022 Free Software Foundation, Inc.
+# Copyright 2003-2023 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -73,7 +73,7 @@ texarg="-t @finalout"
 
 version="gendocs.sh $scriptversion
 
-Copyright 2022 Free Software Foundation, Inc.
+Copyright 2023 Free Software Foundation, Inc.
 There is NO warranty.  You may redistribute this software
 under the terms of the GNU General Public License.
 For more information about these matters, see the files named COPYING."
diff --git a/build-aux/git-version-gen b/build-aux/git-version-gen
index 72a2cc8e85..a72057bf2c 100755
--- a/build-aux/git-version-gen
+++ b/build-aux/git-version-gen
@@ -2,7 +2,7 @@
 # Print a version string.
 scriptversion=2022-07-09.08; # UTC
 
-# Copyright (C) 2007-2022 Free Software Foundation, Inc.
+# Copyright (C) 2007-2023 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/build-aux/gitlog-to-changelog b/build-aux/gitlog-to-changelog
index 82d9f97336..4678bad105 100755
--- a/build-aux/gitlog-to-changelog
+++ b/build-aux/gitlog-to-changelog
@@ -3,7 +3,7 @@
 
 # Convert git log output to ChangeLog format.
 
-# Copyright (C) 2008-2022 Free Software Foundation, Inc.
+# Copyright (C) 2008-2023 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/build-aux/gnu-web-doc-update b/build-aux/gnu-web-doc-update
index 28a0e97ef4..c968b1dcda 100755
--- a/build-aux/gnu-web-doc-update
+++ b/build-aux/gnu-web-doc-update
@@ -4,7 +4,7 @@
 
 VERSION=2022-01-27.18; # UTC
 
-# Copyright (C) 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/build-aux/gnupload b/build-aux/gnupload
index b97e566f9d..215a938889 100755
--- a/build-aux/gnupload
+++ b/build-aux/gnupload
@@ -3,7 +3,7 @@
 
 scriptversion=2022-01-27.18; # UTC
 
-# Copyright (C) 2004-2022 Free Software Foundation, Inc.
+# Copyright (C) 2004-2023 Free Software Foundation, Inc.
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/build-aux/increment-serial b/build-aux/increment-serial
index 1059b5932e..cff9ac04cd 100755
--- a/build-aux/increment-serial
+++ b/build-aux/increment-serial
@@ -1,7 +1,7 @@
 #!/bin/sh
 # Increment serial number in Autoconf *.m4 files.
 
-# Copyright (C) 2021-2022 Free Software Foundation, Inc.
+# Copyright (C) 2021-2023 Free Software Foundation, Inc.
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/build-aux/install-reloc b/build-aux/install-reloc
index 22739681ae..975b31bcba 100755
--- a/build-aux/install-reloc
+++ b/build-aux/install-reloc
@@ -1,6 +1,6 @@
 #!/bin/sh
 # install-reloc - install a program including a relocating wrapper
-# Copyright (C) 2003-2022 Free Software Foundation, Inc.
+# Copyright (C) 2003-2023 Free Software Foundation, Inc.
 # Written by Bruno Haible <bruno@clisp.org>, 2003.
 #
 # This program is free software: you can redistribute it and/or modify
diff --git a/build-aux/javacomp.sh.in b/build-aux/javacomp.sh.in
index 04b5f13e6d..64d250f371 100644
--- a/build-aux/javacomp.sh.in
+++ b/build-aux/javacomp.sh.in
@@ -1,7 +1,7 @@
 #!/bin/sh
 # Compile a Java program.
 
-# Copyright (C) 2001-2022 Free Software Foundation, Inc.
+# Copyright (C) 2001-2023 Free Software Foundation, Inc.
 # Written by Bruno Haible <haible@clisp.cons.org>, 2001.
 #
 # This program is free software: you can redistribute it and/or modify
diff --git a/build-aux/javaexec.sh.in b/build-aux/javaexec.sh.in
index 31b5c9d28d..2c9f685d11 100644
--- a/build-aux/javaexec.sh.in
+++ b/build-aux/javaexec.sh.in
@@ -1,7 +1,7 @@
 #!/bin/sh
 # Execute a Java program.
 
-# Copyright (C) 2001-2022 Free Software Foundation, Inc.
+# Copyright (C) 2001-2023 Free Software Foundation, Inc.
 # Written by Bruno Haible <haible@clisp.cons.org>, 2001.
 #
 # This program is free software: you can redistribute it and/or modify
diff --git a/build-aux/ldd.sh.in b/build-aux/ldd.sh.in
index f80120d945..2ab11e4a8b 100644
--- a/build-aux/ldd.sh.in
+++ b/build-aux/ldd.sh.in
@@ -1,7 +1,7 @@
 #!/bin/sh
 # Determine the dynamically linked dependencies of a program.
 
-# Copyright (C) 2006-2022 Free Software Foundation, Inc.
+# Copyright (C) 2006-2023 Free Software Foundation, Inc.
 # Written by Bruno Haible <bruno@clisp.org>, 2006.
 #
 # This program is free software: you can redistribute it and/or modify
diff --git a/build-aux/libtool-next-version b/build-aux/libtool-next-version
index 119552c6ac..880d7ca8b6 100755
--- a/build-aux/libtool-next-version
+++ b/build-aux/libtool-next-version
@@ -1,6 +1,6 @@
 #! /bin/sh
 #
-# Copyright (C) 2019-2022 Free Software Foundation, Inc.
+# Copyright (C) 2019-2023 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/build-aux/libtool-reloc b/build-aux/libtool-reloc
index b06e76f3f2..dd76027307 100755
--- a/build-aux/libtool-reloc
+++ b/build-aux/libtool-reloc
@@ -1,6 +1,6 @@
 #!/bin/sh
 # libtool-reloc - libtool wrapper with support for relocatable programs
-# Copyright (C) 2019-2022 Free Software Foundation, Inc.
+# Copyright (C) 2019-2023 Free Software Foundation, Inc.
 # Written by Bruno Haible <bruno@clisp.org>, 2019.
 #
 # This program is free software: you can redistribute it and/or modify
diff --git a/build-aux/mktempd b/build-aux/mktempd
index b747bd7605..e18cf76878 100755
--- a/build-aux/mktempd
+++ b/build-aux/mktempd
@@ -1,7 +1,7 @@
 #!/bin/sh
 # Create a temporary directory, much like mktemp -d does.
 
-# Copyright (C) 2007-2022 Free Software Foundation, Inc.
+# Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/build-aux/move-if-change b/build-aux/move-if-change
index 9f7379a603..93839108fd 100755
--- a/build-aux/move-if-change
+++ b/build-aux/move-if-change
@@ -8,7 +8,7 @@ VERSION='2018-03-07 03:47'; # UTC
 # If you change this file with Emacs, please let the write hook
 # do its job.  Otherwise, update this string manually.
 
-# Copyright (C) 2002-2022 Free Software Foundation, Inc.
+# Copyright (C) 2002-2023 Free Software Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/build-aux/ncftpput-ftp b/build-aux/ncftpput-ftp
index 35229dc076..bbbd5e6926 100755
--- a/build-aux/ncftpput-ftp
+++ b/build-aux/ncftpput-ftp
@@ -1,6 +1,6 @@
 #!/bin/sh
 #
-# Copyright (C) 2008-2022 Free Software Foundation, Inc.
+# Copyright (C) 2008-2023 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/build-aux/pmccabe.css b/build-aux/pmccabe.css
index dcaf964d81..c0c1fc661d 100644
--- a/build-aux/pmccabe.css
+++ b/build-aux/pmccabe.css
@@ -1,6 +1,6 @@
 /* Styling for cyclomatic code complexity charts.
 
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published
diff --git a/build-aux/pmccabe2html b/build-aux/pmccabe2html
index f29eae3f00..f9f106ccf4 100644
--- a/build-aux/pmccabe2html
+++ b/build-aux/pmccabe2html
@@ -1,6 +1,6 @@
 # pmccabe2html - AWK script to convert pmccabe output to html       -*- awk -*-
 
-# Copyright (C) 2007-2022 Free Software Foundation, Inc.
+# Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/build-aux/po/Makefile.in.in b/build-aux/po/Makefile.in.in
index 602d4c67ba..c2cf0491b9 100644
--- a/build-aux/po/Makefile.in.in
+++ b/build-aux/po/Makefile.in.in
@@ -1,6 +1,6 @@
 # Makefile for PO directory in any package using GNU gettext.
 # Copyright (C) 1995-2000 Ulrich Drepper <drepper@gnu.ai.mit.edu>
-# Copyright (C) 2000-2022 Free Software Foundation, Inc.
+# Copyright (C) 2000-2023 Free Software Foundation, Inc.
 #
 # Copying and distribution of this file, with or without modification,
 # are permitted in any medium without royalty provided the copyright
diff --git a/build-aux/po/remove-potcdate.sin b/build-aux/po/remove-potcdate.sin
index 7ba386d0c1..96aae700bd 100644
--- a/build-aux/po/remove-potcdate.sin
+++ b/build-aux/po/remove-potcdate.sin
@@ -1,7 +1,7 @@
 # Sed script that removes the POT-Creation-Date line in the header entry
 # from a POT file.
 #
-# Copyright (C) 2002, 2020-2022 Free Software Foundation, Inc.
+# Copyright (C) 2002, 2020-2023 Free Software Foundation, Inc.
 # Copying and distribution of this file, with or without modification,
 # are permitted in any medium without royalty provided the copyright
 # notice and this notice are preserved.  This file is offered as-is,
diff --git a/build-aux/prefix-gnulib-mk b/build-aux/prefix-gnulib-mk
index 4acf9cca44..640325e6f2 100755
--- a/build-aux/prefix-gnulib-mk
+++ b/build-aux/prefix-gnulib-mk
@@ -3,7 +3,7 @@
 
 # Rewrite a gnulib.mk, adding prefixes to work with automake's subdir-objects.
 
-# Copyright (C) 2012-2022 Free Software Foundation, Inc.
+# Copyright (C) 2012-2023 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
diff --git a/build-aux/reloc-ldflags b/build-aux/reloc-ldflags
index f135c976c9..62f3e8f73d 100755
--- a/build-aux/reloc-ldflags
+++ b/build-aux/reloc-ldflags
@@ -2,7 +2,7 @@
 # Output a system dependent linker command for putting a relocatable library
 # search path into an executable.
 #
-#   Copyright 2003-2022 Free Software Foundation, Inc.
+#   Copyright 2003-2023 Free Software Foundation, Inc.
 #   Written by Bruno Haible <bruno@clisp.org>, 2003.
 #
 #   This program is free software: you can redistribute it and/or modify
diff --git a/build-aux/relocatable.pl.in b/build-aux/relocatable.pl.in
index 5c8a849550..8aa2fa6af7 100644
--- a/build-aux/relocatable.pl.in
+++ b/build-aux/relocatable.pl.in
@@ -9,7 +9,7 @@
 # This code is based on relocatable.sh.in, and design changes (and
 # bugs) should probably be cross-checked with it.
 #
-# Copyright (C) 2013, 2015-2022 Free Software Foundation, Inc.
+# Copyright (C) 2013, 2015-2023 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/build-aux/relocatable.sh.in b/build-aux/relocatable.sh.in
index e085b10005..346b7a8055 100644
--- a/build-aux/relocatable.sh.in
+++ b/build-aux/relocatable.sh.in
@@ -6,7 +6,7 @@
 # package by hand; see doc/relocatable-maint.texi (in Gnulib) for
 # details.
 #
-# Copyright (C) 2003-2022 Free Software Foundation, Inc.
+# Copyright (C) 2003-2023 Free Software Foundation, Inc.
 #
 # This file is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published
diff --git a/build-aux/run-test b/build-aux/run-test
index 58e9cc6d89..ea33d08101 100755
--- a/build-aux/run-test
+++ b/build-aux/run-test
@@ -1,6 +1,6 @@
 #!/bin/sh
 #
-# Copyright (C) 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2009-2023 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/build-aux/snippet/link-warning.h b/build-aux/snippet/link-warning.h
index 69d2176496..dbc5aec1b4 100644
--- a/build-aux/snippet/link-warning.h
+++ b/build-aux/snippet/link-warning.h
@@ -1,5 +1,5 @@
 /* A C macro for emitting link time warnings.
-   Copyright (C) 1995, 1997, 2000, 2002-2003, 2007, 2009-2022 Free Software
+   Copyright (C) 1995, 1997, 2000, 2002-2003, 2007, 2009-2023 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify it
diff --git a/build-aux/update-copyright b/build-aux/update-copyright
index 81b691e857..ce919bac72 100755
--- a/build-aux/update-copyright
+++ b/build-aux/update-copyright
@@ -3,7 +3,7 @@
 
 # Update an FSF copyright year list to include the current year.
 
-# Copyright (C) 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2009-2023 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/build-aux/useless-if-before-free b/build-aux/useless-if-before-free
index 1a027a5d5f..f4908ba0d8 100755
--- a/build-aux/useless-if-before-free
+++ b/build-aux/useless-if-before-free
@@ -4,7 +4,7 @@
 # Detect instances of "if (p) free (p);".
 # Likewise "if (p != 0)", "if (0 != p)", or with NULL; and with braces.
 
-# Copyright (C) 2008-2022 Free Software Foundation, Inc.
+# Copyright (C) 2008-2023 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/build-aux/vc-list-files b/build-aux/vc-list-files
index 77750b9f84..5ed2b14d15 100755
--- a/build-aux/vc-list-files
+++ b/build-aux/vc-list-files
@@ -4,7 +4,7 @@
 # Print a version string.
 scriptversion=2018-03-07.03; # UTC
 
-# Copyright (C) 2006-2022 Free Software Foundation, Inc.
+# Copyright (C) 2006-2023 Free Software Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/build-aux/vcs-to-changelog.py b/build-aux/vcs-to-changelog.py
index 8504493250..f41c4aa2e0 100755
--- a/build-aux/vcs-to-changelog.py
+++ b/build-aux/vcs-to-changelog.py
@@ -1,6 +1,6 @@
 #!/usr/bin/python3
 # Main VCSToChangeLog script.
-# Copyright (C) 2019-2022 Free Software Foundation, Inc.
+# Copyright (C) 2019-2023 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/build-aux/vcstocl/frontend_c.py b/build-aux/vcstocl/frontend_c.py
index 13fcdaca16..bb3fee8b56 100644
--- a/build-aux/vcstocl/frontend_c.py
+++ b/build-aux/vcstocl/frontend_c.py
@@ -1,5 +1,5 @@
 # The C Parser.
-# Copyright (C) 2019-2022 Free Software Foundation, Inc.
+# Copyright (C) 2019-2023 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/build-aux/vcstocl/misc_util.py b/build-aux/vcstocl/misc_util.py
index 3a93d6c293..1b524f54f3 100644
--- a/build-aux/vcstocl/misc_util.py
+++ b/build-aux/vcstocl/misc_util.py
@@ -1,5 +1,5 @@
 # General Utility functions.
-# Copyright (C) 2019-2022 Free Software Foundation, Inc.
+# Copyright (C) 2019-2023 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/build-aux/vcstocl/projectquirks.py 
b/build-aux/vcstocl/projectquirks.py
index 61c63d69b7..c8fac585de 100644
--- a/build-aux/vcstocl/projectquirks.py
+++ b/build-aux/vcstocl/projectquirks.py
@@ -1,5 +1,5 @@
 # Project quirks base class.
-# Copyright (C) 2020-2022 Free Software Foundation, Inc.
+# Copyright (C) 2020-2023 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/build-aux/vcstocl/vcs_git.py b/build-aux/vcstocl/vcs_git.py
index fbd151c74b..ba1788c3e6 100644
--- a/build-aux/vcstocl/vcs_git.py
+++ b/build-aux/vcstocl/vcs_git.py
@@ -1,5 +1,5 @@
 # Git repo support.
-# Copyright (C) 2019-2022 Free Software Foundation, Inc.
+# Copyright (C) 2019-2023 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/build-aux/x-to-1.in b/build-aux/x-to-1.in
index 4a00863bbe..50fb5bb2c7 100644
--- a/build-aux/x-to-1.in
+++ b/build-aux/x-to-1.in
@@ -1,6 +1,6 @@
 #! /bin/sh
 #
-# Copyright (C) 2001-2022 Free Software Foundation, Inc.
+# Copyright (C) 2001-2023 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/check-AC_LIBOBJ b/check-AC_LIBOBJ
index e722fff422..9d4c8f4cbb 100755
--- a/check-AC_LIBOBJ
+++ b/check-AC_LIBOBJ
@@ -1,6 +1,6 @@
 #!/bin/sh
 #
-# Copyright (C) 2020-2022 Free Software Foundation, Inc.
+# Copyright (C) 2020-2023 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/check-copyright b/check-copyright
index 5a38bfd50f..727da142be 100755
--- a/check-copyright
+++ b/check-copyright
@@ -1,6 +1,6 @@
 #!/bin/sh
 #
-# Copyright (C) 2011-2022 Free Software Foundation, Inc.
+# Copyright (C) 2011-2023 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/check-module b/check-module
index 15b993cf39..fad91eb845 100755
--- a/check-module
+++ b/check-module
@@ -1,7 +1,7 @@
 #!/usr/bin/perl -w
 # Check a gnulib module.
 
-# Copyright (C) 2005-2007, 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2005-2007, 2009-2023 Free Software Foundation, Inc.
 
 # This file is free software: you can redistribute it and/or modify it
 # under the terms of the GNU General Public License as published by
diff --git a/config/argz.mk b/config/argz.mk
index 489f964f7f..a977fb66a8 100644
--- a/config/argz.mk
+++ b/config/argz.mk
@@ -11,7 +11,7 @@ argz_files = $(patsubst %, $(glibc_dir)/string/argz-%.c, 
$(argz_names))
 define print-header
   printf '%s\n'                                                                
\
 "/* Functions for dealing with '\0' separated arg vectors."            \
-"   Copyright (C) 1995-1998, 2000-2002, 2006, 2009-2022 Free Software
+"   Copyright (C) 1995-1998, 2000-2002, 2006, 2009-2023 Free Software
 "   Foundation, Inc."\
 "   This file is part of the GNU C Library."                           \
 ""                                                                     \
diff --git a/config/srclist-update b/config/srclist-update
index 05fb0a592b..0021c1b6eb 100755
--- a/config/srclist-update
+++ b/config/srclist-update
@@ -23,7 +23,7 @@
 # This script is used in gnulib and texinfo; the input files are named
 # srclist.txt.
 #
-# Copyright (C) 2002-2003, 2005, 2007-2022 Free Software Foundation, Inc.
+# Copyright (C) 2002-2003, 2005, 2007-2023 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/config/srclistvars.sh b/config/srclistvars.sh
index 28c3d4b474..a85119e42f 100755
--- a/config/srclistvars.sh
+++ b/config/srclistvars.sh
@@ -1,7 +1,7 @@
 # Variables for srclist-update and srclist.txt.
 # Will likely change for each user.
 
-# Copyright 2002-2022 Free Software Foundation, Inc.
+# Copyright 2002-2023 Free Software Foundation, Inc.
 
 # This file is free software: you can redistribute it and/or modify it
 # under the terms of the GNU General Public License as published by
diff --git a/doc/Makefile b/doc/Makefile
index 4129a8c42f..7f0a4047e7 100644
--- a/doc/Makefile
+++ b/doc/Makefile
@@ -1,5 +1,5 @@
 # Makefile for gnulib doc.  -*- coding: utf-8 -*-
-# Copyright (C) 2004, 2006-2022 Free Software Foundation, Inc.
+# Copyright (C) 2004, 2006-2023 Free Software Foundation, Inc.
 #
 # Copying and distribution of this file, with or without modification,
 # are permitted in any medium without royalty provided the copyright
diff --git a/doc/acl-resources.txt b/doc/acl-resources.txt
index aee647e1ca..a46e1a6403 100644
--- a/doc/acl-resources.txt
+++ b/doc/acl-resources.txt
@@ -525,7 +525,7 @@ Utilities:
   cacls
 
 
-Copyright 2008-2022 Free Software Foundation, Inc.
+Copyright 2008-2023 Free Software Foundation, Inc.
 
 Permission is granted to copy, distribute and/or modify this document
 under the terms of the GNU Free Documentation License, Version 1.3
diff --git a/doc/alloca-opt.texi b/doc/alloca-opt.texi
index 5d1903150b..d2183d892f 100644
--- a/doc/alloca-opt.texi
+++ b/doc/alloca-opt.texi
@@ -1,6 +1,6 @@
 @c Documentation of gnulib module 'alloca-opt'.
 
-@c Copyright (C) 2004, 2007, 2009--2022 Free Software Foundation, Inc.
+@c Copyright (C) 2004, 2007, 2009--2023 Free Software Foundation, Inc.
 
 @c Permission is granted to copy, distribute and/or modify this document
 @c under the terms of the GNU Free Documentation License, Version 1.3 or
diff --git a/doc/alloca.texi b/doc/alloca.texi
index 62eef72788..f7e3407f2a 100644
--- a/doc/alloca.texi
+++ b/doc/alloca.texi
@@ -1,6 +1,6 @@
 @c Documentation of gnulib module 'alloca'.
 
-@c Copyright (C) 2004, 2007, 2009--2022 Free Software Foundation, Inc.
+@c Copyright (C) 2004, 2007, 2009--2023 Free Software Foundation, Inc.
 
 @c Permission is granted to copy, distribute and/or modify this document
 @c under the terms of the GNU Free Documentation License, Version 1.3 or
diff --git a/doc/attribute.texi b/doc/attribute.texi
index 67fe1f1b7f..468f074e78 100644
--- a/doc/attribute.texi
+++ b/doc/attribute.texi
@@ -1,6 +1,6 @@
 @c attribute module documentation
 
-@c Copyright 2020--2022 Free Software Foundation, Inc.
+@c Copyright 2020--2023 Free Software Foundation, Inc.
 
 @c Permission is granted to copy, distribute and/or modify this document
 @c under the terms of the GNU Free Documentation License, Version 1.3 or
diff --git a/doc/c-ctype.texi b/doc/c-ctype.texi
index a0a0d7efbf..05704e6468 100644
--- a/doc/c-ctype.texi
+++ b/doc/c-ctype.texi
@@ -1,6 +1,6 @@
 @c Documentation of gnulib module 'c-ctype'.
 
-@c Copyright (C) 2008--2022 Free Software Foundation, Inc.
+@c Copyright (C) 2008--2023 Free Software Foundation, Inc.
 
 @c Permission is granted to copy, distribute and/or modify this document
 @c under the terms of the GNU Free Documentation License, Version 1.3 or
diff --git a/doc/c-strcase.texi b/doc/c-strcase.texi
index aaba656819..7e34c5949e 100644
--- a/doc/c-strcase.texi
+++ b/doc/c-strcase.texi
@@ -1,6 +1,6 @@
 @c Documentation of gnulib module 'c-strcase'.
 
-@c Copyright (C) 2008--2022 Free Software Foundation, Inc.
+@c Copyright (C) 2008--2023 Free Software Foundation, Inc.
 
 @c Permission is granted to copy, distribute and/or modify this document
 @c under the terms of the GNU Free Documentation License, Version 1.3 or
diff --git a/doc/c-strcaseeq.texi b/doc/c-strcaseeq.texi
index f4b5042761..7819fc429a 100644
--- a/doc/c-strcaseeq.texi
+++ b/doc/c-strcaseeq.texi
@@ -1,6 +1,6 @@
 @c Documentation of gnulib module 'c-strcaseeq'.
 
-@c Copyright (C) 2008--2022 Free Software Foundation, Inc.
+@c Copyright (C) 2008--2023 Free Software Foundation, Inc.
 
 @c Permission is granted to copy, distribute and/or modify this document
 @c under the terms of the GNU Free Documentation License, Version 1.3 or
diff --git a/doc/c-strcasestr.texi b/doc/c-strcasestr.texi
index b2dba38968..bb18ed1c37 100644
--- a/doc/c-strcasestr.texi
+++ b/doc/c-strcasestr.texi
@@ -1,6 +1,6 @@
 @c Documentation of gnulib module 'c-strcasestr'.
 
-@c Copyright (C) 2008--2022 Free Software Foundation, Inc.
+@c Copyright (C) 2008--2023 Free Software Foundation, Inc.
 
 @c Permission is granted to copy, distribute and/or modify this document
 @c under the terms of the GNU Free Documentation License, Version 1.3 or
diff --git a/doc/c-strstr.texi b/doc/c-strstr.texi
index b0a105da34..df11a2a148 100644
--- a/doc/c-strstr.texi
+++ b/doc/c-strstr.texi
@@ -1,6 +1,6 @@
 @c Documentation of gnulib module 'c-strstr'.
 
-@c Copyright (C) 2008--2022 Free Software Foundation, Inc.
+@c Copyright (C) 2008--2023 Free Software Foundation, Inc.
 
 @c Permission is granted to copy, distribute and/or modify this document
 @c under the terms of the GNU Free Documentation License, Version 1.3 or
diff --git a/doc/c-strtod.texi b/doc/c-strtod.texi
index e241061303..179c2485d7 100644
--- a/doc/c-strtod.texi
+++ b/doc/c-strtod.texi
@@ -1,6 +1,6 @@
 @c Documentation of gnulib module 'c-strtod'.
 
-@c Copyright (C) 2008--2022 Free Software Foundation, Inc.
+@c Copyright (C) 2008--2023 Free Software Foundation, Inc.
 
 @c Permission is granted to copy, distribute and/or modify this document
 @c under the terms of the GNU Free Documentation License, Version 1.3 or
diff --git a/doc/c-strtold.texi b/doc/c-strtold.texi
index eb61074b14..7c37a265d5 100644
--- a/doc/c-strtold.texi
+++ b/doc/c-strtold.texi
@@ -1,6 +1,6 @@
 @c Documentation of gnulib module 'c-strtold'.
 
-@c Copyright (C) 2008--2022 Free Software Foundation, Inc.
+@c Copyright (C) 2008--2023 Free Software Foundation, Inc.
 
 @c Permission is granted to copy, distribute and/or modify this document
 @c under the terms of the GNU Free Documentation License, Version 1.3 or
diff --git a/doc/containers.texi b/doc/containers.texi
index 07a879cd41..45c25f940a 100644
--- a/doc/containers.texi
+++ b/doc/containers.texi
@@ -1,7 +1,7 @@
 @node Container data types
 @section Container data types
 
-@c Copyright (C) 2019--2022 Free Software Foundation, Inc.
+@c Copyright (C) 2019--2023 Free Software Foundation, Inc.
 
 @c Permission is granted to copy, distribute and/or modify this document
 @c under the terms of the GNU Free Documentation License, Version 1.3 or
diff --git a/doc/extern-inline.texi b/doc/extern-inline.texi
index 8f43f4ddd2..b75d65b149 100644
--- a/doc/extern-inline.texi
+++ b/doc/extern-inline.texi
@@ -1,6 +1,6 @@
 @c GNU extern-inline module documentation
 
-@c Copyright (C) 2013--2022 Free Software Foundation, Inc.
+@c Copyright (C) 2013--2023 Free Software Foundation, Inc.
 
 @c Permission is granted to copy, distribute and/or modify this document
 @c under the terms of the GNU Free Documentation License, Version 1.3 or
diff --git a/doc/gcd.texi b/doc/gcd.texi
index b4cc71d7df..92fa019c11 100644
--- a/doc/gcd.texi
+++ b/doc/gcd.texi
@@ -2,7 +2,7 @@
 @section gcd: greatest common divisor
 @findex gcd
 
-@c Copyright (C) 2006, 2009--2022 Free Software Foundation, Inc.
+@c Copyright (C) 2006, 2009--2023 Free Software Foundation, Inc.
 
 @c Permission is granted to copy, distribute and/or modify this document
 @c under the terms of the GNU Free Documentation License, Version 1.3 or
diff --git a/doc/gendocs_template b/doc/gendocs_template
index 0415d947be..a101977dfc 100644
--- a/doc/gendocs_template
+++ b/doc/gendocs_template
@@ -2,7 +2,7 @@
 <!-- Parent-Version: 1.78 -->
 
 <!--
-Copyright (C) 2006-2022 Free Software Foundation, Inc.
+Copyright (C) 2006-2023 Free Software Foundation, Inc.
 
 Copying and distribution of this file, with or without modification,
 are permitted in any medium without royalty provided the copyright
diff --git a/doc/gendocs_template_min b/doc/gendocs_template_min
index 369f494476..273e741a1d 100644
--- a/doc/gendocs_template_min
+++ b/doc/gendocs_template_min
@@ -4,7 +4,7 @@
 <html xmlns="http://www.w3.org/1999/xhtml"; xml:lang="en">
 
 <!--
-Copyright (C) 2007-2022 Free Software Foundation, Inc.
+Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
 Copying and distribution of this file, with or without modification,
 are permitted in any medium without royalty provided the copyright
diff --git a/doc/gnulib-readme.texi b/doc/gnulib-readme.texi
index 3607b6573c..96ff006bd1 100644
--- a/doc/gnulib-readme.texi
+++ b/doc/gnulib-readme.texi
@@ -1,6 +1,6 @@
 @c Gnulib README
 
-@c Copyright 2001, 2003--2022 Free Software Foundation, Inc.
+@c Copyright 2001, 2003--2023 Free Software Foundation, Inc.
 
 @c Permission is granted to copy, distribute and/or modify this document
 @c under the terms of the GNU Free Documentation License, Version 1.3 or
diff --git a/doc/gnulib-tool.texi b/doc/gnulib-tool.texi
index 808e1e8279..03f7cacbd5 100644
--- a/doc/gnulib-tool.texi
+++ b/doc/gnulib-tool.texi
@@ -1,7 +1,7 @@
 @node Invoking gnulib-tool
 @chapter Invoking gnulib-tool
 
-@c Copyright (C) 2005--2022 Free Software Foundation, Inc.
+@c Copyright (C) 2005--2023 Free Software Foundation, Inc.
 
 @c Permission is granted to copy, distribute and/or modify this document
 @c under the terms of the GNU Free Documentation License, Version 1.3 or
diff --git a/doc/gnulib.texi b/doc/gnulib.texi
index 816bf2a3f2..0f645206bf 100644
--- a/doc/gnulib.texi
+++ b/doc/gnulib.texi
@@ -32,7 +32,7 @@ This manual is for GNU Gnulib (updated @value{UPDATED}),
 which is a library of common routines intended to be shared at the
 source level.
 
-Copyright @copyright{} 2004--2022 Free Software Foundation, Inc.
+Copyright @copyright{} 2004--2023 Free Software Foundation, Inc.
 
 Permission is granted to copy, distribute and/or modify this document
 under the terms of the GNU Free Documentation License, Version 1.3 or
diff --git a/doc/intprops.texi b/doc/intprops.texi
index 1ef63bc7f8..5abe259ecb 100644
--- a/doc/intprops.texi
+++ b/doc/intprops.texi
@@ -1,7 +1,7 @@
 @node Integer Properties
 @section Integer Properties
 
-@c Copyright (C) 2011--2022 Free Software Foundation, Inc.
+@c Copyright (C) 2011--2023 Free Software Foundation, Inc.
 
 @c Permission is granted to copy, distribute and/or modify this document
 @c under the terms of the GNU Free Documentation License, Version 1.3 or
diff --git a/doc/join-gnu.texi b/doc/join-gnu.texi
index deacc451b6..2b75d8f72a 100644
--- a/doc/join-gnu.texi
+++ b/doc/join-gnu.texi
@@ -1,4 +1,4 @@
-@c Copyright (C) 2021--2022 Free Software Foundation, Inc.
+@c Copyright (C) 2021--2023 Free Software Foundation, Inc.
 
 @c Permission is granted to copy, distribute and/or modify this document
 @c under the terms of the GNU Free Documentation License, Version 1.3 or
diff --git a/doc/lib-symbol-visibility.texi b/doc/lib-symbol-visibility.texi
index 85ddd11f40..ec948a37ad 100644
--- a/doc/lib-symbol-visibility.texi
+++ b/doc/lib-symbol-visibility.texi
@@ -3,7 +3,7 @@
 
 @c Documentation of gnulib module 'lib-symbol-visibility'.
 
-@c Copyright (C) 2005--2006, 2009--2022 Free Software Foundation, Inc.
+@c Copyright (C) 2005--2006, 2009--2023 Free Software Foundation, Inc.
 
 @c Permission is granted to copy, distribute and/or modify this document
 @c under the terms of the GNU Free Documentation License, Version 1.3 or
diff --git a/doc/noreturn.texi b/doc/noreturn.texi
index 748d30ab30..b5f5d0e260 100644
--- a/doc/noreturn.texi
+++ b/doc/noreturn.texi
@@ -1,6 +1,6 @@
 @c GNU noreturn, stdnoreturn modules documentation
 
-@c Copyright (C) 2019--2022 Free Software Foundation, Inc.
+@c Copyright (C) 2019--2023 Free Software Foundation, Inc.
 
 @c Permission is granted to copy, distribute and/or modify this document
 @c under the terms of the GNU Free Documentation License, Version 1.3 or
diff --git a/doc/parse-datetime.texi b/doc/parse-datetime.texi
index 0c91013a6c..d54d7660c8 100644
--- a/doc/parse-datetime.texi
+++ b/doc/parse-datetime.texi
@@ -1,6 +1,6 @@
 @c GNU date syntax documentation
 
-@c Copyright (C) 1994--2006, 2009--2022 Free Software Foundation, Inc.
+@c Copyright (C) 1994--2006, 2009--2023 Free Software Foundation, Inc.
 
 @c Permission is granted to copy, distribute and/or modify this document
 @c under the terms of the GNU Free Documentation License, Version 1.3 or
diff --git a/doc/progname.texi b/doc/progname.texi
index 90a91e420e..d6beff2b0e 100644
--- a/doc/progname.texi
+++ b/doc/progname.texi
@@ -1,7 +1,7 @@
 @node progname and getprogname
 @section progname and getprogname
 
-@c Copyright (C) 2007, 2009--2022 Free Software Foundation, Inc.
+@c Copyright (C) 2007, 2009--2023 Free Software Foundation, Inc.
 
 @c Permission is granted to copy, distribute and/or modify this document
 @c under the terms of the GNU Free Documentation License, Version 1.3 or
diff --git a/doc/quote.texi b/doc/quote.texi
index 5c0f4f9caa..d50f0ef436 100644
--- a/doc/quote.texi
+++ b/doc/quote.texi
@@ -1,7 +1,7 @@
 @node Quoting
 @section Quoting
 
-@c Copyright (C) 2005, 2009--2022 Free Software Foundation, Inc.
+@c Copyright (C) 2005, 2009--2023 Free Software Foundation, Inc.
 
 @c Permission is granted to copy, distribute and/or modify this document
 @c under the terms of the GNU Free Documentation License, Version 1.3 or
diff --git a/doc/regexprops-generic.texi b/doc/regexprops-generic.texi
index 24b7c8a469..2caa5db595 100644
--- a/doc/regexprops-generic.texi
+++ b/doc/regexprops-generic.texi
@@ -1,4 +1,4 @@
-@c Copyright (C) 1994, 1996, 1998, 2000--2001, 2003--2007, 2009--2022 Free
+@c Copyright (C) 1994, 1996, 1998, 2000--2001, 2003--2007, 2009--2023 Free
 @c Software Foundation, Inc.
 @c
 @c Permission is granted to copy, distribute and/or modify this document
diff --git a/doc/solaris-versions b/doc/solaris-versions
index f00c0b2546..96dd862f65 100644
--- a/doc/solaris-versions
+++ b/doc/solaris-versions
@@ -53,7 +53,7 @@ practical porting concern for GNU applications.  For the 
current list, see
 
 -----
 
-Copyright (C) 2003, 2005-2006, 2009-2022 Free Software Foundation, Inc.
+Copyright (C) 2003, 2005-2006, 2009-2023 Free Software Foundation, Inc.
 
 Copying and distribution of this file, with or without modification,
 are permitted in any medium without royalty provided the copyright
diff --git a/doc/static-inline.texi b/doc/static-inline.texi
index 8c1cdb5fd5..849c19c723 100644
--- a/doc/static-inline.texi
+++ b/doc/static-inline.texi
@@ -1,6 +1,6 @@
 @c GNU static-inline module documentation
 
-@c Copyright (C) 2019--2022 Free Software Foundation, Inc.
+@c Copyright (C) 2019--2023 Free Software Foundation, Inc.
 
 @c Permission is granted to copy, distribute and/or modify this document
 @c under the terms of the GNU Free Documentation License, Version 1.3 or
diff --git a/doc/vcs-to-changelog.texi b/doc/vcs-to-changelog.texi
index b1c918482e..348ad6069e 100644
--- a/doc/vcs-to-changelog.texi
+++ b/doc/vcs-to-changelog.texi
@@ -1,7 +1,7 @@
 @node VCS To ChangeLog
 @section VCS To ChangeLog
 
-@c Copyright (C) 2020--2022 Free Software Foundation, Inc.
+@c Copyright (C) 2020--2023 Free Software Foundation, Inc.
 
 @c Permission is granted to copy, distribute and/or modify this document
 @c under the terms of the GNU Free Documentation License, Version 1.3 or
diff --git a/doc/verify.texi b/doc/verify.texi
index e4037adda1..0362013562 100644
--- a/doc/verify.texi
+++ b/doc/verify.texi
@@ -1,6 +1,6 @@
 @c GNU verify module documentation
 
-@c Copyright (C) 2006, 2009--2022 Free Software Foundation, Inc.
+@c Copyright (C) 2006, 2009--2023 Free Software Foundation, Inc.
 
 @c Permission is granted to copy, distribute and/or modify this document
 @c under the terms of the GNU Free Documentation License, Version 1.3 or
diff --git a/doc/xstdopen.texi b/doc/xstdopen.texi
index eeaa3f5eb7..841ddbf812 100644
--- a/doc/xstdopen.texi
+++ b/doc/xstdopen.texi
@@ -1,6 +1,6 @@
 @c GNU xstdopen and *-safer modules documentation
 
-@c Copyright (C) 2019--2022 Free Software Foundation, Inc.
+@c Copyright (C) 2019--2023 Free Software Foundation, Inc.
 
 @c Permission is granted to copy, distribute and/or modify this document
 @c under the terms of the GNU Free Documentation License, Version 1.3 or
diff --git a/gnulib-tool b/gnulib-tool
index b0126e711a..5373333f74 100755
--- a/gnulib-tool
+++ b/gnulib-tool
@@ -1,6 +1,6 @@
 #! /bin/sh
 #
-# Copyright (C) 2002-2022 Free Software Foundation, Inc.
+# Copyright (C) 2002-2023 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/gnulib-tool.py b/gnulib-tool.py
index 71ef1c4f2c..488a172d7f 100755
--- a/gnulib-tool.py
+++ b/gnulib-tool.py
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2002-2022 Free Software Foundation, Inc.
+# Copyright (C) 2002-2023 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/lib/_Exit.c b/lib/_Exit.c
index 5c6b384370..e16b6d836a 100644
--- a/lib/_Exit.c
+++ b/lib/_Exit.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2010-2022 Free Software Foundation, Inc.
+/* Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/_Noreturn.h b/lib/_Noreturn.h
index e914627a88..fa15b1b25e 100644
--- a/lib/_Noreturn.h
+++ b/lib/_Noreturn.h
@@ -1,5 +1,5 @@
 /* A C macro for declaring that a function does not return.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify it
    under the terms of the GNU Lesser General Public License as published
diff --git a/lib/accept.c b/lib/accept.c
index 5c4d1f352f..2641cedb6f 100644
--- a/lib/accept.c
+++ b/lib/accept.c
@@ -1,6 +1,6 @@
 /* accept.c --- wrappers for Windows accept function
 
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/accept4.c b/lib/accept4.c
index 61ab6c77cd..4bd4a48930 100644
--- a/lib/accept4.c
+++ b/lib/accept4.c
@@ -1,5 +1,5 @@
 /* Accept a connection on a socket, with specific opening flags.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/access.c b/lib/access.c
index e39c158ecb..e2c12b1f19 100644
--- a/lib/access.c
+++ b/lib/access.c
@@ -1,5 +1,5 @@
 /* Test the access rights of a file.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/acl-errno-valid.c b/lib/acl-errno-valid.c
index a364e41325..a4fd575e3f 100644
--- a/lib/acl-errno-valid.c
+++ b/lib/acl-errno-valid.c
@@ -1,6 +1,6 @@
 /* Test whether ACLs are well supported on this system.
 
-   Copyright 2013-2022 Free Software Foundation, Inc.
+   Copyright 2013-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/acl-internal.c b/lib/acl-internal.c
index be244c67a2..fbe9b2c9a0 100644
--- a/lib/acl-internal.c
+++ b/lib/acl-internal.c
@@ -1,6 +1,6 @@
 /* Test whether a file has a nontrivial ACL.  -*- coding: utf-8 -*-
 
-   Copyright (C) 2002-2003, 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002-2003, 2005-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/acl-internal.h b/lib/acl-internal.h
index 94553fab25..c97e847cdc 100644
--- a/lib/acl-internal.h
+++ b/lib/acl-internal.h
@@ -1,6 +1,6 @@
 /* Internal implementation of access control lists.  -*- coding: utf-8 -*-
 
-   Copyright (C) 2002-2003, 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002-2003, 2005-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/acl.h b/lib/acl.h
index 0be6ef1cea..58e5797179 100644
--- a/lib/acl.h
+++ b/lib/acl.h
@@ -1,6 +1,6 @@
 /* acl.c - access control lists
 
-   Copyright (C) 2002, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/acl_entries.c b/lib/acl_entries.c
index 677de23e0c..a59ace3f40 100644
--- a/lib/acl_entries.c
+++ b/lib/acl_entries.c
@@ -1,6 +1,6 @@
 /* Return the number of entries in an ACL.
 
-   Copyright (C) 2002-2003, 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002-2003, 2005-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/acosf.c b/lib/acosf.c
index 6d54e071c0..fb6de0f29e 100644
--- a/lib/acosf.c
+++ b/lib/acosf.c
@@ -1,5 +1,5 @@
 /* Inverse cosine function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/acosl.c b/lib/acosl.c
index f92dda7931..26aa151d78 100644
--- a/lib/acosl.c
+++ b/lib/acosl.c
@@ -1,6 +1,6 @@
 /* arccos (inverse cosine) function with 'long double' argument.
 
-   Copyright (C) 2003-2022 Free Software Foundation, Inc.
+   Copyright (C) 2003-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/af_alg.c b/lib/af_alg.c
index 084bff6067..9f022ce521 100644
--- a/lib/af_alg.c
+++ b/lib/af_alg.c
@@ -1,5 +1,5 @@
 /* af_alg.c - Compute message digests from file streams and buffers.
-   Copyright (C) 2018-2022 Free Software Foundation, Inc.
+   Copyright (C) 2018-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/af_alg.h b/lib/af_alg.h
index ddd6568b8e..e8ffb3f7a0 100644
--- a/lib/af_alg.h
+++ b/lib/af_alg.h
@@ -1,5 +1,5 @@
 /* af_alg.h - Compute message digests from file streams and buffers.
-   Copyright (C) 2018-2022 Free Software Foundation, Inc.
+   Copyright (C) 2018-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/alignalloc.c b/lib/alignalloc.c
index d5922e16ac..7d94ce2ca9 100644
--- a/lib/alignalloc.c
+++ b/lib/alignalloc.c
@@ -1,6 +1,6 @@
 /* aligned memory allocation
 
-   Copyright 2022 Free Software Foundation, Inc.
+   Copyright 2022-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/alignalloc.h b/lib/alignalloc.h
index f47aa86dcd..a98b2de739 100644
--- a/lib/alignalloc.h
+++ b/lib/alignalloc.h
@@ -1,6 +1,6 @@
 /* aligned memory allocation
 
-   Copyright 2022 Free Software Foundation, Inc.
+   Copyright 2022-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/aligned-malloc.h b/lib/aligned-malloc.h
index 3ce075fb65..cc938b608d 100644
--- a/lib/aligned-malloc.h
+++ b/lib/aligned-malloc.h
@@ -1,6 +1,6 @@
 /* Allocate memory with indefinite extent and specified alignment.
 
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/aligned_alloc.c b/lib/aligned_alloc.c
index 37e3de5cb8..dd96a4d3c8 100644
--- a/lib/aligned_alloc.c
+++ b/lib/aligned_alloc.c
@@ -1,5 +1,5 @@
 /* An aligned_alloc() function that works around platform bugs.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/alignof.h b/lib/alignof.h
index 41bab60378..505ad97aa4 100644
--- a/lib/alignof.h
+++ b/lib/alignof.h
@@ -1,5 +1,5 @@
 /* Determine alignment of types.
-   Copyright (C) 2003-2004, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2003-2004, 2006, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/alloca.in.h b/lib/alloca.in.h
index e2b146138d..a1bb3d758d 100644
--- a/lib/alloca.in.h
+++ b/lib/alloca.in.h
@@ -1,6 +1,6 @@
 /* Memory allocation on the stack.
 
-   Copyright (C) 1995, 1999, 2001-2004, 2006-2022 Free Software Foundation,
+   Copyright (C) 1995, 1999, 2001-2004, 2006-2023 Free Software Foundation,
    Inc.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/allocator.c b/lib/allocator.c
index 42c891805d..922be1fce8 100644
--- a/lib/allocator.c
+++ b/lib/allocator.c
@@ -1,6 +1,6 @@
 /* Memory allocators such as malloc+free.
 
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/allocator.h b/lib/allocator.h
index 3e698ced83..0c830d01cd 100644
--- a/lib/allocator.h
+++ b/lib/allocator.h
@@ -1,6 +1,6 @@
 /* Memory allocators such as malloc+free.
 
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/alphasort.c b/lib/alphasort.c
index 69743d2b57..7b1ded9c6c 100644
--- a/lib/alphasort.c
+++ b/lib/alphasort.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1992, 1997-1998, 2009-2022 Free Software Foundation, Inc.
+/* Copyright (C) 1992, 1997-1998, 2009-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/amemxfrm.c b/lib/amemxfrm.c
index 760076c4e4..28872bcfe1 100644
--- a/lib/amemxfrm.c
+++ b/lib/amemxfrm.c
@@ -1,5 +1,5 @@
 /* Locale dependent memory area transformation for comparison.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/amemxfrm.h b/lib/amemxfrm.h
index 84316b57c0..bd5879b209 100644
--- a/lib/amemxfrm.h
+++ b/lib/amemxfrm.h
@@ -1,5 +1,5 @@
 /* Locale dependent memory area transformation for comparison.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/anytostr.c b/lib/anytostr.c
index 1382700732..3b74789631 100644
--- a/lib/anytostr.c
+++ b/lib/anytostr.c
@@ -1,6 +1,6 @@
 /* anytostr.c -- convert integers to printable strings
 
-   Copyright (C) 2001, 2006, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001, 2006, 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/arcfour.c b/lib/arcfour.c
index 64f021bb18..72d7a5ffd4 100644
--- a/lib/arcfour.c
+++ b/lib/arcfour.c
@@ -1,5 +1,5 @@
 /* arcfour.c --- The arcfour stream cipher
- * Copyright (C) 2000-2003, 2005-2006, 2009-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2000-2003, 2005-2006, 2009-2023 Free Software Foundation, Inc.
  *
  * This file is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Lesser General Public License as
diff --git a/lib/arcfour.h b/lib/arcfour.h
index d6be173ff4..09070baa6e 100644
--- a/lib/arcfour.h
+++ b/lib/arcfour.h
@@ -1,5 +1,5 @@
 /* arcfour.h --- The arcfour stream cipher
- * Copyright (C) 2000-2005, 2009-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2000-2005, 2009-2023 Free Software Foundation, Inc.
  *
  * This file is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Lesser General Public License as
diff --git a/lib/arctwo.c b/lib/arctwo.c
index c3f2847ad9..7748df592c 100644
--- a/lib/arctwo.c
+++ b/lib/arctwo.c
@@ -1,5 +1,5 @@
 /* arctwo.c --- The RC2 cipher as described in RFC 2268.
- * Copyright (C) 2003-2006, 2008-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2003-2006, 2008-2023 Free Software Foundation, Inc.
  *
  * This file is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Lesser General Public License as
diff --git a/lib/arctwo.h b/lib/arctwo.h
index 74815b9d90..9f83a8878d 100644
--- a/lib/arctwo.h
+++ b/lib/arctwo.h
@@ -1,5 +1,5 @@
 /* arctwo.h --- The arctwo block cipher
- * Copyright (C) 2000-2003, 2005, 2009-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2000-2003, 2005, 2009-2023 Free Software Foundation, Inc.
  *
  * This file is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Lesser General Public License as
diff --git a/lib/areadlink-with-size.c b/lib/areadlink-with-size.c
index 3c50e6c7a6..896e4e1f42 100644
--- a/lib/areadlink-with-size.c
+++ b/lib/areadlink-with-size.c
@@ -1,7 +1,7 @@
 /* readlink wrapper to return the link name in malloc'd storage.
    Unlike xreadlink and xreadlink_with_size, don't ever call exit.
 
-   Copyright (C) 2001, 2003-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001, 2003-2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/areadlink.c b/lib/areadlink.c
index 0bff4a9148..0d6f169f0a 100644
--- a/lib/areadlink.c
+++ b/lib/areadlink.c
@@ -1,7 +1,7 @@
 /* areadlink.c -- readlink wrapper to return the link name in malloc'd storage
    Unlike xreadlink and xreadlink_with_size, don't ever call exit.
 
-   Copyright (C) 2001, 2003-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001, 2003-2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/areadlink.h b/lib/areadlink.h
index 1518d74fb8..cd5738d33b 100644
--- a/lib/areadlink.h
+++ b/lib/areadlink.h
@@ -1,6 +1,6 @@
 /* Read symbolic links without size limitation.
 
-   Copyright (C) 2001, 2003-2004, 2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 2001, 2003-2004, 2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/areadlinkat-with-size.c b/lib/areadlinkat-with-size.c
index 6f015b4994..724cff1714 100644
--- a/lib/areadlinkat-with-size.c
+++ b/lib/areadlinkat-with-size.c
@@ -1,7 +1,7 @@
 /* readlinkat wrapper to return the link name in malloc'd storage.
    Unlike xreadlinkat, only call exit on failure to change directory.
 
-   Copyright (C) 2001, 2003-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001, 2003-2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/areadlinkat.c b/lib/areadlinkat.c
index 3a7fc89637..f78c05e707 100644
--- a/lib/areadlinkat.c
+++ b/lib/areadlinkat.c
@@ -1,7 +1,7 @@
 /* areadlinkat.c -- readlinkat wrapper to return malloc'd link name
    Unlike xreadlinkat, only call exit on failure to change directory.
 
-   Copyright (C) 2001, 2003-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001, 2003-2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/arg-nonnull.h b/lib/arg-nonnull.h
index e4513efe95..9498ae1f7d 100644
--- a/lib/arg-nonnull.h
+++ b/lib/arg-nonnull.h
@@ -1,5 +1,5 @@
 /* A C macro for declaring that specific arguments must not be NULL.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify it
    under the terms of the GNU Lesser General Public License as published
diff --git a/lib/argmatch.c b/lib/argmatch.c
index 16478de124..1e5b77bf32 100644
--- a/lib/argmatch.c
+++ b/lib/argmatch.c
@@ -1,6 +1,6 @@
 /* argmatch.c -- find a match for a string in an array
 
-   Copyright (C) 1990, 1998-1999, 2001-2007, 2009-2022 Free Software
+   Copyright (C) 1990, 1998-1999, 2001-2007, 2009-2023 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/argmatch.h b/lib/argmatch.h
index db98187d7f..f18127fc96 100644
--- a/lib/argmatch.h
+++ b/lib/argmatch.h
@@ -1,6 +1,6 @@
 /* argmatch.h -- definitions and prototypes for argmatch.c
 
-   Copyright (C) 1990, 1998-1999, 2001-2002, 2004-2005, 2009-2022 Free Software
+   Copyright (C) 1990, 1998-1999, 2001-2002, 2004-2005, 2009-2023 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/argp-ba.c b/lib/argp-ba.c
index 5e43c75d32..d0a9e98a1c 100644
--- a/lib/argp-ba.c
+++ b/lib/argp-ba.c
@@ -1,5 +1,5 @@
 /* Default definition for ARGP_PROGRAM_BUG_ADDRESS.
-   Copyright (C) 1996-2022 Free Software Foundation, Inc.
+   Copyright (C) 1996-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Written by Miles Bader <miles@gnu.ai.mit.edu>.
 
diff --git a/lib/argp-eexst.c b/lib/argp-eexst.c
index 2f565d9068..305b1294d9 100644
--- a/lib/argp-eexst.c
+++ b/lib/argp-eexst.c
@@ -1,5 +1,5 @@
 /* Default definition for ARGP_ERR_EXIT_STATUS
-   Copyright (C) 1997, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1997, 2009-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Written by Miles Bader <miles@gnu.ai.mit.edu>.
 
diff --git a/lib/argp-fmtstream.c b/lib/argp-fmtstream.c
index 78c29e38c3..7febb76c50 100644
--- a/lib/argp-fmtstream.c
+++ b/lib/argp-fmtstream.c
@@ -1,5 +1,5 @@
 /* Word-wrapping and line-truncating streams
-   Copyright (C) 1997-2022 Free Software Foundation, Inc.
+   Copyright (C) 1997-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Written by Miles Bader <miles@gnu.ai.mit.edu>.
 
diff --git a/lib/argp-fmtstream.h b/lib/argp-fmtstream.h
index 0540b563e5..3a42e372f3 100644
--- a/lib/argp-fmtstream.h
+++ b/lib/argp-fmtstream.h
@@ -1,5 +1,5 @@
 /* Word-wrapping and line-truncating streams.
-   Copyright (C) 1997-2022 Free Software Foundation, Inc.
+   Copyright (C) 1997-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Written by Miles Bader <miles@gnu.ai.mit.edu>.
 
diff --git a/lib/argp-fs-xinl.c b/lib/argp-fs-xinl.c
index ea037f6d62..afa331fc10 100644
--- a/lib/argp-fs-xinl.c
+++ b/lib/argp-fs-xinl.c
@@ -1,5 +1,5 @@
 /* Real definitions for extern inline functions in argp-fmtstream.h
-   Copyright (C) 1997-2022 Free Software Foundation, Inc.
+   Copyright (C) 1997-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Written by Miles Bader <miles@gnu.ai.mit.edu>.
 
diff --git a/lib/argp-help.c b/lib/argp-help.c
index 9166cc1c93..e5baee2ca8 100644
--- a/lib/argp-help.c
+++ b/lib/argp-help.c
@@ -1,5 +1,5 @@
 /* Hierarchical argument parsing help output
-   Copyright (C) 1995-2022 Free Software Foundation, Inc.
+   Copyright (C) 1995-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Written by Miles Bader <miles@gnu.ai.mit.edu>.
 
diff --git a/lib/argp-namefrob.h b/lib/argp-namefrob.h
index 9c82ac79c2..d6ec29519b 100644
--- a/lib/argp-namefrob.h
+++ b/lib/argp-namefrob.h
@@ -1,5 +1,5 @@
 /* Name frobnication for compiling argp outside of glibc
-   Copyright (C) 1997-2022 Free Software Foundation, Inc.
+   Copyright (C) 1997-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Written by Miles Bader <miles@gnu.ai.mit.edu>.
 
diff --git a/lib/argp-parse.c b/lib/argp-parse.c
index 9bd422ca7b..a147a1e71b 100644
--- a/lib/argp-parse.c
+++ b/lib/argp-parse.c
@@ -1,5 +1,5 @@
 /* Hierarchical argument parsing, layered over getopt
-   Copyright (C) 1995-2022 Free Software Foundation, Inc.
+   Copyright (C) 1995-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Written by Miles Bader <miles@gnu.ai.mit.edu>.
 
diff --git a/lib/argp-pin.c b/lib/argp-pin.c
index f9cb45a9e9..76006cb7a1 100644
--- a/lib/argp-pin.c
+++ b/lib/argp-pin.c
@@ -1,5 +1,5 @@
 /* Full and short program names for argp module
-   Copyright (C) 2005, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/argp-pv.c b/lib/argp-pv.c
index 8363032be0..1ed7f11601 100644
--- a/lib/argp-pv.c
+++ b/lib/argp-pv.c
@@ -1,5 +1,5 @@
 /* Default definition for ARGP_PROGRAM_VERSION.
-   Copyright (C) 1996-2022 Free Software Foundation, Inc.
+   Copyright (C) 1996-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Written by Miles Bader <miles@gnu.ai.mit.edu>.
 
diff --git a/lib/argp-pvh.c b/lib/argp-pvh.c
index 7001712390..8833d63557 100644
--- a/lib/argp-pvh.c
+++ b/lib/argp-pvh.c
@@ -1,5 +1,5 @@
 /* Default definition for ARGP_PROGRAM_VERSION_HOOK.
-   Copyright (C) 1996-2022 Free Software Foundation, Inc.
+   Copyright (C) 1996-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Written by Miles Bader <miles@gnu.ai.mit.edu>.
 
diff --git a/lib/argp-version-etc.c b/lib/argp-version-etc.c
index d164b7a6bb..cf6d7253f0 100644
--- a/lib/argp-version-etc.c
+++ b/lib/argp-version-etc.c
@@ -1,5 +1,5 @@
 /* Version hook for Argp.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/argp-version-etc.h b/lib/argp-version-etc.h
index cfb7976f61..3c420c68ad 100644
--- a/lib/argp-version-etc.h
+++ b/lib/argp-version-etc.h
@@ -1,5 +1,5 @@
 /* Version hook for Argp.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/argp-xinl.c b/lib/argp-xinl.c
index 90b7d17e1c..377f263607 100644
--- a/lib/argp-xinl.c
+++ b/lib/argp-xinl.c
@@ -1,5 +1,5 @@
 /* Real definitions for extern inline functions in argp.h
-   Copyright (C) 1997-2022 Free Software Foundation, Inc.
+   Copyright (C) 1997-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Written by Miles Bader <miles@gnu.ai.mit.edu>.
 
diff --git a/lib/argp.h b/lib/argp.h
index 8a28488dfe..ae0edd390e 100644
--- a/lib/argp.h
+++ b/lib/argp.h
@@ -1,5 +1,5 @@
 /* Hierarchical argument parsing, layered over getopt.
-   Copyright (C) 1995-2022 Free Software Foundation, Inc.
+   Copyright (C) 1995-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Written by Miles Bader <miles@gnu.ai.mit.edu>.
 
diff --git a/lib/argv-iter.c b/lib/argv-iter.c
index fc259a4dfa..dc63d734ab 100644
--- a/lib/argv-iter.c
+++ b/lib/argv-iter.c
@@ -1,5 +1,5 @@
 /* Iterate over arguments from argv or --files0-from=FILE
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/argv-iter.h b/lib/argv-iter.h
index 68665be20e..d420ded808 100644
--- a/lib/argv-iter.h
+++ b/lib/argv-iter.h
@@ -1,5 +1,5 @@
 /* Iterate over arguments from argv or --files0-from=FILE
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/argz.c b/lib/argz.c
index 3b3d19a442..c2b6307276 100644
--- a/lib/argz.c
+++ b/lib/argz.c
@@ -1,5 +1,5 @@
 /* Functions for dealing with '\0' separated arg vectors.
-   Copyright (C) 1995-1998, 2000-2002, 2006, 2008-2022 Free Software
+   Copyright (C) 1995-1998, 2000-2002, 2006, 2008-2023 Free Software
    Foundation, Inc.
    This file is part of the GNU C Library.
 
diff --git a/lib/argz.in.h b/lib/argz.in.h
index 7cb2d1bb7a..3ba80a69ec 100644
--- a/lib/argz.in.h
+++ b/lib/argz.in.h
@@ -1,5 +1,5 @@
 /* Routines for dealing with '\0' separated arg vectors.
-   Copyright (C) 1995-2000, 2004, 2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1995-2000, 2004, 2007, 2009-2023 Free Software Foundation,
    Inc.
    This file is part of the GNU C Library.
 
diff --git a/lib/arpa_inet.in.h b/lib/arpa_inet.in.h
index f5d7db2df7..80e6713fdd 100644
--- a/lib/arpa_inet.in.h
+++ b/lib/arpa_inet.in.h
@@ -1,6 +1,6 @@
 /* A GNU-like <arpa/inet.h>.
 
-   Copyright (C) 2005-2006, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2006, 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/array-mergesort.h b/lib/array-mergesort.h
index c70dc7302e..1ef6ef649c 100644
--- a/lib/array-mergesort.h
+++ b/lib/array-mergesort.h
@@ -1,5 +1,5 @@
 /* Stable-sorting of an array using mergesort.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/asinf.c b/lib/asinf.c
index 411185837f..e77681f1bf 100644
--- a/lib/asinf.c
+++ b/lib/asinf.c
@@ -1,5 +1,5 @@
 /* Inverse sine function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/asinl.c b/lib/asinl.c
index 04ecfeecfd..bb0c5bd33b 100644
--- a/lib/asinl.c
+++ b/lib/asinl.c
@@ -1,6 +1,6 @@
 /* arcsin (inverse sine) function with 'long double' argument.
 
-   Copyright (C) 2003-2022 Free Software Foundation, Inc.
+   Copyright (C) 2003-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/asnprintf.c b/lib/asnprintf.c
index 0c5c76ea53..f4861bf845 100644
--- a/lib/asnprintf.c
+++ b/lib/asnprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/asprintf.c b/lib/asprintf.c
index 9c163f38d9..ba58e06481 100644
--- a/lib/asprintf.c
+++ b/lib/asprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2006-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2006-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/assert.in.h b/lib/assert.in.h
index 2c358ba62e..b0ab99c776 100644
--- a/lib/assert.in.h
+++ b/lib/assert.in.h
@@ -1,5 +1,5 @@
 /* Substitute for and wrapper around <assert.h>
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/assure.h b/lib/assure.h
index 20e806aa4c..e31076d96b 100644
--- a/lib/assure.h
+++ b/lib/assure.h
@@ -1,6 +1,6 @@
 /* Run-time assert-like macros.
 
-   Copyright (C) 2014-2022 Free Software Foundation, Inc.
+   Copyright (C) 2014-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/astrxfrm.c b/lib/astrxfrm.c
index a9aae31f43..214ebc38b8 100644
--- a/lib/astrxfrm.c
+++ b/lib/astrxfrm.c
@@ -1,5 +1,5 @@
 /* Locale dependent string transformation for comparison.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2010.
 
    This program is free software: you can redistribute it and/or modify it
diff --git a/lib/astrxfrm.h b/lib/astrxfrm.h
index 1cfd92c63a..8e9e0c8695 100644
--- a/lib/astrxfrm.h
+++ b/lib/astrxfrm.h
@@ -1,5 +1,5 @@
 /* Locale dependent string transformation for comparison.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify it
    under the terms of the GNU Lesser General Public License as published
diff --git a/lib/asyncsafe-spin.c b/lib/asyncsafe-spin.c
index 24705fc8df..7a74c32077 100644
--- a/lib/asyncsafe-spin.c
+++ b/lib/asyncsafe-spin.c
@@ -1,5 +1,5 @@
 /* Spin locks for communication between threads and signal handlers.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/asyncsafe-spin.h b/lib/asyncsafe-spin.h
index 18b8819f8d..7bd5f48df9 100644
--- a/lib/asyncsafe-spin.h
+++ b/lib/asyncsafe-spin.h
@@ -1,5 +1,5 @@
 /* Spin locks for communication between threads and signal handlers.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/at-func.c b/lib/at-func.c
index afcc819beb..13e3fb3205 100644
--- a/lib/at-func.c
+++ b/lib/at-func.c
@@ -1,5 +1,5 @@
 /* Define at-style functions like fstatat, unlinkat, fchownat, etc.
-   Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/at-func2.c b/lib/at-func2.c
index 8a0882e216..bea7ea6ce6 100644
--- a/lib/at-func2.c
+++ b/lib/at-func2.c
@@ -1,5 +1,5 @@
 /* Define 2-FD at-style functions like linkat or renameat.
-   Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/atan2f.c b/lib/atan2f.c
index 41ac4a2090..5d308432b9 100644
--- a/lib/atan2f.c
+++ b/lib/atan2f.c
@@ -1,5 +1,5 @@
 /* Angle of a point in the plane.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/atanf.c b/lib/atanf.c
index 1881a9dfcd..1c1f3021c0 100644
--- a/lib/atanf.c
+++ b/lib/atanf.c
@@ -1,5 +1,5 @@
 /* Inverse tangent function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/atoll.c b/lib/atoll.c
index 12f3cc5eaa..03a110f9f2 100644
--- a/lib/atoll.c
+++ b/lib/atoll.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991, 1997-1998, 2008-2022 Free Software Foundation, Inc.
+/* Copyright (C) 1991, 1997-1998, 2008-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/attribute.h b/lib/attribute.h
index 2dd14f40ef..130644d879 100644
--- a/lib/attribute.h
+++ b/lib/attribute.h
@@ -1,6 +1,6 @@
 /* ATTRIBUTE_* macros for using attributes in GCC and similar compilers
 
-   Copyright 2020-2022 Free Software Foundation, Inc.
+   Copyright 2020-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/backup-find.c b/lib/backup-find.c
index e5af21f35e..d09908b1ba 100644
--- a/lib/backup-find.c
+++ b/lib/backup-find.c
@@ -1,6 +1,6 @@
 /* backupfile.c -- make Emacs style backup file names
 
-   Copyright 2017-2022 Free Software Foundation, Inc.
+   Copyright 2017-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/backup-internal.h b/lib/backup-internal.h
index ca8d0f2a76..4ab01db58a 100644
--- a/lib/backup-internal.h
+++ b/lib/backup-internal.h
@@ -1,6 +1,6 @@
 /* Backup files.
 
-   Copyright (C) 2017-2022 Free Software Foundation, Inc.
+   Copyright (C) 2017-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published
diff --git a/lib/backup-rename.c b/lib/backup-rename.c
index e90579e7bd..6589bffcb5 100644
--- a/lib/backup-rename.c
+++ b/lib/backup-rename.c
@@ -1,6 +1,6 @@
 /* Rename a file to a backup name, Emacs style.
 
-   Copyright 2017-2022 Free Software Foundation, Inc.
+   Copyright 2017-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/backupfile.c b/lib/backupfile.c
index f2ad0eb404..9cca271343 100644
--- a/lib/backupfile.c
+++ b/lib/backupfile.c
@@ -1,6 +1,6 @@
 /* backupfile.c -- make Emacs style backup file names
 
-   Copyright (C) 1990-2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1990-2006, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/backupfile.h b/lib/backupfile.h
index b496eb9783..81fc35cf00 100644
--- a/lib/backupfile.h
+++ b/lib/backupfile.h
@@ -1,6 +1,6 @@
 /* backupfile.h -- declarations for making Emacs style backup file names
 
-   Copyright (C) 1990-1992, 1997-1999, 2003-2004, 2009-2022 Free Software
+   Copyright (C) 1990-1992, 1997-1999, 2003-2004, 2009-2023 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/base32.c b/lib/base32.c
index ea873386f0..50f9d4201a 100644
--- a/lib/base32.c
+++ b/lib/base32.c
@@ -1,5 +1,5 @@
 /* base32.c -- Encode binary data using printable characters.
-   Copyright (C) 1999-2001, 2004-2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999-2001, 2004-2006, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/base32.h b/lib/base32.h
index a2abea6825..8f8d862ab1 100644
--- a/lib/base32.h
+++ b/lib/base32.h
@@ -1,5 +1,5 @@
 /* base32.h -- Encode binary data using printable characters.
-   Copyright (C) 2004-2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2004-2006, 2009-2023 Free Software Foundation, Inc.
    Adapted from Simon Josefsson's base64 code by Gijs van Tulder.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/base64.c b/lib/base64.c
index 6b6e5b09b1..95b669aac7 100644
--- a/lib/base64.c
+++ b/lib/base64.c
@@ -1,5 +1,5 @@
 /* base64.c -- Encode binary data using printable characters.
-   Copyright (C) 1999-2001, 2004-2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999-2001, 2004-2006, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/base64.h b/lib/base64.h
index c4b2ac07b9..9913765200 100644
--- a/lib/base64.h
+++ b/lib/base64.h
@@ -1,5 +1,5 @@
 /* base64.h -- Encode binary data using printable characters.
-   Copyright (C) 2004-2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2004-2006, 2009-2023 Free Software Foundation, Inc.
    Written by Simon Josefsson.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/basename-lgpl.c b/lib/basename-lgpl.c
index f8da1484da..6de60aa678 100644
--- a/lib/basename-lgpl.c
+++ b/lib/basename-lgpl.c
@@ -1,6 +1,6 @@
 /* basename.c -- return the last element in a file name
 
-   Copyright (C) 1990, 1998-2001, 2003-2006, 2009-2022 Free Software
+   Copyright (C) 1990, 1998-2001, 2003-2006, 2009-2023 Free Software
    Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/basename-lgpl.h b/lib/basename-lgpl.h
index 5569f21933..5d996c1da5 100644
--- a/lib/basename-lgpl.h
+++ b/lib/basename-lgpl.h
@@ -1,6 +1,6 @@
 /* Extract the last component (base name) of a file name.
 
-   Copyright (C) 1998, 2001, 2003-2006, 2009-2022 Free Software Foundation,
+   Copyright (C) 1998, 2001, 2003-2006, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/basename.c b/lib/basename.c
index 0e372ca5da..21fab1efad 100644
--- a/lib/basename.c
+++ b/lib/basename.c
@@ -1,6 +1,6 @@
 /* basename.c -- return the last element in a file name
 
-   Copyright (C) 1990, 1998-2001, 2003-2006, 2009-2022 Free Software
+   Copyright (C) 1990, 1998-2001, 2003-2006, 2009-2023 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/bcopy.c b/lib/bcopy.c
index 11321cc4a2..5a3090e1a3 100644
--- a/lib/bcopy.c
+++ b/lib/bcopy.c
@@ -1,6 +1,6 @@
 /* bcopy.c -- copy memory.
 
-   Copyright (C) 1992-2022 Free Software Foundation, Inc.
+   Copyright (C) 1992-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published
diff --git a/lib/binary-io.c b/lib/binary-io.c
index ea407fd74f..28a9e6ed69 100644
--- a/lib/binary-io.c
+++ b/lib/binary-io.c
@@ -1,5 +1,5 @@
 /* Binary mode I/O.
-   Copyright 2017-2022 Free Software Foundation, Inc.
+   Copyright 2017-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/binary-io.h b/lib/binary-io.h
index 5b7661e233..6f4db25335 100644
--- a/lib/binary-io.h
+++ b/lib/binary-io.h
@@ -1,5 +1,5 @@
 /* Binary mode I/O.
-   Copyright (C) 2001, 2003, 2005, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001, 2003, 2005, 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/bind.c b/lib/bind.c
index 199e0ba99c..c67badecdb 100644
--- a/lib/bind.c
+++ b/lib/bind.c
@@ -1,6 +1,6 @@
 /* bind.c --- wrappers for Windows bind function
 
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/bitrotate.c b/lib/bitrotate.c
index 101be6df8e..180ab15d7f 100644
--- a/lib/bitrotate.c
+++ b/lib/bitrotate.c
@@ -1,6 +1,6 @@
 /* Rotate bits in integers.
 
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/bitrotate.h b/lib/bitrotate.h
index ee6e61ede4..de1ee8257c 100644
--- a/lib/bitrotate.h
+++ b/lib/bitrotate.h
@@ -1,5 +1,5 @@
 /* bitrotate.h - Rotate bits in integers
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/bitset.c b/lib/bitset.c
index 9baa8a343d..18153b5160 100644
--- a/lib/bitset.c
+++ b/lib/bitset.c
@@ -1,6 +1,6 @@
 /* General bitsets.
 
-   Copyright (C) 2002-2006, 2009-2015, 2018-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002-2006, 2009-2015, 2018-2023 Free Software Foundation, Inc.
 
    Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).
 
diff --git a/lib/bitset.h b/lib/bitset.h
index d6d054c1bf..fe5da8fd6a 100644
--- a/lib/bitset.h
+++ b/lib/bitset.h
@@ -1,6 +1,6 @@
 /* Generic bitsets.
 
-   Copyright (C) 2002-2004, 2009-2015, 2018-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002-2004, 2009-2015, 2018-2023 Free Software Foundation, Inc.
 
    Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).
 
diff --git a/lib/bitset/array.c b/lib/bitset/array.c
index aa4ae541d1..76e2664e6b 100644
--- a/lib/bitset/array.c
+++ b/lib/bitset/array.c
@@ -1,6 +1,6 @@
 /* Array bitsets.
 
-   Copyright (C) 2002-2003, 2006, 2009-2015, 2018-2022 Free Software
+   Copyright (C) 2002-2003, 2006, 2009-2015, 2018-2023 Free Software
    Foundation, Inc.
 
    Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).
diff --git a/lib/bitset/array.h b/lib/bitset/array.h
index d64880bbec..3800ebadf8 100644
--- a/lib/bitset/array.h
+++ b/lib/bitset/array.h
@@ -1,6 +1,6 @@
 /* Functions to support abitsets.
 
-   Copyright (C) 2002, 2004, 2009-2015, 2018-2022 Free Software Foundation,
+   Copyright (C) 2002, 2004, 2009-2015, 2018-2023 Free Software Foundation,
    Inc.
 
    Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).
diff --git a/lib/bitset/base.h b/lib/bitset/base.h
index 7d87362cf2..57a9658fc7 100644
--- a/lib/bitset/base.h
+++ b/lib/bitset/base.h
@@ -1,6 +1,6 @@
 /* Base bitset stuff.
 
-   Copyright (C) 2002-2004, 2006, 2009-2015, 2018-2022 Free Software
+   Copyright (C) 2002-2004, 2006, 2009-2015, 2018-2023 Free Software
    Foundation, Inc.
 
    Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).
diff --git a/lib/bitset/list.c b/lib/bitset/list.c
index cc423953a2..f73ea70fee 100644
--- a/lib/bitset/list.c
+++ b/lib/bitset/list.c
@@ -1,6 +1,6 @@
 /* Functions to support link list bitsets.
 
-   Copyright (C) 2002-2004, 2006, 2009-2015, 2018-2022 Free Software
+   Copyright (C) 2002-2004, 2006, 2009-2015, 2018-2023 Free Software
    Foundation, Inc.
 
    Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).
diff --git a/lib/bitset/list.h b/lib/bitset/list.h
index 6fb36eab0a..fc6ed48151 100644
--- a/lib/bitset/list.h
+++ b/lib/bitset/list.h
@@ -1,6 +1,6 @@
 /* Functions to support lbitsets.
 
-   Copyright (C) 2002, 2004, 2009-2015, 2018-2022 Free Software Foundation,
+   Copyright (C) 2002, 2004, 2009-2015, 2018-2023 Free Software Foundation,
    Inc.
 
    Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).
diff --git a/lib/bitset/stats.c b/lib/bitset/stats.c
index 7f10953cc8..e8865bf2a4 100644
--- a/lib/bitset/stats.c
+++ b/lib/bitset/stats.c
@@ -1,6 +1,6 @@
 /* Bitset statistics.
 
-   Copyright (C) 2002-2006, 2009-2015, 2018-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002-2006, 2009-2015, 2018-2023 Free Software Foundation, Inc.
 
    Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).
 
diff --git a/lib/bitset/stats.h b/lib/bitset/stats.h
index 11c8e3c6f8..07a228c625 100644
--- a/lib/bitset/stats.h
+++ b/lib/bitset/stats.h
@@ -1,6 +1,6 @@
 /* Functions to support bitset statistics.
 
-   Copyright (C) 2002-2004, 2009-2015, 2018-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002-2004, 2009-2015, 2018-2023 Free Software Foundation, Inc.
 
    Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).
 
diff --git a/lib/bitset/table.c b/lib/bitset/table.c
index bb0aa9a2b0..45d8e98601 100644
--- a/lib/bitset/table.c
+++ b/lib/bitset/table.c
@@ -1,6 +1,6 @@
 /* Functions to support expandable bitsets.
 
-   Copyright (C) 2002-2006, 2009-2015, 2018-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002-2006, 2009-2015, 2018-2023 Free Software Foundation, Inc.
 
    Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).
 
diff --git a/lib/bitset/table.h b/lib/bitset/table.h
index 074837ff35..ebbf0ca563 100644
--- a/lib/bitset/table.h
+++ b/lib/bitset/table.h
@@ -1,6 +1,6 @@
 /* Functions to support tbitsets.
 
-   Copyright (C) 2002, 2004, 2009-2015, 2018-2022 Free Software Foundation,
+   Copyright (C) 2002, 2004, 2009-2015, 2018-2023 Free Software Foundation,
    Inc.
 
    Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).
diff --git a/lib/bitset/vector.c b/lib/bitset/vector.c
index 89f3d6c906..798cb6f944 100644
--- a/lib/bitset/vector.c
+++ b/lib/bitset/vector.c
@@ -1,6 +1,6 @@
 /* Variable array bitsets.
 
-   Copyright (C) 2002-2006, 2009-2015, 2018-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002-2006, 2009-2015, 2018-2023 Free Software Foundation, Inc.
 
    Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).
 
diff --git a/lib/bitset/vector.h b/lib/bitset/vector.h
index 40c78ff6d6..08e0c36b7f 100644
--- a/lib/bitset/vector.h
+++ b/lib/bitset/vector.h
@@ -1,6 +1,6 @@
 /* Functions to support vbitsets.
 
-   Copyright (C) 2002, 2004, 2009-2015, 2018-2022 Free Software Foundation,
+   Copyright (C) 2002, 2004, 2009-2015, 2018-2023 Free Software Foundation,
    Inc.
 
    Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).
diff --git a/lib/bitsetv.c b/lib/bitsetv.c
index 657fd305b2..636517ddbe 100644
--- a/lib/bitsetv.c
+++ b/lib/bitsetv.c
@@ -1,6 +1,6 @@
 /* Bitset vectors.
 
-   Copyright (C) 2001-2002, 2004-2006, 2009-2015, 2018-2022 Free Software
+   Copyright (C) 2001-2002, 2004-2006, 2009-2015, 2018-2023 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/bitsetv.h b/lib/bitsetv.h
index 0df0b7b652..72f7e0bd05 100644
--- a/lib/bitsetv.h
+++ b/lib/bitsetv.h
@@ -1,6 +1,6 @@
 /* Bitset vectors.
 
-   Copyright (C) 2002, 2004, 2009-2015, 2018-2022 Free Software Foundation,
+   Copyright (C) 2002, 2004, 2009-2015, 2018-2023 Free Software Foundation,
    Inc.
 
    Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).
diff --git a/lib/btoc32.c b/lib/btoc32.c
index 90ce5f0691..45313819b9 100644
--- a/lib/btoc32.c
+++ b/lib/btoc32.c
@@ -1,5 +1,5 @@
 /* Convert unibyte character to 32-bit wide character.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/btowc.c b/lib/btowc.c
index 4af58bb02d..caadbd7608 100644
--- a/lib/btowc.c
+++ b/lib/btowc.c
@@ -1,5 +1,5 @@
 /* Convert unibyte character to wide character.
-   Copyright (C) 2008, 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008, 2010-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2008.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/byteswap.in.h b/lib/byteswap.in.h
index f4746d3995..e61be27e91 100644
--- a/lib/byteswap.in.h
+++ b/lib/byteswap.in.h
@@ -1,5 +1,5 @@
 /* byteswap.h - Byte swapping
-   Copyright (C) 2005, 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005, 2007, 2009-2023 Free Software Foundation, Inc.
    Written by Oskar Liljeblad <oskar@osk.mine.nu>, 2005.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/c++defs.h b/lib/c++defs.h
index ad181558fb..8ad46951ad 100644
--- a/lib/c++defs.h
+++ b/lib/c++defs.h
@@ -1,5 +1,5 @@
 /* C++ compatible function declaration macros.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify it
    under the terms of the GNU Lesser General Public License as published
diff --git a/lib/c-asprintf.c b/lib/c-asprintf.c
index a0829d8e98..004dc3ceb2 100644
--- a/lib/c-asprintf.c
+++ b/lib/c-asprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings in C locale.
-   Copyright (C) 1999, 2002, 2006-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2006-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/c-ctype.c b/lib/c-ctype.c
index a247514cd6..a4343f445f 100644
--- a/lib/c-ctype.c
+++ b/lib/c-ctype.c
@@ -1,6 +1,6 @@
 /* Character handling in C locale.
 
-   Copyright (C) 2003-2022 Free Software Foundation, Inc.
+   Copyright (C) 2003-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/c-ctype.h b/lib/c-ctype.h
index 1202ff8a36..35ca83d7d4 100644
--- a/lib/c-ctype.h
+++ b/lib/c-ctype.h
@@ -5,7 +5,7 @@
    <ctype.h> functions' behaviour depends on the current locale set via
    setlocale.
 
-   Copyright (C) 2000-2003, 2006, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2000-2003, 2006, 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/c-dtoastr.c b/lib/c-dtoastr.c
index 6784ef3f05..8cbbebf44f 100644
--- a/lib/c-dtoastr.c
+++ b/lib/c-dtoastr.c
@@ -1,6 +1,6 @@
 /* Convert 'double' to accurate string in C locale.
 
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published
diff --git a/lib/c-ldtoastr.c b/lib/c-ldtoastr.c
index d8feb9850b..0fb5721577 100644
--- a/lib/c-ldtoastr.c
+++ b/lib/c-ldtoastr.c
@@ -1,6 +1,6 @@
 /* Convert 'long double' to accurate string in C locale.
 
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published
diff --git a/lib/c-snprintf.c b/lib/c-snprintf.c
index 7715f6c45b..592e0e3cd4 100644
--- a/lib/c-snprintf.c
+++ b/lib/c-snprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings in C locale.
-   Copyright (C) 2004, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2004, 2006-2023 Free Software Foundation, Inc.
    Written by Simon Josefsson and Paul Eggert.
    Modified for C locale by Ben Pfaff.
 
diff --git a/lib/c-snprintf.h b/lib/c-snprintf.h
index 8ada22fbf3..3515b14f66 100644
--- a/lib/c-snprintf.h
+++ b/lib/c-snprintf.h
@@ -1,5 +1,5 @@
 /* snprintf in C locale.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/c-stack.c b/lib/c-stack.c
index 95de6dc0fc..079d86846d 100644
--- a/lib/c-stack.c
+++ b/lib/c-stack.c
@@ -1,6 +1,6 @@
 /* Stack overflow handling.
 
-   Copyright (C) 2002, 2004, 2006, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2004, 2006, 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/c-stack.h b/lib/c-stack.h
index 431450a05e..d9556a9db2 100644
--- a/lib/c-stack.h
+++ b/lib/c-stack.h
@@ -1,6 +1,6 @@
 /* Stack overflow handling.
 
-   Copyright (C) 2002, 2004, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2004, 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/c-strcase.h b/lib/c-strcase.h
index 3e874b5ea3..9bcca01b27 100644
--- a/lib/c-strcase.h
+++ b/lib/c-strcase.h
@@ -1,5 +1,5 @@
 /* Case-insensitive string comparison functions in C locale.
-   Copyright (C) 1995-1996, 2001, 2003, 2005, 2009-2022 Free Software
+   Copyright (C) 1995-1996, 2001, 2003, 2005, 2009-2023 Free Software
    Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/c-strcasecmp.c b/lib/c-strcasecmp.c
index 87b993cb2f..8a958dc4fd 100644
--- a/lib/c-strcasecmp.c
+++ b/lib/c-strcasecmp.c
@@ -1,5 +1,5 @@
 /* c-strcasecmp.c -- case insensitive string comparator in C locale
-   Copyright (C) 1998-1999, 2005-2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1998-1999, 2005-2006, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/c-strcaseeq.h b/lib/c-strcaseeq.h
index 1c4607cc9f..1d0759a56d 100644
--- a/lib/c-strcaseeq.h
+++ b/lib/c-strcaseeq.h
@@ -1,5 +1,5 @@
 /* Optimized case-insensitive string comparison in C locale.
-   Copyright (C) 2001-2002, 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2002, 2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/c-strcasestr.c b/lib/c-strcasestr.c
index 73bfe541f4..46fd4cdf57 100644
--- a/lib/c-strcasestr.c
+++ b/lib/c-strcasestr.c
@@ -1,5 +1,5 @@
 /* c-strcasestr.c -- case insensitive substring search in C locale
-   Copyright (C) 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2005.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/c-strcasestr.h b/lib/c-strcasestr.h
index 1ef50ab230..f62ab1fc6f 100644
--- a/lib/c-strcasestr.h
+++ b/lib/c-strcasestr.h
@@ -1,5 +1,5 @@
 /* Case-insensitive searching in a string in C locale.
-   Copyright (C) 2005, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/c-strncasecmp.c b/lib/c-strncasecmp.c
index 5a5d30b6e5..4ca8c5f400 100644
--- a/lib/c-strncasecmp.c
+++ b/lib/c-strncasecmp.c
@@ -1,5 +1,5 @@
 /* c-strncasecmp.c -- case insensitive string comparator in C locale
-   Copyright (C) 1998-1999, 2005-2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1998-1999, 2005-2006, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/c-strstr.c b/lib/c-strstr.c
index 0657ae18dc..edea1eeeb7 100644
--- a/lib/c-strstr.c
+++ b/lib/c-strstr.c
@@ -1,5 +1,5 @@
 /* c-strstr.c -- substring search in C locale
-   Copyright (C) 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2005, 2007.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/c-strstr.h b/lib/c-strstr.h
index 8548af0046..d0870cb25f 100644
--- a/lib/c-strstr.h
+++ b/lib/c-strstr.h
@@ -1,5 +1,5 @@
 /* Searching in a string.
-   Copyright (C) 2001-2003, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2003, 2006, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/c-strtod.c b/lib/c-strtod.c
index 80739ee423..a1a08ff023 100644
--- a/lib/c-strtod.c
+++ b/lib/c-strtod.c
@@ -1,6 +1,6 @@
 /* Convert string to double, using the C locale.
 
-   Copyright (C) 2003-2004, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2003-2004, 2006, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/c-strtod.h b/lib/c-strtod.h
index 02c1a34e4c..a267353f0b 100644
--- a/lib/c-strtod.h
+++ b/lib/c-strtod.h
@@ -1,6 +1,6 @@
 /* Convert string to double, using the C locale.  -*- coding: utf-8 -*-
 
-   Copyright (C) 2003-2004, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2003-2004, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/c-strtold.c b/lib/c-strtold.c
index 0d5514a5ed..2f40a0f209 100644
--- a/lib/c-strtold.c
+++ b/lib/c-strtold.c
@@ -1,6 +1,6 @@
 /* Convert string to 'long double' in C locale.
 
-   Copyright (C) 2004-2022 Free Software Foundation, Inc.
+   Copyright (C) 2004-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published
diff --git a/lib/c-vasnprintf.c b/lib/c-vasnprintf.c
index a2625a717c..745e09cc07 100644
--- a/lib/c-vasnprintf.c
+++ b/lib/c-vasnprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings in C locale.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/c-vasnprintf.h b/lib/c-vasnprintf.h
index 02a86f8113..21464ceb1d 100644
--- a/lib/c-vasnprintf.h
+++ b/lib/c-vasnprintf.h
@@ -1,5 +1,5 @@
 /* vsprintf with automatic memory allocation in C locale.
-   Copyright (C) 2002-2004, 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002-2004, 2007-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/c-vasprintf.c b/lib/c-vasprintf.c
index 44e388f5b7..3b50db4e37 100644
--- a/lib/c-vasprintf.c
+++ b/lib/c-vasprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings in C locale.
-   Copyright (C) 1999, 2002, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published
diff --git a/lib/c-vasprintf.h b/lib/c-vasprintf.h
index 4660eec5b0..9c4a042612 100644
--- a/lib/c-vasprintf.h
+++ b/lib/c-vasprintf.h
@@ -1,5 +1,5 @@
 /* vasprintf and asprintf, in C locale.
-   Copyright (C) 2002-2004, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002-2004, 2006-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/c-vsnprintf.c b/lib/c-vsnprintf.c
index fc42806312..ffb975622a 100644
--- a/lib/c-vsnprintf.c
+++ b/lib/c-vsnprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings in C locale.
-   Copyright (C) 2004, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2004, 2006-2023 Free Software Foundation, Inc.
    Written by Simon Josefsson and Yoann Vandoorselaere <yoann@prelude-ids.org>.
    Modified for C locale by Ben Pfaff.
 
diff --git a/lib/c-vsnprintf.h b/lib/c-vsnprintf.h
index 4e3b97c0b8..978f372635 100644
--- a/lib/c-vsnprintf.h
+++ b/lib/c-vsnprintf.h
@@ -1,5 +1,5 @@
 /* vsnprintf in C locale.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/c-xasprintf.c b/lib/c-xasprintf.c
index 63bcdc7fce..181260cb8d 100644
--- a/lib/c-xasprintf.c
+++ b/lib/c-xasprintf.c
@@ -1,5 +1,5 @@
 /* vasprintf and asprintf with out-of-memory checking in C locale.
-   Copyright (C) 1999, 2002-2004, 2006, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002-2004, 2006, 2009-2023 Free Software Foundation,
    Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/c-xvasprintf.c b/lib/c-xvasprintf.c
index 16a8d2c93e..3751331f95 100644
--- a/lib/c-xvasprintf.c
+++ b/lib/c-xvasprintf.c
@@ -1,5 +1,5 @@
 /* vasprintf with out-of-memory checking in C locale.
-   Copyright (C) 1999, 2002-2004, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002-2004, 2006-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/c-xvasprintf.h b/lib/c-xvasprintf.h
index b38e28ed6a..985314b738 100644
--- a/lib/c-xvasprintf.h
+++ b/lib/c-xvasprintf.h
@@ -1,5 +1,5 @@
 /* vasprintf and asprintf, with out-of-memory checking, in C locale.
-   Copyright (C) 2002-2004, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002-2004, 2006-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/c32is-impl.h b/lib/c32is-impl.h
index ed3758c9e0..5917348dc1 100644
--- a/lib/c32is-impl.h
+++ b/lib/c32is-impl.h
@@ -1,5 +1,5 @@
 /* Test whether a 32-bit wide character belongs to a specific character class.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This file is free software.
    It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
diff --git a/lib/c32isalnum.c b/lib/c32isalnum.c
index aac0babb54..6127d99148 100644
--- a/lib/c32isalnum.c
+++ b/lib/c32isalnum.c
@@ -1,5 +1,5 @@
 /* Test 32-bit wide character for being alphanumeric.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This file is free software.
    It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
diff --git a/lib/c32isalpha.c b/lib/c32isalpha.c
index 8596b5aa0e..4041bed605 100644
--- a/lib/c32isalpha.c
+++ b/lib/c32isalpha.c
@@ -1,5 +1,5 @@
 /* Test 32-bit wide character for being alphabetic.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This file is free software.
    It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
diff --git a/lib/c32isblank.c b/lib/c32isblank.c
index e831ab32e8..cae38e29f9 100644
--- a/lib/c32isblank.c
+++ b/lib/c32isblank.c
@@ -1,5 +1,5 @@
 /* Test 32-bit wide character for being blank.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This file is free software.
    It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
diff --git a/lib/c32iscntrl.c b/lib/c32iscntrl.c
index 09289dac1a..48288eb112 100644
--- a/lib/c32iscntrl.c
+++ b/lib/c32iscntrl.c
@@ -1,5 +1,5 @@
 /* Test 32-bit wide character for being a control character.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This file is free software.
    It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
diff --git a/lib/c32isdigit.c b/lib/c32isdigit.c
index ebaa70c87a..8381937334 100644
--- a/lib/c32isdigit.c
+++ b/lib/c32isdigit.c
@@ -1,5 +1,5 @@
 /* Test 32-bit wide character for being a digit.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This file is free software.
    It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
diff --git a/lib/c32isgraph.c b/lib/c32isgraph.c
index a0ede3547c..4c0677105e 100644
--- a/lib/c32isgraph.c
+++ b/lib/c32isgraph.c
@@ -1,5 +1,5 @@
 /* Test 32-bit wide character for being graphic.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This file is free software.
    It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
diff --git a/lib/c32islower.c b/lib/c32islower.c
index 774c838a3b..55b689e818 100644
--- a/lib/c32islower.c
+++ b/lib/c32islower.c
@@ -1,5 +1,5 @@
 /* Test 32-bit wide character for being lowercase.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This file is free software.
    It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
diff --git a/lib/c32isprint.c b/lib/c32isprint.c
index 7840a783b6..fd98088c31 100644
--- a/lib/c32isprint.c
+++ b/lib/c32isprint.c
@@ -1,5 +1,5 @@
 /* Test 32-bit wide character for being printable.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This file is free software.
    It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
diff --git a/lib/c32ispunct.c b/lib/c32ispunct.c
index b94ea7e655..aba446d73e 100644
--- a/lib/c32ispunct.c
+++ b/lib/c32ispunct.c
@@ -1,5 +1,5 @@
 /* Test 32-bit wide character for being a punctuation or symbol character.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This file is free software.
    It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
diff --git a/lib/c32isspace.c b/lib/c32isspace.c
index 047f301e4f..84c4fcfe6a 100644
--- a/lib/c32isspace.c
+++ b/lib/c32isspace.c
@@ -1,5 +1,5 @@
 /* Test 32-bit wide character for being white-space.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This file is free software.
    It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
diff --git a/lib/c32isupper.c b/lib/c32isupper.c
index 97c01dafe4..5dc3a3d3ea 100644
--- a/lib/c32isupper.c
+++ b/lib/c32isupper.c
@@ -1,5 +1,5 @@
 /* Test 32-bit wide character for being uppercase.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This file is free software.
    It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
diff --git a/lib/c32isxdigit.c b/lib/c32isxdigit.c
index cb450e37bf..b78fdc9d04 100644
--- a/lib/c32isxdigit.c
+++ b/lib/c32isxdigit.c
@@ -1,5 +1,5 @@
 /* Test 32-bit wide character for being a hexadecimal digit.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This file is free software.
    It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
diff --git a/lib/c32rtomb.c b/lib/c32rtomb.c
index 196a6e1532..eb312f49f7 100644
--- a/lib/c32rtomb.c
+++ b/lib/c32rtomb.c
@@ -1,5 +1,5 @@
 /* Convert 32-bit wide character to multibyte character.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/c32snrtombs.c b/lib/c32snrtombs.c
index 4b3b40a8f6..7988be4ae4 100644
--- a/lib/c32snrtombs.c
+++ b/lib/c32snrtombs.c
@@ -1,5 +1,5 @@
 /* Convert 32-bit wide string to string.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/c32srtombs-state.c b/lib/c32srtombs-state.c
index 79bd4f89d4..8bd5ea32b5 100644
--- a/lib/c32srtombs-state.c
+++ b/lib/c32srtombs-state.c
@@ -1,5 +1,5 @@
 /* Convert 32-bit wide string to string.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2020.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/c32srtombs.c b/lib/c32srtombs.c
index 6f08deb234..9152e75057 100644
--- a/lib/c32srtombs.c
+++ b/lib/c32srtombs.c
@@ -1,5 +1,5 @@
 /* Convert 32-bit wide string to string.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/c32stombs.c b/lib/c32stombs.c
index 27257d6b51..f469d3bb52 100644
--- a/lib/c32stombs.c
+++ b/lib/c32stombs.c
@@ -1,5 +1,5 @@
 /* Convert 32-bit wide string to string.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2020.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/c32tob.c b/lib/c32tob.c
index 8b6f559d4a..2d7296463d 100644
--- a/lib/c32tob.c
+++ b/lib/c32tob.c
@@ -1,5 +1,5 @@
 /* Convert 32-bit wide character to unibyte character.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/calloc.c b/lib/calloc.c
index 0a934b302c..08843acd28 100644
--- a/lib/calloc.c
+++ b/lib/calloc.c
@@ -1,6 +1,6 @@
 /* calloc() function that is glibc compatible.
    This wrapper function is required at least on Tru64 UNIX 5.1 and mingw.
-   Copyright (C) 2004-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2004-2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/canon-host.c b/lib/canon-host.c
index 3491af39b2..dff0212375 100644
--- a/lib/canon-host.c
+++ b/lib/canon-host.c
@@ -1,6 +1,6 @@
 /* Host name canonicalization
 
-   Copyright (C) 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2023 Free Software Foundation, Inc.
 
    Written by Derek Price <derek@ximbiot.com>.
 
diff --git a/lib/canon-host.h b/lib/canon-host.h
index 0c8e3d7fcd..c1f55c0982 100644
--- a/lib/canon-host.h
+++ b/lib/canon-host.h
@@ -1,6 +1,6 @@
 /* Host name canonicalization
 
-   Copyright (C) 2005, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005, 2009-2023 Free Software Foundation, Inc.
 
    Written by Derek Price <derek@ximbiot.com>
 
diff --git a/lib/canonicalize-lgpl.c b/lib/canonicalize-lgpl.c
index 870a663505..e701297d84 100644
--- a/lib/canonicalize-lgpl.c
+++ b/lib/canonicalize-lgpl.c
@@ -1,5 +1,5 @@
 /* Return the canonical absolute name of a given file.
-   Copyright (C) 1996-2022 Free Software Foundation, Inc.
+   Copyright (C) 1996-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/lib/canonicalize.c b/lib/canonicalize.c
index 3342f70140..010190d275 100644
--- a/lib/canonicalize.c
+++ b/lib/canonicalize.c
@@ -1,5 +1,5 @@
 /* Return the canonical absolute name of a given file.
-   Copyright (C) 1996-2022 Free Software Foundation, Inc.
+   Copyright (C) 1996-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/canonicalize.h b/lib/canonicalize.h
index 817da1fd56..e0cfafd8fa 100644
--- a/lib/canonicalize.h
+++ b/lib/canonicalize.h
@@ -1,5 +1,5 @@
 /* Return the canonical absolute name of a given file.
-   Copyright (C) 1996-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1996-2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/careadlinkat.c b/lib/careadlinkat.c
index 6ddc35f798..359d497396 100644
--- a/lib/careadlinkat.c
+++ b/lib/careadlinkat.c
@@ -1,6 +1,6 @@
 /* Read symbolic links into a buffer without size limitation, relative to fd.
 
-   Copyright (C) 2001, 2003-2004, 2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 2001, 2003-2004, 2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/careadlinkat.h b/lib/careadlinkat.h
index 2b559b2cd4..201d0415ff 100644
--- a/lib/careadlinkat.h
+++ b/lib/careadlinkat.h
@@ -1,6 +1,6 @@
 /* Read symbolic links into a buffer without size limitation, relative to fd.
 
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/cbrt.c b/lib/cbrt.c
index eb3b6d6c2e..9ad940590e 100644
--- a/lib/cbrt.c
+++ b/lib/cbrt.c
@@ -1,5 +1,5 @@
 /* Compute cubic root of double value.
-   Copyright (C) 1997, 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 1997, 2012-2023 Free Software Foundation, Inc.
 
    Contributed by Dirk Alboth <dirka@uni-paderborn.de> and
    Ulrich Drepper <drepper@cygnus.com>, 1997.
diff --git a/lib/cbrtf.c b/lib/cbrtf.c
index ffa93e42fb..20c5e10baf 100644
--- a/lib/cbrtf.c
+++ b/lib/cbrtf.c
@@ -1,5 +1,5 @@
 /* Compute cubic root of float value.
-   Copyright (C) 1997, 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 1997, 2012-2023 Free Software Foundation, Inc.
 
    Contributed by Dirk Alboth <dirka@uni-paderborn.de> and
    Ulrich Drepper <drepper@cygnus.com>, 1997.
diff --git a/lib/cbrtl.c b/lib/cbrtl.c
index 965158200f..8e18490078 100644
--- a/lib/cbrtl.c
+++ b/lib/cbrtl.c
@@ -1,5 +1,5 @@
 /* Compute cubic root of long double value.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
    Cephes Math Library Release 2.2: January, 1991
    Copyright 1984, 1991 by Stephen L. Moshier
    Adapted for glibc October, 2001.
diff --git a/lib/cdefs.h b/lib/cdefs.h
index 7b8ed5b344..09a3d19b23 100644
--- a/lib/cdefs.h
+++ b/lib/cdefs.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1992-2022 Free Software Foundation, Inc.
+/* Copyright (C) 1992-2023 Free Software Foundation, Inc.
    Copyright The GNU Toolchain Authors.
    This file is part of the GNU C Library.
 
diff --git a/lib/ceil.c b/lib/ceil.c
index 4ab192a547..aef0d34c61 100644
--- a/lib/ceil.c
+++ b/lib/ceil.c
@@ -1,5 +1,5 @@
 /* Round towards positive infinity.
-   Copyright (C) 2007, 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2010-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/ceilf.c b/lib/ceilf.c
index fbda602029..638a94ee7e 100644
--- a/lib/ceilf.c
+++ b/lib/ceilf.c
@@ -1,5 +1,5 @@
 /* Round towards positive infinity.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/ceill.c b/lib/ceill.c
index 9eb17d205e..447a283885 100644
--- a/lib/ceill.c
+++ b/lib/ceill.c
@@ -1,5 +1,5 @@
 /* Round towards positive infinity.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/chdir-long.c b/lib/chdir-long.c
index 1c19fa4737..8a25538b3f 100644
--- a/lib/chdir-long.c
+++ b/lib/chdir-long.c
@@ -1,5 +1,5 @@
 /* provide a chdir function that tries not to fail due to ENAMETOOLONG
-   Copyright (C) 2004-2022 Free Software Foundation, Inc.
+   Copyright (C) 2004-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/chdir-long.h b/lib/chdir-long.h
index 84a7298962..6f81fadf00 100644
--- a/lib/chdir-long.h
+++ b/lib/chdir-long.h
@@ -1,5 +1,5 @@
 /* provide a chdir function that tries not to fail due to ENAMETOOLONG
-   Copyright (C) 2004-2005, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2004-2005, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/check-version.c b/lib/check-version.c
index d1b7674d6c..a526ee762c 100644
--- a/lib/check-version.c
+++ b/lib/check-version.c
@@ -1,5 +1,5 @@
 /* check-version.h --- Check version string compatibility.
-   Copyright (C) 1998-2006, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 1998-2006, 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/check-version.h b/lib/check-version.h
index da6b5b0000..738c732d80 100644
--- a/lib/check-version.h
+++ b/lib/check-version.h
@@ -1,5 +1,5 @@
 /* check-version.h --- Check version string compatibility.
-   Copyright (C) 2005, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/chmod.c b/lib/chmod.c
index cb5a4d227d..40088c8a5b 100644
--- a/lib/chmod.c
+++ b/lib/chmod.c
@@ -1,6 +1,6 @@
 /* Implement chmod on platforms where it does not work correctly.
 
-   Copyright 2022 Free Software Foundation, Inc.
+   Copyright 2022-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/chmodat.c b/lib/chmodat.c
index 68fcc13450..dbc3463c40 100644
--- a/lib/chmodat.c
+++ b/lib/chmodat.c
@@ -1,6 +1,6 @@
 /* Change access permissions of a file at a directory.
 
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published
diff --git a/lib/chown.c b/lib/chown.c
index e68acdaf71..d735818afd 100644
--- a/lib/chown.c
+++ b/lib/chown.c
@@ -1,7 +1,7 @@
 /* provide consistent interface to chown for systems that don't interpret
    an ID of -1 as meaning "don't change the corresponding ID".
 
-   Copyright (C) 1997, 2004-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1997, 2004-2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/chownat.c b/lib/chownat.c
index ae3bc514dc..9c01419b7e 100644
--- a/lib/chownat.c
+++ b/lib/chownat.c
@@ -1,6 +1,6 @@
 /* Change owner of a file at a directory.
 
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published
diff --git a/lib/classpath.c b/lib/classpath.c
index ecea35ce16..db937dd66f 100644
--- a/lib/classpath.c
+++ b/lib/classpath.c
@@ -1,5 +1,5 @@
 /* Java CLASSPATH handling.
-   Copyright (C) 2001-2003, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2003, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <haible@clisp.cons.org>, 2001.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/classpath.h b/lib/classpath.h
index 53253f1f83..abcb4cbe40 100644
--- a/lib/classpath.h
+++ b/lib/classpath.h
@@ -1,5 +1,5 @@
 /* Java CLASSPATH handling.
-   Copyright (C) 2003, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2003, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <haible@clisp.cons.org>, 2003.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/clean-temp-private.h b/lib/clean-temp-private.h
index 6f21816b8b..c7af3248a4 100644
--- a/lib/clean-temp-private.h
+++ b/lib/clean-temp-private.h
@@ -1,5 +1,5 @@
 /* Private interface between modules 'clean-temp-simple' and 'clean-temp'.
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/clean-temp-simple.c b/lib/clean-temp-simple.c
index 53127d0bf0..66eeb1ea69 100644
--- a/lib/clean-temp-simple.c
+++ b/lib/clean-temp-simple.c
@@ -1,5 +1,5 @@
 /* Temporary files with automatic cleanup.
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/clean-temp-simple.h b/lib/clean-temp-simple.h
index d55e8d2482..2e0d369491 100644
--- a/lib/clean-temp-simple.h
+++ b/lib/clean-temp-simple.h
@@ -1,5 +1,5 @@
 /* Temporary files with automatic cleanup.
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/clean-temp.c b/lib/clean-temp.c
index d4f0ca3ca5..de16292b36 100644
--- a/lib/clean-temp.c
+++ b/lib/clean-temp.c
@@ -1,5 +1,5 @@
 /* Temporary directories and temporary files with automatic cleanup.
-   Copyright (C) 2001, 2003, 2006-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 2001, 2003, 2006-2007, 2009-2023 Free Software Foundation,
    Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
diff --git a/lib/clean-temp.h b/lib/clean-temp.h
index 451a43d121..1e754561b3 100644
--- a/lib/clean-temp.h
+++ b/lib/clean-temp.h
@@ -1,5 +1,5 @@
 /* Temporary directories and temporary files with automatic cleanup.
-   Copyright (C) 2006, 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/cloexec.c b/lib/cloexec.c
index 812be01a06..e4cecbd2e8 100644
--- a/lib/cloexec.c
+++ b/lib/cloexec.c
@@ -1,6 +1,6 @@
 /* cloexec.c - set or clear the close-on-exec descriptor flag
 
-   Copyright (C) 1991, 2004-2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1991, 2004-2006, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/cloexec.h b/lib/cloexec.h
index 15d2d5efe2..057fd668c9 100644
--- a/lib/cloexec.h
+++ b/lib/cloexec.h
@@ -1,6 +1,6 @@
 /* cloexec.c - set or clear the close-on-exec descriptor flag
 
-   Copyright (C) 2004, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2004, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/close-stream.c b/lib/close-stream.c
index 0fdca79bf8..ab686bac2a 100644
--- a/lib/close-stream.c
+++ b/lib/close-stream.c
@@ -1,6 +1,6 @@
 /* Close a stream, with nicer error checking than fclose's.
 
-   Copyright (C) 1998-2002, 2004, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 1998-2002, 2004, 2006-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/close-stream.h b/lib/close-stream.h
index 2b4c8ed8f5..3b52cc66c3 100644
--- a/lib/close-stream.h
+++ b/lib/close-stream.h
@@ -1,6 +1,6 @@
 /* Close a stream, with nicer error checking than fclose's.
 
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published
diff --git a/lib/close.c b/lib/close.c
index 44990ba71f..3c1b09ea52 100644
--- a/lib/close.c
+++ b/lib/close.c
@@ -1,5 +1,5 @@
 /* close replacement.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/closedir.c b/lib/closedir.c
index a2731220fc..0e004afeca 100644
--- a/lib/closedir.c
+++ b/lib/closedir.c
@@ -1,5 +1,5 @@
 /* Stop reading the entries of a directory.
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/closein.c b/lib/closein.c
index 702faece8b..d26de8d078 100644
--- a/lib/closein.c
+++ b/lib/closein.c
@@ -1,6 +1,6 @@
 /* Close standard input, rewinding seekable stdin if necessary.
 
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/closein.h b/lib/closein.h
index 99d614e605..161952c91d 100644
--- a/lib/closein.h
+++ b/lib/closein.h
@@ -1,6 +1,6 @@
 /* Close standard input, rewinding seekable stdin if necessary.
 
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/closeout.c b/lib/closeout.c
index cfb6efcae5..d9e8211303 100644
--- a/lib/closeout.c
+++ b/lib/closeout.c
@@ -1,6 +1,6 @@
 /* Close standard output and standard error, exiting with a diagnostic on 
error.
 
-   Copyright (C) 1998-2002, 2004, 2006, 2008-2022 Free Software Foundation,
+   Copyright (C) 1998-2002, 2004, 2006, 2008-2023 Free Software Foundation,
    Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/closeout.h b/lib/closeout.h
index 9ea15cebb9..d975725cfd 100644
--- a/lib/closeout.h
+++ b/lib/closeout.h
@@ -1,6 +1,6 @@
 /* Close standard output and standard error.
 
-   Copyright (C) 1998, 2000, 2003-2004, 2006, 2008-2022 Free Software
+   Copyright (C) 1998, 2000, 2003-2004, 2006, 2008-2023 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/cnd.c b/lib/cnd.c
index 170ab5dbe3..c4858a9638 100644
--- a/lib/cnd.c
+++ b/lib/cnd.c
@@ -1,5 +1,5 @@
 /* ISO C 11 condition variables for multithreading.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/concat-filename.c b/lib/concat-filename.c
index f05484904e..62842a69cb 100644
--- a/lib/concat-filename.c
+++ b/lib/concat-filename.c
@@ -1,5 +1,5 @@
 /* Construct a full filename from a directory and a relative filename.
-   Copyright (C) 2001-2004, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2004, 2006-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/concat-filename.h b/lib/concat-filename.h
index 0348b0d93a..0912226387 100644
--- a/lib/concat-filename.h
+++ b/lib/concat-filename.h
@@ -1,5 +1,5 @@
 /* Construct a full filename from a directory and a relative filename.
-   Copyright (C) 2001-2004, 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2004, 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/connect.c b/lib/connect.c
index d1600634e2..1ac4a74bd9 100644
--- a/lib/connect.c
+++ b/lib/connect.c
@@ -1,6 +1,6 @@
 /* connect.c --- wrappers for Windows connect function
 
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/copy-acl.c b/lib/copy-acl.c
index 5fc42b7f63..3606a5017d 100644
--- a/lib/copy-acl.c
+++ b/lib/copy-acl.c
@@ -1,6 +1,6 @@
 /* Copy access control list from one file to file.  -*- coding: utf-8 -*-
 
-   Copyright (C) 2002-2003, 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002-2003, 2005-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/copy-file-range.c b/lib/copy-file-range.c
index 1ec7f4de67..747a5a8ad1 100644
--- a/lib/copy-file-range.c
+++ b/lib/copy-file-range.c
@@ -1,5 +1,5 @@
 /* Stub for copy_file_range
-   Copyright 2019-2022 Free Software Foundation, Inc.
+   Copyright 2019-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/copy-file.c b/lib/copy-file.c
index 413345a202..78da3996bb 100644
--- a/lib/copy-file.c
+++ b/lib/copy-file.c
@@ -1,5 +1,5 @@
 /* Copying of files.
-   Copyright (C) 2001-2003, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2003, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <haible@clisp.cons.org>, 2001.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/copy-file.h b/lib/copy-file.h
index d933863972..f6af295b9a 100644
--- a/lib/copy-file.h
+++ b/lib/copy-file.h
@@ -1,5 +1,5 @@
 /* Copying of files.
-   Copyright (C) 2001-2003, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2003, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <haible@clisp.cons.org>, 2001.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/copysign.c b/lib/copysign.c
index 6133465742..c99b2ed88a 100644
--- a/lib/copysign.c
+++ b/lib/copysign.c
@@ -1,5 +1,5 @@
 /* Copy sign into another 'double' number.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/copysignf.c b/lib/copysignf.c
index 598c710526..65e1bf7ac6 100644
--- a/lib/copysignf.c
+++ b/lib/copysignf.c
@@ -1,5 +1,5 @@
 /* Copy sign into another 'float' number.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/copysignl.c b/lib/copysignl.c
index 2d0a6b0393..a5d1130c95 100644
--- a/lib/copysignl.c
+++ b/lib/copysignl.c
@@ -1,5 +1,5 @@
 /* Copy sign into another 'long double' number.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/cosf.c b/lib/cosf.c
index 28dedb425d..45c5da7f1f 100644
--- a/lib/cosf.c
+++ b/lib/cosf.c
@@ -1,5 +1,5 @@
 /* Cosine function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/coshf.c b/lib/coshf.c
index 9e1905f1e0..c42eeb6e93 100644
--- a/lib/coshf.c
+++ b/lib/coshf.c
@@ -1,5 +1,5 @@
 /* Hyperbolic cosine function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/cosl.c b/lib/cosl.c
index 789c2ca469..0e3aa04206 100644
--- a/lib/cosl.c
+++ b/lib/cosl.c
@@ -1,6 +1,6 @@
 /* cos (cosine) function with 'long double' argument.
 
-   Copyright (C) 2003-2022 Free Software Foundation, Inc.
+   Copyright (C) 2003-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/count-leading-zeros.c b/lib/count-leading-zeros.c
index 8eb1d2c100..949f156eab 100644
--- a/lib/count-leading-zeros.c
+++ b/lib/count-leading-zeros.c
@@ -1,6 +1,6 @@
 /* Count the number of leading 0 bits in a word.
 
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/count-leading-zeros.h b/lib/count-leading-zeros.h
index 4b4f5d4f9a..99151d695b 100644
--- a/lib/count-leading-zeros.h
+++ b/lib/count-leading-zeros.h
@@ -1,5 +1,5 @@
 /* count-leading-zeros.h -- counts the number of leading 0 bits in a word.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/count-one-bits.c b/lib/count-one-bits.c
index 67a61dad61..8a348f2e5a 100644
--- a/lib/count-one-bits.c
+++ b/lib/count-one-bits.c
@@ -1,6 +1,6 @@
 /* Count the number of 1-bits in a word.
 
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/count-one-bits.h b/lib/count-one-bits.h
index 7d24c45a0d..01a60b77b8 100644
--- a/lib/count-one-bits.h
+++ b/lib/count-one-bits.h
@@ -1,5 +1,5 @@
 /* count-one-bits.h -- counts the number of 1-bits in a word.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/count-trailing-zeros.c b/lib/count-trailing-zeros.c
index 143dcda55d..f6fddab423 100644
--- a/lib/count-trailing-zeros.c
+++ b/lib/count-trailing-zeros.c
@@ -1,6 +1,6 @@
 /* Count the number of trailing 0 bits in a word.
 
-   Copyright 2013-2022 Free Software Foundation, Inc.
+   Copyright 2013-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/count-trailing-zeros.h b/lib/count-trailing-zeros.h
index 61fbdf2980..ef8e164126 100644
--- a/lib/count-trailing-zeros.h
+++ b/lib/count-trailing-zeros.h
@@ -1,5 +1,5 @@
 /* count-trailing-zeros.h -- counts the number of trailing 0 bits in a word.
-   Copyright 2013-2022 Free Software Foundation, Inc.
+   Copyright 2013-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/crc.c b/lib/crc.c
index 3f4d457f8a..cdc46ab0c0 100644
--- a/lib/crc.c
+++ b/lib/crc.c
@@ -1,5 +1,5 @@
 /* crc.c -- cyclic redundancy checks
-   Copyright (C) 2005-2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2006, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/crc.h b/lib/crc.h
index c0345aa181..ff22d1c0dd 100644
--- a/lib/crc.h
+++ b/lib/crc.h
@@ -1,5 +1,5 @@
 /* crc.h -- cyclic redundancy checks
-   Copyright (C) 2005, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/creat-safer.c b/lib/creat-safer.c
index 35e5ed2a2c..cd9b4cbaab 100644
--- a/lib/creat-safer.c
+++ b/lib/creat-safer.c
@@ -1,6 +1,6 @@
 /* Invoke creat, but avoid some glitches.
 
-   Copyright (C) 2005-2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2006, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/creat.c b/lib/creat.c
index b0890a0c58..dad7b2da45 100644
--- a/lib/creat.c
+++ b/lib/creat.c
@@ -1,5 +1,5 @@
 /* Create a file.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/csharpcomp.c b/lib/csharpcomp.c
index aab7724b4c..03b7da1f7b 100644
--- a/lib/csharpcomp.c
+++ b/lib/csharpcomp.c
@@ -1,5 +1,5 @@
 /* Compile a C# program.
-   Copyright (C) 2003-2022 Free Software Foundation, Inc.
+   Copyright (C) 2003-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2003.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/csharpcomp.h b/lib/csharpcomp.h
index b60c84cccd..db68d60f6d 100644
--- a/lib/csharpcomp.h
+++ b/lib/csharpcomp.h
@@ -1,5 +1,5 @@
 /* Compile a C# program.
-   Copyright (C) 2003, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2003, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2003.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/csharpexec.c b/lib/csharpexec.c
index 25e5440d38..2e30198c29 100644
--- a/lib/csharpexec.c
+++ b/lib/csharpexec.c
@@ -1,5 +1,5 @@
 /* Execute a C# program.
-   Copyright (C) 2003-2022 Free Software Foundation, Inc.
+   Copyright (C) 2003-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2003.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/csharpexec.h b/lib/csharpexec.h
index d9c6557570..4644577fcf 100644
--- a/lib/csharpexec.h
+++ b/lib/csharpexec.h
@@ -1,5 +1,5 @@
 /* Execute a C# program.
-   Copyright (C) 2003, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2003, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2003.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/ctime.c b/lib/ctime.c
index 960cb64c48..5b7fd35baa 100644
--- a/lib/ctime.c
+++ b/lib/ctime.c
@@ -1,5 +1,5 @@
 /* Work around platform bugs in ctime.
-   Copyright (C) 2017-2022 Free Software Foundation, Inc.
+   Copyright (C) 2017-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/ctype.in.h b/lib/ctype.in.h
index dc81170d5e..9ae63f911a 100644
--- a/lib/ctype.in.h
+++ b/lib/ctype.in.h
@@ -1,6 +1,6 @@
 /* A substitute for ISO C99 <ctype.h>, for platforms on which it is incomplete.
 
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/cycle-check.c b/lib/cycle-check.c
index 70eaaac084..9ccbdc507f 100644
--- a/lib/cycle-check.c
+++ b/lib/cycle-check.c
@@ -1,6 +1,6 @@
 /* help detect directory cycles efficiently
 
-   Copyright (C) 2003-2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2003-2006, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/cycle-check.h b/lib/cycle-check.h
index 130de4d65e..15109d3940 100644
--- a/lib/cycle-check.h
+++ b/lib/cycle-check.h
@@ -1,6 +1,6 @@
 /* help detect directory cycles efficiently
 
-   Copyright (C) 2003-2004, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2003-2004, 2006, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/des.c b/lib/des.c
index e7fff1e829..3aad65170b 100644
--- a/lib/des.c
+++ b/lib/des.c
@@ -1,5 +1,5 @@
 /* des.c --- DES and Triple-DES encryption/decryption Algorithm
- * Copyright (C) 1998-1999, 2001-2007, 2009-2022 Free Software Foundation, Inc.
+ * Copyright (C) 1998-1999, 2001-2007, 2009-2023 Free Software Foundation, Inc.
  *
  * This file is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Lesser General Public License as
diff --git a/lib/des.h b/lib/des.h
index f2863cd19f..f6ea5e6562 100644
--- a/lib/des.h
+++ b/lib/des.h
@@ -1,5 +1,5 @@
 /* des.h --- DES cipher implementation.
- * Copyright (C) 2005, 2007, 2009-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2005, 2007, 2009-2023 Free Software Foundation, Inc.
  *
  * This file is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Lesser General Public License as
diff --git a/lib/dev-ino.h b/lib/dev-ino.h
index dac02409d4..2767d0a6d6 100644
--- a/lib/dev-ino.h
+++ b/lib/dev-ino.h
@@ -1,5 +1,5 @@
 /* A simple (device, inode) struct.
-   Copyright (C) 2003-2022 Free Software Foundation, Inc.
+   Copyright (C) 2003-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/dfa.c b/lib/dfa.c
index 4f8367af3f..57df1e0421 100644
--- a/lib/dfa.c
+++ b/lib/dfa.c
@@ -1,5 +1,5 @@
 /* dfa.c - deterministic extended regexp routines for GNU
-   Copyright (C) 1988, 1998, 2000, 2002, 2004-2005, 2007-2022 Free Software
+   Copyright (C) 1988, 1998, 2000, 2002, 2004-2005, 2007-2023 Free Software
    Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
diff --git a/lib/dfa.h b/lib/dfa.h
index 3e3a938aaa..6ac30ffac3 100644
--- a/lib/dfa.h
+++ b/lib/dfa.h
@@ -1,5 +1,5 @@
 /* dfa.h - declarations for GNU deterministic regexp compiler
-   Copyright (C) 1988, 1998, 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1988, 1998, 2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/di-set.c b/lib/di-set.c
index f8d2558181..6705a148ab 100644
--- a/lib/di-set.c
+++ b/lib/di-set.c
@@ -1,6 +1,6 @@
 /* Set operations for device-inode pairs stored in a space-efficient manner.
 
-   Copyright 2009-2022 Free Software Foundation, Inc.
+   Copyright 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/di-set.h b/lib/di-set.h
index b31a7f2cc6..10dacd584e 100644
--- a/lib/di-set.h
+++ b/lib/di-set.h
@@ -1,5 +1,5 @@
 /* Manipulate sets of device-inode pairs efficiently.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/diffseq.h b/lib/diffseq.h
index a8b0e7bd40..dfaf4f295e 100644
--- a/lib/diffseq.h
+++ b/lib/diffseq.h
@@ -1,6 +1,6 @@
 /* Analyze differences between two vectors.
 
-   Copyright (C) 1988-1989, 1992-1995, 2001-2004, 2006-2022 Free Software
+   Copyright (C) 1988-1989, 1992-1995, 2001-2004, 2006-2023 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/dirchownmod.c b/lib/dirchownmod.c
index 2bc7076b08..b3dbac3374 100644
--- a/lib/dirchownmod.c
+++ b/lib/dirchownmod.c
@@ -1,6 +1,6 @@
 /* Change the ownership and mode bits of a directory.
 
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/dirchownmod.h b/lib/dirchownmod.h
index bb48be2d26..699e6cb32a 100644
--- a/lib/dirchownmod.h
+++ b/lib/dirchownmod.h
@@ -1,6 +1,6 @@
 /* Change the ownership and mode bits of a directory.
 
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published
diff --git a/lib/dirent--.h b/lib/dirent--.h
index e336ecfd01..485294ea0e 100644
--- a/lib/dirent--.h
+++ b/lib/dirent--.h
@@ -1,6 +1,6 @@
 /* Like dirent.h, but redefine some names to avoid glitches.
 
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/dirent-private.h b/lib/dirent-private.h
index 30cf5d90b4..f454e0e39a 100644
--- a/lib/dirent-private.h
+++ b/lib/dirent-private.h
@@ -1,5 +1,5 @@
 /* Private details of the DIR type.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/dirent-safer.h b/lib/dirent-safer.h
index 59b2794132..e7d00c5771 100644
--- a/lib/dirent-safer.h
+++ b/lib/dirent-safer.h
@@ -1,6 +1,6 @@
 /* Invoke dirent-like functions, but avoid some glitches.
 
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/dirent.in.h b/lib/dirent.in.h
index f28288d1ac..2aaabd054a 100644
--- a/lib/dirent.in.h
+++ b/lib/dirent.in.h
@@ -1,5 +1,5 @@
 /* A GNU-like <dirent.h>.
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/dirfd.c b/lib/dirfd.c
index 4104683fbf..b2b1d25cdb 100644
--- a/lib/dirfd.c
+++ b/lib/dirfd.c
@@ -1,6 +1,6 @@
 /* dirfd.c -- return the file descriptor associated with an open DIR*
 
-   Copyright (C) 2001, 2006, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001, 2006, 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/dirname-lgpl.c b/lib/dirname-lgpl.c
index d54f6a910f..e9454af397 100644
--- a/lib/dirname-lgpl.c
+++ b/lib/dirname-lgpl.c
@@ -1,6 +1,6 @@
 /* dirname.c -- return all but the last element in a file name
 
-   Copyright (C) 1990, 1998, 2000-2001, 2003-2006, 2009-2022 Free Software
+   Copyright (C) 1990, 1998, 2000-2001, 2003-2006, 2009-2023 Free Software
    Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/dirname.c b/lib/dirname.c
index 3d2aaf1ebc..e72f7130f1 100644
--- a/lib/dirname.c
+++ b/lib/dirname.c
@@ -1,6 +1,6 @@
 /* dirname.c -- return all but the last element in a file name
 
-   Copyright (C) 1990, 1998, 2000-2001, 2003-2006, 2009-2022 Free Software
+   Copyright (C) 1990, 1998, 2000-2001, 2003-2006, 2009-2023 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/dirname.h b/lib/dirname.h
index 573fa6c1c7..f98e83bd4c 100644
--- a/lib/dirname.h
+++ b/lib/dirname.h
@@ -1,6 +1,6 @@
 /* Take file names apart into directory and base names.
 
-   Copyright (C) 1998, 2001, 2003-2006, 2009-2022 Free Software Foundation,
+   Copyright (C) 1998, 2001, 2003-2006, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/dosname.h b/lib/dosname.h
index e0426ef463..0cad70beba 100644
--- a/lib/dosname.h
+++ b/lib/dosname.h
@@ -1,6 +1,6 @@
 /* File names on MS-DOS/Windows systems.
 
-   Copyright (C) 2000-2001, 2004-2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2000-2001, 2004-2006, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/dprintf.c b/lib/dprintf.c
index 39a1e8282b..33dd4cd422 100644
--- a/lib/dprintf.c
+++ b/lib/dprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to a file descriptor.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/dtoastr.c b/lib/dtoastr.c
index 71af14c9df..66b50995c7 100644
--- a/lib/dtoastr.c
+++ b/lib/dtoastr.c
@@ -1,6 +1,6 @@
 /* Convert 'double' to accurate string.
 
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published
diff --git a/lib/dtotimespec.c b/lib/dtotimespec.c
index b62a8bd6cf..28a44b6917 100644
--- a/lib/dtotimespec.c
+++ b/lib/dtotimespec.c
@@ -1,6 +1,6 @@
 /* Convert double to timespec.
 
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/dummy.c b/lib/dummy.c
index c8d3f91e99..0c6adfe1fb 100644
--- a/lib/dummy.c
+++ b/lib/dummy.c
@@ -1,5 +1,5 @@
 /* A dummy file, to prevent empty libraries from breaking builds.
-   Copyright (C) 2004, 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2004, 2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is in the public domain.  */
 
diff --git a/lib/dup-safer-flag.c b/lib/dup-safer-flag.c
index f87792a307..be1762b2a2 100644
--- a/lib/dup-safer-flag.c
+++ b/lib/dup-safer-flag.c
@@ -1,7 +1,7 @@
 /* Duplicate a file descriptor result, avoiding clobbering
    STD{IN,OUT,ERR}_FILENO, with specific flags.
 
-   Copyright (C) 2001, 2004-2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001, 2004-2006, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/dup-safer.c b/lib/dup-safer.c
index 38ff74cc7e..bb86a2e4f5 100644
--- a/lib/dup-safer.c
+++ b/lib/dup-safer.c
@@ -1,6 +1,6 @@
 /* Invoke dup, but avoid some glitches.
 
-   Copyright (C) 2001, 2004-2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001, 2004-2006, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/dup.c b/lib/dup.c
index 17a9c582ad..21e9f1f07d 100644
--- a/lib/dup.c
+++ b/lib/dup.c
@@ -1,6 +1,6 @@
 /* Duplicate an open file descriptor.
 
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/dup2.c b/lib/dup2.c
index 1c766ab38e..7d197ca312 100644
--- a/lib/dup2.c
+++ b/lib/dup2.c
@@ -1,6 +1,6 @@
 /* Duplicate an open file descriptor to a specified file descriptor.
 
-   Copyright (C) 1999, 2004-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2004-2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/dup3.c b/lib/dup3.c
index 300d12fb75..3c9e167539 100644
--- a/lib/dup3.c
+++ b/lib/dup3.c
@@ -1,5 +1,5 @@
 /* Copy a file descriptor, applying specific flags.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/duplocale.c b/lib/duplocale.c
index 0ecd989cd6..fcb2c58762 100644
--- a/lib/duplocale.c
+++ b/lib/duplocale.c
@@ -1,5 +1,5 @@
 /* Duplicate a locale object.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/dynarray.h b/lib/dynarray.h
index ca6439d3ad..9155910934 100644
--- a/lib/dynarray.h
+++ b/lib/dynarray.h
@@ -1,5 +1,5 @@
 /* Type-safe arrays which grow dynamically.
-   Copyright 2021-2022 Free Software Foundation, Inc.
+   Copyright 2021-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/eealloc.c b/lib/eealloc.c
index 42adc37a39..0e0eb197bd 100644
--- a/lib/eealloc.c
+++ b/lib/eealloc.c
@@ -1,6 +1,6 @@
 /* Memory allocation with expensive empty allocations.
 
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published
diff --git a/lib/eealloc.h b/lib/eealloc.h
index d624087eea..6a897072d7 100644
--- a/lib/eealloc.h
+++ b/lib/eealloc.h
@@ -1,5 +1,5 @@
 /* Memory allocation with expensive empty allocations.
-   Copyright (C) 2003, 2008, 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2003, 2008, 2010-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2003,
    based on prior work by Jim Meyering.
 
diff --git a/lib/eloop-threshold.h b/lib/eloop-threshold.h
index 8b31457119..510f261795 100644
--- a/lib/eloop-threshold.h
+++ b/lib/eloop-threshold.h
@@ -1,5 +1,5 @@
 /* Threshold at which to diagnose ELOOP.  Generic version.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/lib/errno.in.h b/lib/errno.in.h
index 3ec1845694..3dda9c260e 100644
--- a/lib/errno.in.h
+++ b/lib/errno.in.h
@@ -1,6 +1,6 @@
 /* A POSIX-like <errno.h>.
 
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/error.c b/lib/error.c
index 272d45e408..6875f134ed 100644
--- a/lib/error.c
+++ b/lib/error.c
@@ -1,5 +1,5 @@
 /* Error handler for noninteractive utilities
-   Copyright (C) 1990-1998, 2000-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1990-1998, 2000-2007, 2009-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/error.h b/lib/error.h
index 45ec2a5e3d..a240526a58 100644
--- a/lib/error.h
+++ b/lib/error.h
@@ -1,5 +1,5 @@
 /* Declaration for error-reporting function
-   Copyright (C) 1995-1997, 2003, 2006, 2008-2022 Free Software Foundation,
+   Copyright (C) 1995-1997, 2003, 2006, 2008-2023 Free Software Foundation,
    Inc.
    This file is part of the GNU C Library.
 
diff --git a/lib/euidaccess.c b/lib/euidaccess.c
index 97388c73bb..c2ecbeff52 100644
--- a/lib/euidaccess.c
+++ b/lib/euidaccess.c
@@ -1,6 +1,6 @@
 /* euidaccess -- check if effective user id can access file
 
-   Copyright (C) 1990-1991, 1995, 1998, 2000, 2003-2006, 2008-2022 Free
+   Copyright (C) 1990-1991, 1995, 1998, 2000, 2003-2006, 2008-2023 Free
    Software Foundation, Inc.
 
    This file is part of the GNU C Library.
diff --git a/lib/exclude.c b/lib/exclude.c
index 4b96dbfc3f..7bd0ec8c71 100644
--- a/lib/exclude.c
+++ b/lib/exclude.c
@@ -1,6 +1,6 @@
 /* exclude.c -- exclude file names
 
-   Copyright (C) 1992-1994, 1997, 1999-2007, 2009-2022 Free Software
+   Copyright (C) 1992-1994, 1997, 1999-2007, 2009-2023 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/exclude.h b/lib/exclude.h
index f66ee3b4dc..a16b8171b6 100644
--- a/lib/exclude.h
+++ b/lib/exclude.h
@@ -1,6 +1,6 @@
 /* exclude.h -- declarations for excluding file names
 
-   Copyright (C) 1992-1994, 1997, 1999, 2001-2003, 2005-2006, 2009-2022 Free
+   Copyright (C) 1992-1994, 1997, 1999, 2001-2003, 2005-2006, 2009-2023 Free
    Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/execinfo.c b/lib/execinfo.c
index 4320b16c63..2048d00f5f 100644
--- a/lib/execinfo.c
+++ b/lib/execinfo.c
@@ -1,6 +1,6 @@
 /* Information about executables.
 
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/execinfo.in.h b/lib/execinfo.in.h
index 03c551a87b..ff9293b632 100644
--- a/lib/execinfo.in.h
+++ b/lib/execinfo.in.h
@@ -1,6 +1,6 @@
 /* Information about executables.
 
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as published by
diff --git a/lib/execl.c b/lib/execl.c
index fd40bfdc17..c05374dbfc 100644
--- a/lib/execl.c
+++ b/lib/execl.c
@@ -1,5 +1,5 @@
 /* execl() function: Execute a program, replacing the current process.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/execle.c b/lib/execle.c
index 93be1bb931..85ed92b16f 100644
--- a/lib/execle.c
+++ b/lib/execle.c
@@ -1,5 +1,5 @@
 /* execle() function: Execute a program, replacing the current process.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/execlp.c b/lib/execlp.c
index 8daba8c052..cc53f09573 100644
--- a/lib/execlp.c
+++ b/lib/execlp.c
@@ -1,5 +1,5 @@
 /* execlp() function: Execute a program, replacing the current process.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/execute.c b/lib/execute.c
index ce6804b9c1..b2164f1688 100644
--- a/lib/execute.c
+++ b/lib/execute.c
@@ -1,5 +1,5 @@
 /* Creation of autonomous subprocesses.
-   Copyright (C) 2001-2004, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2004, 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <haible@clisp.cons.org>, 2001.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/execute.h b/lib/execute.h
index 1a04f32d75..4213076b74 100644
--- a/lib/execute.h
+++ b/lib/execute.h
@@ -1,5 +1,5 @@
 /* Creation of autonomous subprocesses.
-   Copyright (C) 2001-2003, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2003, 2008-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <haible@clisp.cons.org>, 2001.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/execv.c b/lib/execv.c
index 950c1b4c9a..6464589d7e 100644
--- a/lib/execv.c
+++ b/lib/execv.c
@@ -1,5 +1,5 @@
 /* execv() function: Execute a program, replacing the current process.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/execve.c b/lib/execve.c
index 2fa3f711d5..8b8dd6c884 100644
--- a/lib/execve.c
+++ b/lib/execve.c
@@ -1,5 +1,5 @@
 /* execve() function: Execute a program, replacing the current process.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/execvp.c b/lib/execvp.c
index e10594b474..caee08a04c 100644
--- a/lib/execvp.c
+++ b/lib/execvp.c
@@ -1,5 +1,5 @@
 /* execvp() function: Execute a program, replacing the current process.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/execvpe.c b/lib/execvpe.c
index 491cbb8eb5..b6d5af8716 100644
--- a/lib/execvpe.c
+++ b/lib/execvpe.c
@@ -1,5 +1,5 @@
 /* execvpe() function: Execute a program, replacing the current process.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/exitfail.c b/lib/exitfail.c
index 84fb0eff53..d67a130c05 100644
--- a/lib/exitfail.c
+++ b/lib/exitfail.c
@@ -1,6 +1,6 @@
 /* Failure exit status
 
-   Copyright (C) 2002-2003, 2005-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002-2003, 2005-2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/exitfail.h b/lib/exitfail.h
index 865f096a5e..85a6af64ad 100644
--- a/lib/exitfail.h
+++ b/lib/exitfail.h
@@ -1,6 +1,6 @@
 /* Failure exit status
 
-   Copyright (C) 2002, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/exp2.c b/lib/exp2.c
index bf61b5a64e..1ca5a4ab4d 100644
--- a/lib/exp2.c
+++ b/lib/exp2.c
@@ -1,5 +1,5 @@
 /* Exponential base 2 function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/exp2f.c b/lib/exp2f.c
index 0ff036a86d..a45c56179e 100644
--- a/lib/exp2f.c
+++ b/lib/exp2f.c
@@ -1,5 +1,5 @@
 /* Exponential base 2 function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/exp2l.c b/lib/exp2l.c
index c70f17c15c..0ef1924988 100644
--- a/lib/exp2l.c
+++ b/lib/exp2l.c
@@ -1,5 +1,5 @@
 /* Exponential base 2 function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/expf.c b/lib/expf.c
index fa5e84de30..2bc469f779 100644
--- a/lib/expf.c
+++ b/lib/expf.c
@@ -1,5 +1,5 @@
 /* Exponential function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/expl-table.c b/lib/expl-table.c
index 600907874b..5811889f96 100644
--- a/lib/expl-table.c
+++ b/lib/expl-table.c
@@ -1,5 +1,5 @@
 /* Exponential function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/expl.c b/lib/expl.c
index e82a83140f..067e5f2eba 100644
--- a/lib/expl.c
+++ b/lib/expl.c
@@ -1,5 +1,5 @@
 /* Exponential function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/explicit_bzero.c b/lib/explicit_bzero.c
index fc309f81d6..23e035889d 100644
--- a/lib/explicit_bzero.c
+++ b/lib/explicit_bzero.c
@@ -1,5 +1,5 @@
 /* Erasure of sensitive data, generic implementation.
-   Copyright (C) 2016-2022 Free Software Foundation, Inc.
+   Copyright (C) 2016-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/expm1.c b/lib/expm1.c
index 182c84fb08..515669f8e6 100644
--- a/lib/expm1.c
+++ b/lib/expm1.c
@@ -1,5 +1,5 @@
 /* Exponential function minus one.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/expm1f.c b/lib/expm1f.c
index 5e725c0dd7..c5577f4f60 100644
--- a/lib/expm1f.c
+++ b/lib/expm1f.c
@@ -1,5 +1,5 @@
 /* Exponential function minus one.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/expm1l.c b/lib/expm1l.c
index efca7e356e..0255d7708e 100644
--- a/lib/expm1l.c
+++ b/lib/expm1l.c
@@ -1,5 +1,5 @@
 /* Exponential function minus one.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/fabsf.c b/lib/fabsf.c
index faa2d916ad..3bd498937d 100644
--- a/lib/fabsf.c
+++ b/lib/fabsf.c
@@ -1,5 +1,5 @@
 /* Absolute value.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/fabsl.c b/lib/fabsl.c
index 32ddcc3559..a67795ee10 100644
--- a/lib/fabsl.c
+++ b/lib/fabsl.c
@@ -1,5 +1,5 @@
 /* Absolute value.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/faccessat.c b/lib/faccessat.c
index c1737d03a1..ac8977cfd6 100644
--- a/lib/faccessat.c
+++ b/lib/faccessat.c
@@ -1,5 +1,5 @@
 /* Check the access rights of a file relative to an open directory.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/fatal-signal.c b/lib/fatal-signal.c
index 1d930b14e1..90d5a9b651 100644
--- a/lib/fatal-signal.c
+++ b/lib/fatal-signal.c
@@ -1,5 +1,5 @@
 /* Emergency actions in case of a fatal signal.
-   Copyright (C) 2003-2004, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2003-2004, 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2003.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/fatal-signal.h b/lib/fatal-signal.h
index a784b58ba2..7baae2e15b 100644
--- a/lib/fatal-signal.h
+++ b/lib/fatal-signal.h
@@ -1,5 +1,5 @@
 /* Emergency actions in case of a fatal signal.
-   Copyright (C) 2003-2004, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2003-2004, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2003.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/fbufmode.c b/lib/fbufmode.c
index f9d66ca075..5db5e3a9a0 100644
--- a/lib/fbufmode.c
+++ b/lib/fbufmode.c
@@ -1,5 +1,5 @@
 /* Retrieve information about a FILE stream.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/fbufmode.h b/lib/fbufmode.h
index 341313c252..32d5282f00 100644
--- a/lib/fbufmode.h
+++ b/lib/fbufmode.h
@@ -1,5 +1,5 @@
 /* Retrieve information about a FILE stream.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/fchdir.c b/lib/fchdir.c
index 846890704d..4e62091605 100644
--- a/lib/fchdir.c
+++ b/lib/fchdir.c
@@ -1,5 +1,5 @@
 /* fchdir replacement.
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/fchmodat.c b/lib/fchmodat.c
index 164e2c4a95..a7b70a2af2 100644
--- a/lib/fchmodat.c
+++ b/lib/fchmodat.c
@@ -1,5 +1,5 @@
 /* Change the protections of file relative to an open directory.
-   Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/fchown-stub.c b/lib/fchown-stub.c
index 74df86ae72..05bfa42803 100644
--- a/lib/fchown-stub.c
+++ b/lib/fchown-stub.c
@@ -1,5 +1,5 @@
 /* Change ownership of a file.
-   Copyright (C) 2004-2022 Free Software Foundation, Inc.
+   Copyright (C) 2004-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/fchownat.c b/lib/fchownat.c
index ff368d356d..8d00ae587c 100644
--- a/lib/fchownat.c
+++ b/lib/fchownat.c
@@ -4,7 +4,7 @@
    when the buggy fchownat-with-AT_SYMLINK_NOFOLLOW operates on a symlink, it
    mistakenly affects the symlink referent, rather than the symlink itself.
 
-   Copyright (C) 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/fclose.c b/lib/fclose.c
index 562ab3ddfb..5231f660df 100644
--- a/lib/fclose.c
+++ b/lib/fclose.c
@@ -1,5 +1,5 @@
 /* fclose replacement.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/fcntl--.h b/lib/fcntl--.h
index e14739bc3c..d7611e1917 100644
--- a/lib/fcntl--.h
+++ b/lib/fcntl--.h
@@ -1,6 +1,6 @@
 /* Like fcntl.h, but redefine some names to avoid glitches.
 
-   Copyright (C) 2005, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/fcntl-safer.h b/lib/fcntl-safer.h
index c3f3e6fa97..576fc7b809 100644
--- a/lib/fcntl-safer.h
+++ b/lib/fcntl-safer.h
@@ -1,6 +1,6 @@
 /* Invoke fcntl-like functions, but avoid some glitches.
 
-   Copyright (C) 2005, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/fcntl.c b/lib/fcntl.c
index f9753c4035..e220800845 100644
--- a/lib/fcntl.c
+++ b/lib/fcntl.c
@@ -1,6 +1,6 @@
 /* Provide file descriptor control.
 
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/fcntl.in.h b/lib/fcntl.in.h
index 9270ced897..e034eaf9f5 100644
--- a/lib/fcntl.in.h
+++ b/lib/fcntl.in.h
@@ -1,6 +1,6 @@
 /* Like <fcntl.h>, but with non-working flags defined to 0.
 
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/fd-hook.c b/lib/fd-hook.c
index 64a7a80c06..362611507e 100644
--- a/lib/fd-hook.c
+++ b/lib/fd-hook.c
@@ -1,5 +1,5 @@
 /* Hook for making file descriptor functions close(), ioctl() extensible.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/fd-hook.h b/lib/fd-hook.h
index d6c4964d1c..6bf3c24da1 100644
--- a/lib/fd-hook.h
+++ b/lib/fd-hook.h
@@ -1,5 +1,5 @@
 /* Hook for making file descriptor functions close(), ioctl() extensible.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/fd-safer-flag.c b/lib/fd-safer-flag.c
index 2e07cb9bf0..9aef2710d5 100644
--- a/lib/fd-safer-flag.c
+++ b/lib/fd-safer-flag.c
@@ -1,7 +1,7 @@
 /* Adjust a file descriptor result so that it avoids clobbering
    STD{IN,OUT,ERR}_FILENO, with specific flags.
 
-   Copyright (C) 2005-2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2006, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/fd-safer.c b/lib/fd-safer.c
index e37b7b3ade..9c40a5ae6b 100644
--- a/lib/fd-safer.c
+++ b/lib/fd-safer.c
@@ -1,6 +1,6 @@
 /* Return a safer copy of a file descriptor.
 
-   Copyright (C) 2005-2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2006, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/fdatasync.c b/lib/fdatasync.c
index 4923f5e8b6..0ade6d9b7f 100644
--- a/lib/fdatasync.c
+++ b/lib/fdatasync.c
@@ -1,6 +1,6 @@
 /* Emulate fdatasync on platforms that lack it.
 
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/fdopen.c b/lib/fdopen.c
index f1c5dff1d1..6cd6470762 100644
--- a/lib/fdopen.c
+++ b/lib/fdopen.c
@@ -1,5 +1,5 @@
 /* Open a stream with a given file descriptor.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/fdopendir.c b/lib/fdopendir.c
index c2b0e1ed34..aa841e3e81 100644
--- a/lib/fdopendir.c
+++ b/lib/fdopendir.c
@@ -1,5 +1,5 @@
 /* provide a replacement fdopendir function
-   Copyright (C) 2004-2022 Free Software Foundation, Inc.
+   Copyright (C) 2004-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/fdutimensat.c b/lib/fdutimensat.c
index aa9641e5b2..5b801e0dd7 100644
--- a/lib/fdutimensat.c
+++ b/lib/fdutimensat.c
@@ -1,6 +1,6 @@
 /* Set file access and modification times.
 
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify it
    under the terms of the GNU General Public License as published by the
diff --git a/lib/fflush.c b/lib/fflush.c
index 69511cdeb6..d38f5f00a3 100644
--- a/lib/fflush.c
+++ b/lib/fflush.c
@@ -1,5 +1,5 @@
 /* fflush.c -- allow flushing input streams
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/ffs.c b/lib/ffs.c
index 706d284cd9..76202d0960 100644
--- a/lib/ffs.c
+++ b/lib/ffs.c
@@ -1,5 +1,5 @@
 /* ffs.c -- find the first set bit in a word.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/ffsl.c b/lib/ffsl.c
index 6d92024a9c..c225c8f39f 100644
--- a/lib/ffsl.c
+++ b/lib/ffsl.c
@@ -1,6 +1,6 @@
 /* Find the first set bit in a 'long' word.
 
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/ffsl.h b/lib/ffsl.h
index 682109eb59..49d4c233d4 100644
--- a/lib/ffsl.h
+++ b/lib/ffsl.h
@@ -1,5 +1,5 @@
 /* ffsl.h -- find the first set bit in a word.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/ffsll.c b/lib/ffsll.c
index e84a2077b8..d05217de60 100644
--- a/lib/ffsll.c
+++ b/lib/ffsll.c
@@ -1,6 +1,6 @@
 /* Find the first set bit in a 'long long' word.
 
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/file-has-acl.c b/lib/file-has-acl.c
index 7876edc4f0..b31a2ea252 100644
--- a/lib/file-has-acl.c
+++ b/lib/file-has-acl.c
@@ -1,6 +1,6 @@
 /* Test whether a file has a nontrivial ACL.  -*- coding: utf-8 -*-
 
-   Copyright (C) 2002-2003, 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002-2003, 2005-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/file-set.c b/lib/file-set.c
index 3270551bf4..44cf643025 100644
--- a/lib/file-set.c
+++ b/lib/file-set.c
@@ -1,5 +1,5 @@
 /* Specialized functions to manipulate a set of files.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/file-set.h b/lib/file-set.h
index e95879f831..c2508b0134 100644
--- a/lib/file-set.h
+++ b/lib/file-set.h
@@ -1,5 +1,5 @@
 /* Very specialized set-of-files code.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/file-type.c b/lib/file-type.c
index bfdf9dcb80..359b4b8ebd 100644
--- a/lib/file-type.c
+++ b/lib/file-type.c
@@ -1,6 +1,6 @@
 /* Return a string describing the type of a file.
 
-   Copyright (C) 1993-1994, 2001-2002, 2004-2006, 2009-2022 Free Software
+   Copyright (C) 1993-1994, 2001-2002, 2004-2006, 2009-2023 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/file-type.h b/lib/file-type.h
index 014e5bc86c..3301729e5a 100644
--- a/lib/file-type.h
+++ b/lib/file-type.h
@@ -1,6 +1,6 @@
 /* Return a string describing the type of a file.
 
-   Copyright (C) 1993-1994, 2001-2002, 2004-2005, 2009-2022 Free Software
+   Copyright (C) 1993-1994, 2001-2002, 2004-2005, 2009-2023 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/fileblocks.c b/lib/fileblocks.c
index 213ba5a76d..ad47111c13 100644
--- a/lib/fileblocks.c
+++ b/lib/fileblocks.c
@@ -1,6 +1,6 @@
 /* Convert file size to number of blocks on System V-like machines.
 
-   Copyright (C) 1990, 1997-1999, 2004-2006, 2009-2022 Free Software
+   Copyright (C) 1990, 1997-1999, 2004-2006, 2009-2023 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/filemode.c b/lib/filemode.c
index a8cbea844c..318d287f27 100644
--- a/lib/filemode.c
+++ b/lib/filemode.c
@@ -1,6 +1,6 @@
 /* filemode.c -- make a string describing file modes
 
-   Copyright (C) 1985, 1990, 1993, 1998-2000, 2004, 2006, 2009-2022 Free
+   Copyright (C) 1985, 1990, 1993, 1998-2000, 2004, 2006, 2009-2023 Free
    Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/filemode.h b/lib/filemode.h
index bf38181cdc..15a8dcc376 100644
--- a/lib/filemode.h
+++ b/lib/filemode.h
@@ -1,6 +1,6 @@
 /* Make a string describing file modes.
 
-   Copyright (C) 1998-1999, 2003, 2006, 2009-2022 Free Software Foundation,
+   Copyright (C) 1998-1999, 2003, 2006, 2009-2023 Free Software Foundation,
    Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/filenamecat-lgpl.c b/lib/filenamecat-lgpl.c
index 56981aac16..6d7ed8481d 100644
--- a/lib/filenamecat-lgpl.c
+++ b/lib/filenamecat-lgpl.c
@@ -1,6 +1,6 @@
 /* Concatenate two arbitrary file names.
 
-   Copyright (C) 1996-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1996-2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/filenamecat.c b/lib/filenamecat.c
index 0af465af9e..d6c88286f3 100644
--- a/lib/filenamecat.c
+++ b/lib/filenamecat.c
@@ -1,6 +1,6 @@
 /* Concatenate two arbitrary file names.
 
-   Copyright (C) 1996-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1996-2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/filenamecat.h b/lib/filenamecat.h
index f11bd289fe..ab867f9c81 100644
--- a/lib/filenamecat.h
+++ b/lib/filenamecat.h
@@ -1,6 +1,6 @@
 /* Concatenate two arbitrary file names.
 
-   Copyright (C) 1996-1997, 2003, 2005, 2007, 2009-2022 Free Software
+   Copyright (C) 1996-1997, 2003, 2005, 2007, 2009-2023 Free Software
    Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/filevercmp.c b/lib/filevercmp.c
index 844505a6bf..78e1faff53 100644
--- a/lib/filevercmp.c
+++ b/lib/filevercmp.c
@@ -2,7 +2,7 @@
 
    Copyright (C) 1995 Ian Jackson <iwj10@cus.cam.ac.uk>
    Copyright (C) 2001 Anthony Towns <aj@azure.humbug.org.au>
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/filevercmp.h b/lib/filevercmp.h
index 57949760b2..6b81ab32a7 100644
--- a/lib/filevercmp.h
+++ b/lib/filevercmp.h
@@ -2,7 +2,7 @@
 
    Copyright (C) 1995 Ian Jackson <iwj10@cus.cam.ac.uk>
    Copyright (C) 2001 Anthony Towns <aj@azure.humbug.org.au>
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/findprog-in.c b/lib/findprog-in.c
index 0957488246..c0768c29e2 100644
--- a/lib/findprog-in.c
+++ b/lib/findprog-in.c
@@ -1,5 +1,5 @@
 /* Locating a program in a given path.
-   Copyright (C) 2001-2004, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2004, 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <haible@clisp.cons.org>, 2001, 2019.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/findprog-lgpl.c b/lib/findprog-lgpl.c
index b0e6afa3f5..7a305ac183 100644
--- a/lib/findprog-lgpl.c
+++ b/lib/findprog-lgpl.c
@@ -1,5 +1,5 @@
 /* Locating a program in PATH.
-   Copyright (C) 2001-2004, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2004, 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <haible@clisp.cons.org>, 2008.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/findprog.c b/lib/findprog.c
index 961277ab95..6723c1b3b2 100644
--- a/lib/findprog.c
+++ b/lib/findprog.c
@@ -1,5 +1,5 @@
 /* Locating a program in PATH.
-   Copyright (C) 2001-2004, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2004, 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <haible@clisp.cons.org>, 2001.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/findprog.h b/lib/findprog.h
index cba0297deb..6223394a46 100644
--- a/lib/findprog.h
+++ b/lib/findprog.h
@@ -1,5 +1,5 @@
 /* Locating a program in PATH.
-   Copyright (C) 2001-2003, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2003, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <haible@clisp.cons.org>, 2001.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/flexmember.h b/lib/flexmember.h
index 1545639f75..a6cc876a6d 100644
--- a/lib/flexmember.h
+++ b/lib/flexmember.h
@@ -1,6 +1,6 @@
 /* Sizes of structs with flexible array members.
 
-   Copyright 2016-2022 Free Software Foundation, Inc.
+   Copyright 2016-2023 Free Software Foundation, Inc.
 
    This file is part of the GNU C Library.
 
diff --git a/lib/float+.h b/lib/float+.h
index 9ab45208d8..e7531e46a3 100644
--- a/lib/float+.h
+++ b/lib/float+.h
@@ -1,5 +1,5 @@
 /* Supplemental information about the floating-point formats.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2007.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/float.c b/lib/float.c
index de8506450e..f81ff33d3b 100644
--- a/lib/float.c
+++ b/lib/float.c
@@ -1,5 +1,5 @@
 /* Auxiliary definitions for <float.h>.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/float.in.h b/lib/float.in.h
index a4183765df..bf2c502c7f 100644
--- a/lib/float.in.h
+++ b/lib/float.in.h
@@ -1,6 +1,6 @@
 /* A correct <float.h>.
 
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/flock.c b/lib/flock.c
index 28773d5c36..85433e72ba 100644
--- a/lib/flock.c
+++ b/lib/flock.c
@@ -6,7 +6,7 @@
 
    Written by Richard W.M. Jones <rjones.at.redhat.com>
 
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
diff --git a/lib/floor.c b/lib/floor.c
index 3e4f8d0582..238f48799f 100644
--- a/lib/floor.c
+++ b/lib/floor.c
@@ -1,5 +1,5 @@
 /* Round towards negative infinity.
-   Copyright (C) 2007, 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2010-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/floorf.c b/lib/floorf.c
index 457ec75029..e465c180a9 100644
--- a/lib/floorf.c
+++ b/lib/floorf.c
@@ -1,5 +1,5 @@
 /* Round towards negative infinity.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/floorl.c b/lib/floorl.c
index cdddc7d1ee..6d837be213 100644
--- a/lib/floorl.c
+++ b/lib/floorl.c
@@ -1,5 +1,5 @@
 /* Round towards negative infinity.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/fma.c b/lib/fma.c
index 55f4fcdc98..69e7047c7f 100644
--- a/lib/fma.c
+++ b/lib/fma.c
@@ -1,5 +1,5 @@
 /* Fused multiply-add.
-   Copyright (C) 2007, 2009, 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009, 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/fmaf.c b/lib/fmaf.c
index 77429e552c..74cdc6f415 100644
--- a/lib/fmaf.c
+++ b/lib/fmaf.c
@@ -1,5 +1,5 @@
 /* Fused multiply-add.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/fmal.c b/lib/fmal.c
index 3d660339de..903965d6e5 100644
--- a/lib/fmal.c
+++ b/lib/fmal.c
@@ -1,5 +1,5 @@
 /* Fused multiply-add.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/fmod.c b/lib/fmod.c
index 5fb3d7f807..8961569f3b 100644
--- a/lib/fmod.c
+++ b/lib/fmod.c
@@ -1,5 +1,5 @@
 /* Remainder.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/fmodf.c b/lib/fmodf.c
index 08963fdba4..4d09d167e8 100644
--- a/lib/fmodf.c
+++ b/lib/fmodf.c
@@ -1,5 +1,5 @@
 /* Remainder.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/fmodl.c b/lib/fmodl.c
index b35b51b544..1de0d5915f 100644
--- a/lib/fmodl.c
+++ b/lib/fmodl.c
@@ -1,5 +1,5 @@
 /* Remainder.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/fnmatch.c b/lib/fnmatch.c
index 5568422549..7c9c4e0f24 100644
--- a/lib/fnmatch.c
+++ b/lib/fnmatch.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991-2022 Free Software Foundation, Inc.
+/* Copyright (C) 1991-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/lib/fnmatch.in.h b/lib/fnmatch.in.h
index a282c09f1d..e8d19e2751 100644
--- a/lib/fnmatch.in.h
+++ b/lib/fnmatch.in.h
@@ -1,5 +1,5 @@
 /* Substitute for and wrapper around <fnmatch.h>.
-   Copyright (C) 1991-1993, 1996-1999, 2001-2003, 2005, 2007, 2009-2022 Free
+   Copyright (C) 1991-1993, 1996-1999, 2001-2003, 2005, 2007, 2009-2023 Free
    Software Foundation, Inc.
 
    This file is part of the GNU C Library.
diff --git a/lib/fnmatch_loop.c b/lib/fnmatch_loop.c
index 3050f0cdcc..68a3b7a5bc 100644
--- a/lib/fnmatch_loop.c
+++ b/lib/fnmatch_loop.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991-2022 Free Software Foundation, Inc.
+/* Copyright (C) 1991-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/lib/fopen-safer.c b/lib/fopen-safer.c
index c201e4a54d..bad77b85f0 100644
--- a/lib/fopen-safer.c
+++ b/lib/fopen-safer.c
@@ -1,6 +1,6 @@
 /* Invoke fopen, but avoid some glitches.
 
-   Copyright (C) 2001, 2004-2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001, 2004-2006, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/fopen.c b/lib/fopen.c
index 334a7b653a..f8469a0bbc 100644
--- a/lib/fopen.c
+++ b/lib/fopen.c
@@ -1,5 +1,5 @@
 /* Open a stream to a file.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/forkpty.c b/lib/forkpty.c
index cb3e28fd25..44b956bcf4 100644
--- a/lib/forkpty.c
+++ b/lib/forkpty.c
@@ -1,5 +1,5 @@
 /* Fork a child process attached to the slave of a pseudo-terminal.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/fpending.c b/lib/fpending.c
index 6408cff464..afa840b851 100644
--- a/lib/fpending.c
+++ b/lib/fpending.c
@@ -1,5 +1,5 @@
 /* fpending.c -- return the number of pending output bytes on a stream
-   Copyright (C) 2000, 2004, 2006-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 2000, 2004, 2006-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/fpending.h b/lib/fpending.h
index 43542c5b8a..5e860db681 100644
--- a/lib/fpending.h
+++ b/lib/fpending.h
@@ -1,6 +1,6 @@
 /* Declare __fpending.
 
-   Copyright (C) 2000, 2003, 2005-2006, 2009-2022 Free Software Foundation,
+   Copyright (C) 2000, 2003, 2005-2006, 2009-2023 Free Software Foundation,
    Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/fprintf.c b/lib/fprintf.c
index 27e4fae9df..85851f2cd1 100644
--- a/lib/fprintf.c
+++ b/lib/fprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to a stream.
-   Copyright (C) 2004, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2004, 2006-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/fprintftime.c b/lib/fprintftime.c
index 4e5aaffa6d..13f5660431 100644
--- a/lib/fprintftime.c
+++ b/lib/fprintftime.c
@@ -1,6 +1,6 @@
 /* Generate time strings directly to the output.
 
-   Copyright (C) 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published
diff --git a/lib/fprintftime.h b/lib/fprintftime.h
index 4d5b1399a3..9f5ae916a1 100644
--- a/lib/fprintftime.h
+++ b/lib/fprintftime.h
@@ -1,6 +1,6 @@
 /* Generate time strings directly to the output.  */
 
-/* Copyright (C) 2005, 2009-2022 Free Software Foundation, Inc.
+/* Copyright (C) 2005, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/fpucw.h b/lib/fpucw.h
index 1921836670..7dcb310eaf 100644
--- a/lib/fpucw.h
+++ b/lib/fpucw.h
@@ -1,5 +1,5 @@
 /* Manipulating the FPU control word.  -*- coding: utf-8 -*-
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2007.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/fpurge.c b/lib/fpurge.c
index 21e3b862ea..0dcb2b790f 100644
--- a/lib/fpurge.c
+++ b/lib/fpurge.c
@@ -1,5 +1,5 @@
 /* Flushing buffers of a FILE stream.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/freadable.c b/lib/freadable.c
index 1219f6e2da..eba9b1e53d 100644
--- a/lib/freadable.c
+++ b/lib/freadable.c
@@ -1,5 +1,5 @@
 /* Retrieve information about a FILE stream.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/freadable.h b/lib/freadable.h
index 874fae6c47..1a676b106f 100644
--- a/lib/freadable.h
+++ b/lib/freadable.h
@@ -1,5 +1,5 @@
 /* Retrieve information about a FILE stream.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/freadahead.c b/lib/freadahead.c
index 829d03b8bd..a1f138c7c8 100644
--- a/lib/freadahead.c
+++ b/lib/freadahead.c
@@ -1,5 +1,5 @@
 /* Retrieve information about a FILE stream.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/freadahead.h b/lib/freadahead.h
index 0bf1d497aa..91c74d525c 100644
--- a/lib/freadahead.h
+++ b/lib/freadahead.h
@@ -1,5 +1,5 @@
 /* Retrieve information about a FILE stream.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/freading.c b/lib/freading.c
index 93e96e00c2..b9377cb02c 100644
--- a/lib/freading.c
+++ b/lib/freading.c
@@ -1,5 +1,5 @@
 /* Retrieve information about a FILE stream.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/freading.h b/lib/freading.h
index 9fa8cd14d9..27b3abbc76 100644
--- a/lib/freading.h
+++ b/lib/freading.h
@@ -1,5 +1,5 @@
 /* Retrieve information about a FILE stream.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/freadptr.c b/lib/freadptr.c
index f69e95c8f0..49f203acdd 100644
--- a/lib/freadptr.c
+++ b/lib/freadptr.c
@@ -1,5 +1,5 @@
 /* Retrieve information about a FILE stream.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/freadptr.h b/lib/freadptr.h
index b9dac28471..1f0f0f94f5 100644
--- a/lib/freadptr.h
+++ b/lib/freadptr.h
@@ -1,5 +1,5 @@
 /* Retrieve information about a FILE stream.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/freadseek.c b/lib/freadseek.c
index 2e0c0a21ec..7c5751ffa6 100644
--- a/lib/freadseek.c
+++ b/lib/freadseek.c
@@ -1,5 +1,5 @@
 /* Skipping input from a FILE stream.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/freadseek.h b/lib/freadseek.h
index 1259e7c484..486342eea9 100644
--- a/lib/freadseek.h
+++ b/lib/freadseek.h
@@ -1,5 +1,5 @@
 /* Skipping input from a FILE stream.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/free.c b/lib/free.c
index 86ebe6c630..372a6b0fec 100644
--- a/lib/free.c
+++ b/lib/free.c
@@ -1,6 +1,6 @@
 /* Make free() preserve errno.
 
-   Copyright (C) 2003, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2003, 2006, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/freopen-safer.c b/lib/freopen-safer.c
index 8f4e824ef4..f41f58b94b 100644
--- a/lib/freopen-safer.c
+++ b/lib/freopen-safer.c
@@ -1,6 +1,6 @@
 /* Invoke freopen, but avoid some glitches.
 
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/freopen.c b/lib/freopen.c
index 4988e71117..646aa7c817 100644
--- a/lib/freopen.c
+++ b/lib/freopen.c
@@ -1,5 +1,5 @@
 /* Open a stream to a file.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/frexp.c b/lib/frexp.c
index 2c15733e2a..78d627b587 100644
--- a/lib/frexp.c
+++ b/lib/frexp.c
@@ -1,5 +1,5 @@
 /* Split a double into fraction and mantissa.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/frexpf.c b/lib/frexpf.c
index 5882d207e1..be68af68a4 100644
--- a/lib/frexpf.c
+++ b/lib/frexpf.c
@@ -1,5 +1,5 @@
 /* Split a float into fraction and mantissa.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/frexpl.c b/lib/frexpl.c
index 55ca0109b1..8b17094d50 100644
--- a/lib/frexpl.c
+++ b/lib/frexpl.c
@@ -1,5 +1,5 @@
 /* Split a 'long double' into fraction and mantissa.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/fseek.c b/lib/fseek.c
index e9f9314137..9764375a78 100644
--- a/lib/fseek.c
+++ b/lib/fseek.c
@@ -1,5 +1,5 @@
 /* An fseek() function that, together with fflush(), is POSIX compliant.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/fseeko.c b/lib/fseeko.c
index 2ca2db8825..89a70874eb 100644
--- a/lib/fseeko.c
+++ b/lib/fseeko.c
@@ -1,5 +1,5 @@
 /* An fseeko() function that, together with fflush(), is POSIX compliant.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/fseterr.c b/lib/fseterr.c
index 897e754e95..9b39305c6d 100644
--- a/lib/fseterr.c
+++ b/lib/fseterr.c
@@ -1,5 +1,5 @@
 /* Set the error indicator of a stream.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/fseterr.h b/lib/fseterr.h
index 7ecf871726..0e9d2060ae 100644
--- a/lib/fseterr.h
+++ b/lib/fseterr.h
@@ -1,5 +1,5 @@
 /* Set the error indicator of a stream.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/fstat.c b/lib/fstat.c
index 3928c8602b..6a235002e1 100644
--- a/lib/fstat.c
+++ b/lib/fstat.c
@@ -1,5 +1,5 @@
 /* fstat() replacement.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/fstatat.c b/lib/fstatat.c
index 6e8344964b..372965ef5f 100644
--- a/lib/fstatat.c
+++ b/lib/fstatat.c
@@ -1,6 +1,6 @@
 /* Work around an fstatat bug on Solaris 9.
 
-   Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/fstrcmp.c b/lib/fstrcmp.c
index c6ccfed959..ab4cb03ed3 100644
--- a/lib/fstrcmp.c
+++ b/lib/fstrcmp.c
@@ -1,5 +1,5 @@
 /* Functions to make fuzzy comparisons between strings
-   Copyright (C) 1988-1989, 1992-1993, 1995, 2001-2003, 2006, 2008-2022 Free
+   Copyright (C) 1988-1989, 1992-1993, 1995, 2001-2003, 2006, 2008-2023 Free
    Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/fstrcmp.h b/lib/fstrcmp.h
index 176525d3ed..81435680a3 100644
--- a/lib/fstrcmp.h
+++ b/lib/fstrcmp.h
@@ -1,5 +1,5 @@
 /* Fuzzy string comparison.
-   Copyright (C) 1995, 2000, 2002-2003, 2006, 2008-2022 Free Software
+   Copyright (C) 1995, 2000, 2002-2003, 2006, 2008-2023 Free Software
    Foundation, Inc.
 
    This file was written by Peter Miller <pmiller@agso.gov.au>
diff --git a/lib/fsusage.c b/lib/fsusage.c
index 18f790f6e7..f6f4b1c35f 100644
--- a/lib/fsusage.c
+++ b/lib/fsusage.c
@@ -1,6 +1,6 @@
 /* fsusage.c -- return space usage of mounted file systems
 
-   Copyright (C) 1991-1992, 1996, 1998-1999, 2002-2006, 2009-2022 Free Software
+   Copyright (C) 1991-1992, 1996, 1998-1999, 2002-2006, 2009-2023 Free Software
    Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/fsusage.h b/lib/fsusage.h
index 27085b7b41..9630b04e00 100644
--- a/lib/fsusage.h
+++ b/lib/fsusage.h
@@ -1,6 +1,6 @@
 /* fsusage.h -- declarations for file system space usage info
 
-   Copyright (C) 1991-1992, 1997, 2003-2006, 2009-2022 Free Software
+   Copyright (C) 1991-1992, 1997, 2003-2006, 2009-2023 Free Software
    Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/fsync.c b/lib/fsync.c
index 9b561ab96e..5131466287 100644
--- a/lib/fsync.c
+++ b/lib/fsync.c
@@ -7,7 +7,7 @@
 
    Written by Richard W.M. Jones <rjones.at.redhat.com>
 
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/ftell.c b/lib/ftell.c
index 3fbd9e9520..ce2bd5423f 100644
--- a/lib/ftell.c
+++ b/lib/ftell.c
@@ -1,5 +1,5 @@
 /* An ftell() function that works around platform bugs.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/ftello.c b/lib/ftello.c
index 989614a0d6..14184e5ef2 100644
--- a/lib/ftello.c
+++ b/lib/ftello.c
@@ -1,5 +1,5 @@
 /* An ftello() function that works around platform bugs.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/ftoastr.c b/lib/ftoastr.c
index 9105752922..8740a4d86c 100644
--- a/lib/ftoastr.c
+++ b/lib/ftoastr.c
@@ -1,6 +1,6 @@
 /* floating point to accurate string
 
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/ftoastr.h b/lib/ftoastr.h
index bac32a387e..1ce1b7a4bc 100644
--- a/lib/ftoastr.h
+++ b/lib/ftoastr.h
@@ -1,6 +1,6 @@
 /* floating point to accurate string
 
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/ftruncate.c b/lib/ftruncate.c
index 4a9279b730..b662523eb2 100644
--- a/lib/ftruncate.c
+++ b/lib/ftruncate.c
@@ -1,5 +1,5 @@
 /* ftruncate emulations for native Windows.
-   Copyright (C) 1992-2022 Free Software Foundation, Inc.
+   Copyright (C) 1992-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/fts-cycle.c b/lib/fts-cycle.c
index e21be78681..f2b9349306 100644
--- a/lib/fts-cycle.c
+++ b/lib/fts-cycle.c
@@ -1,6 +1,6 @@
 /* Detect cycles in file tree walks.
 
-   Copyright (C) 2003-2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2003-2006, 2009-2023 Free Software Foundation, Inc.
 
    Written by Jim Meyering.
 
diff --git a/lib/fts.c b/lib/fts.c
index 2627a75e43..65a96e8add 100644
--- a/lib/fts.c
+++ b/lib/fts.c
@@ -1,6 +1,6 @@
 /* Traverse a file hierarchy.
 
-   Copyright (C) 2004-2022 Free Software Foundation, Inc.
+   Copyright (C) 2004-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/fts_.h b/lib/fts_.h
index 0131a77cc9..6de50bf692 100644
--- a/lib/fts_.h
+++ b/lib/fts_.h
@@ -1,6 +1,6 @@
 /* Traverse a file hierarchy.
 
-   Copyright (C) 2004-2022 Free Software Foundation, Inc.
+   Copyright (C) 2004-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/full-read.c b/lib/full-read.c
index 7b5308771c..9a75971226 100644
--- a/lib/full-read.c
+++ b/lib/full-read.c
@@ -1,5 +1,5 @@
 /* An interface to read that retries after partial reads and interrupts.
-   Copyright (C) 2002-2003, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002-2003, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/full-read.h b/lib/full-read.h
index b30c68ad58..416378e355 100644
--- a/lib/full-read.h
+++ b/lib/full-read.h
@@ -1,6 +1,6 @@
 /* An interface to read() that reads all it is asked to read.
 
-   Copyright (C) 2002, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/full-write.c b/lib/full-write.c
index 2d593727c8..830bcf8824 100644
--- a/lib/full-write.c
+++ b/lib/full-write.c
@@ -1,6 +1,6 @@
 /* An interface to read and write that retries (if necessary) until complete.
 
-   Copyright (C) 1993-1994, 1997-2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1993-1994, 1997-2006, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/full-write.h b/lib/full-write.h
index 7e006d1f4b..1bedb018eb 100644
--- a/lib/full-write.h
+++ b/lib/full-write.h
@@ -1,6 +1,6 @@
 /* An interface to write() that writes all it is asked to write.
 
-   Copyright (C) 2002-2003, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002-2003, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/futimens.c b/lib/futimens.c
index bc3e41a943..5bb30493c7 100644
--- a/lib/futimens.c
+++ b/lib/futimens.c
@@ -1,5 +1,5 @@
 /* Set the access and modification time of an open fd.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/fwritable.c b/lib/fwritable.c
index 8003778c82..a17c99afb2 100644
--- a/lib/fwritable.c
+++ b/lib/fwritable.c
@@ -1,5 +1,5 @@
 /* Retrieve information about a FILE stream.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/fwritable.h b/lib/fwritable.h
index cf88313509..f87b112194 100644
--- a/lib/fwritable.h
+++ b/lib/fwritable.h
@@ -1,5 +1,5 @@
 /* Retrieve information about a FILE stream.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/fwriteerror.c b/lib/fwriteerror.c
index a932485481..837a6ce70f 100644
--- a/lib/fwriteerror.c
+++ b/lib/fwriteerror.c
@@ -1,5 +1,5 @@
 /* Detect write error on a stream.
-   Copyright (C) 2003-2006, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2003-2006, 2008-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2003.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/fwriteerror.h b/lib/fwriteerror.h
index c3706e17fc..ab7e53b588 100644
--- a/lib/fwriteerror.h
+++ b/lib/fwriteerror.h
@@ -1,5 +1,5 @@
 /* Detect write error on a stream.
-   Copyright (C) 2003, 2005-2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2003, 2005-2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2003.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/fwriting.c b/lib/fwriting.c
index 760b8d3111..ace8dfbf9c 100644
--- a/lib/fwriting.c
+++ b/lib/fwriting.c
@@ -1,5 +1,5 @@
 /* Retrieve information about a FILE stream.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/fwriting.h b/lib/fwriting.h
index 9c5d39a744..91e060081f 100644
--- a/lib/fwriting.h
+++ b/lib/fwriting.h
@@ -1,5 +1,5 @@
 /* Retrieve information about a FILE stream.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/gai_strerror.c b/lib/gai_strerror.c
index c7eedb2f34..3436c07aca 100644
--- a/lib/gai_strerror.c
+++ b/lib/gai_strerror.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1997, 2001-2002, 2004-2006, 2008-2022 Free Software
+/* Copyright (C) 1997, 2001-2002, 2004-2006, 2008-2023 Free Software
    Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Philip Blundell <pjb27@cam.ac.uk>, 1997.
diff --git a/lib/gc-gnulib.c b/lib/gc-gnulib.c
index c67738813f..810504c0d5 100644
--- a/lib/gc-gnulib.c
+++ b/lib/gc-gnulib.c
@@ -1,5 +1,5 @@
 /* gc-gnulib.c --- Common gnulib internal crypto interface functions
- * Copyright (C) 2002-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2002-2023 Free Software Foundation, Inc.
  *
  * This file is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Lesser General Public License as
diff --git a/lib/gc-libgcrypt.c b/lib/gc-libgcrypt.c
index de85702948..4bdf77a206 100644
--- a/lib/gc-libgcrypt.c
+++ b/lib/gc-libgcrypt.c
@@ -1,5 +1,5 @@
 /* gc-libgcrypt.c --- Crypto wrappers around Libgcrypt for GC.
- * Copyright (C) 2002-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2002-2023 Free Software Foundation, Inc.
  *
  * This file is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Lesser General Public License as
diff --git a/lib/gc-pbkdf2-sha1.c b/lib/gc-pbkdf2-sha1.c
index 300f82b581..eb67db1bd2 100644
--- a/lib/gc-pbkdf2-sha1.c
+++ b/lib/gc-pbkdf2-sha1.c
@@ -1,5 +1,5 @@
 /* gc-pbkdf2-sha1.c --- Password-Based Key Derivation Function a'la PKCS#5
-   Copyright (C) 2002-2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002-2006, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/gc-pbkdf2.c b/lib/gc-pbkdf2.c
index 09f80958c2..37e8b8655e 100644
--- a/lib/gc-pbkdf2.c
+++ b/lib/gc-pbkdf2.c
@@ -1,5 +1,5 @@
 /* gc-pbkdf2.c --- Password-Based Key Derivation Function a'la PKCS#5
-   Copyright (C) 2002-2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002-2006, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/gc.h b/lib/gc.h
index d23827c0de..1b94e36693 100644
--- a/lib/gc.h
+++ b/lib/gc.h
@@ -1,5 +1,5 @@
 /* gc.h --- Header file for implementation agnostic crypto wrapper API.
- * Copyright (C) 2002-2005, 2007-2008, 2011-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2002-2005, 2007-2008, 2011-2023 Free Software Foundation, Inc.
  *
  * This file is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Lesser General Public License as
diff --git a/lib/gcd.c b/lib/gcd.c
index 74933b9120..eab8b52260 100644
--- a/lib/gcd.c
+++ b/lib/gcd.c
@@ -1,5 +1,5 @@
 /* Arithmetic.
-   Copyright (C) 2001-2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2001.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/gcd.h b/lib/gcd.h
index 98f83e2aa0..1806102cb0 100644
--- a/lib/gcd.h
+++ b/lib/gcd.h
@@ -1,5 +1,5 @@
 /* Arithmetic.
-   Copyright (C) 2001-2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2001.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/gen-uni-tables.c b/lib/gen-uni-tables.c
index 90ff6e03ba..d783f21cb6 100644
--- a/lib/gen-uni-tables.c
+++ b/lib/gen-uni-tables.c
@@ -1,7 +1,7 @@
 /* Generate Unicode conforming character classification tables and
    line break properties tables and word break property tables and
    decomposition/composition and case mapping tables from a UnicodeData file.
-   Copyright (C) 2000-2002, 2004, 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2000-2002, 2004, 2007-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2000-2002.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/get-permissions.c b/lib/get-permissions.c
index ff79adae72..545ad23195 100644
--- a/lib/get-permissions.c
+++ b/lib/get-permissions.c
@@ -1,6 +1,6 @@
 /* Get permissions of a file.  -*- coding: utf-8 -*-
 
-   Copyright (C) 2002-2003, 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002-2003, 2005-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/get-rusage-as.c b/lib/get-rusage-as.c
index aae971074a..5033b3ae52 100644
--- a/lib/get-rusage-as.c
+++ b/lib/get-rusage-as.c
@@ -1,5 +1,5 @@
 /* Getter for RLIMIT_AS.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/get-rusage-data.c b/lib/get-rusage-data.c
index 7df3d6b464..4d5dc4092a 100644
--- a/lib/get-rusage-data.c
+++ b/lib/get-rusage-data.c
@@ -1,5 +1,5 @@
 /* Getter for RLIMIT_DATA.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/get_ppid_of.c b/lib/get_ppid_of.c
index 5e41631300..dc558d326d 100644
--- a/lib/get_ppid_of.c
+++ b/lib/get_ppid_of.c
@@ -1,5 +1,5 @@
 /* Determine the parent process of a given process.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2019.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/get_ppid_of.h b/lib/get_ppid_of.h
index b6ac060f19..f5428e46c6 100644
--- a/lib/get_ppid_of.h
+++ b/lib/get_ppid_of.h
@@ -1,5 +1,5 @@
 /* Determine the parent process of a given process.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2019.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/get_progname_of.c b/lib/get_progname_of.c
index 840bde8031..23796ee12a 100644
--- a/lib/get_progname_of.c
+++ b/lib/get_progname_of.c
@@ -1,5 +1,5 @@
 /* Determine the program name of a given process.
-   Copyright (C) 2016-2022 Free Software Foundation, Inc.
+   Copyright (C) 2016-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2019.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/get_progname_of.h b/lib/get_progname_of.h
index 0b75564df3..58b21accdb 100644
--- a/lib/get_progname_of.h
+++ b/lib/get_progname_of.h
@@ -1,5 +1,5 @@
 /* Determine the program name of a given process.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2019.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/getaddrinfo.c b/lib/getaddrinfo.c
index 0579315d30..6586ee58b5 100644
--- a/lib/getaddrinfo.c
+++ b/lib/getaddrinfo.c
@@ -1,5 +1,5 @@
 /* Get address information (partial implementation).
-   Copyright (C) 1997, 2001-2002, 2004-2022 Free Software Foundation, Inc.
+   Copyright (C) 1997, 2001-2002, 2004-2023 Free Software Foundation, Inc.
    Contributed by Simon Josefsson <simon@josefsson.org>.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/getcwd-lgpl.c b/lib/getcwd-lgpl.c
index f449ac85cd..8a5bde9947 100644
--- a/lib/getcwd-lgpl.c
+++ b/lib/getcwd-lgpl.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2011-2022 Free Software Foundation, Inc.
+/* Copyright (C) 2011-2023 Free Software Foundation, Inc.
    This file is part of gnulib.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/getcwd.c b/lib/getcwd.c
index e48529723d..a4f5c5eae3 100644
--- a/lib/getcwd.c
+++ b/lib/getcwd.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991-2022 Free Software Foundation, Inc.
+/* Copyright (C) 1991-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/getdelim.c b/lib/getdelim.c
index 9eb0483caf..79ec3dd12a 100644
--- a/lib/getdelim.c
+++ b/lib/getdelim.c
@@ -1,5 +1,5 @@
 /* getdelim.c --- Implementation of replacement getdelim function.
-   Copyright (C) 1994, 1996-1998, 2001, 2003, 2005-2022 Free Software
+   Copyright (C) 1994, 1996-1998, 2001, 2003, 2005-2023 Free Software
    Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/getdomainname.c b/lib/getdomainname.c
index 090572d7cf..3e230e2ac0 100644
--- a/lib/getdomainname.c
+++ b/lib/getdomainname.c
@@ -1,6 +1,6 @@
 /* getdomainname emulation for systems that doesn't have it.
 
-   Copyright (C) 2003, 2006, 2008, 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2003, 2006, 2008, 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/getdtablesize.c b/lib/getdtablesize.c
index 793e0f8894..ac2d1753a6 100644
--- a/lib/getdtablesize.c
+++ b/lib/getdtablesize.c
@@ -1,5 +1,5 @@
 /* getdtablesize() function: Return maximum possible file descriptor value + 1.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2008.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/getentropy.c b/lib/getentropy.c
index f4277bf77d..6ada94e4b1 100644
--- a/lib/getentropy.c
+++ b/lib/getentropy.c
@@ -1,5 +1,5 @@
 /* Fill a buffer with random bytes.
-   Copyright 2020-2022 Free Software Foundation, Inc.
+   Copyright 2020-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/getfilecon.c b/lib/getfilecon.c
index 7617530046..9506eb89cc 100644
--- a/lib/getfilecon.c
+++ b/lib/getfilecon.c
@@ -1,5 +1,5 @@
 /* wrap getfilecon, lgetfilecon, and fgetfilecon
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/getgroups.c b/lib/getgroups.c
index f7abd72667..93829d3b15 100644
--- a/lib/getgroups.c
+++ b/lib/getgroups.c
@@ -1,6 +1,6 @@
 /* provide consistent interface to getgroups for systems that don't allow N==0
 
-   Copyright (C) 1996, 1999, 2003, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 1996, 1999, 2003, 2006-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/gethostname.c b/lib/gethostname.c
index ce9bf41422..0c616c346f 100644
--- a/lib/gethostname.c
+++ b/lib/gethostname.c
@@ -1,6 +1,6 @@
 /* gethostname emulation for SysV and POSIX.1.
 
-   Copyright (C) 1992, 2003, 2006, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 1992, 2003, 2006, 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/gethrxtime.c b/lib/gethrxtime.c
index f74f8f0bf7..029260b606 100644
--- a/lib/gethrxtime.c
+++ b/lib/gethrxtime.c
@@ -1,6 +1,6 @@
 /* gethrxtime -- get high resolution real time
 
-   Copyright (C) 2005-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/gethrxtime.h b/lib/gethrxtime.h
index d2d968e776..4a6847b725 100644
--- a/lib/gethrxtime.h
+++ b/lib/gethrxtime.h
@@ -1,6 +1,6 @@
 /* gethrxtime -- get high resolution real time
 
-   Copyright (C) 2005, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/getline.c b/lib/getline.c
index 34b91177d0..85f16ab8ba 100644
--- a/lib/getline.c
+++ b/lib/getline.c
@@ -1,5 +1,5 @@
 /* getline.c --- Implementation of replacement getline function.
-   Copyright (C) 2005-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/getloadavg.c b/lib/getloadavg.c
index 1fddee97af..59b53e7998 100644
--- a/lib/getloadavg.c
+++ b/lib/getloadavg.c
@@ -1,6 +1,6 @@
 /* Get the system load averages.
 
-   Copyright (C) 1985-1989, 1991-1995, 1997, 1999-2000, 2003-2022 Free Software
+   Copyright (C) 1985-1989, 1991-1995, 1997, 1999-2000, 2003-2023 Free Software
    Foundation, Inc.
 
    NOTE: The canonical source of this file is maintained with gnulib.
diff --git a/lib/getlogin.c b/lib/getlogin.c
index 97b6ed659a..2baf826f28 100644
--- a/lib/getlogin.c
+++ b/lib/getlogin.c
@@ -1,6 +1,6 @@
 /* Provide a working getlogin for systems which lack it.
 
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/getlogin_r.c b/lib/getlogin_r.c
index 6bdf05853a..0617010686 100644
--- a/lib/getlogin_r.c
+++ b/lib/getlogin_r.c
@@ -1,6 +1,6 @@
 /* Provide a working getlogin_r for systems which lack it.
 
-   Copyright (C) 2005-2007, 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2007, 2010-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/getndelim2.c b/lib/getndelim2.c
index b0641498f5..d61ce3a494 100644
--- a/lib/getndelim2.c
+++ b/lib/getndelim2.c
@@ -1,7 +1,7 @@
 /* getndelim2 - Read a line from a stream, stopping at one of 2 delimiters,
    with bounded memory allocation.
 
-   Copyright (C) 1993, 1996-1998, 2000, 2003-2004, 2006, 2008-2022 Free
+   Copyright (C) 1993, 1996-1998, 2000, 2003-2004, 2006, 2008-2023 Free
    Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/getndelim2.h b/lib/getndelim2.h
index 7b87f6aa36..0c187f3603 100644
--- a/lib/getndelim2.h
+++ b/lib/getndelim2.h
@@ -1,7 +1,7 @@
 /* getndelim2 - Read a line from a stream, stopping at one of 2 delimiters,
    with bounded memory allocation.
 
-   Copyright (C) 2003-2004, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2003-2004, 2006, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/getnline.c b/lib/getnline.c
index 4d5b25972f..754084c235 100644
--- a/lib/getnline.c
+++ b/lib/getnline.c
@@ -1,6 +1,6 @@
 /* getnline - Read a line from a stream, with bounded memory allocation.
 
-   Copyright (C) 2003-2004, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2003-2004, 2006, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/getnline.h b/lib/getnline.h
index fefe3eb060..05db3b857d 100644
--- a/lib/getnline.h
+++ b/lib/getnline.h
@@ -1,6 +1,6 @@
 /* getnline - Read a line from a stream, with bounded memory allocation.
 
-   Copyright (C) 2003-2004, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2003-2004, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/getopt-cdefs.in.h b/lib/getopt-cdefs.in.h
index b6dd913caf..e76c78cb21 100644
--- a/lib/getopt-cdefs.in.h
+++ b/lib/getopt-cdefs.in.h
@@ -1,5 +1,5 @@
 /* getopt-on-non-glibc compatibility macros.
-   Copyright (C) 1989-2022 Free Software Foundation, Inc.
+   Copyright (C) 1989-2023 Free Software Foundation, Inc.
    This file is part of gnulib.
    Unlike most of the getopt implementation, it is NOT shared
    with the GNU C Library.
diff --git a/lib/getopt-core.h b/lib/getopt-core.h
index 1c40ecc833..c5dd49363f 100644
--- a/lib/getopt-core.h
+++ b/lib/getopt-core.h
@@ -1,5 +1,5 @@
 /* Declarations for getopt (basic, portable features only).
-   Copyright (C) 1989-2022 Free Software Foundation, Inc.
+   Copyright (C) 1989-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library and is also part of gnulib.
    Patches to this file should be submitted to both projects.
 
diff --git a/lib/getopt-ext.h b/lib/getopt-ext.h
index d661fcc554..d37c29328b 100644
--- a/lib/getopt-ext.h
+++ b/lib/getopt-ext.h
@@ -1,5 +1,5 @@
 /* Declarations for getopt (GNU extensions).
-   Copyright (C) 1989-2022 Free Software Foundation, Inc.
+   Copyright (C) 1989-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library and is also part of gnulib.
    Patches to this file should be submitted to both projects.
 
diff --git a/lib/getopt-pfx-core.h b/lib/getopt-pfx-core.h
index 3eead0e04e..3a2fde5ad4 100644
--- a/lib/getopt-pfx-core.h
+++ b/lib/getopt-pfx-core.h
@@ -1,5 +1,5 @@
 /* getopt (basic, portable features) gnulib wrapper header.
-   Copyright (C) 1989-2022 Free Software Foundation, Inc.
+   Copyright (C) 1989-2023 Free Software Foundation, Inc.
    This file is part of gnulib.
    Unlike most of the getopt implementation, it is NOT shared
    with the GNU C Library.
diff --git a/lib/getopt-pfx-ext.h b/lib/getopt-pfx-ext.h
index 85a6cb5db3..8578d72530 100644
--- a/lib/getopt-pfx-ext.h
+++ b/lib/getopt-pfx-ext.h
@@ -1,5 +1,5 @@
 /* getopt (GNU extensions) gnulib wrapper header.
-   Copyright (C) 1989-2022 Free Software Foundation, Inc.
+   Copyright (C) 1989-2023 Free Software Foundation, Inc.
    This file is part of gnulib.
    Unlike most of the getopt implementation, it is NOT shared
    with the GNU C Library.
diff --git a/lib/getopt.c b/lib/getopt.c
index 128dc7fcf5..1e2441c4af 100644
--- a/lib/getopt.c
+++ b/lib/getopt.c
@@ -1,5 +1,5 @@
 /* Getopt for GNU.
-   Copyright (C) 1987-2022 Free Software Foundation, Inc.
+   Copyright (C) 1987-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library and is also part of gnulib.
    Patches to this file should be submitted to both projects.
 
diff --git a/lib/getopt.in.h b/lib/getopt.in.h
index 9bc50ee2be..0867d365f4 100644
--- a/lib/getopt.in.h
+++ b/lib/getopt.in.h
@@ -1,5 +1,5 @@
 /* Declarations for getopt.
-   Copyright (C) 1989-2022 Free Software Foundation, Inc.
+   Copyright (C) 1989-2023 Free Software Foundation, Inc.
    This file is part of gnulib.
    Unlike most of the getopt implementation, it is NOT shared
    with the GNU C Library, which supplies a different version of
diff --git a/lib/getopt1.c b/lib/getopt1.c
index 990eee1b64..49323aa8ed 100644
--- a/lib/getopt1.c
+++ b/lib/getopt1.c
@@ -1,5 +1,5 @@
 /* getopt_long and getopt_long_only entry points for GNU getopt.
-   Copyright (C) 1987-2022 Free Software Foundation, Inc.
+   Copyright (C) 1987-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library and is also part of gnulib.
    Patches to this file should be submitted to both projects.
 
diff --git a/lib/getopt_int.h b/lib/getopt_int.h
index ccdbb973a5..4d9e24beeb 100644
--- a/lib/getopt_int.h
+++ b/lib/getopt_int.h
@@ -1,5 +1,5 @@
 /* Internal declarations for getopt.
-   Copyright (C) 1989-2022 Free Software Foundation, Inc.
+   Copyright (C) 1989-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library and is also part of gnulib.
    Patches to this file should be submitted to both projects.
 
diff --git a/lib/getpagesize.c b/lib/getpagesize.c
index a19669f60e..08bb33f788 100644
--- a/lib/getpagesize.c
+++ b/lib/getpagesize.c
@@ -1,6 +1,6 @@
 /* getpagesize emulation for systems where it cannot be done in a C macro.
 
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/getpass.c b/lib/getpass.c
index bf2d198b07..576ab0a260 100644
--- a/lib/getpass.c
+++ b/lib/getpass.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1992-2001, 2003-2007, 2009-2022 Free Software Foundation, Inc.
+/* Copyright (C) 1992-2001, 2003-2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is part of the GNU C Library.
 
diff --git a/lib/getpass.h b/lib/getpass.h
index 8c05e8799b..f0ddef7344 100644
--- a/lib/getpass.h
+++ b/lib/getpass.h
@@ -1,6 +1,6 @@
 /* Read a password from /dec/tty.
 
-   Copyright (C) 2004-2022 Free Software Foundation, Inc.
+   Copyright (C) 2004-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/getpeername.c b/lib/getpeername.c
index ac4926f38b..70ffc0b615 100644
--- a/lib/getpeername.c
+++ b/lib/getpeername.c
@@ -1,6 +1,6 @@
 /* getpeername.c --- wrappers for Windows getpeername function
 
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/getprogname.c b/lib/getprogname.c
index 62a480046e..32c96043b0 100644
--- a/lib/getprogname.c
+++ b/lib/getprogname.c
@@ -1,5 +1,5 @@
 /* Program name management.
-   Copyright (C) 2016-2022 Free Software Foundation, Inc.
+   Copyright (C) 2016-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as published by
diff --git a/lib/getprogname.h b/lib/getprogname.h
index 9a35e584ee..4b9126f9d7 100644
--- a/lib/getprogname.h
+++ b/lib/getprogname.h
@@ -1,5 +1,5 @@
 /* Program name management.
-   Copyright (C) 2016-2022 Free Software Foundation, Inc.
+   Copyright (C) 2016-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as published by
diff --git a/lib/getrandom.c b/lib/getrandom.c
index c05a48167e..19bb3429ba 100644
--- a/lib/getrandom.c
+++ b/lib/getrandom.c
@@ -1,6 +1,6 @@
 /* Obtain a series of random bytes.
 
-   Copyright 2020-2022 Free Software Foundation, Inc.
+   Copyright 2020-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/getrusage.c b/lib/getrusage.c
index 34263d3f83..f39bdca761 100644
--- a/lib/getrusage.c
+++ b/lib/getrusage.c
@@ -1,6 +1,6 @@
 /* getrusage replacement for systems which lack it.
 
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/getsockname.c b/lib/getsockname.c
index 3ab3a75457..263b912206 100644
--- a/lib/getsockname.c
+++ b/lib/getsockname.c
@@ -1,6 +1,6 @@
 /* getsockname.c --- wrappers for Windows getsockname function
 
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/getsockopt.c b/lib/getsockopt.c
index 9c87afadb0..565c38ef07 100644
--- a/lib/getsockopt.c
+++ b/lib/getsockopt.c
@@ -1,6 +1,6 @@
 /* getsockopt.c --- wrappers for Windows getsockopt function
 
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/getsubopt.c b/lib/getsubopt.c
index 630fb26b8f..6b90bf5f7e 100644
--- a/lib/getsubopt.c
+++ b/lib/getsubopt.c
@@ -1,5 +1,5 @@
 /* Parse comma separated list into words.
-   Copyright (C) 1996-1997, 1999, 2004, 2007, 2009-2022 Free Software
+   Copyright (C) 1996-1997, 1999, 2004, 2007, 2009-2023 Free Software
    Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
diff --git a/lib/gettext.h b/lib/gettext.h
index b3577a043f..d0462c47e1 100644
--- a/lib/gettext.h
+++ b/lib/gettext.h
@@ -1,5 +1,5 @@
 /* Convenience header for conditional use of GNU <libintl.h>.
-   Copyright (C) 1995-1998, 2000-2002, 2004-2006, 2009-2022 Free Software
+   Copyright (C) 1995-1998, 2000-2002, 2004-2006, 2009-2023 Free Software
    Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/gettime-res.c b/lib/gettime-res.c
index 0a14cd360f..a5bc492c7c 100644
--- a/lib/gettime-res.c
+++ b/lib/gettime-res.c
@@ -1,6 +1,6 @@
 /* Get the system clock resolution.
 
-   Copyright 2021-2022 Free Software Foundation, Inc.
+   Copyright 2021-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/gettime.c b/lib/gettime.c
index 541af18bbf..f86cc4efbf 100644
--- a/lib/gettime.c
+++ b/lib/gettime.c
@@ -1,6 +1,6 @@
 /* gettime -- get the system clock
 
-   Copyright (C) 2002, 2004-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2004-2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/gettimeofday.c b/lib/gettimeofday.c
index 36c7920afe..d896ec132b 100644
--- a/lib/gettimeofday.c
+++ b/lib/gettimeofday.c
@@ -1,6 +1,6 @@
 /* Provide gettimeofday for systems that don't have it or for which it's 
broken.
 
-   Copyright (C) 2001-2003, 2005-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2003, 2005-2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/getugroups.c b/lib/getugroups.c
index a11dc30816..0145165efb 100644
--- a/lib/getugroups.c
+++ b/lib/getugroups.c
@@ -1,6 +1,6 @@
 /* getugroups.c -- return a list of the groups a user is in
 
-   Copyright (C) 1990-1991, 1998-2000, 2003-2022 Free Software Foundation, Inc.
+   Copyright (C) 1990-1991, 1998-2000, 2003-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/getugroups.h b/lib/getugroups.h
index fb7fa0ce04..141af9dfdd 100644
--- a/lib/getugroups.h
+++ b/lib/getugroups.h
@@ -1,5 +1,5 @@
 /* Get a list of group IDs associated with a specified user ID.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/getumask.c b/lib/getumask.c
index 066d6cd361..203d6dc869 100644
--- a/lib/getumask.c
+++ b/lib/getumask.c
@@ -1,5 +1,5 @@
 /* Retrieve the umask of the process (multithread-safe).
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/getusershell.c b/lib/getusershell.c
index 5335d142b9..1d6d9ce448 100644
--- a/lib/getusershell.c
+++ b/lib/getusershell.c
@@ -1,6 +1,6 @@
 /* getusershell.c -- Return names of valid user shells.
 
-   Copyright (C) 1991, 1997, 2000-2001, 2003-2006, 2008-2022 Free Software
+   Copyright (C) 1991, 1997, 2000-2001, 2003-2006, 2008-2023 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/gl_anyavltree_list1.h b/lib/gl_anyavltree_list1.h
index 0c1224a30d..c929ebe28a 100644
--- a/lib/gl_anyavltree_list1.h
+++ b/lib/gl_anyavltree_list1.h
@@ -1,5 +1,5 @@
 /* Sequential list data type implemented by a binary tree.
-   Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/gl_anyavltree_list2.h b/lib/gl_anyavltree_list2.h
index c257e7f421..7e608e5b3f 100644
--- a/lib/gl_anyavltree_list2.h
+++ b/lib/gl_anyavltree_list2.h
@@ -1,5 +1,5 @@
 /* Sequential list data type implemented by a binary tree.
-   Copyright (C) 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/gl_anyhash1.h b/lib/gl_anyhash1.h
index c6c046eea0..0e28fddcd2 100644
--- a/lib/gl_anyhash1.h
+++ b/lib/gl_anyhash1.h
@@ -1,5 +1,5 @@
 /* Hash table for sequential list, set, and map data type.
-   Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/gl_anyhash2.h b/lib/gl_anyhash2.h
index 5ceba987fc..c19115126d 100644
--- a/lib/gl_anyhash2.h
+++ b/lib/gl_anyhash2.h
@@ -1,5 +1,5 @@
 /* Hash table for sequential list, set, and map data type.
-   Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/gl_anyhash_primes.h b/lib/gl_anyhash_primes.h
index b00a6062e1..7be9c3c605 100644
--- a/lib/gl_anyhash_primes.h
+++ b/lib/gl_anyhash_primes.h
@@ -1,5 +1,5 @@
 /* Table of primes, for use by hash tables.
-   Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/gl_anylinked_list1.h b/lib/gl_anylinked_list1.h
index 709106a3f1..51dda5339f 100644
--- a/lib/gl_anylinked_list1.h
+++ b/lib/gl_anylinked_list1.h
@@ -1,5 +1,5 @@
 /* Sequential list data type implemented by a linked list.
-   Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/gl_anylinked_list2.h b/lib/gl_anylinked_list2.h
index af83f0d38a..e8219ef787 100644
--- a/lib/gl_anylinked_list2.h
+++ b/lib/gl_anylinked_list2.h
@@ -1,5 +1,5 @@
 /* Sequential list data type implemented by a linked list.
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/gl_anyrbtree_list1.h b/lib/gl_anyrbtree_list1.h
index 750fd36427..ba42ab8d8b 100644
--- a/lib/gl_anyrbtree_list1.h
+++ b/lib/gl_anyrbtree_list1.h
@@ -1,5 +1,5 @@
 /* Sequential list data type implemented by a binary tree.
-   Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/gl_anyrbtree_list2.h b/lib/gl_anyrbtree_list2.h
index 95d193cd52..cd4205a8bd 100644
--- a/lib/gl_anyrbtree_list2.h
+++ b/lib/gl_anyrbtree_list2.h
@@ -1,5 +1,5 @@
 /* Sequential list data type implemented by a binary tree.
-   Copyright (C) 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/gl_anytree_list1.h b/lib/gl_anytree_list1.h
index 1f05430d8b..47076fd414 100644
--- a/lib/gl_anytree_list1.h
+++ b/lib/gl_anytree_list1.h
@@ -1,5 +1,5 @@
 /* Sequential list data type implemented by a binary tree.
-   Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/gl_anytree_list2.h b/lib/gl_anytree_list2.h
index 165b715382..5105760e80 100644
--- a/lib/gl_anytree_list2.h
+++ b/lib/gl_anytree_list2.h
@@ -1,5 +1,5 @@
 /* Sequential list data type implemented by a binary tree.
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/gl_anytree_omap.h b/lib/gl_anytree_omap.h
index abc1541b33..ffcf39cfb1 100644
--- a/lib/gl_anytree_omap.h
+++ b/lib/gl_anytree_omap.h
@@ -1,5 +1,5 @@
 /* Ordered map data type implemented by a binary tree.
-   Copyright (C) 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2018.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/gl_anytree_oset.h b/lib/gl_anytree_oset.h
index 19dcff7501..b762a9c34f 100644
--- a/lib/gl_anytree_oset.h
+++ b/lib/gl_anytree_oset.h
@@ -1,5 +1,5 @@
 /* Ordered set data type implemented by a binary tree.
-   Copyright (C) 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/gl_anytreehash_list1.h b/lib/gl_anytreehash_list1.h
index 90a116f581..9aa9493e2a 100644
--- a/lib/gl_anytreehash_list1.h
+++ b/lib/gl_anytreehash_list1.h
@@ -1,5 +1,5 @@
 /* Sequential list data type implemented by a hash table with a binary tree.
-   Copyright (C) 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/gl_anytreehash_list2.h b/lib/gl_anytreehash_list2.h
index 97e5425063..4c830daae8 100644
--- a/lib/gl_anytreehash_list2.h
+++ b/lib/gl_anytreehash_list2.h
@@ -1,5 +1,5 @@
 /* Sequential list data type implemented by a hash table with a binary tree.
-   Copyright (C) 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/gl_array_list.c b/lib/gl_array_list.c
index 3018632658..ca5527fe97 100644
--- a/lib/gl_array_list.c
+++ b/lib/gl_array_list.c
@@ -1,5 +1,5 @@
 /* Sequential list data type implemented by an array.
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/gl_array_list.h b/lib/gl_array_list.h
index 3d5b9f94d5..1e9afd4854 100644
--- a/lib/gl_array_list.h
+++ b/lib/gl_array_list.h
@@ -1,5 +1,5 @@
 /* Sequential list data type implemented by an array.
-   Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/gl_array_map.c b/lib/gl_array_map.c
index 31aa96d42d..46937c61fc 100644
--- a/lib/gl_array_map.c
+++ b/lib/gl_array_map.c
@@ -1,5 +1,5 @@
 /* Map data type implemented by an array.
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2018.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/gl_array_map.h b/lib/gl_array_map.h
index 45e5b08404..e99457ee9c 100644
--- a/lib/gl_array_map.h
+++ b/lib/gl_array_map.h
@@ -1,5 +1,5 @@
 /* Map data type implemented by an array.
-   Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2018.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/gl_array_omap.c b/lib/gl_array_omap.c
index 7301a537d8..f3e94ecc01 100644
--- a/lib/gl_array_omap.c
+++ b/lib/gl_array_omap.c
@@ -1,5 +1,5 @@
 /* Ordered map data type implemented by an array.
-   Copyright (C) 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2018.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/gl_array_omap.h b/lib/gl_array_omap.h
index 07ce7fb282..716d0bee85 100644
--- a/lib/gl_array_omap.h
+++ b/lib/gl_array_omap.h
@@ -1,5 +1,5 @@
 /* Ordered map data type implemented by an array.
-   Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2018.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/gl_array_oset.c b/lib/gl_array_oset.c
index 9748fd262c..e77bc32a89 100644
--- a/lib/gl_array_oset.c
+++ b/lib/gl_array_oset.c
@@ -1,5 +1,5 @@
 /* Ordered set data type implemented by an array.
-   Copyright (C) 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/gl_array_oset.h b/lib/gl_array_oset.h
index 469aae4802..1ace10ee2c 100644
--- a/lib/gl_array_oset.h
+++ b/lib/gl_array_oset.h
@@ -1,5 +1,5 @@
 /* Ordered set data type implemented by an array.
-   Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/gl_array_set.c b/lib/gl_array_set.c
index ffe9f8f45e..7f2a3881c1 100644
--- a/lib/gl_array_set.c
+++ b/lib/gl_array_set.c
@@ -1,5 +1,5 @@
 /* Set data type implemented by an array.
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2018.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/gl_array_set.h b/lib/gl_array_set.h
index 3ed24dcf93..0da42e0007 100644
--- a/lib/gl_array_set.h
+++ b/lib/gl_array_set.h
@@ -1,5 +1,5 @@
 /* Set data type implemented by an array.
-   Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2018.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/gl_avltree_list.c b/lib/gl_avltree_list.c
index 828286e991..4b813ec372 100644
--- a/lib/gl_avltree_list.c
+++ b/lib/gl_avltree_list.c
@@ -1,5 +1,5 @@
 /* Sequential list data type implemented by a binary tree.
-   Copyright (C) 2006, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2008-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/gl_avltree_list.h b/lib/gl_avltree_list.h
index e3e04e9cf4..b57ca581c6 100644
--- a/lib/gl_avltree_list.h
+++ b/lib/gl_avltree_list.h
@@ -1,5 +1,5 @@
 /* Sequential list data type implemented by a binary tree.
-   Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/gl_avltree_omap.c b/lib/gl_avltree_omap.c
index d0e0c71dae..37a954cfe7 100644
--- a/lib/gl_avltree_omap.c
+++ b/lib/gl_avltree_omap.c
@@ -1,5 +1,5 @@
 /* Ordered map data type implemented by a binary tree.
-   Copyright (C) 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2018.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/gl_avltree_omap.h b/lib/gl_avltree_omap.h
index 1778fbec24..6cbf8be804 100644
--- a/lib/gl_avltree_omap.h
+++ b/lib/gl_avltree_omap.h
@@ -1,5 +1,5 @@
 /* Ordered map data type implemented by a binary tree.
-   Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2018.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/gl_avltree_ordered.h b/lib/gl_avltree_ordered.h
index e44d9eecd7..cc53b62b7d 100644
--- a/lib/gl_avltree_ordered.h
+++ b/lib/gl_avltree_ordered.h
@@ -1,5 +1,5 @@
 /* Ordered {set,map} data type implemented by a binary tree.
-   Copyright (C) 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/gl_avltree_oset.c b/lib/gl_avltree_oset.c
index 54f5a512cc..5710adcb86 100644
--- a/lib/gl_avltree_oset.c
+++ b/lib/gl_avltree_oset.c
@@ -1,5 +1,5 @@
 /* Ordered set data type implemented by a binary tree.
-   Copyright (C) 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/gl_avltree_oset.h b/lib/gl_avltree_oset.h
index 5164616733..b63aebe773 100644
--- a/lib/gl_avltree_oset.h
+++ b/lib/gl_avltree_oset.h
@@ -1,5 +1,5 @@
 /* Ordered set data type implemented by a binary tree.
-   Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/gl_avltreehash_list.c b/lib/gl_avltreehash_list.c
index a570acbec8..269e518506 100644
--- a/lib/gl_avltreehash_list.c
+++ b/lib/gl_avltreehash_list.c
@@ -1,5 +1,5 @@
 /* Sequential list data type implemented by a hash table with a binary tree.
-   Copyright (C) 2006, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2008-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/gl_avltreehash_list.h b/lib/gl_avltreehash_list.h
index 47d8d6226d..41d2965f57 100644
--- a/lib/gl_avltreehash_list.h
+++ b/lib/gl_avltreehash_list.h
@@ -1,5 +1,5 @@
 /* Sequential list data type implemented by a hash table with a binary tree.
-   Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/gl_carray_list.c b/lib/gl_carray_list.c
index dc2891c12a..0f9d33a785 100644
--- a/lib/gl_carray_list.c
+++ b/lib/gl_carray_list.c
@@ -1,5 +1,5 @@
 /* Sequential list data type implemented by a circular array.
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/gl_carray_list.h b/lib/gl_carray_list.h
index d0f70e2036..557b7d6598 100644
--- a/lib/gl_carray_list.h
+++ b/lib/gl_carray_list.h
@@ -1,5 +1,5 @@
 /* Sequential list data type implemented by a circular array.
-   Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/gl_hash_map.c b/lib/gl_hash_map.c
index 6042b60eeb..a79815ab62 100644
--- a/lib/gl_hash_map.c
+++ b/lib/gl_hash_map.c
@@ -1,5 +1,5 @@
 /* Map data type implemented by a hash table.
-   Copyright (C) 2006, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2008-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2018.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/gl_hash_map.h b/lib/gl_hash_map.h
index 669277606d..edcd9a245b 100644
--- a/lib/gl_hash_map.h
+++ b/lib/gl_hash_map.h
@@ -1,5 +1,5 @@
 /* Map data type implemented by a hash table.
-   Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2018.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/gl_hash_set.c b/lib/gl_hash_set.c
index 75b2e99730..025d1e172f 100644
--- a/lib/gl_hash_set.c
+++ b/lib/gl_hash_set.c
@@ -1,5 +1,5 @@
 /* Set data type implemented by a hash table.
-   Copyright (C) 2006, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2008-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2018.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/gl_hash_set.h b/lib/gl_hash_set.h
index ea61eb46e2..507820dfb2 100644
--- a/lib/gl_hash_set.h
+++ b/lib/gl_hash_set.h
@@ -1,5 +1,5 @@
 /* Set data type implemented by a hash table.
-   Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2018.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/gl_linked_list.c b/lib/gl_linked_list.c
index c78dba6cfe..a5ca84a766 100644
--- a/lib/gl_linked_list.c
+++ b/lib/gl_linked_list.c
@@ -1,5 +1,5 @@
 /* Sequential list data type implemented by a linked list.
-   Copyright (C) 2006, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2008-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/gl_linked_list.h b/lib/gl_linked_list.h
index 2d0333590b..76c0bc7995 100644
--- a/lib/gl_linked_list.h
+++ b/lib/gl_linked_list.h
@@ -1,5 +1,5 @@
 /* Sequential list data type implemented by a linked list.
-   Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/gl_linkedhash_list.c b/lib/gl_linkedhash_list.c
index dbf43de78c..dd755b1034 100644
--- a/lib/gl_linkedhash_list.c
+++ b/lib/gl_linkedhash_list.c
@@ -1,5 +1,5 @@
 /* Sequential list data type implemented by a hash table with a linked list.
-   Copyright (C) 2006, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2008-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/gl_linkedhash_list.h b/lib/gl_linkedhash_list.h
index 77ef8f46a3..589b7675ed 100644
--- a/lib/gl_linkedhash_list.h
+++ b/lib/gl_linkedhash_list.h
@@ -1,5 +1,5 @@
 /* Sequential list data type implemented by a hash table with a linked list.
-   Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/gl_linkedhash_map.c b/lib/gl_linkedhash_map.c
index ec9430e64a..782afa5f2f 100644
--- a/lib/gl_linkedhash_map.c
+++ b/lib/gl_linkedhash_map.c
@@ -1,5 +1,5 @@
 /* Map data type implemented by a hash table with a linked list.
-   Copyright (C) 2006, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2008-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2018.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/gl_linkedhash_map.h b/lib/gl_linkedhash_map.h
index f9603d8c79..23c9bfabc4 100644
--- a/lib/gl_linkedhash_map.h
+++ b/lib/gl_linkedhash_map.h
@@ -1,5 +1,5 @@
 /* Map data type implemented by a hash table with a linked list.
-   Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2018.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/gl_linkedhash_set.c b/lib/gl_linkedhash_set.c
index 1d402604f0..b7d2a3d079 100644
--- a/lib/gl_linkedhash_set.c
+++ b/lib/gl_linkedhash_set.c
@@ -1,5 +1,5 @@
 /* Set data type implemented by a hash table with a linked list.
-   Copyright (C) 2006, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2008-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2018.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/gl_linkedhash_set.h b/lib/gl_linkedhash_set.h
index e1af8c5d7d..eb3793d9cb 100644
--- a/lib/gl_linkedhash_set.h
+++ b/lib/gl_linkedhash_set.h
@@ -1,5 +1,5 @@
 /* Set data type implemented by a hash table with a linked list.
-   Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2018.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/gl_list.c b/lib/gl_list.c
index cccb39cced..6fd757c787 100644
--- a/lib/gl_list.c
+++ b/lib/gl_list.c
@@ -1,6 +1,6 @@
 /* Abstract sequential list data type.
 
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/gl_list.h b/lib/gl_list.h
index 1fd12de4f4..9bb3d38206 100644
--- a/lib/gl_list.h
+++ b/lib/gl_list.h
@@ -1,5 +1,5 @@
 /* Abstract sequential list data type.  -*- coding: utf-8 -*-
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/gl_list.hh b/lib/gl_list.hh
index 62805bf049..4cf8b1f944 100644
--- a/lib/gl_list.hh
+++ b/lib/gl_list.hh
@@ -1,5 +1,5 @@
 /* Abstract sequential list data type as a C++ class.
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/gl_map.c b/lib/gl_map.c
index 5604354177..75e06747d9 100644
--- a/lib/gl_map.c
+++ b/lib/gl_map.c
@@ -1,6 +1,6 @@
 /* Abstract map data type.
 
-   Copyright (C) 2018-2022 Free Software Foundation, Inc.
+   Copyright (C) 2018-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published
diff --git a/lib/gl_map.h b/lib/gl_map.h
index e6563cd4fa..f646ce8f51 100644
--- a/lib/gl_map.h
+++ b/lib/gl_map.h
@@ -1,5 +1,5 @@
 /* Abstract map data type.
-   Copyright (C) 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2018.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/gl_map.hh b/lib/gl_map.hh
index 02294cf03f..076a27e4c0 100644
--- a/lib/gl_map.hh
+++ b/lib/gl_map.hh
@@ -1,5 +1,5 @@
 /* Abstract map data type as a C++ class.
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2018.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/gl_omap.c b/lib/gl_omap.c
index 8da518493c..964acd46a9 100644
--- a/lib/gl_omap.c
+++ b/lib/gl_omap.c
@@ -1,6 +1,6 @@
 /* Abstract ordered map data type.
 
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/gl_omap.h b/lib/gl_omap.h
index 67f15c9046..180c5df448 100644
--- a/lib/gl_omap.h
+++ b/lib/gl_omap.h
@@ -1,5 +1,5 @@
 /* Abstract ordered map data type.
-   Copyright (C) 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2018.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/gl_omap.hh b/lib/gl_omap.hh
index d9b1fc960e..a3c73ab90d 100644
--- a/lib/gl_omap.hh
+++ b/lib/gl_omap.hh
@@ -1,5 +1,5 @@
 /* Abstract ordered map data type as a C++ class.
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2018.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/gl_openssl.h b/lib/gl_openssl.h
index 4c42ac8689..f63c386ecb 100644
--- a/lib/gl_openssl.h
+++ b/lib/gl_openssl.h
@@ -1,6 +1,6 @@
 /* Wrap openssl crypto hash routines in gnulib interface.  -*- coding: utf-8 
-*-
 
-   Copyright (C) 2013-2022 Free Software Foundation, Inc.
+   Copyright (C) 2013-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/gl_oset.c b/lib/gl_oset.c
index a38a3a32dd..a06fabbcd9 100644
--- a/lib/gl_oset.c
+++ b/lib/gl_oset.c
@@ -1,6 +1,6 @@
 /* Abstract ordered set data type.
 
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/gl_oset.h b/lib/gl_oset.h
index 0e360bdb2b..890056484a 100644
--- a/lib/gl_oset.h
+++ b/lib/gl_oset.h
@@ -1,5 +1,5 @@
 /* Abstract ordered set data type.
-   Copyright (C) 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/gl_oset.hh b/lib/gl_oset.hh
index d0844638b7..5f5a8775f7 100644
--- a/lib/gl_oset.hh
+++ b/lib/gl_oset.hh
@@ -1,5 +1,5 @@
 /* Abstract ordered set data type as a C++ class.
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/gl_rbtree_list.c b/lib/gl_rbtree_list.c
index 660783ecc1..d395d68425 100644
--- a/lib/gl_rbtree_list.c
+++ b/lib/gl_rbtree_list.c
@@ -1,5 +1,5 @@
 /* Sequential list data type implemented by a binary tree.
-   Copyright (C) 2006, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2008-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/gl_rbtree_list.h b/lib/gl_rbtree_list.h
index 4ff4f1e9ad..4896644c2c 100644
--- a/lib/gl_rbtree_list.h
+++ b/lib/gl_rbtree_list.h
@@ -1,5 +1,5 @@
 /* Sequential list data type implemented by a binary tree.
-   Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/gl_rbtree_omap.c b/lib/gl_rbtree_omap.c
index 4a532d8ffd..6d6899d548 100644
--- a/lib/gl_rbtree_omap.c
+++ b/lib/gl_rbtree_omap.c
@@ -1,5 +1,5 @@
 /* Ordered map data type implemented by a binary tree.
-   Copyright (C) 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2018.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/gl_rbtree_omap.h b/lib/gl_rbtree_omap.h
index 91c94bd692..60f9fa098b 100644
--- a/lib/gl_rbtree_omap.h
+++ b/lib/gl_rbtree_omap.h
@@ -1,5 +1,5 @@
 /* Ordered map data type implemented by a binary tree.
-   Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2018.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/gl_rbtree_ordered.h b/lib/gl_rbtree_ordered.h
index 46b6a21605..a8ecbbc5c0 100644
--- a/lib/gl_rbtree_ordered.h
+++ b/lib/gl_rbtree_ordered.h
@@ -1,5 +1,5 @@
 /* Ordered {set,map} data type implemented by a binary tree.
-   Copyright (C) 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/gl_rbtree_oset.c b/lib/gl_rbtree_oset.c
index c7641e995e..e5f01b2202 100644
--- a/lib/gl_rbtree_oset.c
+++ b/lib/gl_rbtree_oset.c
@@ -1,5 +1,5 @@
 /* Ordered set data type implemented by a binary tree.
-   Copyright (C) 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/gl_rbtree_oset.h b/lib/gl_rbtree_oset.h
index 8383d878a0..82b301d372 100644
--- a/lib/gl_rbtree_oset.h
+++ b/lib/gl_rbtree_oset.h
@@ -1,5 +1,5 @@
 /* Ordered set data type implemented by a binary tree.
-   Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/gl_rbtreehash_list.c b/lib/gl_rbtreehash_list.c
index a6af517ac9..7a706c7e6c 100644
--- a/lib/gl_rbtreehash_list.c
+++ b/lib/gl_rbtreehash_list.c
@@ -1,5 +1,5 @@
 /* Sequential list data type implemented by a hash table with a binary tree.
-   Copyright (C) 2006, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2008-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/gl_rbtreehash_list.h b/lib/gl_rbtreehash_list.h
index a7ddb06336..e0aefb9f13 100644
--- a/lib/gl_rbtreehash_list.h
+++ b/lib/gl_rbtreehash_list.h
@@ -1,5 +1,5 @@
 /* Sequential list data type implemented by a hash table with a binary tree.
-   Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/gl_set.c b/lib/gl_set.c
index d8e53d64a2..233da73a1f 100644
--- a/lib/gl_set.c
+++ b/lib/gl_set.c
@@ -1,6 +1,6 @@
 /* Abstract set data type.
 
-   Copyright (C) 2018-2022 Free Software Foundation, Inc.
+   Copyright (C) 2018-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published
diff --git a/lib/gl_set.h b/lib/gl_set.h
index c98463a574..b600ad572e 100644
--- a/lib/gl_set.h
+++ b/lib/gl_set.h
@@ -1,5 +1,5 @@
 /* Abstract set data type.
-   Copyright (C) 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2018.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/gl_set.hh b/lib/gl_set.hh
index 6c718ecc41..3afd783ffd 100644
--- a/lib/gl_set.hh
+++ b/lib/gl_set.hh
@@ -1,5 +1,5 @@
 /* Abstract set data type as a C++ class.
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2018.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/gl_sublist.c b/lib/gl_sublist.c
index 154fb6dbf4..8e6a4db9cb 100644
--- a/lib/gl_sublist.c
+++ b/lib/gl_sublist.c
@@ -1,5 +1,5 @@
 /* Sequential list data type backed by another list.
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/gl_sublist.h b/lib/gl_sublist.h
index 74d38c5eb2..8ac26b85bc 100644
--- a/lib/gl_sublist.h
+++ b/lib/gl_sublist.h
@@ -1,5 +1,5 @@
 /* Sequential list data type backed by another list.
-   Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/gl_xlist.c b/lib/gl_xlist.c
index 204698e73a..5ca5a78ba1 100644
--- a/lib/gl_xlist.c
+++ b/lib/gl_xlist.c
@@ -1,6 +1,6 @@
 /* Abstract sequential list data type, with out-of-memory checking.
 
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published
diff --git a/lib/gl_xlist.h b/lib/gl_xlist.h
index abef383881..f5fd929bbe 100644
--- a/lib/gl_xlist.h
+++ b/lib/gl_xlist.h
@@ -1,5 +1,5 @@
 /* Abstract sequential list data type, with out-of-memory checking.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/gl_xmap.c b/lib/gl_xmap.c
index 3a9e886a7a..0787f6f2c9 100644
--- a/lib/gl_xmap.c
+++ b/lib/gl_xmap.c
@@ -1,6 +1,6 @@
 /* Abstract map data type, with out-of-memory checking.
 
-   Copyright (C) 2018-2022 Free Software Foundation, Inc.
+   Copyright (C) 2018-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published
diff --git a/lib/gl_xmap.h b/lib/gl_xmap.h
index 85dc153986..cfb2b9c3b9 100644
--- a/lib/gl_xmap.h
+++ b/lib/gl_xmap.h
@@ -1,5 +1,5 @@
 /* Abstract map data type, with out-of-memory checking.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2018.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/gl_xomap.c b/lib/gl_xomap.c
index cfac1e0b52..fe7c73b210 100644
--- a/lib/gl_xomap.c
+++ b/lib/gl_xomap.c
@@ -1,6 +1,6 @@
 /* Abstract ordered map data type, with out-of-memory checking.
 
-   Copyright (C) 2018-2022 Free Software Foundation, Inc.
+   Copyright (C) 2018-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published
diff --git a/lib/gl_xomap.h b/lib/gl_xomap.h
index 9886058bd3..4b7da8d019 100644
--- a/lib/gl_xomap.h
+++ b/lib/gl_xomap.h
@@ -1,5 +1,5 @@
 /* Abstract ordered map data type, with out-of-memory checking.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2018.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/gl_xoset.c b/lib/gl_xoset.c
index 927402619d..4dc4c29876 100644
--- a/lib/gl_xoset.c
+++ b/lib/gl_xoset.c
@@ -1,6 +1,6 @@
 /* Abstract ordered set data type, with out-of-memory checking.
 
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published
diff --git a/lib/gl_xoset.h b/lib/gl_xoset.h
index 0051970519..f58930985c 100644
--- a/lib/gl_xoset.h
+++ b/lib/gl_xoset.h
@@ -1,5 +1,5 @@
 /* Abstract ordered set data type, with out-of-memory checking.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/gl_xset.c b/lib/gl_xset.c
index fb7c146242..23589bd2b9 100644
--- a/lib/gl_xset.c
+++ b/lib/gl_xset.c
@@ -1,6 +1,6 @@
 /* Abstract set data type, with out-of-memory checking.
 
-   Copyright (C) 2018-2022 Free Software Foundation, Inc.
+   Copyright (C) 2018-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published
diff --git a/lib/gl_xset.h b/lib/gl_xset.h
index ad80a8c2a9..769bca8210 100644
--- a/lib/gl_xset.h
+++ b/lib/gl_xset.h
@@ -1,5 +1,5 @@
 /* Abstract set data type, with out-of-memory checking.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/gl_xsublist.c b/lib/gl_xsublist.c
index 2d34338dea..6e89fe1bf3 100644
--- a/lib/gl_xsublist.c
+++ b/lib/gl_xsublist.c
@@ -1,7 +1,7 @@
 /* Sequential list data type backed by another list, with out-of-memory
    checking.
 
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published
diff --git a/lib/gl_xsublist.h b/lib/gl_xsublist.h
index 55b2bdb4ca..47db4ab277 100644
--- a/lib/gl_xsublist.h
+++ b/lib/gl_xsublist.h
@@ -1,6 +1,6 @@
 /* Sequential list data type backed by another list, with out-of-memory
    checking.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/glob-libc.h b/lib/glob-libc.h
index efef63d328..09b251e569 100644
--- a/lib/glob-libc.h
+++ b/lib/glob-libc.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991-2022 Free Software Foundation, Inc.
+/* Copyright (C) 1991-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/lib/glob.c b/lib/glob.c
index d9206495d5..ddca1e9820 100644
--- a/lib/glob.c
+++ b/lib/glob.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991-2022 Free Software Foundation, Inc.
+/* Copyright (C) 1991-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/lib/glob.in.h b/lib/glob.in.h
index a0a3156cd7..c628a9bcbd 100644
--- a/lib/glob.in.h
+++ b/lib/glob.in.h
@@ -1,6 +1,6 @@
 /* glob.h -- Find a path matching a pattern.
 
-   Copyright (C) 2005-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2007, 2009-2023 Free Software Foundation, Inc.
 
    Written by Derek Price <derek@ximbiot.com> & Paul Eggert 
<eggert@CS.UCLA.EDU>
 
diff --git a/lib/glob_internal.h b/lib/glob_internal.h
index bd023927b0..b85fa4ff1b 100644
--- a/lib/glob_internal.h
+++ b/lib/glob_internal.h
@@ -1,5 +1,5 @@
 /* Shared definition for glob and glob_pattern_p.
-   Copyright (C) 2017-2022 Free Software Foundation, Inc.
+   Copyright (C) 2017-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/lib/glob_pattern_p.c b/lib/glob_pattern_p.c
index 4044a50846..8ac0bc608a 100644
--- a/lib/glob_pattern_p.c
+++ b/lib/glob_pattern_p.c
@@ -1,5 +1,5 @@
 /* Return nonzero if PATTERN contains any metacharacters.
-   Copyright (C) 2017-2022 Free Software Foundation, Inc.
+   Copyright (C) 2017-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/lib/globfree.c b/lib/globfree.c
index f034becfb4..853f3bef77 100644
--- a/lib/globfree.c
+++ b/lib/globfree.c
@@ -1,5 +1,5 @@
 /* Frees the dynamically allocated storage from an earlier call to glob.
-   Copyright (C) 2017-2022 Free Software Foundation, Inc.
+   Copyright (C) 2017-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/lib/glthread/cond.c b/lib/glthread/cond.c
index 6150ba54e8..3856a13cab 100644
--- a/lib/glthread/cond.c
+++ b/lib/glthread/cond.c
@@ -1,5 +1,5 @@
 /* Condition variables for multithreading.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/glthread/cond.h b/lib/glthread/cond.h
index 1109edb902..5e6f681cac 100644
--- a/lib/glthread/cond.h
+++ b/lib/glthread/cond.h
@@ -1,5 +1,5 @@
 /* Condition variables for multithreading.
-   Copyright (C) 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/glthread/lock.c b/lib/glthread/lock.c
index b650c21930..82fb7553f6 100644
--- a/lib/glthread/lock.c
+++ b/lib/glthread/lock.c
@@ -1,5 +1,5 @@
 /* Locking in multithreaded situations.
-   Copyright (C) 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/glthread/lock.h b/lib/glthread/lock.h
index 47eed8fea3..ae3ee2d671 100644
--- a/lib/glthread/lock.h
+++ b/lib/glthread/lock.h
@@ -1,5 +1,5 @@
 /* Locking in multithreaded situations.
-   Copyright (C) 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/glthread/thread.c b/lib/glthread/thread.c
index 0b923c040d..1f28be59c8 100644
--- a/lib/glthread/thread.c
+++ b/lib/glthread/thread.c
@@ -1,5 +1,5 @@
 /* Creating and controlling threads.
-   Copyright (C) 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/glthread/thread.h b/lib/glthread/thread.h
index bb60d8a0fb..788dc5fe68 100644
--- a/lib/glthread/thread.h
+++ b/lib/glthread/thread.h
@@ -1,5 +1,5 @@
 /* Creating and controlling threads.
-   Copyright (C) 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/glthread/threadlib.c b/lib/glthread/threadlib.c
index 88a76bad78..5ecf827ff3 100644
--- a/lib/glthread/threadlib.c
+++ b/lib/glthread/threadlib.c
@@ -1,5 +1,5 @@
 /* Multithreading primitives.
-   Copyright (C) 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/glthread/tls.c b/lib/glthread/tls.c
index 54e7b3642a..f67ac3ef80 100644
--- a/lib/glthread/tls.c
+++ b/lib/glthread/tls.c
@@ -1,5 +1,5 @@
 /* Thread-local storage in multithreaded situations.
-   Copyright (C) 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/glthread/tls.h b/lib/glthread/tls.h
index 27b5bb27bc..aaaf0bb3b7 100644
--- a/lib/glthread/tls.h
+++ b/lib/glthread/tls.h
@@ -1,5 +1,5 @@
 /* Thread-local storage in multithreaded situations.
-   Copyright (C) 2005, 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005, 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/glthread/yield.h b/lib/glthread/yield.h
index f74267ea23..3845517645 100644
--- a/lib/glthread/yield.h
+++ b/lib/glthread/yield.h
@@ -1,5 +1,5 @@
 /* Yielding the processor to other threads and processes.
-   Copyright (C) 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/grantpt.c b/lib/grantpt.c
index 1eea4eb8ae..7b095f056e 100644
--- a/lib/grantpt.c
+++ b/lib/grantpt.c
@@ -1,5 +1,5 @@
 /* Acquire ownership of the slave side of a pseudo-terminal.
-   Copyright (C) 1998-2002, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1998-2002, 2009-2023 Free Software Foundation, Inc.
    Contributed by Zack Weinberg <zack@rabi.phys.columbia.edu>, 1998.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/group-member.c b/lib/group-member.c
index cd43f36f4e..96a09f94a8 100644
--- a/lib/group-member.c
+++ b/lib/group-member.c
@@ -1,6 +1,6 @@
 /* group-member.c -- determine whether group id is in calling user's group list
 
-   Copyright (C) 1994, 1997-1998, 2003, 2005-2006, 2009-2022 Free Software
+   Copyright (C) 1994, 1997-1998, 2003, 2005-2006, 2009-2023 Free Software
    Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/hamt.c b/lib/hamt.c
index be9712561a..aa76f9029e 100644
--- a/lib/hamt.c
+++ b/lib/hamt.c
@@ -1,5 +1,5 @@
 /* (Persistent) hash array mapped tries.
-   Copyright (C) 2021-2022 Free Software Foundation, Inc.
+   Copyright (C) 2021-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/hamt.h b/lib/hamt.h
index 6cbc7fd7d2..6263b405bf 100644
--- a/lib/hamt.h
+++ b/lib/hamt.h
@@ -1,5 +1,5 @@
 /* (Persistent) hash array mapped tries.
-   Copyright (C) 2021-2022 Free Software Foundation, Inc.
+   Copyright (C) 2021-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/hard-locale.c b/lib/hard-locale.c
index f7fbc470b1..0a28552e75 100644
--- a/lib/hard-locale.c
+++ b/lib/hard-locale.c
@@ -1,6 +1,6 @@
 /* hard-locale.c -- Determine whether a locale is hard.
 
-   Copyright (C) 1997-1999, 2002-2004, 2006-2007, 2009-2022 Free Software
+   Copyright (C) 1997-1999, 2002-2004, 2006-2007, 2009-2023 Free Software
    Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/hard-locale.h b/lib/hard-locale.h
index d0fef9b629..880c9e85db 100644
--- a/lib/hard-locale.h
+++ b/lib/hard-locale.h
@@ -1,6 +1,6 @@
 /* Determine whether a locale is hard.
 
-   Copyright (C) 1999, 2003-2004, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2003-2004, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/hash-pjw-bare.c b/lib/hash-pjw-bare.c
index 31944a1d99..e3ca58320a 100644
--- a/lib/hash-pjw-bare.c
+++ b/lib/hash-pjw-bare.c
@@ -1,6 +1,6 @@
 /* hash-pjw-bare.c -- compute a hash value from a provided buffer.
 
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/hash-pjw-bare.h b/lib/hash-pjw-bare.h
index a18c7f1bdd..fb847946fb 100644
--- a/lib/hash-pjw-bare.h
+++ b/lib/hash-pjw-bare.h
@@ -1,5 +1,5 @@
 /* hash-pjw-bare.h -- declaration for a simple hash function
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/hash-pjw.c b/lib/hash-pjw.c
index 8ba139d571..74afac76de 100644
--- a/lib/hash-pjw.c
+++ b/lib/hash-pjw.c
@@ -1,6 +1,6 @@
 /* hash-pjw.c -- compute a hash value from a NUL-terminated string.
 
-   Copyright (C) 2001, 2003, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001, 2003, 2006, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/hash-pjw.h b/lib/hash-pjw.h
index cdf4da279f..5e046c54d4 100644
--- a/lib/hash-pjw.h
+++ b/lib/hash-pjw.h
@@ -1,5 +1,5 @@
 /* hash-pjw.h -- declaration for a simple hash function
-   Copyright (C) 2001, 2003, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001, 2003, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/hash-triple-simple.c b/lib/hash-triple-simple.c
index b021f34862..b0fd31dc3a 100644
--- a/lib/hash-triple-simple.c
+++ b/lib/hash-triple-simple.c
@@ -1,5 +1,5 @@
 /* Hash functions for file-related triples: name, device, inode.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/hash-triple.c b/lib/hash-triple.c
index dfb98b7d0c..3e51b5992e 100644
--- a/lib/hash-triple.c
+++ b/lib/hash-triple.c
@@ -1,5 +1,5 @@
 /* Hash functions for file-related triples: name, device, inode.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/hash-triple.h b/lib/hash-triple.h
index d5f7098594..64d437285d 100644
--- a/lib/hash-triple.h
+++ b/lib/hash-triple.h
@@ -1,5 +1,5 @@
 /* Hash functions for file-related (name, device, inode) triples.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/hash.c b/lib/hash.c
index eb723416e6..918aa0d1c3 100644
--- a/lib/hash.c
+++ b/lib/hash.c
@@ -1,6 +1,6 @@
 /* hash - hashing table processing.
 
-   Copyright (C) 1998-2004, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1998-2004, 2006-2007, 2009-2023 Free Software Foundation, Inc.
 
    Written by Jim Meyering, 1992.
 
diff --git a/lib/hash.h b/lib/hash.h
index 6bf47ffd0e..fe88b4dda8 100644
--- a/lib/hash.h
+++ b/lib/hash.h
@@ -1,5 +1,5 @@
 /* hash - hashing table processing.
-   Copyright (C) 1998-1999, 2001, 2003, 2009-2022 Free Software Foundation,
+   Copyright (C) 1998-1999, 2001, 2003, 2009-2023 Free Software Foundation,
    Inc.
    Written by Jim Meyering <meyering@ascend.com>, 1998.
 
diff --git a/lib/hmac-md5.c b/lib/hmac-md5.c
index 9a83c7449e..4765db2dca 100644
--- a/lib/hmac-md5.c
+++ b/lib/hmac-md5.c
@@ -1,5 +1,5 @@
 /* hmac-md5.c -- hashed message authentication codes
-   Copyright (C) 2018-2022 Free Software Foundation, Inc.
+   Copyright (C) 2018-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/hmac-sha1.c b/lib/hmac-sha1.c
index 3a54b2b094..34bb137514 100644
--- a/lib/hmac-sha1.c
+++ b/lib/hmac-sha1.c
@@ -1,5 +1,5 @@
 /* hmac-sha1.c -- hashed message authentication codes
-   Copyright (C) 2018-2022 Free Software Foundation, Inc.
+   Copyright (C) 2018-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/hmac-sha256.c b/lib/hmac-sha256.c
index b02d109056..663d44fe40 100644
--- a/lib/hmac-sha256.c
+++ b/lib/hmac-sha256.c
@@ -1,5 +1,5 @@
 /* hmac-sha256.c -- hashed message authentication codes
-   Copyright (C) 2018-2022 Free Software Foundation, Inc.
+   Copyright (C) 2018-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/hmac-sha512.c b/lib/hmac-sha512.c
index e0e8a863aa..49b6ec92b7 100644
--- a/lib/hmac-sha512.c
+++ b/lib/hmac-sha512.c
@@ -1,5 +1,5 @@
 /* hmac-sha512.c -- hashed message authentication codes
-   Copyright (C) 2018-2022 Free Software Foundation, Inc.
+   Copyright (C) 2018-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/hmac.c b/lib/hmac.c
index bfc685b045..0be03fcc0d 100644
--- a/lib/hmac.c
+++ b/lib/hmac.c
@@ -1,5 +1,5 @@
 /* hmac.c -- hashed message authentication codes
-   Copyright (C) 2005-2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2006, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/hmac.h b/lib/hmac.h
index 359f8e63db..175a0360e0 100644
--- a/lib/hmac.h
+++ b/lib/hmac.h
@@ -1,5 +1,5 @@
 /* hmac.h -- hashed message authentication codes
-   Copyright (C) 2005, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/human.c b/lib/human.c
index 0ce23a6b1d..b96ddee02e 100644
--- a/lib/human.c
+++ b/lib/human.c
@@ -1,6 +1,6 @@
 /* human.c -- print human readable file size
 
-   Copyright (C) 1996-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1996-2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/human.h b/lib/human.h
index 34cedff4f2..939fc1f1b6 100644
--- a/lib/human.h
+++ b/lib/human.h
@@ -1,6 +1,6 @@
 /* human.h -- print human readable file size
 
-   Copyright (C) 1996-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1996-2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/hypot.c b/lib/hypot.c
index 4b7a4e1b04..22b33d6f25 100644
--- a/lib/hypot.c
+++ b/lib/hypot.c
@@ -1,5 +1,5 @@
 /* Hypotenuse of a right-angled triangle.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/hypotf.c b/lib/hypotf.c
index 0a1368ff74..b2bc3a3ecd 100644
--- a/lib/hypotf.c
+++ b/lib/hypotf.c
@@ -1,5 +1,5 @@
 /* Hypotenuse of a right-angled triangle.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/hypotl.c b/lib/hypotl.c
index c370577c00..f091772e2d 100644
--- a/lib/hypotl.c
+++ b/lib/hypotl.c
@@ -1,5 +1,5 @@
 /* Hypotenuse of a right-angled triangle.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/i-ring.c b/lib/i-ring.c
index 659c61c092..7eb2939db6 100644
--- a/lib/i-ring.c
+++ b/lib/i-ring.c
@@ -1,5 +1,5 @@
 /* a simple ring buffer
-   Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/i-ring.h b/lib/i-ring.h
index d4efb9726d..a2e0c7a571 100644
--- a/lib/i-ring.h
+++ b/lib/i-ring.h
@@ -1,5 +1,5 @@
 /* definitions for a simple ring buffer
-   Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/ialloc.c b/lib/ialloc.c
index 43c1043325..cd44d8caf7 100644
--- a/lib/ialloc.c
+++ b/lib/ialloc.c
@@ -1,6 +1,6 @@
 /* malloc with idx_t rather than size_t
 
-   Copyright 2021-2022 Free Software Foundation, Inc.
+   Copyright 2021-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/ialloc.h b/lib/ialloc.h
index 37cf4bfb37..1d43faf388 100644
--- a/lib/ialloc.h
+++ b/lib/ialloc.h
@@ -1,6 +1,6 @@
 /* ialloc.h -- malloc with idx_t rather than size_t
 
-   Copyright 2021-2022 Free Software Foundation, Inc.
+   Copyright 2021-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/iconv.c b/lib/iconv.c
index efab53d887..9f6f7a90f1 100644
--- a/lib/iconv.c
+++ b/lib/iconv.c
@@ -1,5 +1,5 @@
 /* Character set conversion.
-   Copyright (C) 1999-2001, 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999-2001, 2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/iconv.in.h b/lib/iconv.in.h
index 4c5a31c3bf..09943a72cb 100644
--- a/lib/iconv.in.h
+++ b/lib/iconv.in.h
@@ -1,6 +1,6 @@
 /* A GNU-like <iconv.h>.
 
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/iconv_close.c b/lib/iconv_close.c
index 2d7fb17ef7..41ea96e792 100644
--- a/lib/iconv_close.c
+++ b/lib/iconv_close.c
@@ -1,5 +1,5 @@
 /* Character set conversion.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/iconv_open-aix.gperf b/lib/iconv_open-aix.gperf
index 024da21582..c1625d1d5d 100644
--- a/lib/iconv_open-aix.gperf
+++ b/lib/iconv_open-aix.gperf
@@ -1,5 +1,5 @@
 /* Character set conversion.
-   Copyright (C) 2007, 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2020-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/iconv_open-hpux.gperf b/lib/iconv_open-hpux.gperf
index 12057505d9..691995c83b 100644
--- a/lib/iconv_open-hpux.gperf
+++ b/lib/iconv_open-hpux.gperf
@@ -1,5 +1,5 @@
 /* Character set conversion.
-   Copyright (C) 2007, 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2020-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/iconv_open-irix.gperf b/lib/iconv_open-irix.gperf
index 92a2689dfb..a6b84f91f3 100644
--- a/lib/iconv_open-irix.gperf
+++ b/lib/iconv_open-irix.gperf
@@ -1,5 +1,5 @@
 /* Character set conversion.
-   Copyright (C) 2007, 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2020-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/iconv_open-osf.gperf b/lib/iconv_open-osf.gperf
index 746f563028..9cffd4802e 100644
--- a/lib/iconv_open-osf.gperf
+++ b/lib/iconv_open-osf.gperf
@@ -1,5 +1,5 @@
 /* Character set conversion.
-   Copyright (C) 2007, 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2020-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/iconv_open-solaris.gperf b/lib/iconv_open-solaris.gperf
index fbd6f9d74f..c522683356 100644
--- a/lib/iconv_open-solaris.gperf
+++ b/lib/iconv_open-solaris.gperf
@@ -1,5 +1,5 @@
 /* Character set conversion.
-   Copyright (C) 2007, 2009, 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009, 2020-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/iconv_open-zos.gperf b/lib/iconv_open-zos.gperf
index 6912485e1b..f188e1392d 100644
--- a/lib/iconv_open-zos.gperf
+++ b/lib/iconv_open-zos.gperf
@@ -1,5 +1,5 @@
 /* Character set conversion.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/iconv_open.c b/lib/iconv_open.c
index 02c240ee98..be70de2b7b 100644
--- a/lib/iconv_open.c
+++ b/lib/iconv_open.c
@@ -1,5 +1,5 @@
 /* Character set conversion.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/iconveh.h b/lib/iconveh.h
index 058f68ca2a..2220d36e19 100644
--- a/lib/iconveh.h
+++ b/lib/iconveh.h
@@ -1,5 +1,5 @@
 /* Character set conversion handler type.
-   Copyright (C) 2001-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/idcache.c b/lib/idcache.c
index 580a627023..ff1233aa17 100644
--- a/lib/idcache.c
+++ b/lib/idcache.c
@@ -1,6 +1,6 @@
 /* idcache.c -- map user and group IDs, cached for speed
 
-   Copyright (C) 1985, 1988-1990, 1997-1998, 2003, 2005-2007, 2009-2022 Free
+   Copyright (C) 1985, 1988-1990, 1997-1998, 2003, 2005-2007, 2009-2023 Free
    Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/idcache.h b/lib/idcache.h
index fa3951a67d..1477098a06 100644
--- a/lib/idcache.h
+++ b/lib/idcache.h
@@ -1,5 +1,5 @@
 /* Username <--> uid and groupname <--> gid conversions, with cache for speed.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/idpriv-drop.c b/lib/idpriv-drop.c
index e122cb0881..b059944708 100644
--- a/lib/idpriv-drop.c
+++ b/lib/idpriv-drop.c
@@ -1,5 +1,5 @@
 /* Dropping uid/gid privileges of the current process permanently.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/idpriv-droptemp.c b/lib/idpriv-droptemp.c
index f3272365c8..2a85431ad6 100644
--- a/lib/idpriv-droptemp.c
+++ b/lib/idpriv-droptemp.c
@@ -1,5 +1,5 @@
 /* Dropping uid/gid privileges of the current process temporarily.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/idpriv.h b/lib/idpriv.h
index b97d1922f9..99f87c082f 100644
--- a/lib/idpriv.h
+++ b/lib/idpriv.h
@@ -1,5 +1,5 @@
 /* Dropping uid/gid privileges of the current process.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/idx.h b/lib/idx.h
index c3669ddaca..23020b7ec0 100644
--- a/lib/idx.h
+++ b/lib/idx.h
@@ -1,5 +1,5 @@
 /* A type for indices and sizes.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/lib/ieee754.in.h b/lib/ieee754.in.h
index 2ca9709bb9..8de4c32be5 100644
--- a/lib/ieee754.in.h
+++ b/lib/ieee754.in.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1992-2022 Free Software Foundation, Inc.
+/* Copyright (C) 1992-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/lib/ignore-value.h b/lib/ignore-value.h
index 173b63f537..f0b569af4a 100644
--- a/lib/ignore-value.h
+++ b/lib/ignore-value.h
@@ -1,6 +1,6 @@
 /* ignore a function return without a compiler warning.  -*- coding: utf-8 -*-
 
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/ilogb.c b/lib/ilogb.c
index db6b90f4a3..0bc5c1213a 100644
--- a/lib/ilogb.c
+++ b/lib/ilogb.c
@@ -1,5 +1,5 @@
 /* Floating-point exponent.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/ilogbf.c b/lib/ilogbf.c
index f0a16664b6..1891d6acbd 100644
--- a/lib/ilogbf.c
+++ b/lib/ilogbf.c
@@ -1,5 +1,5 @@
 /* Floating-point exponent.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/ilogbl.c b/lib/ilogbl.c
index 31ee3e1702..e4b4a3c250 100644
--- a/lib/ilogbl.c
+++ b/lib/ilogbl.c
@@ -1,5 +1,5 @@
 /* Floating-point exponent.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/imaxabs.c b/lib/imaxabs.c
index b8c16399b7..d52cc51138 100644
--- a/lib/imaxabs.c
+++ b/lib/imaxabs.c
@@ -1,5 +1,5 @@
 /* imaxabs() function: absolute value of 'intmax_t'.
-   Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/imaxdiv.c b/lib/imaxdiv.c
index 31ff9fcddb..188dd9af0e 100644
--- a/lib/imaxdiv.c
+++ b/lib/imaxdiv.c
@@ -1,5 +1,5 @@
 /* imaxdiv() function: division of 'intmax_t'.
-   Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/imaxtostr.c b/lib/imaxtostr.c
index e84d8ff40f..1ba2fb7ac6 100644
--- a/lib/imaxtostr.c
+++ b/lib/imaxtostr.c
@@ -1,6 +1,6 @@
 /* Convert 'intmax_t' integer to printable string.
 
-   Copyright (C) 2004-2022 Free Software Foundation, Inc.
+   Copyright (C) 2004-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/immutable.c b/lib/immutable.c
index a864aa01d1..d5fb09b7d6 100644
--- a/lib/immutable.c
+++ b/lib/immutable.c
@@ -1,6 +1,6 @@
 /* Immutable data.
 
-   Copyright (C) 2021-2022 Free Software Foundation, Inc.
+   Copyright (C) 2021-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/immutable.h b/lib/immutable.h
index 0cd4d96fe7..c76c625e31 100644
--- a/lib/immutable.h
+++ b/lib/immutable.h
@@ -1,6 +1,6 @@
 /* Immutable data.
 
-   Copyright (C) 2021-2022 Free Software Foundation, Inc.
+   Copyright (C) 2021-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/inet_ntop.c b/lib/inet_ntop.c
index 2d401d22bf..9e2d412e73 100644
--- a/lib/inet_ntop.c
+++ b/lib/inet_ntop.c
@@ -1,6 +1,6 @@
 /* inet_ntop.c -- convert IPv4 and IPv6 addresses from binary to text form
 
-   Copyright (C) 2005-2006, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2006, 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/inet_pton.c b/lib/inet_pton.c
index a239b7d1ea..49a27bb5bb 100644
--- a/lib/inet_pton.c
+++ b/lib/inet_pton.c
@@ -1,6 +1,6 @@
 /* inet_pton.c -- convert IPv4 and IPv6 addresses from text to binary form
 
-   Copyright (C) 2006, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/ino-map.c b/lib/ino-map.c
index 9a97391b8a..52a75535a5 100644
--- a/lib/ino-map.c
+++ b/lib/ino-map.c
@@ -1,6 +1,6 @@
 /* Map an ino_t inode number to a small integer.
 
-   Copyright 2009-2022 Free Software Foundation, Inc.
+   Copyright 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/ino-map.h b/lib/ino-map.h
index c0b4f76f3f..06a664b3ed 100644
--- a/lib/ino-map.h
+++ b/lib/ino-map.h
@@ -1,5 +1,5 @@
 /* Maintain a mapping of ino_t numbers to small integers.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/integer_length.c b/lib/integer_length.c
index f1fb48b989..642f1f5260 100644
--- a/lib/integer_length.c
+++ b/lib/integer_length.c
@@ -1,5 +1,5 @@
 /* integer_length - find most significant bit in an 'unsigned int'.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/integer_length.h b/lib/integer_length.h
index 85082c833b..196461750a 100644
--- a/lib/integer_length.h
+++ b/lib/integer_length.h
@@ -1,5 +1,5 @@
 /* integer_length - find most significant bit in an unsigned integer.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/integer_length_l.c b/lib/integer_length_l.c
index fe49f5cb2d..41ed05e542 100644
--- a/lib/integer_length_l.c
+++ b/lib/integer_length_l.c
@@ -1,5 +1,5 @@
 /* integer_length_l - find most significant bit in an 'unsigned long'.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/integer_length_ll.c b/lib/integer_length_ll.c
index 7c6cff1202..c9a30cb6e9 100644
--- a/lib/integer_length_ll.c
+++ b/lib/integer_length_ll.c
@@ -1,5 +1,5 @@
 /* integer_length_ll - find most significant bit in an 'unsigned long long'.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/intprops-internal.h b/lib/intprops-internal.h
index f6455f7855..0467a9ca8f 100644
--- a/lib/intprops-internal.h
+++ b/lib/intprops-internal.h
@@ -1,6 +1,6 @@
 /* intprops-internal.h -- properties of integer types not visible to users
 
-   Copyright (C) 2001-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify it
    under the terms of the GNU Lesser General Public License as published
diff --git a/lib/intprops.h b/lib/intprops.h
index f182ddc1fe..44b5e60fb9 100644
--- a/lib/intprops.h
+++ b/lib/intprops.h
@@ -1,6 +1,6 @@
 /* intprops.h -- properties of integer types
 
-   Copyright (C) 2001-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify it
    under the terms of the GNU Lesser General Public License as published
diff --git a/lib/inttostr.c b/lib/inttostr.c
index 6d933cfbe7..2999153559 100644
--- a/lib/inttostr.c
+++ b/lib/inttostr.c
@@ -1,6 +1,6 @@
 /* Convert 'int' integer to printable string.
 
-   Copyright (C) 2004-2022 Free Software Foundation, Inc.
+   Copyright (C) 2004-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/inttostr.h b/lib/inttostr.h
index 8a47e85824..6fbe2312bf 100644
--- a/lib/inttostr.h
+++ b/lib/inttostr.h
@@ -1,6 +1,6 @@
 /* inttostr.h -- convert integers to printable strings
 
-   Copyright (C) 2001-2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2006, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/inttypes.in.h b/lib/inttypes.in.h
index 853eca087c..50a2bbfcda 100644
--- a/lib/inttypes.in.h
+++ b/lib/inttypes.in.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2006-2022 Free Software Foundation, Inc.
+/* Copyright (C) 2006-2023 Free Software Foundation, Inc.
    Written by Paul Eggert, Bruno Haible, Derek Price.
    This file is part of gnulib.
 
diff --git a/lib/ioctl.c b/lib/ioctl.c
index b1c7b2ee6d..65cce13796 100644
--- a/lib/ioctl.c
+++ b/lib/ioctl.c
@@ -1,6 +1,6 @@
 /* ioctl.c --- wrappers for Windows ioctl function
 
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/isapipe.c b/lib/isapipe.c
index 163d6d6cf8..513bacd7d2 100644
--- a/lib/isapipe.c
+++ b/lib/isapipe.c
@@ -1,6 +1,6 @@
 /* Test whether a file descriptor is a pipe.
 
-   Copyright (C) 2006, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/isapipe.h b/lib/isapipe.h
index b400642e70..50a19c43b2 100644
--- a/lib/isapipe.h
+++ b/lib/isapipe.h
@@ -1,6 +1,6 @@
 /* Test whether a file descriptor is a pipe.
 
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/isatty.c b/lib/isatty.c
index ba40d91f93..cb2cdab2f3 100644
--- a/lib/isatty.c
+++ b/lib/isatty.c
@@ -1,5 +1,5 @@
 /* isatty() replacement.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/isblank.c b/lib/isblank.c
index e354559378..8aad6aff91 100644
--- a/lib/isblank.c
+++ b/lib/isblank.c
@@ -1,6 +1,6 @@
 /* Test whether a character is a blank.
 
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/isdir.c b/lib/isdir.c
index aee82f9e4b..5cd458ddf3 100644
--- a/lib/isdir.c
+++ b/lib/isdir.c
@@ -1,6 +1,6 @@
 /* isdir.c -- determine whether a directory exists
 
-   Copyright (C) 1990, 1998, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1990, 1998, 2006, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/isdir.h b/lib/isdir.h
index ce763f5a0c..be91428475 100644
--- a/lib/isdir.h
+++ b/lib/isdir.h
@@ -1,6 +1,6 @@
 /* Determine whether a directory exists.
 
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published
diff --git a/lib/isfinite.c b/lib/isfinite.c
index c3a0da57c5..a81b9385e5 100644
--- a/lib/isfinite.c
+++ b/lib/isfinite.c
@@ -1,5 +1,5 @@
 /* Test for finite value (zero, subnormal, or normal, and not infinite or NaN).
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/isinf.c b/lib/isinf.c
index c3a5053046..2be6c68a44 100644
--- a/lib/isinf.c
+++ b/lib/isinf.c
@@ -1,5 +1,5 @@
 /* Test for positive or negative infinity.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/isnan.c b/lib/isnan.c
index bd119f691c..7119bb298e 100644
--- a/lib/isnan.c
+++ b/lib/isnan.c
@@ -1,5 +1,5 @@
 /* Test for NaN that does not need libm.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/isnand-nolibm.h b/lib/isnand-nolibm.h
index aad1391595..9c75a8c47b 100644
--- a/lib/isnand-nolibm.h
+++ b/lib/isnand-nolibm.h
@@ -1,5 +1,5 @@
 /* Test for NaN that does not need libm.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/isnand.c b/lib/isnand.c
index 26501b5d63..e14d2e6fb2 100644
--- a/lib/isnand.c
+++ b/lib/isnand.c
@@ -1,5 +1,5 @@
 /* Test for NaN that does not need libm.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/isnanf-nolibm.h b/lib/isnanf-nolibm.h
index 4ce81d6cda..cc6b4198ff 100644
--- a/lib/isnanf-nolibm.h
+++ b/lib/isnanf-nolibm.h
@@ -1,5 +1,5 @@
 /* Test for NaN that does not need libm.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/isnanf.c b/lib/isnanf.c
index e8b721acfa..55252ca6d6 100644
--- a/lib/isnanf.c
+++ b/lib/isnanf.c
@@ -1,5 +1,5 @@
 /* Test for NaN that does not need libm.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/isnanl-nolibm.h b/lib/isnanl-nolibm.h
index a4374e70dc..f04c489bb8 100644
--- a/lib/isnanl-nolibm.h
+++ b/lib/isnanl-nolibm.h
@@ -1,5 +1,5 @@
 /* Test for NaN that does not need libm.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/isnanl.c b/lib/isnanl.c
index 2f71d6c3e1..286f245097 100644
--- a/lib/isnanl.c
+++ b/lib/isnanl.c
@@ -1,5 +1,5 @@
 /* Test for NaN that does not need libm.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/iswblank.c b/lib/iswblank.c
index 2e601f8e94..5540f1fe03 100644
--- a/lib/iswblank.c
+++ b/lib/iswblank.c
@@ -1,5 +1,5 @@
 /* Test wide character for being blank.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/iswctype-impl.h b/lib/iswctype-impl.h
index 60b5b0ce6a..e83b27f6ae 100644
--- a/lib/iswctype-impl.h
+++ b/lib/iswctype-impl.h
@@ -1,5 +1,5 @@
 /* Test whether a wide character has a given property.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/iswctype.c b/lib/iswctype.c
index 661e5aa774..d4f35ffc01 100644
--- a/lib/iswctype.c
+++ b/lib/iswctype.c
@@ -1,5 +1,5 @@
 /* Test whether a wide character has a given property.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/iswdigit.c b/lib/iswdigit.c
index 780263f06d..94db27402b 100644
--- a/lib/iswdigit.c
+++ b/lib/iswdigit.c
@@ -1,5 +1,5 @@
 /* Test wide character for being a digit.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/iswxdigit.c b/lib/iswxdigit.c
index f20b9b3687..7ec4566d0e 100644
--- a/lib/iswxdigit.c
+++ b/lib/iswxdigit.c
@@ -1,5 +1,5 @@
 /* Test wide character for being a hexadecimal digit.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/itold.c b/lib/itold.c
index fe4a384237..0ef4464eea 100644
--- a/lib/itold.c
+++ b/lib/itold.c
@@ -1,5 +1,5 @@
 /* Replacement for 'int' to 'long double' conversion routine.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/javacomp.c b/lib/javacomp.c
index 39fb454454..802742dd95 100644
--- a/lib/javacomp.c
+++ b/lib/javacomp.c
@@ -1,5 +1,5 @@
 /* Compile a Java program.
-   Copyright (C) 2001-2003, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2003, 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <haible@clisp.cons.org>, 2001.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/javacomp.h b/lib/javacomp.h
index cf1222ed9b..825efb4667 100644
--- a/lib/javacomp.h
+++ b/lib/javacomp.h
@@ -1,5 +1,5 @@
 /* Compile a Java program.
-   Copyright (C) 2001-2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <haible@clisp.cons.org>, 2001.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/javaexec.c b/lib/javaexec.c
index 6733681232..0c2c02854d 100644
--- a/lib/javaexec.c
+++ b/lib/javaexec.c
@@ -1,5 +1,5 @@
 /* Execute a Java program.
-   Copyright (C) 2001-2003, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2003, 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <haible@clisp.cons.org>, 2001.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/javaexec.h b/lib/javaexec.h
index bae2b005a1..2eeb3db1f4 100644
--- a/lib/javaexec.h
+++ b/lib/javaexec.h
@@ -1,5 +1,5 @@
 /* Execute a Java program.
-   Copyright (C) 2001-2002, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2002, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <haible@clisp.cons.org>, 2001.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/javaversion.c b/lib/javaversion.c
index b24fe2b5a0..aef1be3077 100644
--- a/lib/javaversion.c
+++ b/lib/javaversion.c
@@ -1,5 +1,5 @@
 /* Determine the Java version supported by javaexec.
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/javaversion.h b/lib/javaversion.h
index 6c9955e8a5..1e89291e7d 100644
--- a/lib/javaversion.h
+++ b/lib/javaversion.h
@@ -1,5 +1,5 @@
 /* Determine the Java version supported by javaexec.
-   Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/javaversion.java b/lib/javaversion.java
index 33e024ef9a..53a6bae72f 100644
--- a/lib/javaversion.java
+++ b/lib/javaversion.java
@@ -1,5 +1,5 @@
 /* Show the Java version.
- * Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/lib/langinfo.in.h b/lib/langinfo.in.h
index 98aea6a845..c7555a6a59 100644
--- a/lib/langinfo.in.h
+++ b/lib/langinfo.in.h
@@ -1,5 +1,5 @@
 /* Substitute for and wrapper around <langinfo.h>.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/lc-charset-dispatch.c b/lib/lc-charset-dispatch.c
index 66d78fd3e8..cd74466b4c 100644
--- a/lib/lc-charset-dispatch.c
+++ b/lib/lc-charset-dispatch.c
@@ -1,5 +1,5 @@
 /* Dispatching based on the current locale's character encoding.
-   Copyright (C) 2018-2022 Free Software Foundation, Inc.
+   Copyright (C) 2018-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/lc-charset-dispatch.h b/lib/lc-charset-dispatch.h
index 3867c3232b..c82b6a609d 100644
--- a/lib/lc-charset-dispatch.h
+++ b/lib/lc-charset-dispatch.h
@@ -1,5 +1,5 @@
 /* Dispatching based on the current locale's character encoding.
-   Copyright (C) 2018-2022 Free Software Foundation, Inc.
+   Copyright (C) 2018-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/lchmod.c b/lib/lchmod.c
index 8410a2d835..b2d1b8bfde 100644
--- a/lib/lchmod.c
+++ b/lib/lchmod.c
@@ -1,6 +1,6 @@
 /* Implement lchmod on platforms where it does not work correctly.
 
-   Copyright 2020-2022 Free Software Foundation, Inc.
+   Copyright 2020-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/lchown.c b/lib/lchown.c
index a6ea1fab4b..19a68c052b 100644
--- a/lib/lchown.c
+++ b/lib/lchown.c
@@ -1,6 +1,6 @@
 /* Provide a stub lchown function for systems that lack it.
 
-   Copyright (C) 1998-1999, 2002, 2004, 2006-2007, 2009-2022 Free Software
+   Copyright (C) 1998-1999, 2002, 2004, 2006-2007, 2009-2023 Free Software
    Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/ldexpf.c b/lib/ldexpf.c
index 0909327ce1..4ff458e3af 100644
--- a/lib/ldexpf.c
+++ b/lib/ldexpf.c
@@ -1,5 +1,5 @@
 /* Multiply a 'float' by a power of 2.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/ldexpl.c b/lib/ldexpl.c
index d801cd9346..47f133c58f 100644
--- a/lib/ldexpl.c
+++ b/lib/ldexpl.c
@@ -1,7 +1,7 @@
 /* Emulation for ldexpl.
    Contributed by Paolo Bonzini
 
-   Copyright 2002-2003, 2007-2022 Free Software Foundation, Inc.
+   Copyright 2002-2003, 2007-2023 Free Software Foundation, Inc.
 
    This file is part of gnulib.
 
diff --git a/lib/ldtoastr.c b/lib/ldtoastr.c
index ab0dcfa63c..f33a3b1b27 100644
--- a/lib/ldtoastr.c
+++ b/lib/ldtoastr.c
@@ -1,6 +1,6 @@
 /* Convert 'long double' to accurate string.
 
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published
diff --git a/lib/libc-config.h b/lib/libc-config.h
index a56665b1ce..1d28e58c97 100644
--- a/lib/libc-config.h
+++ b/lib/libc-config.h
@@ -1,6 +1,6 @@
 /* System definitions for code taken from the GNU C Library
 
-   Copyright 2017-2022 Free Software Foundation, Inc.
+   Copyright 2017-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
diff --git a/lib/libunistring.valgrind b/lib/libunistring.valgrind
index 630ded08b8..c2c58208da 100644
--- a/lib/libunistring.valgrind
+++ b/lib/libunistring.valgrind
@@ -1,6 +1,6 @@
 # Suppress valgrind messages in an installed libunistring.
 
-# Copyright (C) 2010-2022 Free Software Foundation, Inc.
+# Copyright (C) 2010-2023 Free Software Foundation, Inc.
 #
 # This file is free software.
 # It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
diff --git a/lib/limits.in.h b/lib/limits.in.h
index 931ed15793..eaeac47229 100644
--- a/lib/limits.in.h
+++ b/lib/limits.in.h
@@ -1,6 +1,6 @@
 /* A GNU-like <limits.h>.
 
-   Copyright 2016-2022 Free Software Foundation, Inc.
+   Copyright 2016-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/linebuffer.c b/lib/linebuffer.c
index a679b97c1e..4124bbcb37 100644
--- a/lib/linebuffer.c
+++ b/lib/linebuffer.c
@@ -1,6 +1,6 @@
 /* linebuffer.c -- read arbitrarily long lines
 
-   Copyright (C) 1986, 1991, 1998-1999, 2001, 2003-2004, 2006-2007, 2009-2022
+   Copyright (C) 1986, 1991, 1998-1999, 2001, 2003-2004, 2006-2007, 2009-2023
    Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/linebuffer.h b/lib/linebuffer.h
index 07d45cab96..b4cc8e4e99 100644
--- a/lib/linebuffer.h
+++ b/lib/linebuffer.h
@@ -1,6 +1,6 @@
 /* linebuffer.h -- declarations for reading arbitrarily long lines
 
-   Copyright (C) 1986, 1991, 1998-1999, 2002-2003, 2007, 2009-2022 Free
+   Copyright (C) 1986, 1991, 1998-1999, 2002-2003, 2007, 2009-2023 Free
    Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/link.c b/lib/link.c
index 2023d75bc5..2c81e2f2e3 100644
--- a/lib/link.c
+++ b/lib/link.c
@@ -1,6 +1,6 @@
 /* Emulate link on platforms that lack it, namely native Windows platforms.
 
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/linkat.c b/lib/linkat.c
index 99de4a95cd..3d1ee3962f 100644
--- a/lib/linkat.c
+++ b/lib/linkat.c
@@ -1,5 +1,5 @@
 /* Create a hard link relative to open directories.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/listen.c b/lib/listen.c
index e67bdc9e9f..85600fa8d7 100644
--- a/lib/listen.c
+++ b/lib/listen.c
@@ -1,6 +1,6 @@
 /* listen.c --- wrappers for Windows listen function
 
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/localcharset.c b/lib/localcharset.c
index 17a4a1efa0..7ed9c957db 100644
--- a/lib/localcharset.c
+++ b/lib/localcharset.c
@@ -1,6 +1,6 @@
 /* Determine a canonical name for the current locale's character encoding.
 
-   Copyright (C) 2000-2006, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2000-2006, 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/localcharset.h b/lib/localcharset.h
index 62efbf329c..29ee8dc04b 100644
--- a/lib/localcharset.h
+++ b/lib/localcharset.h
@@ -1,5 +1,5 @@
 /* Determine a canonical name for the current locale's character encoding.
-   Copyright (C) 2000-2003, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2000-2003, 2009-2023 Free Software Foundation, Inc.
    This file is part of the GNU CHARSET Library.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/locale.in.h b/lib/locale.in.h
index 4aef74d487..538b83412b 100644
--- a/lib/locale.in.h
+++ b/lib/locale.in.h
@@ -1,5 +1,5 @@
 /* A POSIX <locale.h>.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/localeconv.c b/lib/localeconv.c
index ef261205d4..60c050f486 100644
--- a/lib/localeconv.c
+++ b/lib/localeconv.c
@@ -1,5 +1,5 @@
 /* Query locale dependent information for formatting numbers.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/localeinfo.c b/lib/localeinfo.c
index 34c020cdc6..d0e63af656 100644
--- a/lib/localeinfo.c
+++ b/lib/localeinfo.c
@@ -1,6 +1,6 @@
 /* locale information
 
-   Copyright 2016-2022 Free Software Foundation, Inc.
+   Copyright 2016-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/localeinfo.h b/lib/localeinfo.h
index f117374a73..bd443ef491 100644
--- a/lib/localeinfo.h
+++ b/lib/localeinfo.h
@@ -1,6 +1,6 @@
 /* locale information
 
-   Copyright 2016-2022 Free Software Foundation, Inc.
+   Copyright 2016-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/localename-table.c b/lib/localename-table.c
index cb3a090708..c5c9266a2f 100644
--- a/lib/localename-table.c
+++ b/lib/localename-table.c
@@ -1,5 +1,5 @@
 /* Table that maps a locale object to the names of the locale categories.
-   Copyright (C) 2018-2022 Free Software Foundation, Inc.
+   Copyright (C) 2018-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as published by
diff --git a/lib/localename-table.h b/lib/localename-table.h
index cfc297c112..532c3c9772 100644
--- a/lib/localename-table.h
+++ b/lib/localename-table.h
@@ -1,5 +1,5 @@
 /* Table that maps a locale object to the names of the locale categories.
-   Copyright (C) 2018-2022 Free Software Foundation, Inc.
+   Copyright (C) 2018-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as published by
diff --git a/lib/localename.c b/lib/localename.c
index 3a1d96ad56..a0e774ccea 100644
--- a/lib/localename.c
+++ b/lib/localename.c
@@ -1,5 +1,5 @@
 /* Determine name of the currently selected locale.
-   Copyright (C) 1995-2022 Free Software Foundation, Inc.
+   Copyright (C) 1995-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as published by
diff --git a/lib/localename.h b/lib/localename.h
index fd110818c4..bfb429cb4d 100644
--- a/lib/localename.h
+++ b/lib/localename.h
@@ -1,5 +1,5 @@
 /* Determine name of the currently selected locale.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as published by
diff --git a/lib/localtime.c b/lib/localtime.c
index b9dfcbf5c3..231b2b45fc 100644
--- a/lib/localtime.c
+++ b/lib/localtime.c
@@ -1,5 +1,5 @@
 /* Work around platform bugs in localtime.
-   Copyright (C) 2017-2022 Free Software Foundation, Inc.
+   Copyright (C) 2017-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/log.c b/lib/log.c
index 84ff5e9f72..9289cf018e 100644
--- a/lib/log.c
+++ b/lib/log.c
@@ -1,5 +1,5 @@
 /* Logarithm.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/log10.c b/lib/log10.c
index af2728cb30..6c6cf31f9d 100644
--- a/lib/log10.c
+++ b/lib/log10.c
@@ -1,5 +1,5 @@
 /* Base 10 logarithmic function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/log10f.c b/lib/log10f.c
index eca06e6331..073f4184d1 100644
--- a/lib/log10f.c
+++ b/lib/log10f.c
@@ -1,5 +1,5 @@
 /* Base 10 logarithmic function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/log10l.c b/lib/log10l.c
index 28c0d494ab..e15dfab1e0 100644
--- a/lib/log10l.c
+++ b/lib/log10l.c
@@ -1,5 +1,5 @@
 /* Base 10 logarithmic function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/log1p.c b/lib/log1p.c
index 31070a37ba..056808307c 100644
--- a/lib/log1p.c
+++ b/lib/log1p.c
@@ -1,5 +1,5 @@
 /* Natural logarithm of 1 plus argument.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/log1pf.c b/lib/log1pf.c
index fcc3d46ca4..95ad2097c4 100644
--- a/lib/log1pf.c
+++ b/lib/log1pf.c
@@ -1,5 +1,5 @@
 /* Natural logarithm of 1 plus argument.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/log1pl.c b/lib/log1pl.c
index b2ef1e27b1..e73b94fad8 100644
--- a/lib/log1pl.c
+++ b/lib/log1pl.c
@@ -1,5 +1,5 @@
 /* Natural logarithm of 1 plus argument.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/log2.c b/lib/log2.c
index 52dfd7c0c8..e676e8bd20 100644
--- a/lib/log2.c
+++ b/lib/log2.c
@@ -1,5 +1,5 @@
 /* Base 2 logarithm.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/log2f.c b/lib/log2f.c
index 1e6aa01bc8..2a0ce2e738 100644
--- a/lib/log2f.c
+++ b/lib/log2f.c
@@ -1,5 +1,5 @@
 /* Base 2 logarithm.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/log2l.c b/lib/log2l.c
index 0d104215ad..72262c7e89 100644
--- a/lib/log2l.c
+++ b/lib/log2l.c
@@ -1,5 +1,5 @@
 /* Base 2 logarithm.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/logb.c b/lib/logb.c
index 0dca7708b0..ef70f073d9 100644
--- a/lib/logb.c
+++ b/lib/logb.c
@@ -1,5 +1,5 @@
 /* Floating-point exponent.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/logbf.c b/lib/logbf.c
index a5dfcd04ca..9c3f7d6e34 100644
--- a/lib/logbf.c
+++ b/lib/logbf.c
@@ -1,5 +1,5 @@
 /* Floating-point exponent.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/logbl.c b/lib/logbl.c
index e1d072f226..efff41405e 100644
--- a/lib/logbl.c
+++ b/lib/logbl.c
@@ -1,5 +1,5 @@
 /* Floating-point exponent.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/logf.c b/lib/logf.c
index 629bdc22f3..4f0d91dc76 100644
--- a/lib/logf.c
+++ b/lib/logf.c
@@ -1,5 +1,5 @@
 /* Natural logarithmic function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/login_tty.c b/lib/login_tty.c
index 0d1a70e8e5..fb20195b5f 100644
--- a/lib/login_tty.c
+++ b/lib/login_tty.c
@@ -1,6 +1,6 @@
 /* Assign a given terminal as controlling terminal and as standard input,
    standard output, standard error of the current process.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/long-options.c b/lib/long-options.c
index 7c8fa1b0f4..212863d743 100644
--- a/lib/long-options.c
+++ b/lib/long-options.c
@@ -1,6 +1,6 @@
 /* Utility to accept --help and --version options as unobtrusively as possible.
 
-   Copyright (C) 1993-1994, 1998-2000, 2002-2006, 2009-2022 Free Software
+   Copyright (C) 1993-1994, 1998-2000, 2002-2006, 2009-2023 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/long-options.h b/lib/long-options.h
index a0f37025eb..ef4035674e 100644
--- a/lib/long-options.h
+++ b/lib/long-options.h
@@ -1,5 +1,5 @@
 /* long-options.h -- declaration for --help- and --version-handling function.
-   Copyright (C) 1993-1994, 1998-1999, 2003, 2009-2022 Free Software
+   Copyright (C) 1993-1994, 1998-1999, 2003, 2009-2023 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/lseek.c b/lib/lseek.c
index 1a9c49bd9f..7919b03ca3 100644
--- a/lib/lseek.c
+++ b/lib/lseek.c
@@ -1,5 +1,5 @@
 /* An lseek() function that detects pipes.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/lstat.c b/lib/lstat.c
index 472bfbceb9..00a4ce2ab8 100644
--- a/lib/lstat.c
+++ b/lib/lstat.c
@@ -1,6 +1,6 @@
 /* Work around a bug of lstat on some systems
 
-   Copyright (C) 1997-2006, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 1997-2006, 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/malloc.c b/lib/malloc.c
index f334dd6e96..3ade35cb63 100644
--- a/lib/malloc.c
+++ b/lib/malloc.c
@@ -1,6 +1,6 @@
 /* malloc() function that is glibc compatible.
 
-   Copyright (C) 1997-1998, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1997-1998, 2006-2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/malloc.in.h b/lib/malloc.in.h
index 125750ba76..de661f0f4b 100644
--- a/lib/malloc.in.h
+++ b/lib/malloc.in.h
@@ -1,5 +1,5 @@
 /* Substitute for and wrapper around <malloc.h>.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/malloc/dynarray-skeleton.c b/lib/malloc/dynarray-skeleton.c
index bad548a498..580c278b7c 100644
--- a/lib/malloc/dynarray-skeleton.c
+++ b/lib/malloc/dynarray-skeleton.c
@@ -1,5 +1,5 @@
 /* Type-safe arrays which grow dynamically.
-   Copyright (C) 2017-2022 Free Software Foundation, Inc.
+   Copyright (C) 2017-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/lib/malloc/dynarray.h b/lib/malloc/dynarray.h
index df1aa4167d..a9a3b0859c 100644
--- a/lib/malloc/dynarray.h
+++ b/lib/malloc/dynarray.h
@@ -1,5 +1,5 @@
 /* Type-safe arrays which grow dynamically.  Shared definitions.
-   Copyright (C) 2017-2022 Free Software Foundation, Inc.
+   Copyright (C) 2017-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/lib/malloc/dynarray_at_failure.c b/lib/malloc/dynarray_at_failure.c
index 062ab7062b..ebc9310982 100644
--- a/lib/malloc/dynarray_at_failure.c
+++ b/lib/malloc/dynarray_at_failure.c
@@ -1,5 +1,5 @@
 /* Report an dynamic array index out of bounds condition.
-   Copyright (C) 2017-2022 Free Software Foundation, Inc.
+   Copyright (C) 2017-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/lib/malloc/dynarray_emplace_enlarge.c 
b/lib/malloc/dynarray_emplace_enlarge.c
index 0cff2e7055..7da539316c 100644
--- a/lib/malloc/dynarray_emplace_enlarge.c
+++ b/lib/malloc/dynarray_emplace_enlarge.c
@@ -1,5 +1,5 @@
 /* Increase the size of a dynamic array in preparation of an emplace operation.
-   Copyright (C) 2017-2022 Free Software Foundation, Inc.
+   Copyright (C) 2017-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/lib/malloc/dynarray_finalize.c b/lib/malloc/dynarray_finalize.c
index 3f360c3aa8..673595a5fa 100644
--- a/lib/malloc/dynarray_finalize.c
+++ b/lib/malloc/dynarray_finalize.c
@@ -1,5 +1,5 @@
 /* Copy the dynamically-allocated area to an explicitly-sized heap allocation.
-   Copyright (C) 2017-2022 Free Software Foundation, Inc.
+   Copyright (C) 2017-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/lib/malloc/dynarray_resize.c b/lib/malloc/dynarray_resize.c
index 8d1922e5c7..7ecd4de63b 100644
--- a/lib/malloc/dynarray_resize.c
+++ b/lib/malloc/dynarray_resize.c
@@ -1,5 +1,5 @@
 /* Increase the size of a dynamic array.
-   Copyright (C) 2017-2022 Free Software Foundation, Inc.
+   Copyright (C) 2017-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/lib/malloc/dynarray_resize_clear.c 
b/lib/malloc/dynarray_resize_clear.c
index 8cf1b0d026..bb23c522a1 100644
--- a/lib/malloc/dynarray_resize_clear.c
+++ b/lib/malloc/dynarray_resize_clear.c
@@ -1,5 +1,5 @@
 /* Increase the size of a dynamic array and clear the new part.
-   Copyright (C) 2017-2022 Free Software Foundation, Inc.
+   Copyright (C) 2017-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/lib/malloca.c b/lib/malloca.c
index 1e19978d90..f055b1e5ca 100644
--- a/lib/malloca.c
+++ b/lib/malloca.c
@@ -1,5 +1,5 @@
 /* Safe automatic memory allocation.
-   Copyright (C) 2003, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2003, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2003, 2018.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/malloca.h b/lib/malloca.h
index 7ec235f370..325c727717 100644
--- a/lib/malloca.h
+++ b/lib/malloca.h
@@ -1,5 +1,5 @@
 /* Safe automatic memory allocation.
-   Copyright (C) 2003-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2003-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2003.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/math.c b/lib/math.c
index 1502a1fd6d..67cabbcf8f 100644
--- a/lib/math.c
+++ b/lib/math.c
@@ -1,6 +1,6 @@
 /* Inline functions for <math.h>.
 
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/math.in.h b/lib/math.in.h
index 0ef1ba1028..f3d58afc0d 100644
--- a/lib/math.in.h
+++ b/lib/math.in.h
@@ -1,6 +1,6 @@
 /* A GNU-like <math.h>.
 
-   Copyright (C) 2002-2003, 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002-2003, 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/mbchar.c b/lib/mbchar.c
index 3d05f43b15..7d5f72c9c5 100644
--- a/lib/mbchar.c
+++ b/lib/mbchar.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2001, 2006, 2009-2022 Free Software Foundation, Inc.
+/* Copyright (C) 2001, 2006, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/mbchar.h b/lib/mbchar.h
index 5ca8df61fe..65050c023b 100644
--- a/lib/mbchar.h
+++ b/lib/mbchar.h
@@ -1,5 +1,5 @@
 /* Multibyte character data type.
-   Copyright (C) 2001, 2005-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001, 2005-2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/mbfile.c b/lib/mbfile.c
index 7498ac58c2..8d2957b5eb 100644
--- a/lib/mbfile.c
+++ b/lib/mbfile.c
@@ -1,5 +1,5 @@
 /* Multibyte character I/O: macros for multi-byte encodings.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/mbfile.h b/lib/mbfile.h
index 89bfc3e746..faf95f4be7 100644
--- a/lib/mbfile.h
+++ b/lib/mbfile.h
@@ -1,5 +1,5 @@
 /* Multibyte character I/O: macros for multi-byte encodings.
-   Copyright (C) 2001, 2005, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001, 2005, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/mbiter.c b/lib/mbiter.c
index af7e91b964..530181aa50 100644
--- a/lib/mbiter.c
+++ b/lib/mbiter.c
@@ -1,6 +1,6 @@
 /* Iterating through multibyte strings: macros for multi-byte encodings.
 
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/mbiter.h b/lib/mbiter.h
index f30a5406bb..ce901932f1 100644
--- a/lib/mbiter.h
+++ b/lib/mbiter.h
@@ -1,5 +1,5 @@
 /* Iterating through multibyte strings: macros for multi-byte encodings.
-   Copyright (C) 2001, 2005, 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001, 2005, 2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/mbmemcasecmp.c b/lib/mbmemcasecmp.c
index 335d1eb99a..d79879866d 100644
--- a/lib/mbmemcasecmp.c
+++ b/lib/mbmemcasecmp.c
@@ -1,5 +1,5 @@
 /* Compare two memory areas with possibly different lengths, case-insensitive.
-   Copyright (C) 1998-1999, 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 1998-1999, 2005-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009,
    based on earlier glibc code.
 
diff --git a/lib/mbmemcasecmp.h b/lib/mbmemcasecmp.h
index 1377512179..a9c8a16b5e 100644
--- a/lib/mbmemcasecmp.h
+++ b/lib/mbmemcasecmp.h
@@ -1,5 +1,5 @@
 /* Compare two memory areas with possibly different lengths, case-insensitive.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify it
    under the terms of the GNU Lesser General Public License as published
diff --git a/lib/mbmemcasecoll.c b/lib/mbmemcasecoll.c
index 760a828f4a..552dbbbd72 100644
--- a/lib/mbmemcasecoll.c
+++ b/lib/mbmemcasecoll.c
@@ -1,5 +1,5 @@
 /* Locale-specific case-ignoring memory comparison.
-   Copyright (C) 2001, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2001.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/mbmemcasecoll.h b/lib/mbmemcasecoll.h
index 50f0040f17..6c2dd02ac9 100644
--- a/lib/mbmemcasecoll.h
+++ b/lib/mbmemcasecoll.h
@@ -1,5 +1,5 @@
 /* Locale-specific case-ignoring memory comparison.
-   Copyright (C) 2001, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published
diff --git a/lib/mbrlen.c b/lib/mbrlen.c
index 2214f9afdc..46c7161a75 100644
--- a/lib/mbrlen.c
+++ b/lib/mbrlen.c
@@ -1,5 +1,5 @@
 /* Recognize multibyte character.
-   Copyright (C) 1999-2000, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999-2000, 2008-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2008.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/mbrtoc32.c b/lib/mbrtoc32.c
index 8f8095295d..6c711678ce 100644
--- a/lib/mbrtoc32.c
+++ b/lib/mbrtoc32.c
@@ -1,5 +1,5 @@
 /* Convert multibyte character to 32-bit wide character.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/mbrtowc-impl-utf8.h b/lib/mbrtowc-impl-utf8.h
index 8e5ac14ea4..4fdd65d847 100644
--- a/lib/mbrtowc-impl-utf8.h
+++ b/lib/mbrtowc-impl-utf8.h
@@ -1,5 +1,5 @@
 /* Convert multibyte character to wide character.
-   Copyright (C) 1999-2002, 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999-2002, 2005-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/mbrtowc-impl.h b/lib/mbrtowc-impl.h
index 65538e7449..e9c04ed776 100644
--- a/lib/mbrtowc-impl.h
+++ b/lib/mbrtowc-impl.h
@@ -1,5 +1,5 @@
 /* Convert multibyte character to wide character.
-   Copyright (C) 1999-2002, 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999-2002, 2005-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/mbrtowc.c b/lib/mbrtowc.c
index be6fdc6478..c1a689a270 100644
--- a/lib/mbrtowc.c
+++ b/lib/mbrtowc.c
@@ -1,5 +1,5 @@
 /* Convert multibyte character to wide character.
-   Copyright (C) 1999-2002, 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999-2002, 2005-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2008.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/mbscasecmp.c b/lib/mbscasecmp.c
index 4fe564c14b..03292a5cd7 100644
--- a/lib/mbscasecmp.c
+++ b/lib/mbscasecmp.c
@@ -1,5 +1,5 @@
 /* Case-insensitive string comparison function.
-   Copyright (C) 1998-1999, 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 1998-1999, 2005-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2005,
    based on earlier glibc code.
 
diff --git a/lib/mbscasestr.c b/lib/mbscasestr.c
index e5b3263eb3..d92b847ba7 100644
--- a/lib/mbscasestr.c
+++ b/lib/mbscasestr.c
@@ -1,5 +1,5 @@
 /* Case-insensitive searching in a string.  -*- coding: utf-8 -*-
-   Copyright (C) 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2005.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/mbschr.c b/lib/mbschr.c
index 05b3926f59..81323b4f9d 100644
--- a/lib/mbschr.c
+++ b/lib/mbschr.c
@@ -1,5 +1,5 @@
 /* Searching a string for a character.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2007.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/mbscspn.c b/lib/mbscspn.c
index 7d771ccc19..9cb0f451ba 100644
--- a/lib/mbscspn.c
+++ b/lib/mbscspn.c
@@ -1,5 +1,5 @@
 /* Searching a string for a character among a given set of characters.
-   Copyright (C) 1999, 2002, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2007.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/mbsinit.c b/lib/mbsinit.c
index 2324f15680..6e600798d1 100644
--- a/lib/mbsinit.c
+++ b/lib/mbsinit.c
@@ -1,5 +1,5 @@
 /* Test for initial conversion state.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2008.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/mbslen.c b/lib/mbslen.c
index f427017034..54c20be02f 100644
--- a/lib/mbslen.c
+++ b/lib/mbslen.c
@@ -1,5 +1,5 @@
 /* Counting the multibyte characters in a string.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2007.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/mbsncasecmp.c b/lib/mbsncasecmp.c
index 59077471f3..b2dcb81417 100644
--- a/lib/mbsncasecmp.c
+++ b/lib/mbsncasecmp.c
@@ -1,5 +1,5 @@
 /* Case-insensitive string comparison function.
-   Copyright (C) 1998-1999, 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 1998-1999, 2005-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2005,
    based on earlier glibc code.
 
diff --git a/lib/mbsnlen.c b/lib/mbsnlen.c
index c6ea1fef21..0a48ea93a0 100644
--- a/lib/mbsnlen.c
+++ b/lib/mbsnlen.c
@@ -1,5 +1,5 @@
 /* Counting the multibyte characters in a string.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2007.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/mbsnrtoc32s.c b/lib/mbsnrtoc32s.c
index 391baee449..f2e2248f66 100644
--- a/lib/mbsnrtoc32s.c
+++ b/lib/mbsnrtoc32s.c
@@ -1,5 +1,5 @@
 /* Convert string to 32-bit wide string.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2020.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/mbsnrtowcs-impl.h b/lib/mbsnrtowcs-impl.h
index 31dccabb2f..7d94e24eb6 100644
--- a/lib/mbsnrtowcs-impl.h
+++ b/lib/mbsnrtowcs-impl.h
@@ -1,5 +1,5 @@
 /* Convert string to wide string.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2008.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/mbsnrtowcs.c b/lib/mbsnrtowcs.c
index 4561563e22..b5d311d292 100644
--- a/lib/mbsnrtowcs.c
+++ b/lib/mbsnrtowcs.c
@@ -1,5 +1,5 @@
 /* Convert string to wide string.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2008.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/mbspbrk.c b/lib/mbspbrk.c
index d2d01d8697..6132ec1489 100644
--- a/lib/mbspbrk.c
+++ b/lib/mbspbrk.c
@@ -1,5 +1,5 @@
 /* Searching a string for a character among a given set of characters.
-   Copyright (C) 1999, 2002, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2007.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/mbspcasecmp.c b/lib/mbspcasecmp.c
index 4ccaeb9621..403d4ebb79 100644
--- a/lib/mbspcasecmp.c
+++ b/lib/mbspcasecmp.c
@@ -1,5 +1,5 @@
 /* Case-insensitive string comparison function.
-   Copyright (C) 1998-1999, 2005-2008, 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 1998-1999, 2005-2008, 2010-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2007.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/mbsrchr.c b/lib/mbsrchr.c
index e01034ebe6..a00b608fc8 100644
--- a/lib/mbsrchr.c
+++ b/lib/mbsrchr.c
@@ -1,5 +1,5 @@
 /* Searching a string for the last occurrence of a character.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2007.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/mbsrtoc32s-state.c b/lib/mbsrtoc32s-state.c
index fa1dda0625..91a18fdd74 100644
--- a/lib/mbsrtoc32s-state.c
+++ b/lib/mbsrtoc32s-state.c
@@ -1,5 +1,5 @@
 /* Convert string to 32-bit wide string.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2020.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/mbsrtoc32s.c b/lib/mbsrtoc32s.c
index 1cd0dd0ad1..a400b5851a 100644
--- a/lib/mbsrtoc32s.c
+++ b/lib/mbsrtoc32s.c
@@ -1,5 +1,5 @@
 /* Convert string to 32-bit wide string.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2020.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/mbsrtowcs-impl.h b/lib/mbsrtowcs-impl.h
index 55dafe380a..bcf729dcb9 100644
--- a/lib/mbsrtowcs-impl.h
+++ b/lib/mbsrtowcs-impl.h
@@ -1,5 +1,5 @@
 /* Convert string to wide string.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2008.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/mbsrtowcs-state.c b/lib/mbsrtowcs-state.c
index 55160a20d8..0949a370c8 100644
--- a/lib/mbsrtowcs-state.c
+++ b/lib/mbsrtowcs-state.c
@@ -1,5 +1,5 @@
 /* Convert string to wide string.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2008.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/mbsrtowcs.c b/lib/mbsrtowcs.c
index 66019b04b1..c20fc416bd 100644
--- a/lib/mbsrtowcs.c
+++ b/lib/mbsrtowcs.c
@@ -1,5 +1,5 @@
 /* Convert string to wide string.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2008.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/mbssep.c b/lib/mbssep.c
index 48e3357b50..6158b55562 100644
--- a/lib/mbssep.c
+++ b/lib/mbssep.c
@@ -1,5 +1,5 @@
 /* Tokenizing a string.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2007.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/mbsspn.c b/lib/mbsspn.c
index 26389c2c70..ee41181f7d 100644
--- a/lib/mbsspn.c
+++ b/lib/mbsspn.c
@@ -1,5 +1,5 @@
 /* Searching a string for a character outside a given set of characters.
-   Copyright (C) 1999, 2002, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2007.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/mbsstr.c b/lib/mbsstr.c
index ff7ff17d76..03fb7045e3 100644
--- a/lib/mbsstr.c
+++ b/lib/mbsstr.c
@@ -1,5 +1,5 @@
 /* Searching in a string.  -*- coding: utf-8 -*-
-   Copyright (C) 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2005.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/mbstoc32s.c b/lib/mbstoc32s.c
index 121e535e8d..24564152dc 100644
--- a/lib/mbstoc32s.c
+++ b/lib/mbstoc32s.c
@@ -1,5 +1,5 @@
 /* Convert string to 32-bit wide string.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2020.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/mbstok_r.c b/lib/mbstok_r.c
index 96747e9e2a..86a016c593 100644
--- a/lib/mbstok_r.c
+++ b/lib/mbstok_r.c
@@ -1,5 +1,5 @@
 /* Tokenizing a string.
-   Copyright (C) 1999, 2002, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2007.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/mbswidth.c b/lib/mbswidth.c
index 98a5b94ae1..ca0a47d16f 100644
--- a/lib/mbswidth.c
+++ b/lib/mbswidth.c
@@ -1,5 +1,5 @@
 /* Determine the number of screen columns needed for a string.
-   Copyright (C) 2000-2022 Free Software Foundation, Inc.
+   Copyright (C) 2000-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/mbswidth.h b/lib/mbswidth.h
index e43329792c..5e4fc15b83 100644
--- a/lib/mbswidth.h
+++ b/lib/mbswidth.h
@@ -1,5 +1,5 @@
 /* Determine the number of screen columns needed for a string.
-   Copyright (C) 2000-2004, 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2000-2004, 2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/mbtowc-impl.h b/lib/mbtowc-impl.h
index 2b27bafd62..39b977bebc 100644
--- a/lib/mbtowc-impl.h
+++ b/lib/mbtowc-impl.h
@@ -1,5 +1,5 @@
 /* Convert multibyte character to wide character.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/mbtowc-lock.c b/lib/mbtowc-lock.c
index 06d32246d5..6ca6e10f94 100644
--- a/lib/mbtowc-lock.c
+++ b/lib/mbtowc-lock.c
@@ -1,5 +1,5 @@
 /* Return the internal lock used by mbrtowc and mbrtoc32.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/mbtowc-lock.h b/lib/mbtowc-lock.h
index ecfd44e8de..2dc22ace72 100644
--- a/lib/mbtowc-lock.h
+++ b/lib/mbtowc-lock.h
@@ -1,5 +1,5 @@
 /* Use the internal lock used by mbrtowc and mbrtoc32.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/mbtowc.c b/lib/mbtowc.c
index a9a7995109..8d9b06d247 100644
--- a/lib/mbtowc.c
+++ b/lib/mbtowc.c
@@ -1,5 +1,5 @@
 /* Convert multibyte character to wide character.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/mbuiter.c b/lib/mbuiter.c
index 1f3288bd60..58dea24b2e 100644
--- a/lib/mbuiter.c
+++ b/lib/mbuiter.c
@@ -1,5 +1,5 @@
 /* Iterating through multibyte strings: macros for multi-byte encodings.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/mbuiter.h b/lib/mbuiter.h
index 1a48fcfa5c..fc1b9dbb32 100644
--- a/lib/mbuiter.h
+++ b/lib/mbuiter.h
@@ -1,5 +1,5 @@
 /* Iterating through multibyte strings: macros for multi-byte encodings.
-   Copyright (C) 2001, 2005, 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001, 2005, 2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/md2-stream.c b/lib/md2-stream.c
index 89b1fc5209..c3118928f5 100644
--- a/lib/md2-stream.c
+++ b/lib/md2-stream.c
@@ -1,6 +1,6 @@
 /* Functions to compute MD2 message digest of files or memory blocks.
    according to the definition of MD2 in RFC 1319 from April 1992.
-   Copyright (C) 1995-1997, 1999-2003, 2005-2006, 2008-2022 Free Software
+   Copyright (C) 1995-1997, 1999-2003, 2005-2006, 2008-2023 Free Software
    Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/md2.c b/lib/md2.c
index 8ca535c661..29afdba41b 100644
--- a/lib/md2.c
+++ b/lib/md2.c
@@ -1,6 +1,6 @@
 /* Functions to compute MD2 message digest of files or memory blocks.
    according to the definition of MD2 in RFC 1319 from April 1992.
-   Copyright (C) 1995-1997, 1999-2003, 2005-2006, 2008-2022 Free Software
+   Copyright (C) 1995-1997, 1999-2003, 2005-2006, 2008-2023 Free Software
    Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/md2.h b/lib/md2.h
index 92cbc4641a..00cfeda512 100644
--- a/lib/md2.h
+++ b/lib/md2.h
@@ -1,6 +1,6 @@
 /* Declarations of functions and data types used for MD2 sum
    library functions.
-   Copyright (C) 2000-2001, 2003, 2005, 2008-2022 Free Software Foundation,
+   Copyright (C) 2000-2001, 2003, 2005, 2008-2023 Free Software Foundation,
    Inc.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/md4-stream.c b/lib/md4-stream.c
index 8eae081077..16694f8222 100644
--- a/lib/md4-stream.c
+++ b/lib/md4-stream.c
@@ -1,6 +1,6 @@
 /* Functions to compute MD4 message digest of files or memory blocks.
    according to the definition of MD4 in RFC 1320 from April 1992.
-   Copyright (C) 1995-1997, 1999-2003, 2005-2006, 2008-2022 Free Software
+   Copyright (C) 1995-1997, 1999-2003, 2005-2006, 2008-2023 Free Software
    Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/md4.c b/lib/md4.c
index aebd39c6c4..2dea37b423 100644
--- a/lib/md4.c
+++ b/lib/md4.c
@@ -1,6 +1,6 @@
 /* Functions to compute MD4 message digest of files or memory blocks.
    according to the definition of MD4 in RFC 1320 from April 1992.
-   Copyright (C) 1995-1997, 1999-2003, 2005-2006, 2008-2022 Free Software
+   Copyright (C) 1995-1997, 1999-2003, 2005-2006, 2008-2023 Free Software
    Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/md4.h b/lib/md4.h
index 356a0dc5cd..66a08857fc 100644
--- a/lib/md4.h
+++ b/lib/md4.h
@@ -1,6 +1,6 @@
 /* Declarations of functions and data types used for MD4 sum
    library functions.
-   Copyright (C) 2000-2001, 2003, 2005, 2008-2022 Free Software Foundation,
+   Copyright (C) 2000-2001, 2003, 2005, 2008-2023 Free Software Foundation,
    Inc.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/md5-stream.c b/lib/md5-stream.c
index 07c639fd36..ba76792cbb 100644
--- a/lib/md5-stream.c
+++ b/lib/md5-stream.c
@@ -1,6 +1,6 @@
 /* Functions to compute MD5 message digest of files or memory blocks.
    according to the definition of MD5 in RFC 1321 from April 1992.
-   Copyright (C) 1995-1997, 1999-2001, 2005-2006, 2008-2022 Free Software
+   Copyright (C) 1995-1997, 1999-2001, 2005-2006, 2008-2023 Free Software
    Foundation, Inc.
    This file is part of the GNU C Library.
 
diff --git a/lib/md5.c b/lib/md5.c
index c16ac4a93a..4a6accf28f 100644
--- a/lib/md5.c
+++ b/lib/md5.c
@@ -1,6 +1,6 @@
 /* Functions to compute MD5 message digest of files or memory blocks.
    according to the definition of MD5 in RFC 1321 from April 1992.
-   Copyright (C) 1995-1997, 1999-2001, 2005-2006, 2008-2022 Free Software
+   Copyright (C) 1995-1997, 1999-2001, 2005-2006, 2008-2023 Free Software
    Foundation, Inc.
    This file is part of the GNU C Library.
 
diff --git a/lib/md5.h b/lib/md5.h
index 611c230b81..f34e7cb8df 100644
--- a/lib/md5.h
+++ b/lib/md5.h
@@ -1,6 +1,6 @@
 /* Declaration of functions and data types used for MD5 sum computing
    library functions.
-   Copyright (C) 1995-1997, 1999-2001, 2004-2006, 2008-2022 Free Software
+   Copyright (C) 1995-1997, 1999-2001, 2004-2006, 2008-2023 Free Software
    Foundation, Inc.
    This file is part of the GNU C Library.
 
diff --git a/lib/memalign.c b/lib/memalign.c
index 388f0ef2a2..c21942c46c 100644
--- a/lib/memalign.c
+++ b/lib/memalign.c
@@ -1,5 +1,5 @@
 /* Allocate memory with indefinite extent and specified alignment.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/memcasecmp.c b/lib/memcasecmp.c
index 6e02c25e8f..cc704e48f0 100644
--- a/lib/memcasecmp.c
+++ b/lib/memcasecmp.c
@@ -1,5 +1,5 @@
 /* Case-insensitive buffer comparator.
-   Copyright (C) 1996-1997, 2000, 2003, 2006, 2009-2022 Free Software
+   Copyright (C) 1996-1997, 2000, 2003, 2006, 2009-2023 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/memcasecmp.h b/lib/memcasecmp.h
index ea679d73c0..d8732401df 100644
--- a/lib/memcasecmp.h
+++ b/lib/memcasecmp.h
@@ -1,6 +1,6 @@
 /* Case-insensitive buffer comparator.
 
-   Copyright (C) 1996, 1998, 2003, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1996, 1998, 2003, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/memchr.c b/lib/memchr.c
index 0ca7b30a4d..8e9557937e 100644
--- a/lib/memchr.c
+++ b/lib/memchr.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991, 1993, 1996-1997, 1999-2000, 2003-2004, 2006, 2008-2022
+/* Copyright (C) 1991, 1993, 1996-1997, 1999-2000, 2003-2004, 2006, 2008-2023
    Free Software Foundation, Inc.
 
    Based on strlen implementation by Torbjorn Granlund (tege@sics.se),
diff --git a/lib/memchr.valgrind b/lib/memchr.valgrind
index cb0f351cc5..97690f2c50 100644
--- a/lib/memchr.valgrind
+++ b/lib/memchr.valgrind
@@ -1,6 +1,6 @@
 # Suppress a valgrind message about use of uninitialized memory in memchr().
 
-# Copyright (C) 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2009-2023 Free Software Foundation, Inc.
 #
 # This file is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Lesser General Public License as
diff --git a/lib/memchr2.c b/lib/memchr2.c
index ef833df88f..1ec53dbe94 100644
--- a/lib/memchr2.c
+++ b/lib/memchr2.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991, 1993, 1996-1997, 1999-2000, 2003-2004, 2006, 2008-2022
+/* Copyright (C) 1991, 1993, 1996-1997, 1999-2000, 2003-2004, 2006, 2008-2023
    Free Software Foundation, Inc.
 
    Based on strlen implementation by Torbjorn Granlund (tege@sics.se),
diff --git a/lib/memchr2.h b/lib/memchr2.h
index 2fb804792e..51d8e7bbcf 100644
--- a/lib/memchr2.h
+++ b/lib/memchr2.h
@@ -1,5 +1,5 @@
 /* Scan memory for the first of two bytes.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/memchr2.valgrind b/lib/memchr2.valgrind
index e0776d12b4..3f2497988e 100644
--- a/lib/memchr2.valgrind
+++ b/lib/memchr2.valgrind
@@ -1,6 +1,6 @@
 # Suppress a valgrind message about use of uninitialized memory in memchr2().
 
-# Copyright (C) 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2009-2023 Free Software Foundation, Inc.
 #
 # This file is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Lesser General Public License as
diff --git a/lib/memcmp.c b/lib/memcmp.c
index cc320b514d..10cfb30a08 100644
--- a/lib/memcmp.c
+++ b/lib/memcmp.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991, 1993, 1995, 1997-1998, 2003, 2006, 2009-2022 Free
+/* Copyright (C) 1991, 1993, 1995, 1997-1998, 2003, 2006, 2009-2023 Free
    Software Foundation, Inc.
 
    Contributed by Torbjorn Granlund (tege@sics.se).
diff --git a/lib/memcmp2.c b/lib/memcmp2.c
index 5780596815..70ffd4a670 100644
--- a/lib/memcmp2.c
+++ b/lib/memcmp2.c
@@ -1,5 +1,5 @@
 /* Compare two memory areas with possibly different lengths.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/memcmp2.h b/lib/memcmp2.h
index 1a3c342dd5..abcf3e7650 100644
--- a/lib/memcmp2.h
+++ b/lib/memcmp2.h
@@ -1,5 +1,5 @@
 /* Compare two memory areas with possibly different lengths.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/memcoll.c b/lib/memcoll.c
index 87bd0c378f..82aee31f75 100644
--- a/lib/memcoll.c
+++ b/lib/memcoll.c
@@ -1,6 +1,6 @@
 /* Locale-specific memory comparison.
 
-   Copyright (C) 1999, 2002-2004, 2006, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002-2004, 2006, 2009-2023 Free Software Foundation,
    Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/memcoll.h b/lib/memcoll.h
index 191daa910d..b54b5501dc 100644
--- a/lib/memcoll.h
+++ b/lib/memcoll.h
@@ -1,6 +1,6 @@
 /* Locale-specific memory comparison.
 
-   Copyright (C) 1999, 2003, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2003, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/memcpy.c b/lib/memcpy.c
index 2fbbaae26f..8ac7a73952 100644
--- a/lib/memcpy.c
+++ b/lib/memcpy.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1995, 1997, 2000, 2003, 2006, 2009-2022 Free Software
+/* Copyright (C) 1995, 1997, 2000, 2003, 2006, 2009-2023 Free Software
  * Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/memmem.c b/lib/memmem.c
index 5701052d48..c0b48c1b25 100644
--- a/lib/memmem.c
+++ b/lib/memmem.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991-1994, 1996-1998, 2000, 2004, 2007-2022 Free Software
+/* Copyright (C) 1991-1994, 1996-1998, 2000, 2004, 2007-2023 Free Software
    Foundation, Inc.
    This file is part of the GNU C Library.
 
diff --git a/lib/mempcpy.c b/lib/mempcpy.c
index 9aae418ef2..24a3135988 100644
--- a/lib/mempcpy.c
+++ b/lib/mempcpy.c
@@ -1,5 +1,5 @@
 /* Copy memory area and return pointer after last written byte.
-   Copyright (C) 2003, 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2003, 2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/memrchr.c b/lib/memrchr.c
index 90fdb86f1f..c5b1fe8b2e 100644
--- a/lib/memrchr.c
+++ b/lib/memrchr.c
@@ -1,6 +1,6 @@
 /* memrchr -- find the last occurrence of a byte in a memory block
 
-   Copyright (C) 1991, 1993, 1996-1997, 1999-2000, 2003-2022 Free Software
+   Copyright (C) 1991, 1993, 1996-1997, 1999-2000, 2003-2023 Free Software
    Foundation, Inc.
 
    Based on strlen implementation by Torbjorn Granlund (tege@sics.se),
diff --git a/lib/memset.c b/lib/memset.c
index 75cf10958c..ce09fd6d74 100644
--- a/lib/memset.c
+++ b/lib/memset.c
@@ -1,5 +1,5 @@
 /* memset.c -- set an area of memory to a given value
-   Copyright (C) 1991, 2003, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1991, 2003, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/memset_explicit.c b/lib/memset_explicit.c
index eabeb3ec2b..6d21a5e879 100644
--- a/lib/memset_explicit.c
+++ b/lib/memset_explicit.c
@@ -1,5 +1,5 @@
 /* Erase sensitive data from memory.
-   Copyright 2022 Free Software Foundation, Inc.
+   Copyright 2022-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/memxor.c b/lib/memxor.c
index 34c8f8a611..bae5374b3c 100644
--- a/lib/memxor.c
+++ b/lib/memxor.c
@@ -1,5 +1,5 @@
 /* Binary exclusive OR operation of two memory blocks.  -*- coding: utf-8 -*-
-   Copyright (C) 2005-2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2006, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/memxor.h b/lib/memxor.h
index 8ba3429f2f..fbe970b871 100644
--- a/lib/memxor.h
+++ b/lib/memxor.h
@@ -1,5 +1,5 @@
 /* memxor.h -- perform binary exclusive OR operation on memory blocks.
-   Copyright (C) 2005, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/mgetgroups.c b/lib/mgetgroups.c
index 12e08bc1ac..fdf9d5967a 100644
--- a/lib/mgetgroups.c
+++ b/lib/mgetgroups.c
@@ -1,6 +1,6 @@
 /* mgetgroups.c -- return a list of the groups a user or current process is in
 
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/mgetgroups.h b/lib/mgetgroups.h
index 97e10963b7..fcaa3a7180 100644
--- a/lib/mgetgroups.h
+++ b/lib/mgetgroups.h
@@ -1,5 +1,5 @@
 /* Get a list of all group IDs associated with a specified user ID.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/mini-gmp-gnulib.c b/lib/mini-gmp-gnulib.c
index 7d09c80e9e..b15ce0ff75 100644
--- a/lib/mini-gmp-gnulib.c
+++ b/lib/mini-gmp-gnulib.c
@@ -1,6 +1,6 @@
 /* Tailor mini-gmp.c for Gnulib-using applications.
 
-   Copyright 2018-2022 Free Software Foundation, Inc.
+   Copyright 2018-2023 Free Software Foundation, Inc.
 
    This file is free software.
    It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
diff --git a/lib/minmax.h b/lib/minmax.h
index b4b1345bbc..1fbfc6616c 100644
--- a/lib/minmax.h
+++ b/lib/minmax.h
@@ -1,5 +1,5 @@
 /* MIN, MAX macros.
-   Copyright (C) 1995, 1998, 2001, 2003, 2005, 2009-2022 Free Software
+   Copyright (C) 1995, 1998, 2001, 2003, 2005, 2009-2023 Free Software
    Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/mkancesdirs.c b/lib/mkancesdirs.c
index b66a9d235a..5bd3fe7b0e 100644
--- a/lib/mkancesdirs.c
+++ b/lib/mkancesdirs.c
@@ -1,6 +1,6 @@
 /* Make a file's ancestor directories.
 
-   Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/mkancesdirs.h b/lib/mkancesdirs.h
index 34242f3689..58cc91a3b8 100644
--- a/lib/mkancesdirs.h
+++ b/lib/mkancesdirs.h
@@ -1,5 +1,5 @@
 /* Ensure the existence of the ancestor directories of a file.
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/mkdir-p.c b/lib/mkdir-p.c
index 00651e93d3..67e9050ad6 100644
--- a/lib/mkdir-p.c
+++ b/lib/mkdir-p.c
@@ -1,6 +1,6 @@
 /* mkdir-p.c -- Ensure that a directory and its parents exist.
 
-   Copyright (C) 1990, 1997-2000, 2002-2007, 2009-2022 Free Software
+   Copyright (C) 1990, 1997-2000, 2002-2007, 2009-2023 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/mkdir-p.h b/lib/mkdir-p.h
index 90bd59f37d..28451ea2ce 100644
--- a/lib/mkdir-p.h
+++ b/lib/mkdir-p.h
@@ -1,6 +1,6 @@
 /* mkdir-p.h -- Ensure that a directory and its parents exist.
 
-   Copyright (C) 1994-1997, 2000, 2003-2006, 2009-2022 Free Software
+   Copyright (C) 1994-1997, 2000, 2003-2006, 2009-2023 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/mkdir.c b/lib/mkdir.c
index 4901701813..f94aba173b 100644
--- a/lib/mkdir.c
+++ b/lib/mkdir.c
@@ -1,7 +1,7 @@
 /* On some systems, mkdir ("foo/", 0700) fails because of the trailing
    slash.  On those systems, this wrapper removes the trailing slash.
 
-   Copyright (C) 2001, 2003, 2006, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001, 2003, 2006, 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/mkdirat.c b/lib/mkdirat.c
index 7c5a97cc90..df4494ed7d 100644
--- a/lib/mkdirat.c
+++ b/lib/mkdirat.c
@@ -1,5 +1,5 @@
 /* fd-relative mkdir
-   Copyright (C) 2005-2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2006, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/mkdtemp.c b/lib/mkdtemp.c
index 0577870d3f..115bb6bf2e 100644
--- a/lib/mkdtemp.c
+++ b/lib/mkdtemp.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1999, 2001-2003, 2006-2007, 2009-2022 Free Software
+/* Copyright (C) 1999, 2001-2003, 2006-2007, 2009-2023 Free Software
    Foundation, Inc.
    This file is part of the GNU C Library.
 
diff --git a/lib/mkfifo.c b/lib/mkfifo.c
index 784cc423a3..5ad81030e8 100644
--- a/lib/mkfifo.c
+++ b/lib/mkfifo.c
@@ -1,5 +1,5 @@
 /* Create a named fifo.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/mkfifoat.c b/lib/mkfifoat.c
index 1208d6053f..23243e8cf8 100644
--- a/lib/mkfifoat.c
+++ b/lib/mkfifoat.c
@@ -1,5 +1,5 @@
 /* Create a named fifo relative to an open directory.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/mknod.c b/lib/mknod.c
index 3627ee3a12..688f0fb664 100644
--- a/lib/mknod.c
+++ b/lib/mknod.c
@@ -1,5 +1,5 @@
 /* Create a device inode.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/mknodat.c b/lib/mknodat.c
index 01096d5b01..3ed38e159c 100644
--- a/lib/mknodat.c
+++ b/lib/mknodat.c
@@ -1,5 +1,5 @@
 /* Create an inode relative to an open directory.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/mkostemp.c b/lib/mkostemp.c
index eae289aff9..5cd5b3ac58 100644
--- a/lib/mkostemp.c
+++ b/lib/mkostemp.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1998-1999, 2001, 2005-2007, 2009-2022 Free Software
+/* Copyright (C) 1998-1999, 2001, 2005-2007, 2009-2023 Free Software
    Foundation, Inc.
    This file is derived from the one in the GNU C Library.
 
diff --git a/lib/mkostemps.c b/lib/mkostemps.c
index 733c187c5c..7ad149d8d7 100644
--- a/lib/mkostemps.c
+++ b/lib/mkostemps.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1998-1999, 2001, 2005-2007, 2009-2022 Free Software
+/* Copyright (C) 1998-1999, 2001, 2005-2007, 2009-2023 Free Software
    Foundation, Inc.
    This file is derived from the one in the GNU C Library.
 
diff --git a/lib/mkstemp-safer.c b/lib/mkstemp-safer.c
index 47b4d8bd69..e319fcc591 100644
--- a/lib/mkstemp-safer.c
+++ b/lib/mkstemp-safer.c
@@ -1,6 +1,6 @@
 /* Invoke mkstemp, but avoid some glitches.
 
-   Copyright (C) 2005-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/mkstemp.c b/lib/mkstemp.c
index 7e0a214ff7..77aadbbdc2 100644
--- a/lib/mkstemp.c
+++ b/lib/mkstemp.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1998-1999, 2001, 2005-2007, 2009-2022 Free Software
+/* Copyright (C) 1998-1999, 2001, 2005-2007, 2009-2023 Free Software
    Foundation, Inc.
    This file is derived from the one in the GNU C Library.
 
diff --git a/lib/mkstemps.c b/lib/mkstemps.c
index b11161db06..235e70c23b 100644
--- a/lib/mkstemps.c
+++ b/lib/mkstemps.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1998-1999, 2001, 2005-2007, 2009-2022 Free Software
+/* Copyright (C) 1998-1999, 2001, 2005-2007, 2009-2023 Free Software
    Foundation, Inc.
    This file is derived from the one in the GNU C Library.
 
diff --git a/lib/modechange.c b/lib/modechange.c
index 6d34acc657..42dacabd37 100644
--- a/lib/modechange.c
+++ b/lib/modechange.c
@@ -1,6 +1,6 @@
 /* modechange.c -- file mode manipulation
 
-   Copyright (C) 1989-1990, 1997-1999, 2001, 2003-2006, 2009-2022 Free Software
+   Copyright (C) 1989-1990, 1997-1999, 2001, 2003-2006, 2009-2023 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/modechange.h b/lib/modechange.h
index d1bcd8f13e..cd613c8555 100644
--- a/lib/modechange.h
+++ b/lib/modechange.h
@@ -1,6 +1,6 @@
 /* modechange.h -- definitions for file mode manipulation
 
-   Copyright (C) 1989-1990, 1997, 2003-2006, 2009-2022 Free Software
+   Copyright (C) 1989-1990, 1997, 2003-2006, 2009-2023 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/modf.c b/lib/modf.c
index 2dab1e2916..1a9ee93045 100644
--- a/lib/modf.c
+++ b/lib/modf.c
@@ -1,5 +1,5 @@
 /* Get signed integer and fractional parts of a floating-point number.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/modff.c b/lib/modff.c
index 40775494a9..0b99a86e2c 100644
--- a/lib/modff.c
+++ b/lib/modff.c
@@ -1,5 +1,5 @@
 /* Get signed integer and fractional parts of a floating-point number.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/modfl.c b/lib/modfl.c
index 308935afde..d7baf2dd8f 100644
--- a/lib/modfl.c
+++ b/lib/modfl.c
@@ -1,5 +1,5 @@
 /* Get signed integer and fractional parts of a floating-point number.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/monetary.in.h b/lib/monetary.in.h
index 3c9012c114..255958d2d8 100644
--- a/lib/monetary.in.h
+++ b/lib/monetary.in.h
@@ -1,5 +1,5 @@
 /* Wrapper around <monetary.h>.
-   Copyright (C) 2017-2022 Free Software Foundation, Inc.
+   Copyright (C) 2017-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/mountlist.c b/lib/mountlist.c
index fac5c45e58..6d38481284 100644
--- a/lib/mountlist.c
+++ b/lib/mountlist.c
@@ -1,6 +1,6 @@
 /* mountlist.c -- return a list of mounted file systems
 
-   Copyright (C) 1991-1992, 1997-2022 Free Software Foundation, Inc.
+   Copyright (C) 1991-1992, 1997-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/mountlist.h b/lib/mountlist.h
index e24ebbe0dc..aed7f8877f 100644
--- a/lib/mountlist.h
+++ b/lib/mountlist.h
@@ -1,6 +1,6 @@
 /* mountlist.h -- declarations for list of mounted file systems
 
-   Copyright (C) 1991-1992, 1998, 2000-2005, 2009-2022 Free Software
+   Copyright (C) 1991-1992, 1998, 2000-2005, 2009-2023 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/mpsort.c b/lib/mpsort.c
index 459a63c550..32cc5e1f82 100644
--- a/lib/mpsort.c
+++ b/lib/mpsort.c
@@ -1,6 +1,6 @@
 /* Sort a vector of pointers to data.
 
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/mpsort.h b/lib/mpsort.h
index e255ad8a86..520d2ddb2f 100644
--- a/lib/mpsort.h
+++ b/lib/mpsort.h
@@ -1,6 +1,6 @@
 /* Sort a vector of pointers to data.
 
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published
diff --git a/lib/msvc-inval.c b/lib/msvc-inval.c
index d6651caa88..c5149a8fd6 100644
--- a/lib/msvc-inval.c
+++ b/lib/msvc-inval.c
@@ -1,5 +1,5 @@
 /* Invalid parameter handler for MSVC runtime libraries.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/msvc-inval.h b/lib/msvc-inval.h
index 1230b8994e..ed00461ff7 100644
--- a/lib/msvc-inval.h
+++ b/lib/msvc-inval.h
@@ -1,5 +1,5 @@
 /* Invalid parameter handler for MSVC runtime libraries.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/msvc-nothrow.c b/lib/msvc-nothrow.c
index aa069643fb..f729fe66f7 100644
--- a/lib/msvc-nothrow.c
+++ b/lib/msvc-nothrow.c
@@ -1,6 +1,6 @@
 /* Wrappers that don't throw invalid parameter notifications
    with MSVC runtime libraries.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/msvc-nothrow.h b/lib/msvc-nothrow.h
index 53451557ef..82d3f6a2df 100644
--- a/lib/msvc-nothrow.h
+++ b/lib/msvc-nothrow.h
@@ -1,6 +1,6 @@
 /* Wrappers that don't throw invalid parameter notifications
    with MSVC runtime libraries.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/mtx.c b/lib/mtx.c
index 1160fd6b41..fe15b69494 100644
--- a/lib/mtx.c
+++ b/lib/mtx.c
@@ -1,5 +1,5 @@
 /* ISO C 11 locking in multithreaded situations.
-   Copyright (C) 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/nanosleep.c b/lib/nanosleep.c
index 55d6fa650e..3f295f49b5 100644
--- a/lib/nanosleep.c
+++ b/lib/nanosleep.c
@@ -1,6 +1,6 @@
 /* Provide a replacement for the POSIX nanosleep function.
 
-   Copyright (C) 1999-2000, 2002, 2004-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999-2000, 2002, 2004-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/net_if.in.h b/lib/net_if.in.h
index 9088965c7f..ec720570e6 100644
--- a/lib/net_if.in.h
+++ b/lib/net_if.in.h
@@ -1,5 +1,5 @@
 /* Substitute for <net/if.h>.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/netdb.in.h b/lib/netdb.in.h
index e05cf4b137..9549cd7326 100644
--- a/lib/netdb.in.h
+++ b/lib/netdb.in.h
@@ -1,5 +1,5 @@
 /* Provide a netdb.h header file for systems lacking it (read: MinGW).
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
    Written by Simon Josefsson.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/netinet_in.in.h b/lib/netinet_in.in.h
index e23807cac7..f88923a3f1 100644
--- a/lib/netinet_in.in.h
+++ b/lib/netinet_in.in.h
@@ -1,5 +1,5 @@
 /* Substitute for <netinet/in.h>.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/nl_langinfo-lock.c b/lib/nl_langinfo-lock.c
index c36882d5c0..e5cdcd3e77 100644
--- a/lib/nl_langinfo-lock.c
+++ b/lib/nl_langinfo-lock.c
@@ -1,5 +1,5 @@
 /* Return the internal lock used by nl_langinfo.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/nl_langinfo.c b/lib/nl_langinfo.c
index 3fa4782231..131166fd71 100644
--- a/lib/nl_langinfo.c
+++ b/lib/nl_langinfo.c
@@ -1,6 +1,6 @@
 /* nl_langinfo() replacement: query locale dependent information.
 
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/nonblocking.c b/lib/nonblocking.c
index 9ea31f7d7f..3a8bb2aadc 100644
--- a/lib/nonblocking.c
+++ b/lib/nonblocking.c
@@ -1,5 +1,5 @@
 /* Non-blocking I/O for pipe or socket descriptors.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/nonblocking.h b/lib/nonblocking.h
index 0cb6f6a584..2bb2c27f07 100644
--- a/lib/nonblocking.h
+++ b/lib/nonblocking.h
@@ -1,5 +1,5 @@
 /* Non-blocking I/O for pipe or socket descriptors.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/noreturn.h b/lib/noreturn.h
index b0802725c5..31e665219d 100644
--- a/lib/noreturn.h
+++ b/lib/noreturn.h
@@ -1,6 +1,6 @@
 /* Macros for declaring functions as non-returning.
 
-   Copyright (C) 2017-2022 Free Software Foundation, Inc.
+   Copyright (C) 2017-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/nproc.c b/lib/nproc.c
index 378d3ff3fc..2740c458c1 100644
--- a/lib/nproc.c
+++ b/lib/nproc.c
@@ -1,6 +1,6 @@
 /* Detect the number of processors.
 
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/nproc.h b/lib/nproc.h
index 505351d95f..7b8b16d37c 100644
--- a/lib/nproc.h
+++ b/lib/nproc.h
@@ -1,6 +1,6 @@
 /* Detect the number of processors.
 
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/nstrftime.c b/lib/nstrftime.c
index 37034eb9fb..68bb560910 100644
--- a/lib/nstrftime.c
+++ b/lib/nstrftime.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991-2022 Free Software Foundation, Inc.
+/* Copyright (C) 1991-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/obstack.c b/lib/obstack.c
index 2cf60454de..ca2e61c8cc 100644
--- a/lib/obstack.c
+++ b/lib/obstack.c
@@ -1,5 +1,5 @@
 /* obstack.c - subroutines used implicitly by object stack macros
-   Copyright (C) 1988-2022 Free Software Foundation, Inc.
+   Copyright (C) 1988-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/obstack.h b/lib/obstack.h
index de16ac9247..1e66e4d4c8 100644
--- a/lib/obstack.h
+++ b/lib/obstack.h
@@ -1,5 +1,5 @@
 /* obstack.h - object stack macros
-   Copyright (C) 1988-2022 Free Software Foundation, Inc.
+   Copyright (C) 1988-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/obstack_printf.c b/lib/obstack_printf.c
index a6849e8836..de4b677949 100644
--- a/lib/obstack_printf.c
+++ b/lib/obstack_printf.c
@@ -1,5 +1,5 @@
 /* Formatted output to obstacks.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published
diff --git a/lib/offtostr.c b/lib/offtostr.c
index df11155fef..b02890f7c0 100644
--- a/lib/offtostr.c
+++ b/lib/offtostr.c
@@ -1,6 +1,6 @@
 /* Convert 'off_t' integer to printable string.
 
-   Copyright (C) 2004-2022 Free Software Foundation, Inc.
+   Copyright (C) 2004-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/omp-init.c b/lib/omp-init.c
index 057690fb8c..705200c80b 100644
--- a/lib/omp-init.c
+++ b/lib/omp-init.c
@@ -1,6 +1,6 @@
 /* Initialize OpenMP.
 
-   Copyright (C) 2017-2022 Free Software Foundation, Inc.
+   Copyright (C) 2017-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/omp.in.h b/lib/omp.in.h
index ab7b806444..3b63d09577 100644
--- a/lib/omp.in.h
+++ b/lib/omp.in.h
@@ -1,6 +1,6 @@
 /* OpenMP declarations.
 
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/open-safer.c b/lib/open-safer.c
index 006de5e0a4..381d16ffca 100644
--- a/lib/open-safer.c
+++ b/lib/open-safer.c
@@ -1,6 +1,6 @@
 /* Invoke open, but avoid some glitches.
 
-   Copyright (C) 2005-2006, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2006, 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/open.c b/lib/open.c
index 170bff108e..7ec8fdc35d 100644
--- a/lib/open.c
+++ b/lib/open.c
@@ -1,5 +1,5 @@
 /* Open a descriptor to a file.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/openat-die.c b/lib/openat-die.c
index 486d06c254..df3dbc9b66 100644
--- a/lib/openat-die.c
+++ b/lib/openat-die.c
@@ -1,6 +1,6 @@
 /* Report a save- or restore-cwd failure in our openat replacement and then 
exit.
 
-   Copyright (C) 2005-2006, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2006, 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/openat-priv.h b/lib/openat-priv.h
index 5d60810709..1d31c4e83c 100644
--- a/lib/openat-priv.h
+++ b/lib/openat-priv.h
@@ -1,6 +1,6 @@
 /* Internals for openat-like functions.
 
-   Copyright (C) 2005-2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2006, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/openat-proc.c b/lib/openat-proc.c
index 3bacf7dbd1..2a6a85f069 100644
--- a/lib/openat-proc.c
+++ b/lib/openat-proc.c
@@ -1,6 +1,6 @@
 /* Create /proc/self/fd-related names for subfiles of open directories.
 
-   Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/openat-safer.c b/lib/openat-safer.c
index 7b9a873ae7..6d8fa44953 100644
--- a/lib/openat-safer.c
+++ b/lib/openat-safer.c
@@ -1,6 +1,6 @@
 /* Invoke openat, but avoid some glitches.
 
-   Copyright (C) 2005-2006, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2006, 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/openat.c b/lib/openat.c
index a78d0456ed..f28b10e138 100644
--- a/lib/openat.c
+++ b/lib/openat.c
@@ -1,5 +1,5 @@
 /* provide a replacement openat function
-   Copyright (C) 2004-2022 Free Software Foundation, Inc.
+   Copyright (C) 2004-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/openat.h b/lib/openat.h
index c2f64ff50e..37d8eedbee 100644
--- a/lib/openat.h
+++ b/lib/openat.h
@@ -1,5 +1,5 @@
 /* provide a replacement openat function
-   Copyright (C) 2004-2006, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2004-2006, 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/opendir-safer.c b/lib/opendir-safer.c
index 1677fb6974..ec6bb79177 100644
--- a/lib/opendir-safer.c
+++ b/lib/opendir-safer.c
@@ -1,6 +1,6 @@
 /* Invoke opendir, but avoid some glitches.
 
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/opendir.c b/lib/opendir.c
index fc6b455a62..bbe2c1dbcd 100644
--- a/lib/opendir.c
+++ b/lib/opendir.c
@@ -1,5 +1,5 @@
 /* Start reading the entries of a directory.
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/opendirat.c b/lib/opendirat.c
index 1068ae0c46..835715384e 100644
--- a/lib/opendirat.c
+++ b/lib/opendirat.c
@@ -1,6 +1,6 @@
 /* Open a directory relative to another directory.
 
-   Copyright 2006-2022 Free Software Foundation, Inc.
+   Copyright 2006-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/opendirat.h b/lib/opendirat.h
index 5568790edf..9e445cd29a 100644
--- a/lib/opendirat.h
+++ b/lib/opendirat.h
@@ -1,6 +1,6 @@
 /* Open a directory relative to another directory.
 
-   Copyright (C) 2018-2022 Free Software Foundation, Inc.
+   Copyright (C) 2018-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published
diff --git a/lib/openpty.c b/lib/openpty.c
index 1286ef988f..838641a163 100644
--- a/lib/openpty.c
+++ b/lib/openpty.c
@@ -1,5 +1,5 @@
 /* Open a pseudo-terminal.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/os2-spawn.c b/lib/os2-spawn.c
index bfedfa1cc3..c47f33afc3 100644
--- a/lib/os2-spawn.c
+++ b/lib/os2-spawn.c
@@ -1,5 +1,5 @@
 /* Auxiliary functions for the creation of subprocesses.  OS/2 kLIBC API.
-   Copyright (C) 2001, 2003-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001, 2003-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2003.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/os2-spawn.h b/lib/os2-spawn.h
index 8675a10db4..ebfaf110a2 100644
--- a/lib/os2-spawn.h
+++ b/lib/os2-spawn.h
@@ -1,5 +1,5 @@
 /* Auxiliary functions for the creation of subprocesses.  OS/2 kLIBC API.
-   Copyright (C) 2001, 2003-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001, 2003-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2003.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/pagealign_alloc.c b/lib/pagealign_alloc.c
index c56f40ff4f..fa74c09fd4 100644
--- a/lib/pagealign_alloc.c
+++ b/lib/pagealign_alloc.c
@@ -1,6 +1,6 @@
 /* Memory allocation aligned to system page boundaries.
 
-   Copyright (C) 2005-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/pagealign_alloc.h b/lib/pagealign_alloc.h
index 95d5ed798f..8f2083c446 100644
--- a/lib/pagealign_alloc.h
+++ b/lib/pagealign_alloc.h
@@ -1,6 +1,6 @@
 /* Memory allocation aligned to system page boundaries.
 
-   Copyright (C) 2005, 2008, 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005, 2008, 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/parse-datetime.h b/lib/parse-datetime.h
index ae88b2183b..0065c2f6cc 100644
--- a/lib/parse-datetime.h
+++ b/lib/parse-datetime.h
@@ -1,6 +1,6 @@
 /* Parse a string into an internal timestamp.
 
-   Copyright (C) 1995, 1997-1998, 2003-2004, 2007, 2009-2022 Free Software
+   Copyright (C) 1995, 1997-1998, 2003-2004, 2007, 2009-2023 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/parse-datetime.y b/lib/parse-datetime.y
index 066d414c29..45c5e43415 100644
--- a/lib/parse-datetime.y
+++ b/lib/parse-datetime.y
@@ -1,7 +1,7 @@
 %{
 /* Parse a string into an internal timestamp.
 
-   Copyright (C) 1999-2000, 2002-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999-2000, 2002-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/parse-duration.c b/lib/parse-duration.c
index 6b9eef9424..6c3dd08d9f 100644
--- a/lib/parse-duration.c
+++ b/lib/parse-duration.c
@@ -1,5 +1,5 @@
 /* Parse a time duration and return a seconds count
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
    Written by Bruce Korb <bkorb@gnu.org>, 2008.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/parse-duration.h b/lib/parse-duration.h
index d0c54a34af..7e085c1074 100644
--- a/lib/parse-duration.h
+++ b/lib/parse-duration.h
@@ -1,5 +1,5 @@
 /* Parse a time duration and return a seconds count
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
    Written by Bruce Korb <bkorb@gnu.org>, 2008.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/passfd.c b/lib/passfd.c
index 77cd1c471d..53c6cd658d 100644
--- a/lib/passfd.c
+++ b/lib/passfd.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2011-2022 Free Software Foundation, Inc.
+/* Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/passfd.h b/lib/passfd.h
index 0bea01e321..8a29aba24a 100644
--- a/lib/passfd.h
+++ b/lib/passfd.h
@@ -1,6 +1,6 @@
 /* passfd.h -- definitions and prototypes for passfd.c
 
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/pathmax.h b/lib/pathmax.h
index 19b93d7eab..0dd8f3bc5c 100644
--- a/lib/pathmax.h
+++ b/lib/pathmax.h
@@ -1,5 +1,5 @@
 /* Define PATH_MAX somehow.  Requires sys/types.h.
-   Copyright (C) 1992, 1999, 2001, 2003, 2005, 2009-2022 Free Software
+   Copyright (C) 1992, 1999, 2001, 2003, 2005, 2009-2023 Free Software
    Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/pclose.c b/lib/pclose.c
index a6a5353927..ec94abc06e 100644
--- a/lib/pclose.c
+++ b/lib/pclose.c
@@ -1,5 +1,5 @@
 /* Close a stream to a sub-process.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/perror.c b/lib/perror.c
index 977a9a55c8..a10cf71e16 100644
--- a/lib/perror.c
+++ b/lib/perror.c
@@ -1,5 +1,5 @@
 /* Print a message describing error code.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
    Written by Bruno Haible and Simon Josefsson.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/physmem.c b/lib/physmem.c
index 6d185205fb..f450587141 100644
--- a/lib/physmem.c
+++ b/lib/physmem.c
@@ -1,6 +1,6 @@
 /* Calculate the size of physical memory.
 
-   Copyright (C) 2000-2001, 2003, 2005-2006, 2009-2022 Free Software
+   Copyright (C) 2000-2001, 2003, 2005-2006, 2009-2023 Free Software
    Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/physmem.h b/lib/physmem.h
index ebbd796b68..856b9d031d 100644
--- a/lib/physmem.h
+++ b/lib/physmem.h
@@ -1,6 +1,6 @@
 /* Calculate the size of physical memory.
 
-   Copyright (C) 2000, 2003, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2000, 2003, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/pipe-filter-aux.c b/lib/pipe-filter-aux.c
index 8827d8698e..5fc7758449 100644
--- a/lib/pipe-filter-aux.c
+++ b/lib/pipe-filter-aux.c
@@ -1,5 +1,5 @@
 /* Auxiliary code for filtering of data through a subprocess.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/pipe-filter-aux.h b/lib/pipe-filter-aux.h
index df7dac6321..6294d0df85 100644
--- a/lib/pipe-filter-aux.h
+++ b/lib/pipe-filter-aux.h
@@ -1,5 +1,5 @@
 /* Auxiliary code for filtering of data through a subprocess.
-   Copyright (C) 2001-2003, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2003, 2008-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <haible@clisp.cons.org>, 2009.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/pipe-filter-gi.c b/lib/pipe-filter-gi.c
index ca7d763616..5b04bf7c7d 100644
--- a/lib/pipe-filter-gi.c
+++ b/lib/pipe-filter-gi.c
@@ -1,5 +1,5 @@
 /* Filtering of data through a subprocess.
-   Copyright (C) 2001-2003, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2003, 2008-2023 Free Software Foundation, Inc.
    Written by Paolo Bonzini <bonzini@gnu.org>, 2009,
    and Bruno Haible <bruno@clisp.org>, 2009.
 
diff --git a/lib/pipe-filter-ii.c b/lib/pipe-filter-ii.c
index f8332b134d..1730e8175b 100644
--- a/lib/pipe-filter-ii.c
+++ b/lib/pipe-filter-ii.c
@@ -1,5 +1,5 @@
 /* Filtering of data through a subprocess.
-   Copyright (C) 2001-2003, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2003, 2008-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/pipe-filter.h b/lib/pipe-filter.h
index da122d51bb..d93ba9d84d 100644
--- a/lib/pipe-filter.h
+++ b/lib/pipe-filter.h
@@ -1,5 +1,5 @@
 /* Filtering of data through a subprocess.  -*- coding: utf-8 -*-
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <haible@clisp.cons.org>, 2009,
    and Paolo Bonzini <bonzini@gnu.org>, 2009.
 
diff --git a/lib/pipe-safer.c b/lib/pipe-safer.c
index 22f8695e2f..750d0970b3 100644
--- a/lib/pipe-safer.c
+++ b/lib/pipe-safer.c
@@ -1,5 +1,5 @@
 /* Invoke pipe, but avoid some glitches.
-   Copyright (C) 2005-2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2006, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/pipe.c b/lib/pipe.c
index ce909b9f01..e8573ed97f 100644
--- a/lib/pipe.c
+++ b/lib/pipe.c
@@ -1,5 +1,5 @@
 /* Create a pipe.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/pipe2-safer.c b/lib/pipe2-safer.c
index 3a84c66386..0a5336dbed 100644
--- a/lib/pipe2-safer.c
+++ b/lib/pipe2-safer.c
@@ -1,5 +1,5 @@
 /* Invoke pipe2, but avoid some glitches.
-   Copyright (C) 2005-2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2006, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/pipe2.c b/lib/pipe2.c
index a3cbb7f261..8f06575a1d 100644
--- a/lib/pipe2.c
+++ b/lib/pipe2.c
@@ -1,5 +1,5 @@
 /* Create a pipe, with specific opening flags.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/poll.c b/lib/poll.c
index 9cfde5f81a..a0dc2c5226 100644
--- a/lib/poll.c
+++ b/lib/poll.c
@@ -1,7 +1,7 @@
 /* Emulation for poll(2)
    Contributed by Paolo Bonzini.
 
-   Copyright 2001-2003, 2006-2022 Free Software Foundation, Inc.
+   Copyright 2001-2003, 2006-2023 Free Software Foundation, Inc.
 
    This file is part of gnulib.
 
diff --git a/lib/poll.in.h b/lib/poll.in.h
index 1af6a232fb..9a15ef6732 100644
--- a/lib/poll.in.h
+++ b/lib/poll.in.h
@@ -1,7 +1,7 @@
 /* Header for poll(2) emulation
    Contributed by Paolo Bonzini.
 
-   Copyright 2001-2003, 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright 2001-2003, 2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is part of gnulib.
 
diff --git a/lib/popen-safer.c b/lib/popen-safer.c
index 057f318b06..e45d15520c 100644
--- a/lib/popen-safer.c
+++ b/lib/popen-safer.c
@@ -1,6 +1,6 @@
 /* Invoke popen, but avoid some glitches.
 
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/popen.c b/lib/popen.c
index 84785c50e4..beaefd4f82 100644
--- a/lib/popen.c
+++ b/lib/popen.c
@@ -1,5 +1,5 @@
 /* Open a stream to a sub-process.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/posix_memalign.c b/lib/posix_memalign.c
index b490665166..a44a956e1a 100644
--- a/lib/posix_memalign.c
+++ b/lib/posix_memalign.c
@@ -1,5 +1,5 @@
 /* A posix_memalign() function that works around platform bugs.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/posix_openpt.c b/lib/posix_openpt.c
index cd8cf4cd0b..27452fdcb1 100644
--- a/lib/posix_openpt.c
+++ b/lib/posix_openpt.c
@@ -1,5 +1,5 @@
 /* Open the master side of a pseudo-terminal.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/posixtm.c b/lib/posixtm.c
index 3c323782fa..43d65f5975 100644
--- a/lib/posixtm.c
+++ b/lib/posixtm.c
@@ -1,6 +1,6 @@
 /* Parse dates for touch and date.
 
-   Copyright (C) 1989-1991, 1998, 2000-2022 Free Software Foundation, Inc.
+   Copyright (C) 1989-1991, 1998, 2000-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/posixtm.h b/lib/posixtm.h
index 3ff026a4b8..51738df5bd 100644
--- a/lib/posixtm.h
+++ b/lib/posixtm.h
@@ -1,6 +1,6 @@
 /* Parse dates for touch and date.
 
-   Copyright (C) 1998, 2003, 2005, 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 1998, 2003, 2005, 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/posixver.c b/lib/posixver.c
index 2cb771310a..30a616c03d 100644
--- a/lib/posixver.c
+++ b/lib/posixver.c
@@ -1,6 +1,6 @@
 /* Which POSIX version to conform to, for utilities.
 
-   Copyright (C) 2002-2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002-2006, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/posixver.h b/lib/posixver.h
index 1f5e6c726a..ab866793eb 100644
--- a/lib/posixver.h
+++ b/lib/posixver.h
@@ -1,6 +1,6 @@
 /* Which POSIX version to conform to, for utilities.
 
-   Copyright (C) 2002-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published
diff --git a/lib/powf.c b/lib/powf.c
index aee0b04a82..3c516fdfbb 100644
--- a/lib/powf.c
+++ b/lib/powf.c
@@ -1,5 +1,5 @@
 /* Power function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/pread.c b/lib/pread.c
index 5a7280e6d6..365926727a 100644
--- a/lib/pread.c
+++ b/lib/pread.c
@@ -1,5 +1,5 @@
 /* replacement pread function
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/printf-args.c b/lib/printf-args.c
index 669c24a40b..5e14f65479 100644
--- a/lib/printf-args.c
+++ b/lib/printf-args.c
@@ -1,5 +1,5 @@
 /* Decomposed printf argument list.
-   Copyright (C) 1999, 2002-2003, 2005-2007, 2009-2022 Free Software
+   Copyright (C) 1999, 2002-2003, 2005-2007, 2009-2023 Free Software
    Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/printf-args.h b/lib/printf-args.h
index 553fe9619c..f303cb19e9 100644
--- a/lib/printf-args.h
+++ b/lib/printf-args.h
@@ -1,5 +1,5 @@
 /* Decomposed printf argument list.
-   Copyright (C) 1999, 2002-2003, 2006-2007, 2011-2022 Free Software
+   Copyright (C) 1999, 2002-2003, 2006-2007, 2011-2023 Free Software
    Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/printf-frexp.c b/lib/printf-frexp.c
index 68fce6817a..8252b0656c 100644
--- a/lib/printf-frexp.c
+++ b/lib/printf-frexp.c
@@ -1,5 +1,5 @@
 /* Split a double into fraction and mantissa, for hexadecimal printf.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/printf-frexp.h b/lib/printf-frexp.h
index 44ece5dc7b..7c3f9e585d 100644
--- a/lib/printf-frexp.h
+++ b/lib/printf-frexp.h
@@ -1,5 +1,5 @@
 /* Split a double into fraction and mantissa, for hexadecimal printf.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/printf-frexpl.c b/lib/printf-frexpl.c
index 0004e026ba..ba7b579b98 100644
--- a/lib/printf-frexpl.c
+++ b/lib/printf-frexpl.c
@@ -1,5 +1,5 @@
 /* Split a 'long double' into fraction and mantissa, for hexadecimal printf.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/printf-frexpl.h b/lib/printf-frexpl.h
index 9220d7b3e0..827443ec57 100644
--- a/lib/printf-frexpl.h
+++ b/lib/printf-frexpl.h
@@ -1,5 +1,5 @@
 /* Split a 'long double' into fraction and mantissa, for hexadecimal printf.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/printf-parse.c b/lib/printf-parse.c
index aab02dc5bf..3040749abd 100644
--- a/lib/printf-parse.c
+++ b/lib/printf-parse.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999-2000, 2002-2003, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999-2000, 2002-2003, 2006-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/printf-parse.h b/lib/printf-parse.h
index b12ccea3c4..1f86e32c99 100644
--- a/lib/printf-parse.h
+++ b/lib/printf-parse.h
@@ -1,5 +1,5 @@
 /* Parse printf format string.
-   Copyright (C) 1999, 2002-2003, 2005, 2007, 2010-2022 Free Software
+   Copyright (C) 1999, 2002-2003, 2005, 2007, 2010-2023 Free Software
    Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/printf.c b/lib/printf.c
index b7c2f2e83c..0048327129 100644
--- a/lib/printf.c
+++ b/lib/printf.c
@@ -1,5 +1,5 @@
 /* Formatted output to a stream.
-   Copyright (C) 2007, 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2010-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/priv-set.c b/lib/priv-set.c
index f0487f429d..8447bd92b9 100644
--- a/lib/priv-set.c
+++ b/lib/priv-set.c
@@ -1,6 +1,6 @@
 /* Query, remove, or restore a Solaris privilege.
 
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/priv-set.h b/lib/priv-set.h
index c70a8f754b..78af45038f 100644
--- a/lib/priv-set.h
+++ b/lib/priv-set.h
@@ -1,6 +1,6 @@
 /* Query, remove, or restore a Solaris privilege.
 
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/progname.c b/lib/progname.c
index 6f09c2b57f..ed928e04e9 100644
--- a/lib/progname.c
+++ b/lib/progname.c
@@ -1,5 +1,5 @@
 /* Program name management.
-   Copyright (C) 2001-2003, 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2003, 2005-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2001.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/progname.h b/lib/progname.h
index 05610896a3..945d1697b7 100644
--- a/lib/progname.h
+++ b/lib/progname.h
@@ -1,5 +1,5 @@
 /* Program name management.
-   Copyright (C) 2001-2004, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2004, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2001.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/progreloc.c b/lib/progreloc.c
index c9e3e663f6..8534fb08da 100644
--- a/lib/progreloc.c
+++ b/lib/progreloc.c
@@ -1,5 +1,5 @@
 /* Provide relocatable programs.
-   Copyright (C) 2003-2022 Free Software Foundation, Inc.
+   Copyright (C) 2003-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2003.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/propername.c b/lib/propername.c
index 6c9d7a5a3d..f9eae490db 100644
--- a/lib/propername.c
+++ b/lib/propername.c
@@ -1,5 +1,5 @@
 /* Localization of proper names.
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/propername.h b/lib/propername.h
index 92d1ec5a5d..359c8b57ff 100644
--- a/lib/propername.h
+++ b/lib/propername.h
@@ -1,5 +1,5 @@
 /* Localization of proper names.  -*- coding: utf-8 -*-
-   Copyright (C) 2006, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2008-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/pselect.c b/lib/pselect.c
index a1eca0c6a2..f5d21e1048 100644
--- a/lib/pselect.c
+++ b/lib/pselect.c
@@ -1,6 +1,6 @@
 /* pselect - synchronous I/O multiplexing
 
-   Copyright 2011-2022 Free Software Foundation, Inc.
+   Copyright 2011-2023 Free Software Foundation, Inc.
 
    This file is part of gnulib.
 
diff --git a/lib/pt_chown.c b/lib/pt_chown.c
index 12e67490f9..3ad770f01d 100644
--- a/lib/pt_chown.c
+++ b/lib/pt_chown.c
@@ -1,5 +1,5 @@
 /* pt_chown - helper program for 'grantpt'.
-   Copyright (C) 1998-1999, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1998-1999, 2009-2023 Free Software Foundation, Inc.
    Contributed by C. Scott Ananian <cananian@alumni.princeton.edu>, 1998.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/pthread-cond.c b/lib/pthread-cond.c
index 06608f35a2..8cf5424735 100644
--- a/lib/pthread-cond.c
+++ b/lib/pthread-cond.c
@@ -1,5 +1,5 @@
 /* POSIX condition variables.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/pthread-mutex.c b/lib/pthread-mutex.c
index 5af75b59ab..0e7252ffe6 100644
--- a/lib/pthread-mutex.c
+++ b/lib/pthread-mutex.c
@@ -1,5 +1,5 @@
 /* POSIX mutexes (locks).
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/pthread-once.c b/lib/pthread-once.c
index 3898135805..1954bd3893 100644
--- a/lib/pthread-once.c
+++ b/lib/pthread-once.c
@@ -1,5 +1,5 @@
 /* POSIX once-only control.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/pthread-rwlock.c b/lib/pthread-rwlock.c
index a24f08debe..8713d1abc2 100644
--- a/lib/pthread-rwlock.c
+++ b/lib/pthread-rwlock.c
@@ -1,5 +1,5 @@
 /* POSIX read-write locks.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/pthread-spin.c b/lib/pthread-spin.c
index d110749655..ca3e88755a 100644
--- a/lib/pthread-spin.c
+++ b/lib/pthread-spin.c
@@ -1,5 +1,5 @@
 /* POSIX spin locks.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/pthread-thread.c b/lib/pthread-thread.c
index a5f07fb243..5a4e466274 100644
--- a/lib/pthread-thread.c
+++ b/lib/pthread-thread.c
@@ -1,5 +1,5 @@
 /* Creating and controlling POSIX threads.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/pthread-tss.c b/lib/pthread-tss.c
index ec422bfc6d..6925aa8be4 100644
--- a/lib/pthread-tss.c
+++ b/lib/pthread-tss.c
@@ -1,5 +1,5 @@
 /* POSIX thread-specific storage.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/pthread.in.h b/lib/pthread.in.h
index cf9ca3a4a5..4f206681a9 100644
--- a/lib/pthread.in.h
+++ b/lib/pthread.in.h
@@ -1,6 +1,6 @@
 /* Implement the most essential subset of POSIX 1003.1-2008 pthread.h.
 
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/pthread_mutex_timedlock.c b/lib/pthread_mutex_timedlock.c
index 2e8af0328b..feecf6f519 100644
--- a/lib/pthread_mutex_timedlock.c
+++ b/lib/pthread_mutex_timedlock.c
@@ -1,5 +1,5 @@
 /* Lock a mutex, abandoning after a certain time.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/pthread_sigmask.c b/lib/pthread_sigmask.c
index cd4eb80732..128107582a 100644
--- a/lib/pthread_sigmask.c
+++ b/lib/pthread_sigmask.c
@@ -1,5 +1,5 @@
 /* POSIX compatible signal blocking for threads.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/ptsname.c b/lib/ptsname.c
index b6207dc3de..2956a874fa 100644
--- a/lib/ptsname.c
+++ b/lib/ptsname.c
@@ -1,5 +1,5 @@
 /* Determine name of the slave side of a pseudo-terminal.
-   Copyright (C) 1998, 2002, 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 1998, 2002, 2010-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/ptsname_r.c b/lib/ptsname_r.c
index 4d96d50fd4..ed70b0b438 100644
--- a/lib/ptsname_r.c
+++ b/lib/ptsname_r.c
@@ -1,5 +1,5 @@
 /* Determine name of the slave side of a pseudo-terminal.
-   Copyright (C) 1998, 2002, 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 1998, 2002, 2010-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/pty-private.h b/lib/pty-private.h
index 07a2d2e648..889293f1d3 100644
--- a/lib/pty-private.h
+++ b/lib/pty-private.h
@@ -1,5 +1,5 @@
 /* Interface to the pt_chown program.
-   Copyright (C) 1998-1999, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1998-1999, 2009-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Zack Weinberg <zack@rabi.phys.columbia.edu>, 1998.
 
diff --git a/lib/pty.in.h b/lib/pty.in.h
index fea88b4057..8f7b81071a 100644
--- a/lib/pty.in.h
+++ b/lib/pty.in.h
@@ -1,5 +1,5 @@
 /* Substitute for and wrapper around <pty.h>.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/putenv.c b/lib/putenv.c
index b0d27e2f6c..5d339407a4 100644
--- a/lib/putenv.c
+++ b/lib/putenv.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991, 1994, 1997-1998, 2000, 2003-2022 Free Software
+/* Copyright (C) 1991, 1994, 1997-1998, 2000, 2003-2023 Free Software
    Foundation, Inc.
 
    NOTE: The canonical source of this file is maintained with the GNU C
diff --git a/lib/pwrite.c b/lib/pwrite.c
index afbed41aaa..3cd9e60a6b 100644
--- a/lib/pwrite.c
+++ b/lib/pwrite.c
@@ -1,6 +1,6 @@
 /* Write block to given position in file without changing file pointer.
    POSIX version.
-   Copyright (C) 1997-1999, 2002, 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 1997-1999, 2002, 2011-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
diff --git a/lib/qcopy-acl.c b/lib/qcopy-acl.c
index 37fb179260..883bcf7d58 100644
--- a/lib/qcopy-acl.c
+++ b/lib/qcopy-acl.c
@@ -1,6 +1,6 @@
 /* Copy access control list from one file to another.  -*- coding: utf-8 -*-
 
-   Copyright (C) 2002-2003, 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002-2003, 2005-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/qset-acl.c b/lib/qset-acl.c
index 841677baf2..c3442d060f 100644
--- a/lib/qset-acl.c
+++ b/lib/qset-acl.c
@@ -1,6 +1,6 @@
 /* qset-acl.c - set access control list equivalent to a mode
 
-   Copyright (C) 2002-2003, 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002-2003, 2005-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/qsort.c b/lib/qsort.c
index 9df6ce5b90..9006395a20 100644
--- a/lib/qsort.c
+++ b/lib/qsort.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991-2022 Free Software Foundation, Inc.
+/* Copyright (C) 1991-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Written by Douglas C. Schmidt (schmidt@ics.uci.edu).
 
diff --git a/lib/qsort_r.c b/lib/qsort_r.c
index a13a17d9e7..d912c769dd 100644
--- a/lib/qsort_r.c
+++ b/lib/qsort_r.c
@@ -1,6 +1,6 @@
 /* Reentrant sort function.
 
-   Copyright 2014-2022 Free Software Foundation, Inc.
+   Copyright 2014-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/quote.h b/lib/quote.h
index 0910ffda31..9ec5747313 100644
--- a/lib/quote.h
+++ b/lib/quote.h
@@ -1,6 +1,6 @@
 /* quote.h - prototypes for quote.c
 
-   Copyright (C) 1998-2001, 2003, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1998-2001, 2003, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/quotearg.c b/lib/quotearg.c
index ac339991a2..975bd61dd0 100644
--- a/lib/quotearg.c
+++ b/lib/quotearg.c
@@ -1,6 +1,6 @@
 /* quotearg.c - quote arguments for output
 
-   Copyright (C) 1998-2002, 2004-2022 Free Software Foundation, Inc.
+   Copyright (C) 1998-2002, 2004-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/quotearg.h b/lib/quotearg.h
index 2009fac79a..eb156126cb 100644
--- a/lib/quotearg.h
+++ b/lib/quotearg.h
@@ -1,6 +1,6 @@
 /* quotearg.h - quote arguments for output
 
-   Copyright (C) 1998-2002, 2004, 2006, 2008-2022 Free Software Foundation,
+   Copyright (C) 1998-2002, 2004, 2006, 2008-2023 Free Software Foundation,
    Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/raise.c b/lib/raise.c
index 385ddd3840..506e20b482 100644
--- a/lib/raise.c
+++ b/lib/raise.c
@@ -1,6 +1,6 @@
 /* Provide a non-threads replacement for the POSIX raise function.
 
-   Copyright (C) 2002-2003, 2005-2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002-2003, 2005-2006, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/random.c b/lib/random.c
index 2479ed0e81..50080ef2d5 100644
--- a/lib/random.c
+++ b/lib/random.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1995-2022 Free Software Foundation, Inc.
+/* Copyright (C) 1995-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/random_r.c b/lib/random_r.c
index 7b1bf57c9a..6369f042ec 100644
--- a/lib/random_r.c
+++ b/lib/random_r.c
@@ -1,5 +1,5 @@
 /*
-   Copyright (C) 1995-2022 Free Software Foundation, Inc.
+   Copyright (C) 1995-2023 Free Software Foundation, Inc.
 
    The GNU C Library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
diff --git a/lib/rawmemchr.c b/lib/rawmemchr.c
index bdd7307de4..45c6cd3527 100644
--- a/lib/rawmemchr.c
+++ b/lib/rawmemchr.c
@@ -1,5 +1,5 @@
 /* Searching in a string.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/rawmemchr.valgrind b/lib/rawmemchr.valgrind
index 64cf86c842..f3e4cb0f65 100644
--- a/lib/rawmemchr.valgrind
+++ b/lib/rawmemchr.valgrind
@@ -1,6 +1,6 @@
 # Suppress a valgrind message about use of uninitialized memory in rawmemchr().
 
-# Copyright (C) 2008-2022 Free Software Foundation, Inc.
+# Copyright (C) 2008-2023 Free Software Foundation, Inc.
 #
 # This file is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Lesser General Public License as
diff --git a/lib/read-file.c b/lib/read-file.c
index c63aaf0db4..1e62085394 100644
--- a/lib/read-file.c
+++ b/lib/read-file.c
@@ -1,5 +1,5 @@
 /* read-file.c -- read file contents into a string
-   Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Simon Josefsson and Bruno Haible.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/read-file.h b/lib/read-file.h
index 2067bac9d5..4122954e9b 100644
--- a/lib/read-file.h
+++ b/lib/read-file.h
@@ -1,5 +1,5 @@
 /* read-file.h -- read file contents into a string
-   Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Simon Josefsson.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/read.c b/lib/read.c
index 1bb7d90ceb..a0bdf06f0d 100644
--- a/lib/read.c
+++ b/lib/read.c
@@ -1,5 +1,5 @@
 /* POSIX compatible read() function.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/readdir.c b/lib/readdir.c
index 8e841df892..36eac8afbb 100644
--- a/lib/readdir.c
+++ b/lib/readdir.c
@@ -1,5 +1,5 @@
 /* Read the next entry of a directory.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/readline.c b/lib/readline.c
index 56d5a9ee80..8e24090c46 100644
--- a/lib/readline.c
+++ b/lib/readline.c
@@ -1,5 +1,5 @@
 /* readline.c --- Simple implementation of readline.
-   Copyright (C) 2005-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Simon Josefsson
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/readline.h b/lib/readline.h
index cb0080c57c..3840d0fc2a 100644
--- a/lib/readline.h
+++ b/lib/readline.h
@@ -1,5 +1,5 @@
 /* readline.h --- Simple implementation of readline.
-   Copyright (C) 2005, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005, 2009-2023 Free Software Foundation, Inc.
    Written by Simon Josefsson
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/readlink.c b/lib/readlink.c
index ed03cc8ded..14bbb7f10c 100644
--- a/lib/readlink.c
+++ b/lib/readlink.c
@@ -1,5 +1,5 @@
 /* Read the contents of a symbolic link.
-   Copyright (C) 2003-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2003-2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/readlinkat.c b/lib/readlinkat.c
index ab45e140b5..7738ba8bfd 100644
--- a/lib/readlinkat.c
+++ b/lib/readlinkat.c
@@ -1,5 +1,5 @@
 /* Read a symlink relative to an open directory.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/readtokens.c b/lib/readtokens.c
index 71f6657fde..8c165a1af8 100644
--- a/lib/readtokens.c
+++ b/lib/readtokens.c
@@ -1,6 +1,6 @@
 /* readtokens.c  -- Functions for reading tokens from an input stream.
 
-   Copyright (C) 1990-1991, 1999-2004, 2006, 2009-2022 Free Software
+   Copyright (C) 1990-1991, 1999-2004, 2006, 2009-2023 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/readtokens.h b/lib/readtokens.h
index 427bce9df3..25e4708a14 100644
--- a/lib/readtokens.h
+++ b/lib/readtokens.h
@@ -1,6 +1,6 @@
 /* readtokens.h -- Functions for reading tokens from an input stream.
 
-   Copyright (C) 1990-1991, 1999, 2001-2004, 2009-2022 Free Software
+   Copyright (C) 1990-1991, 1999, 2001-2004, 2009-2023 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/readtokens0.c b/lib/readtokens0.c
index 3c0c40b1c7..be354e7e0b 100644
--- a/lib/readtokens0.c
+++ b/lib/readtokens0.c
@@ -1,6 +1,6 @@
 /* readtokens0.c -- Read NUL-separated tokens from an input stream.
 
-   Copyright (C) 2004, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2004, 2006, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/readtokens0.h b/lib/readtokens0.h
index 0b0fc92ed2..6a1191c79b 100644
--- a/lib/readtokens0.h
+++ b/lib/readtokens0.h
@@ -1,6 +1,6 @@
 /* readtokens0.h -- read NUL-separated tokens from an input stream.
 
-   Copyright (C) 2004, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2004, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/readutmp.c b/lib/readutmp.c
index 49c9d6d374..d282254cdc 100644
--- a/lib/readutmp.c
+++ b/lib/readutmp.c
@@ -1,6 +1,6 @@
 /* GNU's read utmp module.
 
-   Copyright (C) 1992-2001, 2003-2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1992-2001, 2003-2006, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/readutmp.h b/lib/readutmp.h
index cb83f8edc6..bf2437e02a 100644
--- a/lib/readutmp.h
+++ b/lib/readutmp.h
@@ -1,6 +1,6 @@
 /* Declarations for GNU's read utmp module.
 
-   Copyright (C) 1992-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1992-2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/realloc.c b/lib/realloc.c
index c878381576..1063eb0987 100644
--- a/lib/realloc.c
+++ b/lib/realloc.c
@@ -1,6 +1,6 @@
 /* realloc() function that is glibc compatible.
 
-   Copyright (C) 1997, 2003-2004, 2006-2007, 2009-2022 Free Software
+   Copyright (C) 1997, 2003-2004, 2006-2007, 2009-2023 Free Software
    Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/reallocarray.c b/lib/reallocarray.c
index 70c1b47872..8c99250f7f 100644
--- a/lib/reallocarray.c
+++ b/lib/reallocarray.c
@@ -1,6 +1,6 @@
 /* reallocarray function that is glibc compatible.
 
-   Copyright (C) 2017-2022 Free Software Foundation, Inc.
+   Copyright (C) 2017-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/recv.c b/lib/recv.c
index 4910731edf..b41ae13cf5 100644
--- a/lib/recv.c
+++ b/lib/recv.c
@@ -1,6 +1,6 @@
 /* recv.c --- wrappers for Windows recv function
 
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/recvfrom.c b/lib/recvfrom.c
index 3c9f5b21dd..e8959c0dad 100644
--- a/lib/recvfrom.c
+++ b/lib/recvfrom.c
@@ -1,6 +1,6 @@
 /* recvfrom.c --- wrappers for Windows recvfrom function
 
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/regcomp.c b/lib/regcomp.c
index 122c3de58c..8947839685 100644
--- a/lib/regcomp.c
+++ b/lib/regcomp.c
@@ -1,5 +1,5 @@
 /* Extended regular expression matching and search library.
-   Copyright (C) 2002-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
 
diff --git a/lib/regex-quote.c b/lib/regex-quote.c
index 41639ea50e..cfc05ad139 100644
--- a/lib/regex-quote.c
+++ b/lib/regex-quote.c
@@ -1,5 +1,5 @@
 /* Construct a regular expression from a literal string.
-   Copyright (C) 1995, 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 1995, 2010-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <haible@clisp.cons.org>, 2010.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/regex-quote.h b/lib/regex-quote.h
index 0253cdfb45..cc704b2bbc 100644
--- a/lib/regex-quote.h
+++ b/lib/regex-quote.h
@@ -1,5 +1,5 @@
 /* Construct a regular expression from a literal string.
-   Copyright (C) 1995, 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 1995, 2010-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <haible@clisp.cons.org>, 2010.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/regex_internal.c b/lib/regex_internal.c
index 0e6919f340..998a19b724 100644
--- a/lib/regex_internal.c
+++ b/lib/regex_internal.c
@@ -1,5 +1,5 @@
 /* Extended regular expression matching and search library.
-   Copyright (C) 2002-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
 
diff --git a/lib/regex_internal.h b/lib/regex_internal.h
index 784d2d4586..149ec2e868 100644
--- a/lib/regex_internal.h
+++ b/lib/regex_internal.h
@@ -1,5 +1,5 @@
 /* Extended regular expression matching and search library.
-   Copyright (C) 2002-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
 
diff --git a/lib/regexec.c b/lib/regexec.c
index 521cb02841..13e0349e72 100644
--- a/lib/regexec.c
+++ b/lib/regexec.c
@@ -1,5 +1,5 @@
 /* Extended regular expression matching and search library.
-   Copyright (C) 2002-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
 
diff --git a/lib/relocatable.c b/lib/relocatable.c
index 1ca8ec0eb3..ac12c6da39 100644
--- a/lib/relocatable.c
+++ b/lib/relocatable.c
@@ -1,5 +1,5 @@
 /* Provide relocatable packages.
-   Copyright (C) 2003-2006, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2003-2006, 2008-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2003.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/relocatable.h b/lib/relocatable.h
index 49452fe78c..ce8238a906 100644
--- a/lib/relocatable.h
+++ b/lib/relocatable.h
@@ -1,5 +1,5 @@
 /* Provide relocatable packages.
-   Copyright (C) 2003, 2005, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2003, 2005, 2008-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2003.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/relocatable.valgrind b/lib/relocatable.valgrind
index 3e0c76b73e..53a3c54166 100644
--- a/lib/relocatable.valgrind
+++ b/lib/relocatable.valgrind
@@ -1,6 +1,6 @@
 # Suppress a valgrind message about a memory leak in relocatable.c.
 
-# Copyright (C) 2017-2022 Free Software Foundation, Inc.
+# Copyright (C) 2017-2023 Free Software Foundation, Inc.
 #
 # This file is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Lesser General Public License as
diff --git a/lib/relocwrapper.c b/lib/relocwrapper.c
index 9ef115300a..b77b5a99fa 100644
--- a/lib/relocwrapper.c
+++ b/lib/relocwrapper.c
@@ -1,5 +1,5 @@
 /* Relocating wrapper program.
-   Copyright (C) 2003, 2005-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2003, 2005-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2003.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/remainder.c b/lib/remainder.c
index 161c31ddf9..3c5e60b70c 100644
--- a/lib/remainder.c
+++ b/lib/remainder.c
@@ -1,5 +1,5 @@
 /* Remainder.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/remainderf.c b/lib/remainderf.c
index 713b916b6e..617633ed82 100644
--- a/lib/remainderf.c
+++ b/lib/remainderf.c
@@ -1,5 +1,5 @@
 /* Remainder.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/remainderl.c b/lib/remainderl.c
index 395538c39e..4f19baf699 100644
--- a/lib/remainderl.c
+++ b/lib/remainderl.c
@@ -1,5 +1,5 @@
 /* Remainder.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/remove.c b/lib/remove.c
index 7218e2c252..d604c8304f 100644
--- a/lib/remove.c
+++ b/lib/remove.c
@@ -1,5 +1,5 @@
 /* Remove a file or directory.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/rename.c b/lib/rename.c
index a525873170..4722f13a12 100644
--- a/lib/rename.c
+++ b/lib/rename.c
@@ -1,6 +1,6 @@
 /* Work around rename bugs in some systems.
 
-   Copyright (C) 2001-2003, 2005-2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2003, 2005-2006, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/renameat.c b/lib/renameat.c
index f08be7b27b..e482b4b56f 100644
--- a/lib/renameat.c
+++ b/lib/renameat.c
@@ -1,5 +1,5 @@
 /* Rename a file relative to open directories.
-   Copyright 2017-2022 Free Software Foundation, Inc.
+   Copyright 2017-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/renameatu.c b/lib/renameatu.c
index 0c9cdeb95f..939e58965f 100644
--- a/lib/renameatu.c
+++ b/lib/renameatu.c
@@ -1,5 +1,5 @@
 /* Rename a file relative to open directories.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/renameatu.h b/lib/renameatu.h
index 239df4ceff..86a7d2d1af 100644
--- a/lib/renameatu.h
+++ b/lib/renameatu.h
@@ -1,5 +1,5 @@
 /* Rename a file relative to open directories.
-   Copyright 2017-2022 Free Software Foundation, Inc.
+   Copyright 2017-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/resource-ext.h b/lib/resource-ext.h
index 6cf3fddeaf..284715c10d 100644
--- a/lib/resource-ext.h
+++ b/lib/resource-ext.h
@@ -1,5 +1,5 @@
 /* Extra functions for resource usage.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/rewinddir.c b/lib/rewinddir.c
index b07aaf9c68..9988dc7be3 100644
--- a/lib/rewinddir.c
+++ b/lib/rewinddir.c
@@ -1,5 +1,5 @@
 /* Restart reading the entries of a directory from the beginning.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/rijndael-alg-fst.c b/lib/rijndael-alg-fst.c
index ca48b15ab1..92070feb0b 100644
--- a/lib/rijndael-alg-fst.c
+++ b/lib/rijndael-alg-fst.c
@@ -1,5 +1,5 @@
 /* rijndael-alg-fst.c --- Rijndael cipher implementation.
- * Copyright (C) 2005-2006, 2009-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2005-2006, 2009-2023 Free Software Foundation, Inc.
  *
  * This file is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Lesser General Public License as
diff --git a/lib/rijndael-alg-fst.h b/lib/rijndael-alg-fst.h
index 485e199386..bcc9b78fe3 100644
--- a/lib/rijndael-alg-fst.h
+++ b/lib/rijndael-alg-fst.h
@@ -1,5 +1,5 @@
 /* rijndael-alg-fst.h --- Rijndael cipher implementation.
- * Copyright (C) 2005, 2009-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2005, 2009-2023 Free Software Foundation, Inc.
  *
  * This file is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Lesser General Public License as
diff --git a/lib/rijndael-api-fst.c b/lib/rijndael-api-fst.c
index c918d90eb3..501b11d0fa 100644
--- a/lib/rijndael-api-fst.c
+++ b/lib/rijndael-api-fst.c
@@ -1,5 +1,5 @@
 /* rijndael-api-fst.c --- Rijndael cipher implementation.
- * Copyright (C) 2005-2006, 2009-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2005-2006, 2009-2023 Free Software Foundation, Inc.
  *
  * This file is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Lesser General Public License as
diff --git a/lib/rijndael-api-fst.h b/lib/rijndael-api-fst.h
index b9f9853d2c..43258b937f 100644
--- a/lib/rijndael-api-fst.h
+++ b/lib/rijndael-api-fst.h
@@ -1,5 +1,5 @@
 /* rijndael-api-fst.h --- Rijndael cipher implementation.
- * Copyright (C) 2005, 2009-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2005, 2009-2023 Free Software Foundation, Inc.
  *
  * This file is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Lesser General Public License as
diff --git a/lib/rint.c b/lib/rint.c
index 1d5d84f386..a66f9ffd4a 100644
--- a/lib/rint.c
+++ b/lib/rint.c
@@ -1,5 +1,5 @@
 /* Round according to the current rounding mode.
-   Copyright (C) 2007, 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2010-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/rintf.c b/lib/rintf.c
index adb8fda4d2..f5c30b39af 100644
--- a/lib/rintf.c
+++ b/lib/rintf.c
@@ -1,5 +1,5 @@
 /* Round according to the current rounding mode.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/rintl.c b/lib/rintl.c
index c66059700f..fbfbf94db9 100644
--- a/lib/rintl.c
+++ b/lib/rintl.c
@@ -1,5 +1,5 @@
 /* Round according to the current rounding mode.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/rmdir.c b/lib/rmdir.c
index 8c8b75e040..bd1d8197dc 100644
--- a/lib/rmdir.c
+++ b/lib/rmdir.c
@@ -1,6 +1,6 @@
 /* Work around rmdir bugs.
 
-   Copyright (C) 1988, 1990, 1999, 2003-2006, 2009-2022 Free Software
+   Copyright (C) 1988, 1990, 1999, 2003-2006, 2009-2023 Free Software
    Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/root-uid.h b/lib/root-uid.h
index b3274e39aa..1905575e47 100644
--- a/lib/root-uid.h
+++ b/lib/root-uid.h
@@ -1,6 +1,6 @@
 /* The user ID that always has appropriate privileges in the POSIX sense.
 
-   Copyright 2012-2022 Free Software Foundation, Inc.
+   Copyright 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/round.c b/lib/round.c
index 7e62feeb5e..e01f3a4a5c 100644
--- a/lib/round.c
+++ b/lib/round.c
@@ -1,5 +1,5 @@
 /* Round toward nearest, breaking ties away from zero.
-   Copyright (C) 2007, 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2010-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/roundf.c b/lib/roundf.c
index e10a6ea5b7..9e197c5f36 100644
--- a/lib/roundf.c
+++ b/lib/roundf.c
@@ -1,5 +1,5 @@
 /* Round toward nearest, breaking ties away from zero.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/roundl.c b/lib/roundl.c
index d9a3c687fe..5490d2051a 100644
--- a/lib/roundl.c
+++ b/lib/roundl.c
@@ -1,5 +1,5 @@
 /* Round toward nearest, breaking ties away from zero.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/rpmatch.c b/lib/rpmatch.c
index fbdcb0305c..a07c9b949d 100644
--- a/lib/rpmatch.c
+++ b/lib/rpmatch.c
@@ -1,7 +1,7 @@
 /* Determine whether string value is affirmation or negative response
    according to current locale's data.
 
-   Copyright (C) 1996, 1998, 2000, 2002-2003, 2006-2022 Free Software
+   Copyright (C) 1996, 1998, 2000, 2002-2003, 2006-2023 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/safe-alloc.c b/lib/safe-alloc.c
index d1da1031d7..120100fde5 100644
--- a/lib/safe-alloc.c
+++ b/lib/safe-alloc.c
@@ -1,6 +1,6 @@
 /* Safer memory allocation.
 
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/safe-alloc.h b/lib/safe-alloc.h
index aa40edd9c6..6896e88147 100644
--- a/lib/safe-alloc.h
+++ b/lib/safe-alloc.h
@@ -1,6 +1,6 @@
 /* safe-alloc.h: safer memory allocation
 
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/safe-read.c b/lib/safe-read.c
index 04ffa7b84a..7f6dc09588 100644
--- a/lib/safe-read.c
+++ b/lib/safe-read.c
@@ -1,6 +1,6 @@
 /* An interface to read and write that retries after interrupts.
 
-   Copyright (C) 1993-1994, 1998, 2002-2006, 2009-2022 Free Software
+   Copyright (C) 1993-1994, 1998, 2002-2006, 2009-2023 Free Software
    Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/safe-read.h b/lib/safe-read.h
index a39bb984c0..d087447760 100644
--- a/lib/safe-read.h
+++ b/lib/safe-read.h
@@ -1,5 +1,5 @@
 /* An interface to read() that retries after interrupts.
-   Copyright (C) 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/safe-write.c b/lib/safe-write.c
index b779b36e7a..9d6a578d81 100644
--- a/lib/safe-write.c
+++ b/lib/safe-write.c
@@ -1,5 +1,5 @@
 /* An interface to write that retries after interrupts.
-   Copyright (C) 2002, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/safe-write.h b/lib/safe-write.h
index a5a6c90bce..31df322b14 100644
--- a/lib/safe-write.h
+++ b/lib/safe-write.h
@@ -1,5 +1,5 @@
 /* An interface to write() that retries after interrupts.
-   Copyright (C) 2002, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/same-inode.h b/lib/same-inode.h
index f65f3d039e..10964f00fc 100644
--- a/lib/same-inode.h
+++ b/lib/same-inode.h
@@ -1,6 +1,6 @@
 /* Determine whether two stat buffers are known to refer to the same file.
 
-   Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/same.c b/lib/same.c
index 858449a5a9..65c9d4ffa3 100644
--- a/lib/same.c
+++ b/lib/same.c
@@ -1,6 +1,6 @@
 /* Determine whether two file names refer to the same file.
 
-   Copyright (C) 1997-2000, 2002-2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1997-2000, 2002-2006, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/same.h b/lib/same.h
index caf592f985..6876701a77 100644
--- a/lib/same.h
+++ b/lib/same.h
@@ -1,6 +1,6 @@
 /* Determine whether two file names refer to the same file.
 
-   Copyright (C) 1997-2000, 2003-2004, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1997-2000, 2003-2004, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/save-cwd.c b/lib/save-cwd.c
index afa75e176e..3806084bd3 100644
--- a/lib/save-cwd.c
+++ b/lib/save-cwd.c
@@ -1,6 +1,6 @@
 /* save-cwd.c -- Save and restore current working directory.
 
-   Copyright (C) 1995, 1997-1998, 2003-2006, 2009-2022 Free Software
+   Copyright (C) 1995, 1997-1998, 2003-2006, 2009-2023 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/save-cwd.h b/lib/save-cwd.h
index 90e8a0747c..d089b0e214 100644
--- a/lib/save-cwd.h
+++ b/lib/save-cwd.h
@@ -1,6 +1,6 @@
 /* Save and restore current working directory.
 
-   Copyright (C) 1995, 1997-1998, 2003, 2009-2022 Free Software Foundation,
+   Copyright (C) 1995, 1997-1998, 2003, 2009-2023 Free Software Foundation,
    Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/savedir.c b/lib/savedir.c
index e91ceb580f..3e8501f33d 100644
--- a/lib/savedir.c
+++ b/lib/savedir.c
@@ -1,6 +1,6 @@
 /* savedir.c -- save the list of files in a directory in a string
 
-   Copyright (C) 1990, 1997-2001, 2003-2006, 2009-2022 Free Software
+   Copyright (C) 1990, 1997-2001, 2003-2006, 2009-2023 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/savedir.h b/lib/savedir.h
index 45912cfbd4..0cc7c4eeaf 100644
--- a/lib/savedir.h
+++ b/lib/savedir.h
@@ -1,6 +1,6 @@
 /* Save the list of files in a directory in a string.
 
-   Copyright (C) 1997, 1999, 2001, 2003, 2005, 2009-2022 Free Software
+   Copyright (C) 1997, 1999, 2001, 2003, 2005, 2009-2023 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/savewd.c b/lib/savewd.c
index dbb7ef2b47..4eddba32dc 100644
--- a/lib/savewd.c
+++ b/lib/savewd.c
@@ -1,6 +1,6 @@
 /* Save and restore the working directory, possibly using a child process.
 
-   Copyright (C) 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/savewd.h b/lib/savewd.h
index 22242a30a5..4f69c04a05 100644
--- a/lib/savewd.h
+++ b/lib/savewd.h
@@ -1,6 +1,6 @@
 /* Save and restore the working directory, possibly using a subprocess.
 
-   Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/scandir.c b/lib/scandir.c
index af6c1888a9..9d582e7ac3 100644
--- a/lib/scandir.c
+++ b/lib/scandir.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1992-1998, 2000, 2002-2003, 2009-2022 Free Software
+/* Copyright (C) 1992-1998, 2000, 2002-2003, 2009-2023 Free Software
    Foundation, Inc.
    This file is part of the GNU C Library.
 
diff --git a/lib/sched.in.h b/lib/sched.in.h
index d19c5022ac..2e035b5548 100644
--- a/lib/sched.in.h
+++ b/lib/sched.in.h
@@ -1,5 +1,5 @@
 /* A GNU-like <sched.h>.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/sched_yield.c b/lib/sched_yield.c
index 255de34e3e..a0336a811b 100644
--- a/lib/sched_yield.c
+++ b/lib/sched_yield.c
@@ -1,5 +1,5 @@
 /* Schedule other threads to run.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/scratch_buffer.h b/lib/scratch_buffer.h
index c0aa21630f..4cf60d232b 100644
--- a/lib/scratch_buffer.h
+++ b/lib/scratch_buffer.h
@@ -1,5 +1,5 @@
 /* Variable-sized buffer with on-stack default allocation.
-   Copyright (C) 2017-2022 Free Software Foundation, Inc.
+   Copyright (C) 2017-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/se-context.c b/lib/se-context.c
index 4679f47b86..baaf5d20c2 100644
--- a/lib/se-context.c
+++ b/lib/se-context.c
@@ -1,6 +1,6 @@
 /* Replacements for <selinux/context.h> functions.
 
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/se-context.in.h b/lib/se-context.in.h
index 57f920cdf5..28515fb522 100644
--- a/lib/se-context.in.h
+++ b/lib/se-context.in.h
@@ -1,5 +1,5 @@
 /* SELinux-related headers.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/se-label.c b/lib/se-label.c
index 8a9e406c3c..bda19a3386 100644
--- a/lib/se-label.c
+++ b/lib/se-label.c
@@ -1,6 +1,6 @@
 /* Replacements for <selinux/label.h> functions.
 
-   Copyright 2020-2022 Free Software Foundation, Inc.
+   Copyright 2020-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/se-label.in.h b/lib/se-label.in.h
index 4512f1acbe..2e2a6ce8eb 100644
--- a/lib/se-label.in.h
+++ b/lib/se-label.in.h
@@ -1,5 +1,5 @@
 /* Replacement <selinux/label.h> for platforms that lack it.
-   Copyright 2020-2022 Free Software Foundation, Inc.
+   Copyright 2020-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/se-selinux.c b/lib/se-selinux.c
index 7830eb609e..1ed75b2b12 100644
--- a/lib/se-selinux.c
+++ b/lib/se-selinux.c
@@ -1,6 +1,6 @@
 /* Replacements for <selinux/selinux.h> functions.
 
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/se-selinux.in.h b/lib/se-selinux.in.h
index bf8c3915a0..edf273be1f 100644
--- a/lib/se-selinux.in.h
+++ b/lib/se-selinux.in.h
@@ -1,5 +1,5 @@
 /* Replacement <selinux/selinux.h> for platforms that lack it.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/search.in.h b/lib/search.in.h
index 133b73aca6..cf5bfb9b1b 100644
--- a/lib/search.in.h
+++ b/lib/search.in.h
@@ -1,6 +1,6 @@
 /* A GNU-like <search.h>.
 
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/secure_getenv.c b/lib/secure_getenv.c
index 4e4ebc9b84..8b2dd5ec17 100644
--- a/lib/secure_getenv.c
+++ b/lib/secure_getenv.c
@@ -1,6 +1,6 @@
 /* Look up an environment variable, returning NULL in insecure situations.
 
-   Copyright 2013-2022 Free Software Foundation, Inc.
+   Copyright 2013-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/select.c b/lib/select.c
index c24249822d..3d3efff3de 100644
--- a/lib/select.c
+++ b/lib/select.c
@@ -1,7 +1,7 @@
 /* Emulation for select(2)
    Contributed by Paolo Bonzini.
 
-   Copyright 2008-2022 Free Software Foundation, Inc.
+   Copyright 2008-2023 Free Software Foundation, Inc.
 
    This file is part of gnulib.
 
diff --git a/lib/selinux-at.c b/lib/selinux-at.c
index ff971d94af..d66dc1c9e4 100644
--- a/lib/selinux-at.c
+++ b/lib/selinux-at.c
@@ -1,5 +1,5 @@
 /* openat-style fd-relative functions for SE Linux
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/selinux-at.h b/lib/selinux-at.h
index 5c5e163ea3..593d8ab66a 100644
--- a/lib/selinux-at.h
+++ b/lib/selinux-at.h
@@ -1,5 +1,5 @@
 /* Prototypes for openat-style fd-relative SELinux functions
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/send.c b/lib/send.c
index 5510c0c045..0ccb063920 100644
--- a/lib/send.c
+++ b/lib/send.c
@@ -1,6 +1,6 @@
 /* send.c --- wrappers for Windows send function
 
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/sendto.c b/lib/sendto.c
index 01163a6331..537eabefba 100644
--- a/lib/sendto.c
+++ b/lib/sendto.c
@@ -1,6 +1,6 @@
 /* sendto.c --- wrappers for Windows sendto function
 
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/set-acl.c b/lib/set-acl.c
index c2b6475f84..9111911864 100644
--- a/lib/set-acl.c
+++ b/lib/set-acl.c
@@ -1,6 +1,6 @@
 /* set-acl.c - set access control list equivalent to a mode
 
-   Copyright (C) 2002-2003, 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002-2003, 2005-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/set-permissions.c b/lib/set-permissions.c
index c1a4b82a0d..1d6732cc78 100644
--- a/lib/set-permissions.c
+++ b/lib/set-permissions.c
@@ -1,6 +1,6 @@
 /* Set permissions of a file.  -*- coding: utf-8 -*-
 
-   Copyright (C) 2002-2003, 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002-2003, 2005-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/setenv.c b/lib/setenv.c
index ebfd4e550e..f0b889969f 100644
--- a/lib/setenv.c
+++ b/lib/setenv.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1992, 1995-2003, 2005-2022 Free Software Foundation, Inc.
+/* Copyright (C) 1992, 1995-2003, 2005-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/sethostname.c b/lib/sethostname.c
index 35ce28c787..a581816a25 100644
--- a/lib/sethostname.c
+++ b/lib/sethostname.c
@@ -1,6 +1,6 @@
 /* sethostname emulation for glibc compliance.
 
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/setlocale-lock.c b/lib/setlocale-lock.c
index 4e7540e1ff..b70ba09b00 100644
--- a/lib/setlocale-lock.c
+++ b/lib/setlocale-lock.c
@@ -1,5 +1,5 @@
 /* Return the internal lock used by setlocale_null_r.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/setlocale.c b/lib/setlocale.c
index b9a29ee6ae..d3b453c2c3 100644
--- a/lib/setlocale.c
+++ b/lib/setlocale.c
@@ -1,5 +1,5 @@
 /* Set the current locale.  -*- coding: utf-8 -*-
-   Copyright (C) 2009, 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009, 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/setlocale_null.c b/lib/setlocale_null.c
index 778429b948..6ac563db14 100644
--- a/lib/setlocale_null.c
+++ b/lib/setlocale_null.c
@@ -1,5 +1,5 @@
 /* Query the name of the current global locale.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/setlocale_null.h b/lib/setlocale_null.h
index d1921b09ba..c740fa0ff6 100644
--- a/lib/setlocale_null.h
+++ b/lib/setlocale_null.h
@@ -1,5 +1,5 @@
 /* Query the name of the current global locale.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/setsockopt.c b/lib/setsockopt.c
index 2811c19af4..d435741a06 100644
--- a/lib/setsockopt.c
+++ b/lib/setsockopt.c
@@ -1,6 +1,6 @@
 /* setsockopt.c --- wrappers for Windows setsockopt function
 
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/settime.c b/lib/settime.c
index 4a5bc81153..376d85476a 100644
--- a/lib/settime.c
+++ b/lib/settime.c
@@ -1,6 +1,6 @@
 /* settime -- set the system clock
 
-   Copyright (C) 2002, 2004-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2004-2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/sh-quote.c b/lib/sh-quote.c
index fc6f960df9..0e5a56ea90 100644
--- a/lib/sh-quote.c
+++ b/lib/sh-quote.c
@@ -1,5 +1,5 @@
 /* Shell quoting.
-   Copyright (C) 2001-2004, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2004, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <haible@clisp.cons.org>, 2001.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/sh-quote.h b/lib/sh-quote.h
index ee1443909b..df8e6af6d1 100644
--- a/lib/sh-quote.h
+++ b/lib/sh-quote.h
@@ -1,5 +1,5 @@
 /* Shell quoting.
-   Copyright (C) 2001-2002, 2004, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2002, 2004, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <haible@clisp.cons.org>, 2001.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/sha1-stream.c b/lib/sha1-stream.c
index 0ba04352b6..393d9ae8dc 100644
--- a/lib/sha1-stream.c
+++ b/lib/sha1-stream.c
@@ -1,7 +1,7 @@
 /* sha1.c - Functions to compute SHA1 message digest of files or
    memory blocks according to the NIST specification FIPS-180-1.
 
-   Copyright (C) 2000-2001, 2003-2006, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2000-2001, 2003-2006, 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/sha1.c b/lib/sha1.c
index 5a18213edc..80f0b7a331 100644
--- a/lib/sha1.c
+++ b/lib/sha1.c
@@ -1,7 +1,7 @@
 /* sha1.c - Functions to compute SHA1 message digest of files or
    memory blocks according to the NIST specification FIPS-180-1.
 
-   Copyright (C) 2000-2001, 2003-2006, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2000-2001, 2003-2006, 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/sha1.h b/lib/sha1.h
index bc3470a508..5a58b567ce 100644
--- a/lib/sha1.h
+++ b/lib/sha1.h
@@ -1,6 +1,6 @@
 /* Declarations of functions and data types used for SHA1 sum
    library functions.
-   Copyright (C) 2000-2001, 2003, 2005-2006, 2008-2022 Free Software
+   Copyright (C) 2000-2001, 2003, 2005-2006, 2008-2023 Free Software
    Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/sha256-stream.c b/lib/sha256-stream.c
index c2e6398980..0e83380aa7 100644
--- a/lib/sha256-stream.c
+++ b/lib/sha256-stream.c
@@ -1,7 +1,7 @@
 /* sha256.c - Functions to compute SHA256 and SHA224 message digest of files or
    memory blocks according to the NIST specification FIPS-180-2.
 
-   Copyright (C) 2005-2006, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2006, 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/sha256.c b/lib/sha256.c
index 60cd763612..e5fea02bc2 100644
--- a/lib/sha256.c
+++ b/lib/sha256.c
@@ -1,7 +1,7 @@
 /* sha256.c - Functions to compute SHA256 and SHA224 message digest of files or
    memory blocks according to the NIST specification FIPS-180-2.
 
-   Copyright (C) 2005-2006, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2006, 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/sha256.h b/lib/sha256.h
index 533173a59e..2879477e89 100644
--- a/lib/sha256.h
+++ b/lib/sha256.h
@@ -1,6 +1,6 @@
 /* Declarations of functions and data types used for SHA256 and SHA224 sum
    library functions.
-   Copyright (C) 2005-2006, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2006, 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/sha512-stream.c b/lib/sha512-stream.c
index 78fa08196e..5cf864043f 100644
--- a/lib/sha512-stream.c
+++ b/lib/sha512-stream.c
@@ -1,7 +1,7 @@
 /* sha512.c - Functions to compute SHA512 and SHA384 message digest of files or
    memory blocks according to the NIST specification FIPS-180-2.
 
-   Copyright (C) 2005-2006, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2006, 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/sha512.c b/lib/sha512.c
index fd17a7dc76..8ca7fa319f 100644
--- a/lib/sha512.c
+++ b/lib/sha512.c
@@ -1,7 +1,7 @@
 /* sha512.c - Functions to compute SHA512 and SHA384 message digest of files or
    memory blocks according to the NIST specification FIPS-180-2.
 
-   Copyright (C) 2005-2006, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2006, 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/sha512.h b/lib/sha512.h
index 1eb1870227..e3a98a2644 100644
--- a/lib/sha512.h
+++ b/lib/sha512.h
@@ -1,6 +1,6 @@
 /* Declarations of functions and data types used for SHA512 and SHA384 sum
    library functions.
-   Copyright (C) 2005-2006, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2006, 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/shutdown.c b/lib/shutdown.c
index 170d8710e5..530d9e691d 100644
--- a/lib/shutdown.c
+++ b/lib/shutdown.c
@@ -1,6 +1,6 @@
 /* shutdown.c --- wrappers for Windows shutdown function
 
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/sig-handler.c b/lib/sig-handler.c
index 0ab63ec138..5ea345fc50 100644
--- a/lib/sig-handler.c
+++ b/lib/sig-handler.c
@@ -1,6 +1,6 @@
 /* Convenience declarations when working with <signal.h>.
 
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/sig-handler.h b/lib/sig-handler.h
index 1ca8d542bb..3ead5fabe6 100644
--- a/lib/sig-handler.h
+++ b/lib/sig-handler.h
@@ -1,6 +1,6 @@
 /* Convenience declarations when working with <signal.h>.
 
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/sig2str.c b/lib/sig2str.c
index 8e2fc0c075..c5219caaae 100644
--- a/lib/sig2str.c
+++ b/lib/sig2str.c
@@ -1,6 +1,6 @@
 /* sig2str.c -- convert between signal names and numbers
 
-   Copyright (C) 2002, 2004, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2004, 2006, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/sig2str.h b/lib/sig2str.h
index a45af7f968..1e5253658e 100644
--- a/lib/sig2str.h
+++ b/lib/sig2str.h
@@ -1,6 +1,6 @@
 /* sig2str.h -- convert between signal names and numbers
 
-   Copyright (C) 2002, 2005, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2005, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/sigabbrev_np.c b/lib/sigabbrev_np.c
index 5535139d4f..193a307705 100644
--- a/lib/sigabbrev_np.c
+++ b/lib/sigabbrev_np.c
@@ -1,5 +1,5 @@
 /* Abbreviated name of signals.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/sigaction.c b/lib/sigaction.c
index 953a6cae37..19f7665734 100644
--- a/lib/sigaction.c
+++ b/lib/sigaction.c
@@ -1,5 +1,5 @@
 /* POSIX compatible signal blocking.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
    Written by Eric Blake <ebb9@byu.net>, 2008.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/sigdescr_np.c b/lib/sigdescr_np.c
index 652bc8d75b..fc8a4ad47a 100644
--- a/lib/sigdescr_np.c
+++ b/lib/sigdescr_np.c
@@ -1,5 +1,5 @@
 /* English descriptions of signals.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/siglist.h b/lib/siglist.h
index f66bac16ef..ecf17a6661 100644
--- a/lib/siglist.h
+++ b/lib/siglist.h
@@ -1,5 +1,5 @@
 /* Canonical list of all signal names.
-   Copyright (C) 1996-1999, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 1996-1999, 2008-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/signal.in.h b/lib/signal.in.h
index c0d4848db0..fea12e6572 100644
--- a/lib/signal.in.h
+++ b/lib/signal.in.h
@@ -1,6 +1,6 @@
 /* A GNU-like <signal.h>.
 
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/signbitd.c b/lib/signbitd.c
index 776dd732bb..706ea39441 100644
--- a/lib/signbitd.c
+++ b/lib/signbitd.c
@@ -1,5 +1,5 @@
 /* signbit() macro: Determine the sign bit of a floating-point number.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/signbitf.c b/lib/signbitf.c
index 0adf0011a4..c25bb64a0d 100644
--- a/lib/signbitf.c
+++ b/lib/signbitf.c
@@ -1,5 +1,5 @@
 /* signbit() macro: Determine the sign bit of a floating-point number.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/signbitl.c b/lib/signbitl.c
index 865d276521..9d459caf87 100644
--- a/lib/signbitl.c
+++ b/lib/signbitl.c
@@ -1,5 +1,5 @@
 /* signbit() macro: Determine the sign bit of a floating-point number.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/sigpipe-die.c b/lib/sigpipe-die.c
index 6ce7c3ede6..3202eac4cd 100644
--- a/lib/sigpipe-die.c
+++ b/lib/sigpipe-die.c
@@ -1,5 +1,5 @@
 /* Report a SIGPIPE signal and exit.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/sigpipe-die.h b/lib/sigpipe-die.h
index 4419b6d403..1917d8cff0 100644
--- a/lib/sigpipe-die.h
+++ b/lib/sigpipe-die.h
@@ -1,5 +1,5 @@
 /* Report a SIGPIPE signal and exit.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/sigprocmask.c b/lib/sigprocmask.c
index a805da66e8..943383e23a 100644
--- a/lib/sigprocmask.c
+++ b/lib/sigprocmask.c
@@ -1,5 +1,5 @@
 /* POSIX compatible signal blocking.
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/sigsegv.c b/lib/sigsegv.c
index da64d7d0b6..14f3a4650b 100644
--- a/lib/sigsegv.c
+++ b/lib/sigsegv.c
@@ -1,5 +1,5 @@
 /* Page fault handling library.
-   Copyright (C) 1993-2022 Free Software Foundation, Inc.
+   Copyright (C) 1993-2023 Free Software Foundation, Inc.
    Copyright (C) 2018  Nylon Chen <nylon7@andestech.com>
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/sigsegv.in.h b/lib/sigsegv.in.h
index ba30c34a31..097041f1ba 100644
--- a/lib/sigsegv.in.h
+++ b/lib/sigsegv.in.h
@@ -1,5 +1,5 @@
 /* Page fault handling library.
-   Copyright (C) 1998-2022 Free Software Foundation, Inc.
+   Copyright (C) 1998-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/simple-atomic.c b/lib/simple-atomic.c
index 1081f9c50b..4e52447ed6 100644
--- a/lib/simple-atomic.c
+++ b/lib/simple-atomic.c
@@ -1,5 +1,5 @@
 /* Simple atomic operations for multithreading.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/simple-atomic.h b/lib/simple-atomic.h
index da4d90c48c..9180ea6a66 100644
--- a/lib/simple-atomic.h
+++ b/lib/simple-atomic.h
@@ -1,5 +1,5 @@
 /* Simple atomic operations for multithreading.
-   Copyright (C) 2021-2022 Free Software Foundation, Inc.
+   Copyright (C) 2021-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/sincosl.c b/lib/sincosl.c
index 9bbc679051..6804604fe1 100644
--- a/lib/sincosl.c
+++ b/lib/sincosl.c
@@ -1,5 +1,5 @@
 /* Quad-precision floating point trigonometric functions on <-pi/4,pi/4>.
-   Copyright (C) 1999, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Jakub Jelinek <jj@ultra.linux.cz>
 
diff --git a/lib/sinf.c b/lib/sinf.c
index 5e70d87319..e2c7f92aa7 100644
--- a/lib/sinf.c
+++ b/lib/sinf.c
@@ -1,5 +1,5 @@
 /* Sine function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/sinhf.c b/lib/sinhf.c
index 99631ddb77..db1ee4b7ba 100644
--- a/lib/sinhf.c
+++ b/lib/sinhf.c
@@ -1,5 +1,5 @@
 /* Hyperbolic sine function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/sinl.c b/lib/sinl.c
index d28e1f6e16..9ea4e6f31a 100644
--- a/lib/sinl.c
+++ b/lib/sinl.c
@@ -1,6 +1,6 @@
 /* sin (sine) function with 'long double' argument.
 
-   Copyright (C) 2003-2022 Free Software Foundation, Inc.
+   Copyright (C) 2003-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/size_max.h b/lib/size_max.h
index dee2b8eeaa..48af025055 100644
--- a/lib/size_max.h
+++ b/lib/size_max.h
@@ -1,5 +1,5 @@
 /* size_max.h -- declare SIZE_MAX through system headers
-   Copyright (C) 2005-2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2006, 2009-2023 Free Software Foundation, Inc.
    Written by Simon Josefsson.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/sleep.c b/lib/sleep.c
index 80431c1081..37c1213cd8 100644
--- a/lib/sleep.c
+++ b/lib/sleep.c
@@ -1,5 +1,5 @@
 /* Pausing execution of the current thread.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2007.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/sm3-stream.c b/lib/sm3-stream.c
index dc976bd128..adca9637c2 100644
--- a/lib/sm3-stream.c
+++ b/lib/sm3-stream.c
@@ -5,7 +5,7 @@
    SM3 cryptographic hash algorithm.
    <http://www.sca.gov.cn/sca/xwdt/2010-12/17/content_1002389.shtml>
 
-   Copyright (C) 2017-2022 Free Software Foundation, Inc.
+   Copyright (C) 2017-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/sm3.c b/lib/sm3.c
index a7402906b1..dc1280207d 100644
--- a/lib/sm3.c
+++ b/lib/sm3.c
@@ -5,7 +5,7 @@
    SM3 cryptographic hash algorithm.
    <http://www.sca.gov.cn/sca/xwdt/2010-12/17/content_1002389.shtml>
 
-   Copyright (C) 2017-2022 Free Software Foundation, Inc.
+   Copyright (C) 2017-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/sm3.h b/lib/sm3.h
index 2efe800a12..4ca7f7a103 100644
--- a/lib/sm3.h
+++ b/lib/sm3.h
@@ -1,6 +1,6 @@
 /* Declarations of functions and data types used for SM3 sum library
    function.
-   Copyright (C) 2017-2022 Free Software Foundation, Inc.
+   Copyright (C) 2017-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/snprintf.c b/lib/snprintf.c
index 3d87854e9d..cdff314993 100644
--- a/lib/snprintf.c
+++ b/lib/snprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 2004, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2004, 2006-2023 Free Software Foundation, Inc.
    Written by Simon Josefsson and Paul Eggert.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/socket.c b/lib/socket.c
index 49e013c7aa..7ad6eb95fa 100644
--- a/lib/socket.c
+++ b/lib/socket.c
@@ -1,6 +1,6 @@
 /* socket.c --- wrappers for Windows socket function
 
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/sockets.c b/lib/sockets.c
index 31b4302968..ca99db8b2f 100644
--- a/lib/sockets.c
+++ b/lib/sockets.c
@@ -1,6 +1,6 @@
 /* sockets.c --- wrappers for Windows socket functions
 
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/sockets.h b/lib/sockets.h
index 75e49fce08..a0b1601d6b 100644
--- a/lib/sockets.h
+++ b/lib/sockets.h
@@ -1,6 +1,6 @@
 /* sockets.h - wrappers for Windows socket functions
 
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/spawn-pipe.c b/lib/spawn-pipe.c
index ac803f48c4..d2d21e6e8e 100644
--- a/lib/spawn-pipe.c
+++ b/lib/spawn-pipe.c
@@ -1,5 +1,5 @@
 /* Creation of subprocesses, communicating via pipes.
-   Copyright (C) 2001-2004, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2004, 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <haible@clisp.cons.org>, 2001.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/spawn-pipe.h b/lib/spawn-pipe.h
index d25988051f..4aa778d1bd 100644
--- a/lib/spawn-pipe.h
+++ b/lib/spawn-pipe.h
@@ -1,5 +1,5 @@
 /* Creation of subprocesses, communicating via pipes.
-   Copyright (C) 2001-2003, 2006, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2003, 2006, 2008-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <haible@clisp.cons.org>, 2001.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/spawn.c b/lib/spawn.c
index bb2308dfcf..fc78000227 100644
--- a/lib/spawn.c
+++ b/lib/spawn.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2000, 2009-2022 Free Software Foundation, Inc.
+/* Copyright (C) 2000, 2009-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/spawn.in.h b/lib/spawn.in.h
index c1acf60430..38cdf09912 100644
--- a/lib/spawn.in.h
+++ b/lib/spawn.in.h
@@ -1,5 +1,5 @@
 /* Definitions for POSIX spawn interface.
-   Copyright (C) 2000, 2003-2004, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2000, 2003-2004, 2008-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/spawn_faction_addchdir.c b/lib/spawn_faction_addchdir.c
index d79876962e..cf9287a45c 100644
--- a/lib/spawn_faction_addchdir.c
+++ b/lib/spawn_faction_addchdir.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2018-2022 Free Software Foundation, Inc.
+/* Copyright (C) 2018-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/spawn_faction_addclose.c b/lib/spawn_faction_addclose.c
index 7e7cd6c7e5..c87a23794b 100644
--- a/lib/spawn_faction_addclose.c
+++ b/lib/spawn_faction_addclose.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2000, 2009-2022 Free Software Foundation, Inc.
+/* Copyright (C) 2000, 2009-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/spawn_faction_adddup2.c b/lib/spawn_faction_adddup2.c
index 8d257ae26b..27f4aa3148 100644
--- a/lib/spawn_faction_adddup2.c
+++ b/lib/spawn_faction_adddup2.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2000, 2009-2022 Free Software Foundation, Inc.
+/* Copyright (C) 2000, 2009-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/spawn_faction_addfchdir.c b/lib/spawn_faction_addfchdir.c
index 0ec01b97ad..0a2cf949b3 100644
--- a/lib/spawn_faction_addfchdir.c
+++ b/lib/spawn_faction_addfchdir.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2018-2022 Free Software Foundation, Inc.
+/* Copyright (C) 2018-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/spawn_faction_addopen.c b/lib/spawn_faction_addopen.c
index 8ae9b955e7..fa3e1cb494 100644
--- a/lib/spawn_faction_addopen.c
+++ b/lib/spawn_faction_addopen.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2000, 2009-2022 Free Software Foundation, Inc.
+/* Copyright (C) 2000, 2009-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/spawn_faction_destroy.c b/lib/spawn_faction_destroy.c
index 7ede0a836a..912ce9f491 100644
--- a/lib/spawn_faction_destroy.c
+++ b/lib/spawn_faction_destroy.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2000, 2009-2022 Free Software Foundation, Inc.
+/* Copyright (C) 2000, 2009-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/spawn_faction_init.c b/lib/spawn_faction_init.c
index 502540c5a6..12089d9ded 100644
--- a/lib/spawn_faction_init.c
+++ b/lib/spawn_faction_init.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2000, 2009-2022 Free Software Foundation, Inc.
+/* Copyright (C) 2000, 2009-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/spawn_int.h b/lib/spawn_int.h
index 93f2b751fe..1cf23f0f8e 100644
--- a/lib/spawn_int.h
+++ b/lib/spawn_int.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2000, 2008-2022 Free Software Foundation, Inc.
+/* Copyright (C) 2000, 2008-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/spawnattr_destroy.c b/lib/spawnattr_destroy.c
index 50552c8346..06b6ca606e 100644
--- a/lib/spawnattr_destroy.c
+++ b/lib/spawnattr_destroy.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2000, 2009-2022 Free Software Foundation, Inc.
+/* Copyright (C) 2000, 2009-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/spawnattr_getdefault.c b/lib/spawnattr_getdefault.c
index a60a91c6f8..f79c463774 100644
--- a/lib/spawnattr_getdefault.c
+++ b/lib/spawnattr_getdefault.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2000, 2009-2022 Free Software Foundation, Inc.
+/* Copyright (C) 2000, 2009-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/spawnattr_getflags.c b/lib/spawnattr_getflags.c
index 0e1365e31d..39b9f38f1c 100644
--- a/lib/spawnattr_getflags.c
+++ b/lib/spawnattr_getflags.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2000, 2009-2022 Free Software Foundation, Inc.
+/* Copyright (C) 2000, 2009-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/spawnattr_getpgroup.c b/lib/spawnattr_getpgroup.c
index 8fce329905..95dc1983bf 100644
--- a/lib/spawnattr_getpgroup.c
+++ b/lib/spawnattr_getpgroup.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2000, 2009-2022 Free Software Foundation, Inc.
+/* Copyright (C) 2000, 2009-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/spawnattr_getschedparam.c b/lib/spawnattr_getschedparam.c
index 40cd478190..521c650eba 100644
--- a/lib/spawnattr_getschedparam.c
+++ b/lib/spawnattr_getschedparam.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2000, 2008-2022 Free Software Foundation, Inc.
+/* Copyright (C) 2000, 2008-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/spawnattr_getschedpolicy.c b/lib/spawnattr_getschedpolicy.c
index 453bfc9cf8..b66b4868ba 100644
--- a/lib/spawnattr_getschedpolicy.c
+++ b/lib/spawnattr_getschedpolicy.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2000, 2009-2022 Free Software Foundation, Inc.
+/* Copyright (C) 2000, 2009-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/spawnattr_getsigmask.c b/lib/spawnattr_getsigmask.c
index 5121a757bd..68188746f3 100644
--- a/lib/spawnattr_getsigmask.c
+++ b/lib/spawnattr_getsigmask.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2000, 2009-2022 Free Software Foundation, Inc.
+/* Copyright (C) 2000, 2009-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/spawnattr_init.c b/lib/spawnattr_init.c
index 0ff8eaabbb..7a75af12c9 100644
--- a/lib/spawnattr_init.c
+++ b/lib/spawnattr_init.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2000, 2009-2022 Free Software Foundation, Inc.
+/* Copyright (C) 2000, 2009-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/spawnattr_setdefault.c b/lib/spawnattr_setdefault.c
index 8db1007bdf..03eed3bf2a 100644
--- a/lib/spawnattr_setdefault.c
+++ b/lib/spawnattr_setdefault.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2000, 2009-2022 Free Software Foundation, Inc.
+/* Copyright (C) 2000, 2009-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/spawnattr_setflags.c b/lib/spawnattr_setflags.c
index 9ddcf62bc3..6eaef6445b 100644
--- a/lib/spawnattr_setflags.c
+++ b/lib/spawnattr_setflags.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2000, 2004, 2009-2022 Free Software Foundation, Inc.
+/* Copyright (C) 2000, 2004, 2009-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/spawnattr_setpgroup.c b/lib/spawnattr_setpgroup.c
index 78d7b93c94..dea8d3ba71 100644
--- a/lib/spawnattr_setpgroup.c
+++ b/lib/spawnattr_setpgroup.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2000, 2009-2022 Free Software Foundation, Inc.
+/* Copyright (C) 2000, 2009-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/spawnattr_setschedparam.c b/lib/spawnattr_setschedparam.c
index 99bf1fcc66..3f1f8d294c 100644
--- a/lib/spawnattr_setschedparam.c
+++ b/lib/spawnattr_setschedparam.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2000, 2009-2022 Free Software Foundation, Inc.
+/* Copyright (C) 2000, 2009-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/spawnattr_setschedpolicy.c b/lib/spawnattr_setschedpolicy.c
index 23cd26bf99..0c758d1d20 100644
--- a/lib/spawnattr_setschedpolicy.c
+++ b/lib/spawnattr_setschedpolicy.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2000, 2009-2022 Free Software Foundation, Inc.
+/* Copyright (C) 2000, 2009-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/spawnattr_setsigmask.c b/lib/spawnattr_setsigmask.c
index ea05b34ecc..a60cd54ff8 100644
--- a/lib/spawnattr_setsigmask.c
+++ b/lib/spawnattr_setsigmask.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2000, 2009-2022 Free Software Foundation, Inc.
+/* Copyright (C) 2000, 2009-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/spawni.c b/lib/spawni.c
index a5081fd45b..cc9511fdd8 100644
--- a/lib/spawni.c
+++ b/lib/spawni.c
@@ -1,5 +1,5 @@
 /* Guts of POSIX spawn interface.  Generic POSIX.1 version.
-   Copyright (C) 2000-2006, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2000-2006, 2008-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/spawnp.c b/lib/spawnp.c
index 27d9e1692e..f8af667eb9 100644
--- a/lib/spawnp.c
+++ b/lib/spawnp.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2000, 2009-2022 Free Software Foundation, Inc.
+/* Copyright (C) 2000, 2009-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/sprintf.c b/lib/sprintf.c
index a311aab67f..b234ab1526 100644
--- a/lib/sprintf.c
+++ b/lib/sprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 2004, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2004, 2006-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/sqrtf.c b/lib/sqrtf.c
index 039f5ec113..f1c4975de1 100644
--- a/lib/sqrtf.c
+++ b/lib/sqrtf.c
@@ -1,5 +1,5 @@
 /* Square root.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/sqrtl.c b/lib/sqrtl.c
index 7206411d7c..79c50e54d1 100644
--- a/lib/sqrtl.c
+++ b/lib/sqrtl.c
@@ -1,7 +1,7 @@
 /* Emulation for sqrtl.
    Contributed by Paolo Bonzini
 
-   Copyright 2002-2003, 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright 2002-2003, 2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is part of gnulib.
 
diff --git a/lib/ssfmalloc-bitmap.h b/lib/ssfmalloc-bitmap.h
index 5e0090321e..7b0963cd6a 100644
--- a/lib/ssfmalloc-bitmap.h
+++ b/lib/ssfmalloc-bitmap.h
@@ -1,6 +1,6 @@
 /* Simple and straight-forward malloc implementation (front end).
 
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/ssfmalloc.h b/lib/ssfmalloc.h
index b8f2a09d9b..510a08d400 100644
--- a/lib/ssfmalloc.h
+++ b/lib/ssfmalloc.h
@@ -1,6 +1,6 @@
 /* Simple and straight-forward malloc implementation (front end).
 
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/stack.h b/lib/stack.h
index 18e23fdaf9..7a1abafc9c 100644
--- a/lib/stack.h
+++ b/lib/stack.h
@@ -1,5 +1,5 @@
 /* Type-safe stack data type.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/stackvma.c b/lib/stackvma.c
index aab3575c4c..4408ca8e15 100644
--- a/lib/stackvma.c
+++ b/lib/stackvma.c
@@ -1,5 +1,5 @@
 /* Determine the virtual memory area of a given address.
-   Copyright (C) 2002-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002-2023 Free Software Foundation, Inc.
    Copyright (C) 2003-2006  Paolo Bonzini <bonzini@gnu.org>
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/stackvma.h b/lib/stackvma.h
index b3a92d1d47..2ddca87b59 100644
--- a/lib/stackvma.h
+++ b/lib/stackvma.h
@@ -1,5 +1,5 @@
 /* Determine the virtual memory area of a given address.
-   Copyright (C) 2002-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002-2023 Free Software Foundation, Inc.
    Copyright (C) 2003-2006  Paolo Bonzini <bonzini@gnu.org>
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/stat-macros.h b/lib/stat-macros.h
index e131a18426..ece22a53a9 100644
--- a/lib/stat-macros.h
+++ b/lib/stat-macros.h
@@ -1,6 +1,6 @@
 /* stat-related macros
 
-   Copyright (C) 1993-2022 Free Software Foundation, Inc.
+   Copyright (C) 1993-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published
diff --git a/lib/stat-size.h b/lib/stat-size.h
index 98cb11ea3e..48f0d3c356 100644
--- a/lib/stat-size.h
+++ b/lib/stat-size.h
@@ -1,5 +1,5 @@
 /* macros useful in interpreting size-related values in struct stat.
-   Copyright (C) 1989, 1991-2022 Free Software Foundation, Inc.
+   Copyright (C) 1989, 1991-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/stat-time.c b/lib/stat-time.c
index 3d48a2b5b0..bc282232ab 100644
--- a/lib/stat-time.c
+++ b/lib/stat-time.c
@@ -1,6 +1,6 @@
 /* stat-related time functions.
 
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/stat-time.h b/lib/stat-time.h
index b661196ea5..92aa1e64e2 100644
--- a/lib/stat-time.h
+++ b/lib/stat-time.h
@@ -1,6 +1,6 @@
 /* stat-related time functions.
 
-   Copyright (C) 2005, 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005, 2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/stat-w32.c b/lib/stat-w32.c
index e61b75c6e9..2f01197584 100644
--- a/lib/stat-w32.c
+++ b/lib/stat-w32.c
@@ -1,5 +1,5 @@
 /* Core of implementation of fstat and stat for native Windows.
-   Copyright (C) 2017-2022 Free Software Foundation, Inc.
+   Copyright (C) 2017-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/stat-w32.h b/lib/stat-w32.h
index 0f79d61417..c6738749df 100644
--- a/lib/stat-w32.h
+++ b/lib/stat-w32.h
@@ -1,5 +1,5 @@
 /* Core of implementation of fstat and stat for native Windows.
-   Copyright (C) 2017-2022 Free Software Foundation, Inc.
+   Copyright (C) 2017-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/stat.c b/lib/stat.c
index adb6123352..7987e26583 100644
--- a/lib/stat.c
+++ b/lib/stat.c
@@ -1,5 +1,5 @@
 /* Work around platform bugs in stat.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/statat.c b/lib/statat.c
index bf96d3b481..4c8e2fb15e 100644
--- a/lib/statat.c
+++ b/lib/statat.c
@@ -1,6 +1,6 @@
 /* Return info about a file at a directory.
 
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published
diff --git a/lib/stdalign.in.h b/lib/stdalign.in.h
index 58fd245c62..17357810c7 100644
--- a/lib/stdalign.in.h
+++ b/lib/stdalign.in.h
@@ -1,6 +1,6 @@
 /* A substitute for ISO C11 <stdalign.h>.
 
-   Copyright 2011-2022 Free Software Foundation, Inc.
+   Copyright 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/stdarg.in.h b/lib/stdarg.in.h
index 95306bfb88..64baf87f04 100644
--- a/lib/stdarg.in.h
+++ b/lib/stdarg.in.h
@@ -1,5 +1,5 @@
 /* Substitute for and wrapper around <stdarg.h>.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/stdbool.in.h b/lib/stdbool.in.h
index 834c5f7e78..ca43b95a37 100644
--- a/lib/stdbool.in.h
+++ b/lib/stdbool.in.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2001-2003, 2006-2022 Free Software Foundation, Inc.
+/* Copyright (C) 2001-2003, 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <haible@clisp.cons.org>, 2001.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/stdckdint.in.h b/lib/stdckdint.in.h
index 762d3fdb79..71bab5f0c9 100644
--- a/lib/stdckdint.in.h
+++ b/lib/stdckdint.in.h
@@ -1,6 +1,6 @@
 /* stdckdint.h -- checked integer arithmetic
 
-   Copyright 2022 Free Software Foundation, Inc.
+   Copyright 2022-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify it
    under the terms of the GNU Lesser General Public License as published
diff --git a/lib/stddef.in.h b/lib/stddef.in.h
index 5c9a747d7d..6eadcc3d5a 100644
--- a/lib/stddef.in.h
+++ b/lib/stddef.in.h
@@ -1,6 +1,6 @@
 /* A substitute for POSIX 2008 <stddef.h>, for platforms that have issues.
 
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/stdint.in.h b/lib/stdint.in.h
index eaa7874f53..5ddc644b8e 100644
--- a/lib/stdint.in.h
+++ b/lib/stdint.in.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2001-2002, 2004-2022 Free Software Foundation, Inc.
+/* Copyright (C) 2001-2002, 2004-2023 Free Software Foundation, Inc.
    Written by Paul Eggert, Bruno Haible, Sam Steingold, Peter Burwood.
    This file is part of gnulib.
 
diff --git a/lib/stdio--.h b/lib/stdio--.h
index 1d4e9d28e7..741653abee 100644
--- a/lib/stdio--.h
+++ b/lib/stdio--.h
@@ -1,6 +1,6 @@
 /* Like stdio.h, but redefine some names to avoid glitches.
 
-   Copyright (C) 2005-2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2006, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/stdio-impl.h b/lib/stdio-impl.h
index ed32e6981a..81e7f83837 100644
--- a/lib/stdio-impl.h
+++ b/lib/stdio-impl.h
@@ -1,5 +1,5 @@
 /* Implementation details of FILE streams.
-   Copyright (C) 2007-2008, 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2008, 2010-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/stdio-read.c b/lib/stdio-read.c
index 85efa0d443..6e2984c5ec 100644
--- a/lib/stdio-read.c
+++ b/lib/stdio-read.c
@@ -1,5 +1,5 @@
 /* POSIX compatible FILE stream read function.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/stdio-safer.h b/lib/stdio-safer.h
index 204732ffac..9d404f1397 100644
--- a/lib/stdio-safer.h
+++ b/lib/stdio-safer.h
@@ -1,6 +1,6 @@
 /* Invoke stdio functions, but avoid some glitches.
 
-   Copyright (C) 2001, 2003, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001, 2003, 2006, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/stdio-write.c b/lib/stdio-write.c
index 82facf5450..9cf36cca4c 100644
--- a/lib/stdio-write.c
+++ b/lib/stdio-write.c
@@ -1,5 +1,5 @@
 /* POSIX compatible FILE stream write function.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2008.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/stdio.in.h b/lib/stdio.in.h
index 7b36dac2f5..59cbea3d47 100644
--- a/lib/stdio.in.h
+++ b/lib/stdio.in.h
@@ -1,6 +1,6 @@
 /* A GNU-like <stdio.h>.
 
-   Copyright (C) 2004, 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2004, 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/stdlib--.h b/lib/stdlib--.h
index a5f48084b8..097f726dd7 100644
--- a/lib/stdlib--.h
+++ b/lib/stdlib--.h
@@ -1,6 +1,6 @@
 /* Like stdlib.h, but redefine some names to avoid glitches.
 
-   Copyright (C) 2005-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/stdlib-safer.h b/lib/stdlib-safer.h
index 4c26db784e..e24ba6440d 100644
--- a/lib/stdlib-safer.h
+++ b/lib/stdlib-safer.h
@@ -1,6 +1,6 @@
 /* Invoke stdlib.h functions, but avoid some glitches.
 
-   Copyright (C) 2005, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/stdlib.in.h b/lib/stdlib.in.h
index 8e0a609f1f..b79e5f7096 100644
--- a/lib/stdlib.in.h
+++ b/lib/stdlib.in.h
@@ -1,6 +1,6 @@
 /* A GNU-like <stdlib.h>.
 
-   Copyright (C) 1995, 2001-2004, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 1995, 2001-2004, 2006-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/stdnoreturn.in.h b/lib/stdnoreturn.in.h
index 446e11b0b2..9a304ef05b 100644
--- a/lib/stdnoreturn.in.h
+++ b/lib/stdnoreturn.in.h
@@ -1,6 +1,6 @@
 /* A substitute for ISO C11 <stdnoreturn.h>.
 
-   Copyright 2012-2022 Free Software Foundation, Inc.
+   Copyright 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/stdopen.c b/lib/stdopen.c
index 841e410a7b..e9a8e49d79 100644
--- a/lib/stdopen.c
+++ b/lib/stdopen.c
@@ -1,6 +1,6 @@
 /* stdopen.c - ensure that the three standard file descriptors are in use
 
-   Copyright (C) 2005-2006, 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2006, 2019-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/stdopen.h b/lib/stdopen.h
index 6a9d83c6ad..c6111fab6e 100644
--- a/lib/stdopen.h
+++ b/lib/stdopen.h
@@ -1,5 +1,5 @@
 /* Arrange for stdin/stdout/stderr to be open.
-   Copyright (C) 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/stpcpy.c b/lib/stpcpy.c
index 434f84ae76..73c1eb786f 100644
--- a/lib/stpcpy.c
+++ b/lib/stpcpy.c
@@ -1,5 +1,5 @@
 /* stpcpy.c -- copy a string and return pointer to end of new string
-   Copyright (C) 1992, 1995, 1997-1998, 2006, 2009-2022 Free Software
+   Copyright (C) 1992, 1995, 1997-1998, 2006, 2009-2023 Free Software
    Foundation, Inc.
 
    NOTE: The canonical source of this file is maintained with the GNU C 
Library.
diff --git a/lib/stpncpy.c b/lib/stpncpy.c
index 0a720a0cc6..d1422a927d 100644
--- a/lib/stpncpy.c
+++ b/lib/stpncpy.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1993, 1995-1997, 2002-2003, 2005-2007, 2009-2022 Free Software
+/* Copyright (C) 1993, 1995-1997, 2002-2003, 2005-2007, 2009-2023 Free Software
  * Foundation, Inc.
 
    NOTE: The canonical source of this file is maintained with the GNU C 
Library.
diff --git a/lib/str-kmp.h b/lib/str-kmp.h
index 959ff65a3f..b8821f841b 100644
--- a/lib/str-kmp.h
+++ b/lib/str-kmp.h
@@ -1,6 +1,6 @@
 /* Substring search in a NUL terminated string of UNIT elements,
    using the Knuth-Morris-Pratt algorithm.
-   Copyright (C) 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2005.
 
    This file is free software.
diff --git a/lib/str-two-way.h b/lib/str-two-way.h
index b00017c0b4..dfe702241c 100644
--- a/lib/str-two-way.h
+++ b/lib/str-two-way.h
@@ -1,5 +1,5 @@
 /* Byte-wise substring search, using the Two-Way algorithm.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Written by Eric Blake <ebb9@byu.net>, 2008.
 
diff --git a/lib/strcasecmp.c b/lib/strcasecmp.c
index a85a2b1030..3a5ce3e1fd 100644
--- a/lib/strcasecmp.c
+++ b/lib/strcasecmp.c
@@ -1,5 +1,5 @@
 /* Case-insensitive string comparison function.
-   Copyright (C) 1998-1999, 2005-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1998-1999, 2005-2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/strcasestr.c b/lib/strcasestr.c
index e8d6084b06..8eea435cd8 100644
--- a/lib/strcasestr.c
+++ b/lib/strcasestr.c
@@ -1,5 +1,5 @@
 /* Case-insensitive searching in a string.
-   Copyright (C) 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2005.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/strchrnul.c b/lib/strchrnul.c
index 2141b3e19d..8724427b57 100644
--- a/lib/strchrnul.c
+++ b/lib/strchrnul.c
@@ -1,5 +1,5 @@
 /* Searching in a string.
-   Copyright (C) 2003, 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2003, 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/strchrnul.valgrind b/lib/strchrnul.valgrind
index 1cf50ec8db..d998366eb1 100644
--- a/lib/strchrnul.valgrind
+++ b/lib/strchrnul.valgrind
@@ -1,6 +1,6 @@
 # Suppress a valgrind message about use of uninitialized memory in strchrnul().
 
-# Copyright (C) 2008-2022 Free Software Foundation, Inc.
+# Copyright (C) 2008-2023 Free Software Foundation, Inc.
 #
 # This file is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Lesser General Public License as
diff --git a/lib/strcspn.c b/lib/strcspn.c
index 00c6608a52..08a2445c55 100644
--- a/lib/strcspn.c
+++ b/lib/strcspn.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991, 1994, 1996-1997, 2002-2003, 2005-2006, 2009-2022 Free
+/* Copyright (C) 1991, 1994, 1996-1997, 2002-2003, 2005-2006, 2009-2023 Free
  * Software Foundation, Inc.
 
    NOTE: The canonical source of this file is maintained with the GNU C 
Library.
diff --git a/lib/strdup.c b/lib/strdup.c
index 2a0df023c5..08c40d57ab 100644
--- a/lib/strdup.c
+++ b/lib/strdup.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991, 1996-1998, 2002-2004, 2006-2007, 2009-2022 Free Software
+/* Copyright (C) 1991, 1996-1998, 2002-2004, 2006-2007, 2009-2023 Free Software
    Foundation, Inc.
 
    This file is part of the GNU C Library.
diff --git a/lib/streq.h b/lib/streq.h
index 49f73c1b9e..712948eba7 100644
--- a/lib/streq.h
+++ b/lib/streq.h
@@ -1,5 +1,5 @@
 /* Optimized string comparison.
-   Copyright (C) 2001-2002, 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2002, 2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/strerror-override.c b/lib/strerror-override.c
index 6be1afdc83..cddaa4a9d4 100644
--- a/lib/strerror-override.c
+++ b/lib/strerror-override.c
@@ -1,6 +1,6 @@
 /* strerror-override.c --- POSIX compatible system error routine
 
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/strerror-override.h b/lib/strerror-override.h
index d010d27ca7..388cc28227 100644
--- a/lib/strerror-override.h
+++ b/lib/strerror-override.h
@@ -1,6 +1,6 @@
 /* strerror-override.h --- POSIX compatible system error routine
 
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/strerror.c b/lib/strerror.c
index 1019fe9eb6..d754f601ee 100644
--- a/lib/strerror.c
+++ b/lib/strerror.c
@@ -1,6 +1,6 @@
 /* strerror.c --- POSIX compatible system error routine
 
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/strerror_r.c b/lib/strerror_r.c
index b154c292b4..ffe1266921 100644
--- a/lib/strerror_r.c
+++ b/lib/strerror_r.c
@@ -1,6 +1,6 @@
 /* strerror_r.c --- POSIX compatible system error routine
 
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/strerrorname_np.c b/lib/strerrorname_np.c
index 08afa61a72..f8c4634c36 100644
--- a/lib/strerrorname_np.c
+++ b/lib/strerrorname_np.c
@@ -1,5 +1,5 @@
 /* Name of system error code.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/strfmon_l.c b/lib/strfmon_l.c
index 99996ceb90..a571a86c0e 100644
--- a/lib/strfmon_l.c
+++ b/lib/strfmon_l.c
@@ -1,5 +1,5 @@
 /* strfmon_l override.
-   Copyright (C) 2017-2022 Free Software Foundation, Inc.
+   Copyright (C) 2017-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/strftime-fixes.c b/lib/strftime-fixes.c
index 160650675f..4024cf245a 100644
--- a/lib/strftime-fixes.c
+++ b/lib/strftime-fixes.c
@@ -1,5 +1,5 @@
 /* Work around platform bugs in strftime.
-   Copyright (C) 2017-2022 Free Software Foundation, Inc.
+   Copyright (C) 2017-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/strftime.h b/lib/strftime.h
index a9847084f0..88c1f73928 100644
--- a/lib/strftime.h
+++ b/lib/strftime.h
@@ -1,6 +1,6 @@
 /* declarations for strftime.c
 
-   Copyright (C) 2002, 2004, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2004, 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/striconv.c b/lib/striconv.c
index d3da10a470..ec5e1a8291 100644
--- a/lib/striconv.c
+++ b/lib/striconv.c
@@ -1,5 +1,5 @@
 /* Charset conversion.
-   Copyright (C) 2001-2007, 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2007, 2010-2023 Free Software Foundation, Inc.
    Written by Bruno Haible and Simon Josefsson.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/striconv.h b/lib/striconv.h
index 5a184ac11b..d0eb8e642d 100644
--- a/lib/striconv.h
+++ b/lib/striconv.h
@@ -1,5 +1,5 @@
 /* Charset conversion.
-   Copyright (C) 2001-2004, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2004, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible and Simon Josefsson.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/striconveh.c b/lib/striconveh.c
index 01b4e327ef..0209dc6cf2 100644
--- a/lib/striconveh.c
+++ b/lib/striconveh.c
@@ -1,5 +1,5 @@
 /* Character set conversion with error handling.
-   Copyright (C) 2001-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2023 Free Software Foundation, Inc.
    Written by Bruno Haible and Simon Josefsson.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/striconveh.h b/lib/striconveh.h
index e152a046f2..7858b03ef6 100644
--- a/lib/striconveh.h
+++ b/lib/striconveh.h
@@ -1,5 +1,5 @@
 /* Character set conversion with error handling.
-   Copyright (C) 2001-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible and Simon Josefsson.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/striconveha.c b/lib/striconveha.c
index 66bff72172..ed88c84c19 100644
--- a/lib/striconveha.c
+++ b/lib/striconveha.c
@@ -1,5 +1,5 @@
 /* Character set conversion with error handling and autodetection.
-   Copyright (C) 2002, 2005, 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2005, 2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/striconveha.h b/lib/striconveha.h
index 4a4426fe77..d0b0f4ddb7 100644
--- a/lib/striconveha.h
+++ b/lib/striconveha.h
@@ -1,5 +1,5 @@
 /* Character set conversion with error handling and autodetection.
-   Copyright (C) 2002, 2005, 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2005, 2007-2023 Free Software Foundation, Inc.
    Written by Bruno Haible.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/string-buffer.c b/lib/string-buffer.c
index 58178909ae..62a5016bc5 100644
--- a/lib/string-buffer.c
+++ b/lib/string-buffer.c
@@ -1,5 +1,5 @@
 /* A buffer that accumulates a string by piecewise concatenation.
-   Copyright (C) 2021-2022 Free Software Foundation, Inc.
+   Copyright (C) 2021-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/string-buffer.h b/lib/string-buffer.h
index d988e1e501..8e2d80d16e 100644
--- a/lib/string-buffer.h
+++ b/lib/string-buffer.h
@@ -1,5 +1,5 @@
 /* A buffer that accumulates a string by piecewise concatenation.
-   Copyright (C) 2021-2022 Free Software Foundation, Inc.
+   Copyright (C) 2021-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/string.in.h b/lib/string.in.h
index 64a0ab19f7..e993b2fb6f 100644
--- a/lib/string.in.h
+++ b/lib/string.in.h
@@ -1,6 +1,6 @@
 /* A GNU-like <string.h>.
 
-   Copyright (C) 1995-1996, 2001-2022 Free Software Foundation, Inc.
+   Copyright (C) 1995-1996, 2001-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/strings.in.h b/lib/strings.in.h
index 2c31d2e14a..2cfe8b1670 100644
--- a/lib/strings.in.h
+++ b/lib/strings.in.h
@@ -1,6 +1,6 @@
 /* A substitute <strings.h>.
 
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/stripslash.c b/lib/stripslash.c
index aee89b78dc..fe46a9c109 100644
--- a/lib/stripslash.c
+++ b/lib/stripslash.c
@@ -1,6 +1,6 @@
 /* stripslash.c -- remove redundant trailing slashes from a file name
 
-   Copyright (C) 1990, 2001, 2003-2006, 2009-2022 Free Software Foundation,
+   Copyright (C) 1990, 2001, 2003-2006, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/strncasecmp.c b/lib/strncasecmp.c
index 35d215b9f4..c5c2cd3569 100644
--- a/lib/strncasecmp.c
+++ b/lib/strncasecmp.c
@@ -1,5 +1,5 @@
 /* strncasecmp.c -- case insensitive string comparator
-   Copyright (C) 1998-1999, 2005-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1998-1999, 2005-2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/strncat.c b/lib/strncat.c
index 1bfbc99165..aa5b242e28 100644
--- a/lib/strncat.c
+++ b/lib/strncat.c
@@ -1,5 +1,5 @@
 /* Concatenate strings.
-   Copyright (C) 1999, 2002, 2006, 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2010-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/strndup.c b/lib/strndup.c
index 72cbc57d47..5c1f32ff61 100644
--- a/lib/strndup.c
+++ b/lib/strndup.c
@@ -1,6 +1,6 @@
 /* A replacement function, for systems that lack strndup.
 
-   Copyright (C) 1996-1998, 2001-2003, 2005-2007, 2009-2022 Free Software
+   Copyright (C) 1996-1998, 2001-2003, 2005-2007, 2009-2023 Free Software
    Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/strnlen.c b/lib/strnlen.c
index c8fc69c6a9..09c010eac4 100644
--- a/lib/strnlen.c
+++ b/lib/strnlen.c
@@ -1,5 +1,5 @@
 /* Find the length of STRING, but scan at most MAXLEN characters.
-   Copyright (C) 2005-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Simon Josefsson.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/strnlen1.c b/lib/strnlen1.c
index c22f96b64d..25866c5e9f 100644
--- a/lib/strnlen1.c
+++ b/lib/strnlen1.c
@@ -1,5 +1,5 @@
 /* Find the length of STRING + 1, but scan at most MAXLEN bytes.
-   Copyright (C) 2005-2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2006, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/strnlen1.h b/lib/strnlen1.h
index d45dd91ed7..9e5b502bef 100644
--- a/lib/strnlen1.h
+++ b/lib/strnlen1.h
@@ -1,5 +1,5 @@
 /* Find the length of STRING + 1, but scan at most MAXLEN bytes.
-   Copyright (C) 2005, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/strpbrk.c b/lib/strpbrk.c
index d8d9994d9c..094427c83e 100644
--- a/lib/strpbrk.c
+++ b/lib/strpbrk.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991, 1994, 2000, 2002-2003, 2006, 2009-2022 Free Software
+/* Copyright (C) 1991, 1994, 2000, 2002-2003, 2006, 2009-2023 Free Software
    Foundation, Inc.
 
    NOTE: The canonical source of this file is maintained with the GNU C 
Library.
diff --git a/lib/strptime.c b/lib/strptime.c
index fd9ae8892a..23f9ec6deb 100644
--- a/lib/strptime.c
+++ b/lib/strptime.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002, 2004-2005, 2007, 2009-2022 Free Software Foundation,
+/* Copyright (C) 2002, 2004-2005, 2007, 2009-2023 Free Software Foundation,
    Inc.
    This file is part of the GNU C Library.
 
diff --git a/lib/strsep.c b/lib/strsep.c
index c05d7ebe2a..8e9708a38f 100644
--- a/lib/strsep.c
+++ b/lib/strsep.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2004, 2007, 2009-2022 Free Software Foundation, Inc.
+/* Copyright (C) 2004, 2007, 2009-2023 Free Software Foundation, Inc.
 
    Written by Yoann Vandoorselaere <yoann@prelude-ids.org>.
 
diff --git a/lib/strsignal.c b/lib/strsignal.c
index 4db5014c17..12f21de2fe 100644
--- a/lib/strsignal.c
+++ b/lib/strsignal.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991, 1994-2002, 2005, 2008-2022 Free Software Foundation,
+/* Copyright (C) 1991, 1994-2002, 2005, 2008-2023 Free Software Foundation,
    Inc.
    This file is part of the GNU C Library.
 
diff --git a/lib/strstr.c b/lib/strstr.c
index 65bf21b717..574f4d5089 100644
--- a/lib/strstr.c
+++ b/lib/strstr.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991-1994, 1996-1998, 2000, 2004, 2007-2022 Free Software
+/* Copyright (C) 1991-1994, 1996-1998, 2000, 2004, 2007-2023 Free Software
    Foundation, Inc.
    This file is part of the GNU C Library.
 
diff --git a/lib/strtod.c b/lib/strtod.c
index a2eada590f..63919f924d 100644
--- a/lib/strtod.c
+++ b/lib/strtod.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991-1992, 1997, 1999, 2003, 2006, 2008-2022 Free Software
+/* Copyright (C) 1991-1992, 1997, 1999, 2003, 2006, 2008-2023 Free Software
    Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/strtoimax.c b/lib/strtoimax.c
index 29d16d29ce..f7977e28e6 100644
--- a/lib/strtoimax.c
+++ b/lib/strtoimax.c
@@ -1,6 +1,6 @@
 /* Convert string representation of a number into an intmax_t value.
 
-   Copyright (C) 1999, 2001-2004, 2006, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2001-2004, 2006, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/strtok_r.c b/lib/strtok_r.c
index 021cfb842d..e01477c10b 100644
--- a/lib/strtok_r.c
+++ b/lib/strtok_r.c
@@ -1,5 +1,5 @@
 /* Reentrant string tokenizer.  Generic version.
-   Copyright (C) 1991, 1996-1999, 2001, 2004, 2007, 2009-2022 Free Software
+   Copyright (C) 1991, 1996-1999, 2001, 2004, 2007, 2009-2023 Free Software
    Foundation, Inc.
    This file is part of the GNU C Library.
 
diff --git a/lib/strtol.c b/lib/strtol.c
index 6c2e9333ab..d11269b262 100644
--- a/lib/strtol.c
+++ b/lib/strtol.c
@@ -1,6 +1,6 @@
 /* Convert string representation of a number into an integer value.
 
-   Copyright (C) 1991-1992, 1994-1999, 2003, 2005-2007, 2009-2022 Free Software
+   Copyright (C) 1991-1992, 1994-1999, 2003, 2005-2007, 2009-2023 Free Software
    Foundation, Inc.
 
    NOTE: The canonical source of this file is maintained with the GNU C
diff --git a/lib/strtold.c b/lib/strtold.c
index 0e825bf02d..3d83debf90 100644
--- a/lib/strtold.c
+++ b/lib/strtold.c
@@ -1,5 +1,5 @@
 /* Convert string to 'long double'.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/strtoll.c b/lib/strtoll.c
index acea42ee00..9fdfa19b22 100644
--- a/lib/strtoll.c
+++ b/lib/strtoll.c
@@ -1,5 +1,5 @@
 /* Function to parse a 'long long int' from text.
-   Copyright (C) 1995-1997, 1999, 2001, 2009-2022 Free Software Foundation,
+   Copyright (C) 1995-1997, 1999, 2001, 2009-2023 Free Software Foundation,
    Inc.
    This file is part of the GNU C Library.
 
diff --git a/lib/strtoul.c b/lib/strtoul.c
index 7408b54b01..2a360c75f9 100644
--- a/lib/strtoul.c
+++ b/lib/strtoul.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991, 1997, 2009-2022 Free Software Foundation, Inc.
+/* Copyright (C) 1991, 1997, 2009-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/strtoull.c b/lib/strtoull.c
index 84657b95a9..f05d34f0c1 100644
--- a/lib/strtoull.c
+++ b/lib/strtoull.c
@@ -1,5 +1,5 @@
 /* Function to parse an 'unsigned long long int' from text.
-   Copyright (C) 1995-1997, 1999, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1995-1997, 1999, 2009-2023 Free Software Foundation, Inc.
    NOTE: The canonical source of this file is maintained with the GNU C
    Library.  Bugs can be reported to bug-glibc@gnu.org.
 
diff --git a/lib/strtoumax.c b/lib/strtoumax.c
index 05a87fd912..3f9b0dc258 100644
--- a/lib/strtoumax.c
+++ b/lib/strtoumax.c
@@ -1,6 +1,6 @@
 /* Convert string representation of a number into a uintmax_t value.
 
-   Copyright (C) 1999-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/strverscmp.c b/lib/strverscmp.c
index 374f564a4e..21fb56f93f 100644
--- a/lib/strverscmp.c
+++ b/lib/strverscmp.c
@@ -1,5 +1,5 @@
 /* Compare strings while treating digits characters numerically.
-   Copyright (C) 1997-2022 Free Software Foundation, Inc.
+   Copyright (C) 1997-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Jean-François Bignolles <bignolle@ecoledoc.ibp.fr>, 1997.
 
diff --git a/lib/supersede.c b/lib/supersede.c
index 7fbd619fde..fd0be7f86d 100644
--- a/lib/supersede.c
+++ b/lib/supersede.c
@@ -1,6 +1,6 @@
 /* Open a file, without destroying an old file with the same name.
 
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/supersede.h b/lib/supersede.h
index 27eb7a13c4..30782abac9 100644
--- a/lib/supersede.h
+++ b/lib/supersede.h
@@ -1,6 +1,6 @@
 /* Open a file, without destroying an old file with the same name.
 
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/symlink.c b/lib/symlink.c
index 26310af7b1..b5009ae835 100644
--- a/lib/symlink.c
+++ b/lib/symlink.c
@@ -1,5 +1,5 @@
 /* Stub for symlink().
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/symlinkat.c b/lib/symlinkat.c
index 1346da8045..11eda8289a 100644
--- a/lib/symlinkat.c
+++ b/lib/symlinkat.c
@@ -1,5 +1,5 @@
 /* Create a symlink relative to an open directory.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/sys-limits.h b/lib/sys-limits.h
index d154f0b23c..0e9556d641 100644
--- a/lib/sys-limits.h
+++ b/lib/sys-limits.h
@@ -1,6 +1,6 @@
 /* System call limits
 
-   Copyright 2018-2022 Free Software Foundation, Inc.
+   Copyright 2018-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/sys_file.in.h b/lib/sys_file.in.h
index 1ae54f85a8..d05337ad42 100644
--- a/lib/sys_file.in.h
+++ b/lib/sys_file.in.h
@@ -1,6 +1,6 @@
 /* Provide a more complete sys/file.h.
 
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/sys_ioctl.in.h b/lib/sys_ioctl.in.h
index 7f1cdc86a1..26acd19c8d 100644
--- a/lib/sys_ioctl.in.h
+++ b/lib/sys_ioctl.in.h
@@ -1,5 +1,5 @@
 /* Substitute for and wrapper around <sys/ioctl.h>.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/sys_random.in.h b/lib/sys_random.in.h
index c91bcd2cd0..8dca132683 100644
--- a/lib/sys_random.in.h
+++ b/lib/sys_random.in.h
@@ -1,5 +1,5 @@
 /* Substitute for <sys/random.h>.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/sys_resource.in.h b/lib/sys_resource.in.h
index 02c4ac5926..b0af9aa289 100644
--- a/lib/sys_resource.in.h
+++ b/lib/sys_resource.in.h
@@ -1,5 +1,5 @@
 /* Substitute for <sys/resource.h>.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/sys_select.in.h b/lib/sys_select.in.h
index 860e957fe0..13440fa6f0 100644
--- a/lib/sys_select.in.h
+++ b/lib/sys_select.in.h
@@ -1,5 +1,5 @@
 /* Substitute for <sys/select.h>.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/sys_socket.c b/lib/sys_socket.c
index 0bfd60f2ff..b7388ceccf 100644
--- a/lib/sys_socket.c
+++ b/lib/sys_socket.c
@@ -1,6 +1,6 @@
 /* Inline functions for <sys/socket.h>.
 
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/sys_socket.in.h b/lib/sys_socket.in.h
index 637a248d15..6705593f4a 100644
--- a/lib/sys_socket.in.h
+++ b/lib/sys_socket.in.h
@@ -1,6 +1,6 @@
 /* Provide a sys/socket header file for systems lacking it (read: MinGW)
    and for systems where it is incomplete.
-   Copyright (C) 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2023 Free Software Foundation, Inc.
    Written by Simon Josefsson.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/sys_stat.in.h b/lib/sys_stat.in.h
index 0ec320f58c..096887c016 100644
--- a/lib/sys_stat.in.h
+++ b/lib/sys_stat.in.h
@@ -1,5 +1,5 @@
 /* Provide a more complete sys/stat.h header file.
-   Copyright (C) 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/sys_time.in.h b/lib/sys_time.in.h
index 87db1a8874..e833d55167 100644
--- a/lib/sys_time.in.h
+++ b/lib/sys_time.in.h
@@ -1,6 +1,6 @@
 /* Provide a more complete sys/time.h.
 
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/sys_times.in.h b/lib/sys_times.in.h
index 01b58a4acc..148dc60db9 100644
--- a/lib/sys_times.in.h
+++ b/lib/sys_times.in.h
@@ -1,5 +1,5 @@
 /* Provide a sys/times.h header file.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/sys_types.in.h b/lib/sys_types.in.h
index 698e88d632..082a6c674d 100644
--- a/lib/sys_types.in.h
+++ b/lib/sys_types.in.h
@@ -1,6 +1,6 @@
 /* Provide a more complete sys/types.h.
 
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/sys_uio.in.h b/lib/sys_uio.in.h
index 788d461f1e..64c4fb6dc7 100644
--- a/lib/sys_uio.in.h
+++ b/lib/sys_uio.in.h
@@ -1,5 +1,5 @@
 /* Substitute for <sys/uio.h>.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/sys_utsname.in.h b/lib/sys_utsname.in.h
index be5ecf09df..4420d94ef4 100644
--- a/lib/sys_utsname.in.h
+++ b/lib/sys_utsname.in.h
@@ -1,5 +1,5 @@
 /* Substitute for <sys/utsname.h>.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/sys_wait.in.h b/lib/sys_wait.in.h
index 7c48c2ef20..6454eb5ad7 100644
--- a/lib/sys_wait.in.h
+++ b/lib/sys_wait.in.h
@@ -1,5 +1,5 @@
 /* A POSIX-like <sys/wait.h>.
-   Copyright (C) 2001-2003, 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2003, 2005-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/sysexits.in.h b/lib/sysexits.in.h
index 9a65060ee6..c19e5e27b3 100644
--- a/lib/sysexits.in.h
+++ b/lib/sysexits.in.h
@@ -1,5 +1,5 @@
 /* exit() exit codes for some BSD system programs.
-   Copyright (C) 2003, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2003, 2006-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/system-quote.c b/lib/system-quote.c
index 02d20b1823..c08d2dcd53 100644
--- a/lib/system-quote.c
+++ b/lib/system-quote.c
@@ -1,5 +1,5 @@
 /* Quoting for a system command.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2012.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/system-quote.h b/lib/system-quote.h
index fb9b3b5e2c..2046c06a7e 100644
--- a/lib/system-quote.h
+++ b/lib/system-quote.h
@@ -1,5 +1,5 @@
 /* Quoting for a system command.
-   Copyright (C) 2001-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2012.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/tanf.c b/lib/tanf.c
index 8b295507db..1de06e1513 100644
--- a/lib/tanf.c
+++ b/lib/tanf.c
@@ -1,5 +1,5 @@
 /* Tangent function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/tanhf.c b/lib/tanhf.c
index 7b271901dd..97963b4ec8 100644
--- a/lib/tanhf.c
+++ b/lib/tanhf.c
@@ -1,5 +1,5 @@
 /* Hyperbolic tangent function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/tanl.c b/lib/tanl.c
index e2d95049e7..1cf4b05335 100644
--- a/lib/tanl.c
+++ b/lib/tanl.c
@@ -1,6 +1,6 @@
 /* tan (tangent) function with 'long double' argument.
 
-   Copyright (C) 2003-2022 Free Software Foundation, Inc.
+   Copyright (C) 2003-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/tcgetsid.c b/lib/tcgetsid.c
index a4c8e2a08a..a0f3720e63 100644
--- a/lib/tcgetsid.c
+++ b/lib/tcgetsid.c
@@ -1,5 +1,5 @@
 /* Determine the session ID of the controlling terminal of the current process.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/tempname.c b/lib/tempname.c
index dbff638f70..bf362db6e1 100644
--- a/lib/tempname.c
+++ b/lib/tempname.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991-2022 Free Software Foundation, Inc.
+/* Copyright (C) 1991-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/lib/tempname.h b/lib/tempname.h
index 5e3c5e1550..36a5138154 100644
--- a/lib/tempname.h
+++ b/lib/tempname.h
@@ -1,6 +1,6 @@
 /* Create a temporary file or directory.
 
-   Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/term-style-control.c b/lib/term-style-control.c
index 64a0e4e075..44074a84ac 100644
--- a/lib/term-style-control.c
+++ b/lib/term-style-control.c
@@ -1,5 +1,5 @@
 /* Terminal control for outputting styled text to a terminal.
-   Copyright (C) 2006-2008, 2017, 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2008, 2017, 2019-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2019.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/term-style-control.h b/lib/term-style-control.h
index 28623aacf5..3f853bb941 100644
--- a/lib/term-style-control.h
+++ b/lib/term-style-control.h
@@ -1,5 +1,5 @@
 /* Terminal control for outputting styled text to a terminal.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2019.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/termcap.h b/lib/termcap.h
index 859c8994ce..93d78e2227 100644
--- a/lib/termcap.h
+++ b/lib/termcap.h
@@ -1,5 +1,5 @@
 /* Information about terminal capabilities.
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/terminfo.h b/lib/terminfo.h
index d542ef2d55..0b6aacbb76 100644
--- a/lib/terminfo.h
+++ b/lib/terminfo.h
@@ -1,5 +1,5 @@
 /* Information about terminal capabilities.
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/termios.in.h b/lib/termios.in.h
index 32b7c5b3ef..aa3a7cc9d9 100644
--- a/lib/termios.in.h
+++ b/lib/termios.in.h
@@ -1,5 +1,5 @@
 /* Substitute for and wrapper around <termios.h>.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/textstyle.in.h b/lib/textstyle.in.h
index 1983183b02..111e1e10d3 100644
--- a/lib/textstyle.in.h
+++ b/lib/textstyle.in.h
@@ -1,5 +1,5 @@
 /* Dummy replacement for part of the public API of the libtextstyle library.
-   Copyright (C) 2006-2007, 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2007, 2019-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/thrd.c b/lib/thrd.c
index 865b59760e..bb0e10fc8b 100644
--- a/lib/thrd.c
+++ b/lib/thrd.c
@@ -1,5 +1,5 @@
 /* Creating and controlling ISO C 11 threads.
-   Copyright (C) 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/thread-optim.h b/lib/thread-optim.h
index dc1ad8622c..9a4c80af32 100644
--- a/lib/thread-optim.h
+++ b/lib/thread-optim.h
@@ -1,6 +1,6 @@
 /* Optimization of multithreaded code.
 
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/threads.in.h b/lib/threads.in.h
index 3bf02d00fe..b1e213fd2c 100644
--- a/lib/threads.in.h
+++ b/lib/threads.in.h
@@ -1,6 +1,6 @@
 /* An ISO C 11 compatible <threads.h>.
 
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/time-internal.h b/lib/time-internal.h
index c8a2a8ce6b..51423c94ca 100644
--- a/lib/time-internal.h
+++ b/lib/time-internal.h
@@ -1,6 +1,6 @@
 /* Time internal interface
 
-   Copyright 2015-2022 Free Software Foundation, Inc.
+   Copyright 2015-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/time.in.h b/lib/time.in.h
index aba2eda875..50c9b30b6b 100644
--- a/lib/time.in.h
+++ b/lib/time.in.h
@@ -1,6 +1,6 @@
 /* A more-standard <time.h>.
 
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/time_r.c b/lib/time_r.c
index d4b2275545..97be4fd054 100644
--- a/lib/time_r.c
+++ b/lib/time_r.c
@@ -1,6 +1,6 @@
 /* Reentrant time functions like localtime_r.
 
-   Copyright (C) 2003, 2006-2007, 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2003, 2006-2007, 2010-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/time_rz.c b/lib/time_rz.c
index 601ce5950e..da0d57b8b1 100644
--- a/lib/time_rz.c
+++ b/lib/time_rz.c
@@ -1,6 +1,6 @@
 /* Time zone functions such as tzalloc and localtime_rz
 
-   Copyright 2015-2022 Free Software Foundation, Inc.
+   Copyright 2015-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/times.c b/lib/times.c
index 68bc8e3c4b..3bcc38d9e0 100644
--- a/lib/times.c
+++ b/lib/times.c
@@ -1,6 +1,6 @@
 /* Get process times
 
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/timespec-add.c b/lib/timespec-add.c
index 0f270e5bc8..cb3017803b 100644
--- a/lib/timespec-add.c
+++ b/lib/timespec-add.c
@@ -1,6 +1,6 @@
 /* Add two struct timespec values.
 
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/timespec-sub.c b/lib/timespec-sub.c
index 36747833e3..822c283108 100644
--- a/lib/timespec-sub.c
+++ b/lib/timespec-sub.c
@@ -1,6 +1,6 @@
 /* Subtract two struct timespec values.
 
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/timespec.c b/lib/timespec.c
index 9d136cb803..5f7ffbdd45 100644
--- a/lib/timespec.c
+++ b/lib/timespec.c
@@ -1,6 +1,6 @@
 /* Inline functions for <timespec.h>.
 
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/timespec.h b/lib/timespec.h
index 9e358289a2..ba78647f09 100644
--- a/lib/timespec.h
+++ b/lib/timespec.h
@@ -1,6 +1,6 @@
 /* timespec -- System time interface
 
-   Copyright (C) 2000, 2002, 2004-2005, 2007, 2009-2022 Free Software
+   Copyright (C) 2000, 2002, 2004-2005, 2007, 2009-2023 Free Software
    Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/timespec_get.c b/lib/timespec_get.c
index 7cd841e8a0..80f9fab955 100644
--- a/lib/timespec_get.c
+++ b/lib/timespec_get.c
@@ -1,5 +1,5 @@
 /* timespec_get() function.
-   Copyright (C) 2021-2022 Free Software Foundation, Inc.
+   Copyright (C) 2021-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/timespec_getres.c b/lib/timespec_getres.c
index 7fbd23f875..38193d2a1b 100644
--- a/lib/timespec_getres.c
+++ b/lib/timespec_getres.c
@@ -1,5 +1,5 @@
 /* Get resolution of a time base.
-   Copyright 2021-2022 Free Software Foundation, Inc.
+   Copyright 2021-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/timevar.c b/lib/timevar.c
index d5ae3e8583..765f806f2f 100644
--- a/lib/timevar.c
+++ b/lib/timevar.c
@@ -1,6 +1,6 @@
 /* Timing variables for measuring compiler performance.
 
-   Copyright (C) 2000, 2002, 2004, 2006, 2009-2015, 2018-2022 Free Software
+   Copyright (C) 2000, 2002, 2004, 2006, 2009-2015, 2018-2023 Free Software
    Foundation, Inc.
 
    Contributed by Alex Samuel <samuel@codesourcery.com>
diff --git a/lib/timevar.def b/lib/timevar.def
index 349dfedf41..1d867a0556 100644
--- a/lib/timevar.def
+++ b/lib/timevar.def
@@ -1,7 +1,7 @@
 /* This file contains the definitions for timing variables used to -*- C -*-
    measure run-time performance of the compiler.
 
-   Copyright (C) 2002, 2007, 2009-2015, 2018-2022 Free Software Foundation,
+   Copyright (C) 2002, 2007, 2009-2015, 2018-2023 Free Software Foundation,
    Inc.
 
    Contributed by Akim Demaille <akim@freefriends.org>.
diff --git a/lib/timevar.h b/lib/timevar.h
index 35343063e8..cafa02407e 100644
--- a/lib/timevar.h
+++ b/lib/timevar.h
@@ -1,6 +1,6 @@
 /* Timing variables for measuring application performance.
 
-   Copyright (C) 2000, 2002, 2004, 2009-2015, 2018-2022 Free Software
+   Copyright (C) 2000, 2002, 2004, 2009-2015, 2018-2023 Free Software
    Foundation, Inc.
 
    Contributed by Alex Samuel <samuel@codesourcery.com>
diff --git a/lib/tmpdir.c b/lib/tmpdir.c
index 6d9a1f23d3..9c96a6972c 100644
--- a/lib/tmpdir.c
+++ b/lib/tmpdir.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1999, 2001-2002, 2006, 2009-2022 Free Software Foundation,
+/* Copyright (C) 1999, 2001-2002, 2006, 2009-2023 Free Software Foundation,
    Inc.
    This file is part of the GNU C Library.
 
diff --git a/lib/tmpdir.h b/lib/tmpdir.h
index f667f4a868..943d664c06 100644
--- a/lib/tmpdir.h
+++ b/lib/tmpdir.h
@@ -1,5 +1,5 @@
 /* Determine a temporary directory.
-   Copyright (C) 2001-2002, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2002, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/tmpfile-safer.c b/lib/tmpfile-safer.c
index 040e57965d..4d0607e590 100644
--- a/lib/tmpfile-safer.c
+++ b/lib/tmpfile-safer.c
@@ -1,5 +1,5 @@
 /* Invoke tmpfile, but avoid some glitches.
-   Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/tmpfile.c b/lib/tmpfile.c
index fadee566cc..419f9ffe40 100644
--- a/lib/tmpfile.c
+++ b/lib/tmpfile.c
@@ -1,5 +1,5 @@
 /* Create a temporary file.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/towctrans-impl.h b/lib/towctrans-impl.h
index 24a86f7952..e512d30694 100644
--- a/lib/towctrans-impl.h
+++ b/lib/towctrans-impl.h
@@ -1,5 +1,5 @@
 /* Convert a wide character using a case mapping.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/towctrans.c b/lib/towctrans.c
index 3810c3d075..4328d9a490 100644
--- a/lib/towctrans.c
+++ b/lib/towctrans.c
@@ -1,5 +1,5 @@
 /* Convert a wide character using a case mapping.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/tparm.c b/lib/tparm.c
index 1c625ad5df..9913a640c1 100644
--- a/lib/tparm.c
+++ b/lib/tparm.c
@@ -1,5 +1,5 @@
 /* Substitution of parameters in strings from terminal descriptions.
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/tputs.c b/lib/tputs.c
index e4d6854bf1..7a6a8d8bd3 100644
--- a/lib/tputs.c
+++ b/lib/tputs.c
@@ -1,5 +1,5 @@
 /* Output of string from terminal descriptions.
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/trigl.c b/lib/trigl.c
index fbeb84ed1b..483b387307 100644
--- a/lib/trigl.c
+++ b/lib/trigl.c
@@ -1,5 +1,5 @@
 /* Quad-precision floating point argument reduction.  -*- coding: utf-8 -*-
-   Copyright (C) 1999, 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2007, 2009-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Jakub Jelinek <jj@ultra.linux.cz>
 
diff --git a/lib/trigl.h b/lib/trigl.h
index 51439bc307..87b38c929b 100644
--- a/lib/trigl.h
+++ b/lib/trigl.h
@@ -1,7 +1,7 @@
 /* Declarations for sinl, cosl, tanl internal functions.  -*- coding: utf-8 -*-
    Contributed by Paolo Bonzini
 
-   Copyright 2002-2003, 2009-2022 Free Software Foundation, Inc.
+   Copyright 2002-2003, 2009-2023 Free Software Foundation, Inc.
 
    This file is part of gnulib.
 
diff --git a/lib/trim.c b/lib/trim.c
index def08eb355..162c43e1de 100644
--- a/lib/trim.c
+++ b/lib/trim.c
@@ -1,5 +1,5 @@
 /* Removes leading and/or trailing whitespaces
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/trim.h b/lib/trim.h
index b520e8080b..b558fb218a 100644
--- a/lib/trim.h
+++ b/lib/trim.h
@@ -1,5 +1,5 @@
 /* Removes leading and/or trailing whitespaces
-   Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/trunc.c b/lib/trunc.c
index be24c87806..acbef8a845 100644
--- a/lib/trunc.c
+++ b/lib/trunc.c
@@ -1,5 +1,5 @@
 /* Round towards zero.
-   Copyright (C) 2007, 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2010-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/truncate.c b/lib/truncate.c
index 9a18fa64cb..0541e346d3 100644
--- a/lib/truncate.c
+++ b/lib/truncate.c
@@ -1,5 +1,5 @@
 /* truncate emulations for native Windows.
-   Copyright (C) 2017-2022 Free Software Foundation, Inc.
+   Copyright (C) 2017-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/truncf.c b/lib/truncf.c
index 192a10097f..9a280f43d7 100644
--- a/lib/truncf.c
+++ b/lib/truncf.c
@@ -1,5 +1,5 @@
 /* Round towards zero.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/truncl.c b/lib/truncl.c
index 400c817788..55205dc9af 100644
--- a/lib/truncl.c
+++ b/lib/truncl.c
@@ -1,5 +1,5 @@
 /* Round towards zero.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/tsearch.c b/lib/tsearch.c
index 1ead2ad7fe..35b677a4c3 100644
--- a/lib/tsearch.c
+++ b/lib/tsearch.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1995-1997, 2000, 2006-2007, 2009-2022 Free Software
+/* Copyright (C) 1995-1997, 2000, 2006-2007, 2009-2023 Free Software
    Foundation, Inc.
    Contributed by Bernd Schmidt <crux@Pool.Informatik.RWTH-Aachen.DE>, 1997.
 
diff --git a/lib/tss.c b/lib/tss.c
index 20f472896c..9c030f3e85 100644
--- a/lib/tss.c
+++ b/lib/tss.c
@@ -1,5 +1,5 @@
 /* ISO C 11 thread-specific storage in multithreaded situations.
-   Copyright (C) 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/ttyname_r.c b/lib/ttyname_r.c
index 654c65f9aa..a435333deb 100644
--- a/lib/ttyname_r.c
+++ b/lib/ttyname_r.c
@@ -1,6 +1,6 @@
 /* Determine name of a terminal.
 
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/tzset.c b/lib/tzset.c
index 845d349629..88fc04798c 100644
--- a/lib/tzset.c
+++ b/lib/tzset.c
@@ -1,6 +1,6 @@
 /* Provide tzset for systems that don't have it or for which it's broken.
 
-   Copyright (C) 2001-2003, 2005-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2003, 2005-2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/u64.c b/lib/u64.c
index 0eefeae801..ca088b4546 100644
--- a/lib/u64.c
+++ b/lib/u64.c
@@ -1,6 +1,6 @@
 /* uint64_t-like operations that work even on hosts lacking uint64_t
 
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/u64.h b/lib/u64.h
index 1908e7c389..0353ad4d9a 100644
--- a/lib/u64.h
+++ b/lib/u64.h
@@ -1,6 +1,6 @@
 /* uint64_t-like operations that work even on hosts lacking uint64_t
 
-   Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/uchar.in.h b/lib/uchar.in.h
index 15fd7bc1eb..115ae1e84b 100644
--- a/lib/uchar.in.h
+++ b/lib/uchar.in.h
@@ -1,5 +1,5 @@
 /* <uchar.h> substitute - 16-bit and 32-bit wide character types.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/uinttostr.c b/lib/uinttostr.c
index bf26974b11..682eba5989 100644
--- a/lib/uinttostr.c
+++ b/lib/uinttostr.c
@@ -1,6 +1,6 @@
 /* Convert 'unsigned int' integer to printable string.
 
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/umaxtostr.c b/lib/umaxtostr.c
index 69cdde9d27..cd81e462ac 100644
--- a/lib/umaxtostr.c
+++ b/lib/umaxtostr.c
@@ -1,6 +1,6 @@
 /* Convert 'uintmax_t' integer to printable string.
 
-   Copyright (C) 2004-2022 Free Software Foundation, Inc.
+   Copyright (C) 2004-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/uname.c b/lib/uname.c
index d6e8e668d3..c522cab052 100644
--- a/lib/uname.c
+++ b/lib/uname.c
@@ -1,5 +1,5 @@
 /* uname replacement.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/unicase.in.h b/lib/unicase.in.h
index 9bcc79edd8..cf2bc9bd62 100644
--- a/lib/unicase.in.h
+++ b/lib/unicase.in.h
@@ -1,5 +1,5 @@
 /* Unicode character case mappings.
-   Copyright (C) 2002, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software.
    It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
diff --git a/lib/unicase/cased.c b/lib/unicase/cased.c
index 05e51982e1..bea791a1d3 100644
--- a/lib/unicase/cased.c
+++ b/lib/unicase/cased.c
@@ -1,5 +1,5 @@
 /* Test whether a Unicode character is cased.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/casefold.h b/lib/unicase/casefold.h
index fb612534ca..f1cff6ce69 100644
--- a/lib/unicase/casefold.h
+++ b/lib/unicase/casefold.h
@@ -1,5 +1,5 @@
 /* Casefolding of Unicode characters.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/caseprop.h b/lib/unicase/caseprop.h
index e599a3f1ce..179d1e87b5 100644
--- a/lib/unicase/caseprop.h
+++ b/lib/unicase/caseprop.h
@@ -1,5 +1,5 @@
 /* Case related properties of Unicode characters.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/context.h b/lib/unicase/context.h
index 8040a069cc..4396c76088 100644
--- a/lib/unicase/context.h
+++ b/lib/unicase/context.h
@@ -1,5 +1,5 @@
 /* Case-mapping contexts of UTF-8/UTF-16/UTF-32 substring.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/empty-prefix-context.c 
b/lib/unicase/empty-prefix-context.c
index 233f20c3ea..f217c77e61 100644
--- a/lib/unicase/empty-prefix-context.c
+++ b/lib/unicase/empty-prefix-context.c
@@ -1,5 +1,5 @@
 /* Case-mapping context of empty prefix string.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/empty-suffix-context.c 
b/lib/unicase/empty-suffix-context.c
index 39ce29e67b..d4d73421c5 100644
--- a/lib/unicase/empty-suffix-context.c
+++ b/lib/unicase/empty-suffix-context.c
@@ -1,5 +1,5 @@
 /* Case-mapping context of empty suffix string.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/ignorable.c b/lib/unicase/ignorable.c
index 1ebf801307..a000db5d52 100644
--- a/lib/unicase/ignorable.c
+++ b/lib/unicase/ignorable.c
@@ -1,5 +1,5 @@
 /* Test whether a Unicode character is case-ignorable.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/invariant.h b/lib/unicase/invariant.h
index c8b9319bba..c0647ead3b 100644
--- a/lib/unicase/invariant.h
+++ b/lib/unicase/invariant.h
@@ -1,5 +1,5 @@
 /* Internal functions for Unicode character case mappings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/locale-language.c b/lib/unicase/locale-language.c
index 5f02dabd96..b56b7f75c0 100644
--- a/lib/unicase/locale-language.c
+++ b/lib/unicase/locale-language.c
@@ -1,5 +1,5 @@
 /* Language code of current locale.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/locale-languages.gperf 
b/lib/unicase/locale-languages.gperf
index ea09e36a21..3469c4da89 100644
--- a/lib/unicase/locale-languages.gperf
+++ b/lib/unicase/locale-languages.gperf
@@ -1,5 +1,5 @@
 /* Language codes of locales.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This file is free software.
    It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
diff --git a/lib/unicase/simple-mapping.h b/lib/unicase/simple-mapping.h
index d3a801308c..6a36089d7b 100644
--- a/lib/unicase/simple-mapping.h
+++ b/lib/unicase/simple-mapping.h
@@ -1,5 +1,5 @@
 /* Simple case mapping for Unicode characters.
-   Copyright (C) 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/special-casing.c b/lib/unicase/special-casing.c
index 37156f6dcc..d26c7c1ab7 100644
--- a/lib/unicase/special-casing.c
+++ b/lib/unicase/special-casing.c
@@ -1,5 +1,5 @@
 /* Special casing table.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/special-casing.in.h b/lib/unicase/special-casing.in.h
index 2a011df364..d1feddb102 100644
--- a/lib/unicase/special-casing.in.h
+++ b/lib/unicase/special-casing.in.h
@@ -1,5 +1,5 @@
 /* Special casing table.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/tocasefold.c b/lib/unicase/tocasefold.c
index c73252ccb6..8f1be8ccea 100644
--- a/lib/unicase/tocasefold.c
+++ b/lib/unicase/tocasefold.c
@@ -1,5 +1,5 @@
 /* Casefold mapping for Unicode characters (locale and context independent).
-   Copyright (C) 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/tolower.c b/lib/unicase/tolower.c
index b3e117203a..f92519a3ac 100644
--- a/lib/unicase/tolower.c
+++ b/lib/unicase/tolower.c
@@ -1,5 +1,5 @@
 /* Lowercase mapping for Unicode characters (locale and context independent).
-   Copyright (C) 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/totitle.c b/lib/unicase/totitle.c
index 49bf28f42a..2ba5bc63fd 100644
--- a/lib/unicase/totitle.c
+++ b/lib/unicase/totitle.c
@@ -1,5 +1,5 @@
 /* Titlecase mapping for Unicode characters (locale and context independent).
-   Copyright (C) 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/toupper.c b/lib/unicase/toupper.c
index 6ad2d77a42..7d055df8f2 100644
--- a/lib/unicase/toupper.c
+++ b/lib/unicase/toupper.c
@@ -1,5 +1,5 @@
 /* Uppercase mapping for Unicode characters (locale and context independent).
-   Copyright (C) 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u-casecmp.h b/lib/unicase/u-casecmp.h
index cbc55d6a2c..7a04701e48 100644
--- a/lib/unicase/u-casecmp.h
+++ b/lib/unicase/u-casecmp.h
@@ -1,5 +1,5 @@
 /* Case and normalization insensitive comparison of Unicode strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u-casecoll.h b/lib/unicase/u-casecoll.h
index 46a13b3c28..2c54f09eee 100644
--- a/lib/unicase/u-casecoll.h
+++ b/lib/unicase/u-casecoll.h
@@ -1,6 +1,6 @@
 /* Locale dependent, case and normalization insensitive comparison of Unicode
    strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u-casefold.h b/lib/unicase/u-casefold.h
index 8123a02aea..ba4ddd5d82 100644
--- a/lib/unicase/u-casefold.h
+++ b/lib/unicase/u-casefold.h
@@ -1,5 +1,5 @@
 /* Casefolding mapping for Unicode strings (locale dependent).
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u-casemap.h b/lib/unicase/u-casemap.h
index 973866a8a4..45ac3817d6 100644
--- a/lib/unicase/u-casemap.h
+++ b/lib/unicase/u-casemap.h
@@ -1,5 +1,5 @@
 /* Case mapping for UTF-8/UTF-16/UTF-32 strings (locale dependent).
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u-casexfrm.h b/lib/unicase/u-casexfrm.h
index 5d905b4488..c897960c89 100644
--- a/lib/unicase/u-casexfrm.h
+++ b/lib/unicase/u-casexfrm.h
@@ -1,6 +1,6 @@
 /* Locale dependent transformation for case insensitive comparison of Unicode
    strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u-ct-casefold.h b/lib/unicase/u-ct-casefold.h
index 5eba00e590..ef2d3adc83 100644
--- a/lib/unicase/u-ct-casefold.h
+++ b/lib/unicase/u-ct-casefold.h
@@ -1,5 +1,5 @@
 /* Casefolding mapping for Unicode substrings (locale dependent).
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u-ct-totitle.h b/lib/unicase/u-ct-totitle.h
index 36742b1d2b..f077109dbc 100644
--- a/lib/unicase/u-ct-totitle.h
+++ b/lib/unicase/u-ct-totitle.h
@@ -1,5 +1,5 @@
 /* Titlecase mapping for UTF-8/UTF-16/UTF-32 substrings (locale dependent).
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u-is-cased.h b/lib/unicase/u-is-cased.h
index 0448685ac6..0758ad71ac 100644
--- a/lib/unicase/u-is-cased.h
+++ b/lib/unicase/u-is-cased.h
@@ -1,5 +1,5 @@
 /* Test whether case matters for a Unicode string.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u-is-invariant.h b/lib/unicase/u-is-invariant.h
index 3f378710e7..79c875cb55 100644
--- a/lib/unicase/u-is-invariant.h
+++ b/lib/unicase/u-is-invariant.h
@@ -1,5 +1,5 @@
 /* Test whether a Unicode string is invariant under a given case mapping.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u-prefix-context.h b/lib/unicase/u-prefix-context.h
index 7ec634e5a2..471fdd9e08 100644
--- a/lib/unicase/u-prefix-context.h
+++ b/lib/unicase/u-prefix-context.h
@@ -1,5 +1,5 @@
 /* Case-mapping context of prefix UTF-8/UTF-16/UTF-32 string.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u-suffix-context.h b/lib/unicase/u-suffix-context.h
index f218e1ad2e..2695a1ada5 100644
--- a/lib/unicase/u-suffix-context.h
+++ b/lib/unicase/u-suffix-context.h
@@ -1,5 +1,5 @@
 /* Case-mapping context of suffix UTF-8/UTF-16/UTF-32 string.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u-totitle.h b/lib/unicase/u-totitle.h
index 78bc76959a..3de6a1bba8 100644
--- a/lib/unicase/u-totitle.h
+++ b/lib/unicase/u-totitle.h
@@ -1,5 +1,5 @@
 /* Titlecase mapping for UTF-8/UTF-16/UTF-32 strings (locale dependent).
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u16-casecmp.c b/lib/unicase/u16-casecmp.c
index b914c29e6e..b7079fab6b 100644
--- a/lib/unicase/u16-casecmp.c
+++ b/lib/unicase/u16-casecmp.c
@@ -1,5 +1,5 @@
 /* Case and normalization insensitive comparison of UTF-16 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u16-casecoll.c b/lib/unicase/u16-casecoll.c
index f46426ee2d..69a1ab3226 100644
--- a/lib/unicase/u16-casecoll.c
+++ b/lib/unicase/u16-casecoll.c
@@ -1,6 +1,6 @@
 /* Locale dependent, case and normalization insensitive comparison of UTF-16
    strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u16-casefold.c b/lib/unicase/u16-casefold.c
index 62c934a031..7cb2c828a9 100644
--- a/lib/unicase/u16-casefold.c
+++ b/lib/unicase/u16-casefold.c
@@ -1,5 +1,5 @@
 /* Casefolding mapping for UTF-16 strings (locale dependent).
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u16-casemap.c b/lib/unicase/u16-casemap.c
index ecbaa82c28..8cc792d592 100644
--- a/lib/unicase/u16-casemap.c
+++ b/lib/unicase/u16-casemap.c
@@ -1,5 +1,5 @@
 /* Case mapping for UTF-16 strings (locale dependent).
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u16-casexfrm.c b/lib/unicase/u16-casexfrm.c
index cd9a470d1d..440a7142dc 100644
--- a/lib/unicase/u16-casexfrm.c
+++ b/lib/unicase/u16-casexfrm.c
@@ -1,6 +1,6 @@
 /* Locale dependent transformation for case insensitive comparison of UTF-16
    strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u16-ct-casefold.c b/lib/unicase/u16-ct-casefold.c
index 9b66d8f2a0..2c518d39e1 100644
--- a/lib/unicase/u16-ct-casefold.c
+++ b/lib/unicase/u16-ct-casefold.c
@@ -1,5 +1,5 @@
 /* Casefolding mapping for UTF-16 substrings (locale dependent).
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u16-ct-tolower.c b/lib/unicase/u16-ct-tolower.c
index 5d62502f5a..23a78212fe 100644
--- a/lib/unicase/u16-ct-tolower.c
+++ b/lib/unicase/u16-ct-tolower.c
@@ -1,5 +1,5 @@
 /* Lowercase mapping for UTF-16 substrings (locale dependent).
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u16-ct-totitle.c b/lib/unicase/u16-ct-totitle.c
index ce52c70469..5e447e7fa5 100644
--- a/lib/unicase/u16-ct-totitle.c
+++ b/lib/unicase/u16-ct-totitle.c
@@ -1,5 +1,5 @@
 /* Titlecase mapping for UTF-16 substrings (locale dependent).
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u16-ct-toupper.c b/lib/unicase/u16-ct-toupper.c
index 260c9793c2..6d3632aa5e 100644
--- a/lib/unicase/u16-ct-toupper.c
+++ b/lib/unicase/u16-ct-toupper.c
@@ -1,5 +1,5 @@
 /* Uppercase mapping for UTF-16 substrings (locale dependent).
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u16-is-cased.c b/lib/unicase/u16-is-cased.c
index 7ba2efadaf..8227578ed5 100644
--- a/lib/unicase/u16-is-cased.c
+++ b/lib/unicase/u16-is-cased.c
@@ -1,5 +1,5 @@
 /* Test whether case matters for an UTF-16 string.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u16-is-casefolded.c b/lib/unicase/u16-is-casefolded.c
index 84cf6a57cc..80d2a791e6 100644
--- a/lib/unicase/u16-is-casefolded.c
+++ b/lib/unicase/u16-is-casefolded.c
@@ -1,5 +1,5 @@
 /* Test whether an UTF-16 string is already case-folded.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u16-is-invariant.c b/lib/unicase/u16-is-invariant.c
index a465657672..96afade565 100644
--- a/lib/unicase/u16-is-invariant.c
+++ b/lib/unicase/u16-is-invariant.c
@@ -1,5 +1,5 @@
 /* Test whether an UTF-16 string is invariant under a given case mapping.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u16-is-lowercase.c b/lib/unicase/u16-is-lowercase.c
index 46cb276993..061d81ee06 100644
--- a/lib/unicase/u16-is-lowercase.c
+++ b/lib/unicase/u16-is-lowercase.c
@@ -1,5 +1,5 @@
 /* Test whether an UTF-16 string is entirely lower case.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u16-is-titlecase.c b/lib/unicase/u16-is-titlecase.c
index 31188aaac2..5338f436d1 100644
--- a/lib/unicase/u16-is-titlecase.c
+++ b/lib/unicase/u16-is-titlecase.c
@@ -1,5 +1,5 @@
 /* Test whether an UTF-16 string is entirely title case.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u16-is-uppercase.c b/lib/unicase/u16-is-uppercase.c
index c5ffe13854..11c70fcbd5 100644
--- a/lib/unicase/u16-is-uppercase.c
+++ b/lib/unicase/u16-is-uppercase.c
@@ -1,5 +1,5 @@
 /* Test whether an UTF-16 string is entirely upper case.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u16-prefix-context.c b/lib/unicase/u16-prefix-context.c
index 1297f5e984..412b9ece4e 100644
--- a/lib/unicase/u16-prefix-context.c
+++ b/lib/unicase/u16-prefix-context.c
@@ -1,5 +1,5 @@
 /* Case-mapping context of prefix UTF-16 string.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u16-suffix-context.c b/lib/unicase/u16-suffix-context.c
index 3b30bc7de2..41047540db 100644
--- a/lib/unicase/u16-suffix-context.c
+++ b/lib/unicase/u16-suffix-context.c
@@ -1,5 +1,5 @@
 /* Case-mapping context of suffix UTF-16 string.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u16-tolower.c b/lib/unicase/u16-tolower.c
index 9e10c1fee0..8c864d8133 100644
--- a/lib/unicase/u16-tolower.c
+++ b/lib/unicase/u16-tolower.c
@@ -1,5 +1,5 @@
 /* Lowercase mapping for UTF-16 strings (locale dependent).
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u16-totitle.c b/lib/unicase/u16-totitle.c
index 29b2cc9703..2e326731c2 100644
--- a/lib/unicase/u16-totitle.c
+++ b/lib/unicase/u16-totitle.c
@@ -1,5 +1,5 @@
 /* Titlecase mapping for UTF-16 strings (locale dependent).
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u16-toupper.c b/lib/unicase/u16-toupper.c
index 2023ffbc17..3e92ef45e3 100644
--- a/lib/unicase/u16-toupper.c
+++ b/lib/unicase/u16-toupper.c
@@ -1,5 +1,5 @@
 /* Uppercase mapping for UTF-16 strings (locale dependent).
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u32-casecmp.c b/lib/unicase/u32-casecmp.c
index fc29b1e73e..ee6b1e8896 100644
--- a/lib/unicase/u32-casecmp.c
+++ b/lib/unicase/u32-casecmp.c
@@ -1,5 +1,5 @@
 /* Case and normalization insensitive comparison of UTF-32 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u32-casecoll.c b/lib/unicase/u32-casecoll.c
index 7a28a6b981..9211124de3 100644
--- a/lib/unicase/u32-casecoll.c
+++ b/lib/unicase/u32-casecoll.c
@@ -1,6 +1,6 @@
 /* Locale dependent, case and normalization insensitive comparison of UTF-32
    strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u32-casefold.c b/lib/unicase/u32-casefold.c
index b17f27cbf8..d646397d58 100644
--- a/lib/unicase/u32-casefold.c
+++ b/lib/unicase/u32-casefold.c
@@ -1,5 +1,5 @@
 /* Casefolding mapping for UTF-32 strings (locale dependent).
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u32-casemap.c b/lib/unicase/u32-casemap.c
index 280bac9ba1..b8eb1bb0cb 100644
--- a/lib/unicase/u32-casemap.c
+++ b/lib/unicase/u32-casemap.c
@@ -1,5 +1,5 @@
 /* Case mapping for UTF-32 strings (locale dependent).
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u32-casexfrm.c b/lib/unicase/u32-casexfrm.c
index 04596b7cae..52968d705b 100644
--- a/lib/unicase/u32-casexfrm.c
+++ b/lib/unicase/u32-casexfrm.c
@@ -1,6 +1,6 @@
 /* Locale dependent transformation for case insensitive comparison of UTF-32
    strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u32-ct-casefold.c b/lib/unicase/u32-ct-casefold.c
index 0e7c4443ec..96c5997083 100644
--- a/lib/unicase/u32-ct-casefold.c
+++ b/lib/unicase/u32-ct-casefold.c
@@ -1,5 +1,5 @@
 /* Casefolding mapping for UTF-32 substrings (locale dependent).
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u32-ct-tolower.c b/lib/unicase/u32-ct-tolower.c
index 2d13798395..f75326bfe3 100644
--- a/lib/unicase/u32-ct-tolower.c
+++ b/lib/unicase/u32-ct-tolower.c
@@ -1,5 +1,5 @@
 /* Lowercase mapping for UTF-32 substrings (locale dependent).
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u32-ct-totitle.c b/lib/unicase/u32-ct-totitle.c
index 9786d35238..11ba02998e 100644
--- a/lib/unicase/u32-ct-totitle.c
+++ b/lib/unicase/u32-ct-totitle.c
@@ -1,5 +1,5 @@
 /* Titlecase mapping for UTF-32 substrings (locale dependent).
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u32-ct-toupper.c b/lib/unicase/u32-ct-toupper.c
index e753bba8dd..8a58122923 100644
--- a/lib/unicase/u32-ct-toupper.c
+++ b/lib/unicase/u32-ct-toupper.c
@@ -1,5 +1,5 @@
 /* Uppercase mapping for UTF-32 substrings (locale dependent).
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u32-is-cased.c b/lib/unicase/u32-is-cased.c
index b10cc04b71..e40cb6c3a7 100644
--- a/lib/unicase/u32-is-cased.c
+++ b/lib/unicase/u32-is-cased.c
@@ -1,5 +1,5 @@
 /* Test whether case matters for an UTF-32 string.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u32-is-casefolded.c b/lib/unicase/u32-is-casefolded.c
index 9f22ed5f08..1689f1d05f 100644
--- a/lib/unicase/u32-is-casefolded.c
+++ b/lib/unicase/u32-is-casefolded.c
@@ -1,5 +1,5 @@
 /* Test whether an UTF-32 string is already case-folded.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u32-is-invariant.c b/lib/unicase/u32-is-invariant.c
index f46b2d0e01..fe04c0f56b 100644
--- a/lib/unicase/u32-is-invariant.c
+++ b/lib/unicase/u32-is-invariant.c
@@ -1,5 +1,5 @@
 /* Test whether an UTF-32 string is invariant under a given case mapping.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u32-is-lowercase.c b/lib/unicase/u32-is-lowercase.c
index e0fc137f5e..53183841b7 100644
--- a/lib/unicase/u32-is-lowercase.c
+++ b/lib/unicase/u32-is-lowercase.c
@@ -1,5 +1,5 @@
 /* Test whether an UTF-32 string is entirely lower case.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u32-is-titlecase.c b/lib/unicase/u32-is-titlecase.c
index 08f8be8b9d..b974b040f9 100644
--- a/lib/unicase/u32-is-titlecase.c
+++ b/lib/unicase/u32-is-titlecase.c
@@ -1,5 +1,5 @@
 /* Test whether an UTF-32 string is entirely title case.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u32-is-uppercase.c b/lib/unicase/u32-is-uppercase.c
index 05d180b8bf..3f1831737b 100644
--- a/lib/unicase/u32-is-uppercase.c
+++ b/lib/unicase/u32-is-uppercase.c
@@ -1,5 +1,5 @@
 /* Test whether an UTF-32 string is entirely upper case.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u32-prefix-context.c b/lib/unicase/u32-prefix-context.c
index a636e0a149..010d229e78 100644
--- a/lib/unicase/u32-prefix-context.c
+++ b/lib/unicase/u32-prefix-context.c
@@ -1,5 +1,5 @@
 /* Case-mapping context of prefix UTF-32 string.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u32-suffix-context.c b/lib/unicase/u32-suffix-context.c
index 73095e922f..8fabf43190 100644
--- a/lib/unicase/u32-suffix-context.c
+++ b/lib/unicase/u32-suffix-context.c
@@ -1,5 +1,5 @@
 /* Case-mapping context of suffix UTF-32 string.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u32-tolower.c b/lib/unicase/u32-tolower.c
index 1f557bf68b..a6687b2942 100644
--- a/lib/unicase/u32-tolower.c
+++ b/lib/unicase/u32-tolower.c
@@ -1,5 +1,5 @@
 /* Lowercase mapping for UTF-32 strings (locale dependent).
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u32-totitle.c b/lib/unicase/u32-totitle.c
index 29ebb51220..0862875843 100644
--- a/lib/unicase/u32-totitle.c
+++ b/lib/unicase/u32-totitle.c
@@ -1,5 +1,5 @@
 /* Titlecase mapping for UTF-32 strings (locale dependent).
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u32-toupper.c b/lib/unicase/u32-toupper.c
index fcb70dcbf7..5c64927ea9 100644
--- a/lib/unicase/u32-toupper.c
+++ b/lib/unicase/u32-toupper.c
@@ -1,5 +1,5 @@
 /* Uppercase mapping for UTF-32 strings (locale dependent).
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u8-casecmp.c b/lib/unicase/u8-casecmp.c
index ee7b590ce0..3daf4b1947 100644
--- a/lib/unicase/u8-casecmp.c
+++ b/lib/unicase/u8-casecmp.c
@@ -1,5 +1,5 @@
 /* Case and normalization insensitive comparison of UTF-8 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u8-casecoll.c b/lib/unicase/u8-casecoll.c
index e7ae83b0dd..10c8fdf7ec 100644
--- a/lib/unicase/u8-casecoll.c
+++ b/lib/unicase/u8-casecoll.c
@@ -1,6 +1,6 @@
 /* Locale dependent, case and normalization insensitive comparison of UTF-8
    strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u8-casefold.c b/lib/unicase/u8-casefold.c
index b81bba4d1b..c97c063036 100644
--- a/lib/unicase/u8-casefold.c
+++ b/lib/unicase/u8-casefold.c
@@ -1,5 +1,5 @@
 /* Casefolding mapping for UTF-8 strings (locale dependent).
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u8-casemap.c b/lib/unicase/u8-casemap.c
index 1dbac0bfff..920305cf05 100644
--- a/lib/unicase/u8-casemap.c
+++ b/lib/unicase/u8-casemap.c
@@ -1,5 +1,5 @@
 /* Case mapping for UTF-8 strings (locale dependent).
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u8-casexfrm.c b/lib/unicase/u8-casexfrm.c
index 67f6f4ad36..e6e0fa209b 100644
--- a/lib/unicase/u8-casexfrm.c
+++ b/lib/unicase/u8-casexfrm.c
@@ -1,6 +1,6 @@
 /* Locale dependent transformation for case insensitive comparison of UTF-8
    strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u8-ct-casefold.c b/lib/unicase/u8-ct-casefold.c
index f0491c27fe..7459502bda 100644
--- a/lib/unicase/u8-ct-casefold.c
+++ b/lib/unicase/u8-ct-casefold.c
@@ -1,5 +1,5 @@
 /* Casefolding mapping for UTF-8 substrings (locale dependent).
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u8-ct-tolower.c b/lib/unicase/u8-ct-tolower.c
index 4e28c29e3a..d64e77bce4 100644
--- a/lib/unicase/u8-ct-tolower.c
+++ b/lib/unicase/u8-ct-tolower.c
@@ -1,5 +1,5 @@
 /* Lowercase mapping for UTF-8 substrings (locale dependent).
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u8-ct-totitle.c b/lib/unicase/u8-ct-totitle.c
index 787d5ab8b4..d3b1e8445a 100644
--- a/lib/unicase/u8-ct-totitle.c
+++ b/lib/unicase/u8-ct-totitle.c
@@ -1,5 +1,5 @@
 /* Titlecase mapping for UTF-8 substrings (locale dependent).
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u8-ct-toupper.c b/lib/unicase/u8-ct-toupper.c
index 6f39cee9a6..bf6c13f2de 100644
--- a/lib/unicase/u8-ct-toupper.c
+++ b/lib/unicase/u8-ct-toupper.c
@@ -1,5 +1,5 @@
 /* Uppercase mapping for UTF-8 substrings (locale dependent).
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u8-is-cased.c b/lib/unicase/u8-is-cased.c
index 5e56aafb3b..fc111c45f7 100644
--- a/lib/unicase/u8-is-cased.c
+++ b/lib/unicase/u8-is-cased.c
@@ -1,5 +1,5 @@
 /* Test whether case matters for an UTF-8 string.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u8-is-casefolded.c b/lib/unicase/u8-is-casefolded.c
index 75dfa7b3c8..47286950ec 100644
--- a/lib/unicase/u8-is-casefolded.c
+++ b/lib/unicase/u8-is-casefolded.c
@@ -1,5 +1,5 @@
 /* Test whether an UTF-8 string is already case-folded.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u8-is-invariant.c b/lib/unicase/u8-is-invariant.c
index 57c72a5973..3d34c4f9f6 100644
--- a/lib/unicase/u8-is-invariant.c
+++ b/lib/unicase/u8-is-invariant.c
@@ -1,5 +1,5 @@
 /* Test whether an UTF-8 string is invariant under a given case mapping.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u8-is-lowercase.c b/lib/unicase/u8-is-lowercase.c
index 3ddb074ba3..70227b15de 100644
--- a/lib/unicase/u8-is-lowercase.c
+++ b/lib/unicase/u8-is-lowercase.c
@@ -1,5 +1,5 @@
 /* Test whether an UTF-8 string is entirely lower case.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u8-is-titlecase.c b/lib/unicase/u8-is-titlecase.c
index 946c390e50..403cdc042d 100644
--- a/lib/unicase/u8-is-titlecase.c
+++ b/lib/unicase/u8-is-titlecase.c
@@ -1,5 +1,5 @@
 /* Test whether an UTF-8 string is entirely title case.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u8-is-uppercase.c b/lib/unicase/u8-is-uppercase.c
index 25adbb197a..e8a4672acd 100644
--- a/lib/unicase/u8-is-uppercase.c
+++ b/lib/unicase/u8-is-uppercase.c
@@ -1,5 +1,5 @@
 /* Test whether an UTF-8 string is entirely upper case.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u8-prefix-context.c b/lib/unicase/u8-prefix-context.c
index 2e479b1e28..e4cb55c503 100644
--- a/lib/unicase/u8-prefix-context.c
+++ b/lib/unicase/u8-prefix-context.c
@@ -1,5 +1,5 @@
 /* Case-mapping context of prefix UTF-8 string.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u8-suffix-context.c b/lib/unicase/u8-suffix-context.c
index b897e5e702..eddc3ab44f 100644
--- a/lib/unicase/u8-suffix-context.c
+++ b/lib/unicase/u8-suffix-context.c
@@ -1,5 +1,5 @@
 /* Case-mapping context of suffix UTF-8 string.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u8-tolower.c b/lib/unicase/u8-tolower.c
index 63459fcf73..5780f5900b 100644
--- a/lib/unicase/u8-tolower.c
+++ b/lib/unicase/u8-tolower.c
@@ -1,5 +1,5 @@
 /* Lowercase mapping for UTF-8 strings (locale dependent).
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u8-totitle.c b/lib/unicase/u8-totitle.c
index 856d515991..ff1d846b7a 100644
--- a/lib/unicase/u8-totitle.c
+++ b/lib/unicase/u8-totitle.c
@@ -1,5 +1,5 @@
 /* Titlecase mapping for UTF-8 strings (locale dependent).
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/u8-toupper.c b/lib/unicase/u8-toupper.c
index 1d7e22c372..292d27f229 100644
--- a/lib/unicase/u8-toupper.c
+++ b/lib/unicase/u8-toupper.c
@@ -1,5 +1,5 @@
 /* Uppercase mapping for UTF-8 strings (locale dependent).
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/ulc-casecmp.c b/lib/unicase/ulc-casecmp.c
index fda5558e7e..2d53f6d25b 100644
--- a/lib/unicase/ulc-casecmp.c
+++ b/lib/unicase/ulc-casecmp.c
@@ -1,5 +1,5 @@
 /* Case and normalization insensitive comparison of strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/ulc-casecoll.c b/lib/unicase/ulc-casecoll.c
index 0ef8bf5a79..5081bc6447 100644
--- a/lib/unicase/ulc-casecoll.c
+++ b/lib/unicase/ulc-casecoll.c
@@ -1,5 +1,5 @@
 /* Locale dependent, case and normalization insensitive comparison of strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/ulc-casexfrm.c b/lib/unicase/ulc-casexfrm.c
index e83dae57d4..50e5628f5a 100644
--- a/lib/unicase/ulc-casexfrm.c
+++ b/lib/unicase/ulc-casexfrm.c
@@ -1,5 +1,5 @@
 /* Locale dependent transformation for case insensitive comparison of strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicase/unicasemap.h b/lib/unicase/unicasemap.h
index a03088e1ea..736a12de9a 100644
--- a/lib/unicase/unicasemap.h
+++ b/lib/unicase/unicasemap.h
@@ -1,5 +1,5 @@
 /* Case mapping for UTF-8/UTF-16/UTF-32 strings (locale dependent).
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unicodeio.c b/lib/unicodeio.c
index ccfe94ec81..3a85ea5f68 100644
--- a/lib/unicodeio.c
+++ b/lib/unicodeio.c
@@ -1,6 +1,6 @@
 /* Unicode character output to streams with locale dependent encoding.
 
-   Copyright (C) 2000-2003, 2006, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2000-2003, 2006, 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/unicodeio.h b/lib/unicodeio.h
index fd46f580f5..80335d57fd 100644
--- a/lib/unicodeio.h
+++ b/lib/unicodeio.h
@@ -1,6 +1,6 @@
 /* Unicode character output to streams with locale dependent encoding.
 
-   Copyright (C) 2000-2003, 2005, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2000-2003, 2005, 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/uniconv.in.h b/lib/uniconv.in.h
index 940a9e8ec8..d3efab2048 100644
--- a/lib/uniconv.in.h
+++ b/lib/uniconv.in.h
@@ -1,5 +1,5 @@
 /* Conversions between Unicode and legacy encodings.
-   Copyright (C) 2002, 2005, 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2005, 2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/uniconv/u-conv-from-enc.h b/lib/uniconv/u-conv-from-enc.h
index ba9abbb391..e411b798cd 100644
--- a/lib/uniconv/u-conv-from-enc.h
+++ b/lib/uniconv/u-conv-from-enc.h
@@ -1,5 +1,5 @@
 /* Conversion to UTF-16/UTF-32 from legacy encodings.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software.
    It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
diff --git a/lib/uniconv/u-conv-to-enc.h b/lib/uniconv/u-conv-to-enc.h
index 437d688723..e4ad2522dd 100644
--- a/lib/uniconv/u-conv-to-enc.h
+++ b/lib/uniconv/u-conv-to-enc.h
@@ -1,5 +1,5 @@
 /* Conversion from UTF-16/UTF-32 to legacy encodings.
-   Copyright (C) 2002, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2023 Free Software Foundation, Inc.
 
    This file is free software.
    It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
diff --git a/lib/uniconv/u-strconv-from-enc.h b/lib/uniconv/u-strconv-from-enc.h
index 675409467f..6f45284e0e 100644
--- a/lib/uniconv/u-strconv-from-enc.h
+++ b/lib/uniconv/u-strconv-from-enc.h
@@ -1,5 +1,5 @@
 /* Conversion to UTF-8/UTF-16/UTF-32 from legacy encodings.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/uniconv/u-strconv-to-enc.h b/lib/uniconv/u-strconv-to-enc.h
index 36a51adcc1..28f223a514 100644
--- a/lib/uniconv/u-strconv-to-enc.h
+++ b/lib/uniconv/u-strconv-to-enc.h
@@ -1,5 +1,5 @@
 /* Conversion from UTF-16/UTF-32 to legacy encodings.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software.
    It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
diff --git a/lib/uniconv/u16-conv-from-enc.c b/lib/uniconv/u16-conv-from-enc.c
index ef60f3589f..fd51d80a64 100644
--- a/lib/uniconv/u16-conv-from-enc.c
+++ b/lib/uniconv/u16-conv-from-enc.c
@@ -1,5 +1,5 @@
 /* Conversion to UTF-16 from legacy encodings.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software.
    It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
diff --git a/lib/uniconv/u16-conv-to-enc.c b/lib/uniconv/u16-conv-to-enc.c
index faf8401442..a5330165d1 100644
--- a/lib/uniconv/u16-conv-to-enc.c
+++ b/lib/uniconv/u16-conv-to-enc.c
@@ -1,5 +1,5 @@
 /* Conversion from UTF-16 to legacy encodings.
-   Copyright (C) 2002, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2023 Free Software Foundation, Inc.
 
    This file is free software.
    It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
diff --git a/lib/uniconv/u16-strconv-from-enc.c 
b/lib/uniconv/u16-strconv-from-enc.c
index a417e228e7..9f6fbe7c93 100644
--- a/lib/uniconv/u16-strconv-from-enc.c
+++ b/lib/uniconv/u16-strconv-from-enc.c
@@ -1,5 +1,5 @@
 /* Conversion to UTF-16 from legacy encodings.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software.
    It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
diff --git a/lib/uniconv/u16-strconv-from-locale.c 
b/lib/uniconv/u16-strconv-from-locale.c
index 85dd17bd93..628a149af7 100644
--- a/lib/uniconv/u16-strconv-from-locale.c
+++ b/lib/uniconv/u16-strconv-from-locale.c
@@ -1,5 +1,5 @@
 /* Conversion to UTF-16 from the locale encoding.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software.
    It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
diff --git a/lib/uniconv/u16-strconv-to-enc.c b/lib/uniconv/u16-strconv-to-enc.c
index 5e0d67270f..fcc8155b1f 100644
--- a/lib/uniconv/u16-strconv-to-enc.c
+++ b/lib/uniconv/u16-strconv-to-enc.c
@@ -1,5 +1,5 @@
 /* Conversion from UTF-16 to legacy encodings.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software.
    It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
diff --git a/lib/uniconv/u16-strconv-to-locale.c 
b/lib/uniconv/u16-strconv-to-locale.c
index a9ea03927c..3158315f69 100644
--- a/lib/uniconv/u16-strconv-to-locale.c
+++ b/lib/uniconv/u16-strconv-to-locale.c
@@ -1,5 +1,5 @@
 /* Conversion from UTF-16 to the locale encoding.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software.
    It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
diff --git a/lib/uniconv/u32-conv-from-enc.c b/lib/uniconv/u32-conv-from-enc.c
index ba1a1252d2..ea8250d582 100644
--- a/lib/uniconv/u32-conv-from-enc.c
+++ b/lib/uniconv/u32-conv-from-enc.c
@@ -1,5 +1,5 @@
 /* Conversion to UTF-32 from legacy encodings.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software.
    It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
diff --git a/lib/uniconv/u32-conv-to-enc.c b/lib/uniconv/u32-conv-to-enc.c
index e12aae990d..fa030e45af 100644
--- a/lib/uniconv/u32-conv-to-enc.c
+++ b/lib/uniconv/u32-conv-to-enc.c
@@ -1,5 +1,5 @@
 /* Conversion from UTF-32 to legacy encodings.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software.
    It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
diff --git a/lib/uniconv/u32-strconv-from-enc.c 
b/lib/uniconv/u32-strconv-from-enc.c
index ebf4ede3f3..5e26d95876 100644
--- a/lib/uniconv/u32-strconv-from-enc.c
+++ b/lib/uniconv/u32-strconv-from-enc.c
@@ -1,5 +1,5 @@
 /* Conversion to UTF-32 from legacy encodings.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software.
    It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
diff --git a/lib/uniconv/u32-strconv-from-locale.c 
b/lib/uniconv/u32-strconv-from-locale.c
index 1290f81006..a1dd7ef8f8 100644
--- a/lib/uniconv/u32-strconv-from-locale.c
+++ b/lib/uniconv/u32-strconv-from-locale.c
@@ -1,5 +1,5 @@
 /* Conversion to UTF-32 from the locale encoding.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software.
    It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
diff --git a/lib/uniconv/u32-strconv-to-enc.c b/lib/uniconv/u32-strconv-to-enc.c
index fd89ee1e61..70339aed30 100644
--- a/lib/uniconv/u32-strconv-to-enc.c
+++ b/lib/uniconv/u32-strconv-to-enc.c
@@ -1,5 +1,5 @@
 /* Conversion from UTF-32 to legacy encodings.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software.
    It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
diff --git a/lib/uniconv/u32-strconv-to-locale.c 
b/lib/uniconv/u32-strconv-to-locale.c
index acc1a3b0ce..67f1eae642 100644
--- a/lib/uniconv/u32-strconv-to-locale.c
+++ b/lib/uniconv/u32-strconv-to-locale.c
@@ -1,5 +1,5 @@
 /* Conversion from UTF-32 to the locale encoding.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software.
    It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
diff --git a/lib/uniconv/u8-conv-from-enc.c b/lib/uniconv/u8-conv-from-enc.c
index b8f0fd3990..407d1c51d7 100644
--- a/lib/uniconv/u8-conv-from-enc.c
+++ b/lib/uniconv/u8-conv-from-enc.c
@@ -1,5 +1,5 @@
 /* Conversion to UTF-8 from legacy encodings.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/uniconv/u8-conv-to-enc.c b/lib/uniconv/u8-conv-to-enc.c
index 7c2e6e1105..5995def0c4 100644
--- a/lib/uniconv/u8-conv-to-enc.c
+++ b/lib/uniconv/u8-conv-to-enc.c
@@ -1,5 +1,5 @@
 /* Conversion from UTF-8 to legacy encodings.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software.
    It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
diff --git a/lib/uniconv/u8-strconv-from-enc.c 
b/lib/uniconv/u8-strconv-from-enc.c
index 83b6dd3a6a..e8dff2c576 100644
--- a/lib/uniconv/u8-strconv-from-enc.c
+++ b/lib/uniconv/u8-strconv-from-enc.c
@@ -1,5 +1,5 @@
 /* Conversion to UTF-8 from legacy encodings.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/uniconv/u8-strconv-from-locale.c 
b/lib/uniconv/u8-strconv-from-locale.c
index 485593e2bc..7f9a32534d 100644
--- a/lib/uniconv/u8-strconv-from-locale.c
+++ b/lib/uniconv/u8-strconv-from-locale.c
@@ -1,5 +1,5 @@
 /* Conversion to UTF-8 from the locale encoding.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/uniconv/u8-strconv-to-enc.c b/lib/uniconv/u8-strconv-to-enc.c
index aa6873fc2d..b181a8a78b 100644
--- a/lib/uniconv/u8-strconv-to-enc.c
+++ b/lib/uniconv/u8-strconv-to-enc.c
@@ -1,5 +1,5 @@
 /* Conversion from UTF-8 to legacy encodings.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software.
    It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
diff --git a/lib/uniconv/u8-strconv-to-locale.c 
b/lib/uniconv/u8-strconv-to-locale.c
index 7faa3ffd4e..4b679c1efa 100644
--- a/lib/uniconv/u8-strconv-to-locale.c
+++ b/lib/uniconv/u8-strconv-to-locale.c
@@ -1,5 +1,5 @@
 /* Conversion from UTF-8 to the locale encoding.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software.
    It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
diff --git a/lib/unictype.in.h b/lib/unictype.in.h
index 2f0efefca8..c2f21c18f5 100644
--- a/lib/unictype.in.h
+++ b/lib/unictype.in.h
@@ -1,5 +1,5 @@
 /* Unicode character classification and properties.
-   Copyright (C) 2002, 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2005-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/unictype/3level.h b/lib/unictype/3level.h
index a35e0049d5..6c07f576e8 100644
--- a/lib/unictype/3level.h
+++ b/lib/unictype/3level.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2000-2001, 2009-2022 Free Software Foundation, Inc.
+/* Copyright (C) 2000-2001, 2009-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Bruno Haible <haible@clisp.cons.org>, 2000.
 
diff --git a/lib/unictype/3levelbit.h b/lib/unictype/3levelbit.h
index 57bdd93d82..07e32a9f2e 100644
--- a/lib/unictype/3levelbit.h
+++ b/lib/unictype/3levelbit.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2000-2002, 2009-2022 Free Software Foundation, Inc.
+/* Copyright (C) 2000-2002, 2009-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Bruno Haible <haible@clisp.cons.org>, 2000.
 
diff --git a/lib/unictype/bidi_byname.c b/lib/unictype/bidi_byname.c
index 232d59c4fb..276feabc65 100644
--- a/lib/unictype/bidi_byname.c
+++ b/lib/unictype/bidi_byname.c
@@ -1,5 +1,5 @@
 /* Bidi classes of Unicode characters.
-   Copyright (C) 2002, 2006, 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/bidi_byname.gperf b/lib/unictype/bidi_byname.gperf
index 7ff7eb6e62..f169021397 100644
--- a/lib/unictype/bidi_byname.gperf
+++ b/lib/unictype/bidi_byname.gperf
@@ -1,5 +1,5 @@
 /* Bidi classes of Unicode characters.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software.
    It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
diff --git a/lib/unictype/bidi_longname.c b/lib/unictype/bidi_longname.c
index a4fd2358a1..2bf4cb4ac8 100644
--- a/lib/unictype/bidi_longname.c
+++ b/lib/unictype/bidi_longname.c
@@ -1,5 +1,5 @@
 /* Bidi classes of Unicode characters.
-   Copyright (C) 2002, 2006, 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software.
diff --git a/lib/unictype/bidi_name.c b/lib/unictype/bidi_name.c
index c289295c37..650786a57b 100644
--- a/lib/unictype/bidi_name.c
+++ b/lib/unictype/bidi_name.c
@@ -1,5 +1,5 @@
 /* Bidi classes of Unicode characters.
-   Copyright (C) 2002, 2006, 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/bidi_of.c b/lib/unictype/bidi_of.c
index eed2a3d86d..f115e187ca 100644
--- a/lib/unictype/bidi_of.c
+++ b/lib/unictype/bidi_of.c
@@ -1,5 +1,5 @@
 /* Bidi classes of Unicode characters.
-   Copyright (C) 2002, 2006, 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/unictype/bidi_test.c b/lib/unictype/bidi_test.c
index fab5ae2b70..8bd5608318 100644
--- a/lib/unictype/bidi_test.c
+++ b/lib/unictype/bidi_test.c
@@ -1,5 +1,5 @@
 /* Bidi classes of Unicode characters.
-   Copyright (C) 2002, 2006, 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/bitmap.h b/lib/unictype/bitmap.h
index 5bd46368a5..9da85c1126 100644
--- a/lib/unictype/bitmap.h
+++ b/lib/unictype/bitmap.h
@@ -1,5 +1,5 @@
 /* Three-level bitmap lookup.
-   Copyright (C) 2000-2002, 2005-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2000-2002, 2005-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2000-2002.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/unictype/block_test.c b/lib/unictype/block_test.c
index 569ff80e31..4ef1dfee4d 100644
--- a/lib/unictype/block_test.c
+++ b/lib/unictype/block_test.c
@@ -1,5 +1,5 @@
 /* Blocks of Unicode characters.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2007.
 
    This file is free software.
diff --git a/lib/unictype/blocks.c b/lib/unictype/blocks.c
index a025da0aad..3977a3ae87 100644
--- a/lib/unictype/blocks.c
+++ b/lib/unictype/blocks.c
@@ -1,5 +1,5 @@
 /* Blocks of Unicode characters.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2007.
 
    This file is free software.
diff --git a/lib/unictype/categ_C.c b/lib/unictype/categ_C.c
index 5333f45dda..ac43962d0f 100644
--- a/lib/unictype/categ_C.c
+++ b/lib/unictype/categ_C.c
@@ -1,5 +1,5 @@
 /* Categories of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/categ_Cc.c b/lib/unictype/categ_Cc.c
index a07bb294d0..393dc8b558 100644
--- a/lib/unictype/categ_Cc.c
+++ b/lib/unictype/categ_Cc.c
@@ -1,5 +1,5 @@
 /* Categories of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/categ_Cf.c b/lib/unictype/categ_Cf.c
index df2e59565d..8ec30611d2 100644
--- a/lib/unictype/categ_Cf.c
+++ b/lib/unictype/categ_Cf.c
@@ -1,5 +1,5 @@
 /* Categories of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/categ_Cn.c b/lib/unictype/categ_Cn.c
index 3f7cdb6406..2e2f5ab3b3 100644
--- a/lib/unictype/categ_Cn.c
+++ b/lib/unictype/categ_Cn.c
@@ -1,5 +1,5 @@
 /* Categories of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/categ_Co.c b/lib/unictype/categ_Co.c
index 375aec950d..5b035e305f 100644
--- a/lib/unictype/categ_Co.c
+++ b/lib/unictype/categ_Co.c
@@ -1,5 +1,5 @@
 /* Categories of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/categ_Cs.c b/lib/unictype/categ_Cs.c
index 7f23bc1560..dadf5b93e0 100644
--- a/lib/unictype/categ_Cs.c
+++ b/lib/unictype/categ_Cs.c
@@ -1,5 +1,5 @@
 /* Categories of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/categ_L.c b/lib/unictype/categ_L.c
index 906d9e6f28..5d06212004 100644
--- a/lib/unictype/categ_L.c
+++ b/lib/unictype/categ_L.c
@@ -1,5 +1,5 @@
 /* Categories of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/categ_LC.c b/lib/unictype/categ_LC.c
index 508e394162..c1e98b320e 100644
--- a/lib/unictype/categ_LC.c
+++ b/lib/unictype/categ_LC.c
@@ -1,5 +1,5 @@
 /* Categories of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software.
diff --git a/lib/unictype/categ_Ll.c b/lib/unictype/categ_Ll.c
index f42c33b470..9d9c73dd35 100644
--- a/lib/unictype/categ_Ll.c
+++ b/lib/unictype/categ_Ll.c
@@ -1,5 +1,5 @@
 /* Categories of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/categ_Lm.c b/lib/unictype/categ_Lm.c
index 0b777a2df9..4ffaf43442 100644
--- a/lib/unictype/categ_Lm.c
+++ b/lib/unictype/categ_Lm.c
@@ -1,5 +1,5 @@
 /* Categories of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/categ_Lo.c b/lib/unictype/categ_Lo.c
index ddaf4852ae..7cd361ee19 100644
--- a/lib/unictype/categ_Lo.c
+++ b/lib/unictype/categ_Lo.c
@@ -1,5 +1,5 @@
 /* Categories of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/categ_Lt.c b/lib/unictype/categ_Lt.c
index 5b843405bc..3190e73aba 100644
--- a/lib/unictype/categ_Lt.c
+++ b/lib/unictype/categ_Lt.c
@@ -1,5 +1,5 @@
 /* Categories of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/categ_Lu.c b/lib/unictype/categ_Lu.c
index 846c53ef35..de18d5fcc0 100644
--- a/lib/unictype/categ_Lu.c
+++ b/lib/unictype/categ_Lu.c
@@ -1,5 +1,5 @@
 /* Categories of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/categ_M.c b/lib/unictype/categ_M.c
index ec72439940..1bb27e526c 100644
--- a/lib/unictype/categ_M.c
+++ b/lib/unictype/categ_M.c
@@ -1,5 +1,5 @@
 /* Categories of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/unictype/categ_Mc.c b/lib/unictype/categ_Mc.c
index 6432b0257e..a4cb3f5780 100644
--- a/lib/unictype/categ_Mc.c
+++ b/lib/unictype/categ_Mc.c
@@ -1,5 +1,5 @@
 /* Categories of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/categ_Me.c b/lib/unictype/categ_Me.c
index 744a643219..78c47a59e2 100644
--- a/lib/unictype/categ_Me.c
+++ b/lib/unictype/categ_Me.c
@@ -1,5 +1,5 @@
 /* Categories of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/categ_Mn.c b/lib/unictype/categ_Mn.c
index 26ae688df4..f705611bb6 100644
--- a/lib/unictype/categ_Mn.c
+++ b/lib/unictype/categ_Mn.c
@@ -1,5 +1,5 @@
 /* Categories of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/categ_N.c b/lib/unictype/categ_N.c
index eef974bcd4..6eeca4f0c9 100644
--- a/lib/unictype/categ_N.c
+++ b/lib/unictype/categ_N.c
@@ -1,5 +1,5 @@
 /* Categories of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/categ_Nd.c b/lib/unictype/categ_Nd.c
index cf0cce9431..1bf231fa4f 100644
--- a/lib/unictype/categ_Nd.c
+++ b/lib/unictype/categ_Nd.c
@@ -1,5 +1,5 @@
 /* Categories of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/categ_Nl.c b/lib/unictype/categ_Nl.c
index 255ebc4a83..3391154251 100644
--- a/lib/unictype/categ_Nl.c
+++ b/lib/unictype/categ_Nl.c
@@ -1,5 +1,5 @@
 /* Categories of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/categ_No.c b/lib/unictype/categ_No.c
index e52ecc7fbf..223afa00d2 100644
--- a/lib/unictype/categ_No.c
+++ b/lib/unictype/categ_No.c
@@ -1,5 +1,5 @@
 /* Categories of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/categ_P.c b/lib/unictype/categ_P.c
index 910dc13b4d..c872892ff4 100644
--- a/lib/unictype/categ_P.c
+++ b/lib/unictype/categ_P.c
@@ -1,5 +1,5 @@
 /* Categories of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/categ_Pc.c b/lib/unictype/categ_Pc.c
index 696d87568b..4bc1cf7e2d 100644
--- a/lib/unictype/categ_Pc.c
+++ b/lib/unictype/categ_Pc.c
@@ -1,5 +1,5 @@
 /* Categories of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/categ_Pd.c b/lib/unictype/categ_Pd.c
index 6fbc9b099e..2f5edb50c1 100644
--- a/lib/unictype/categ_Pd.c
+++ b/lib/unictype/categ_Pd.c
@@ -1,5 +1,5 @@
 /* Categories of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/categ_Pe.c b/lib/unictype/categ_Pe.c
index 20cf1d25c8..e3a7668ecb 100644
--- a/lib/unictype/categ_Pe.c
+++ b/lib/unictype/categ_Pe.c
@@ -1,5 +1,5 @@
 /* Categories of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/categ_Pf.c b/lib/unictype/categ_Pf.c
index 96e1f16b40..133e1c745f 100644
--- a/lib/unictype/categ_Pf.c
+++ b/lib/unictype/categ_Pf.c
@@ -1,5 +1,5 @@
 /* Categories of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/categ_Pi.c b/lib/unictype/categ_Pi.c
index b0bf8d5978..2a57c6e8e4 100644
--- a/lib/unictype/categ_Pi.c
+++ b/lib/unictype/categ_Pi.c
@@ -1,5 +1,5 @@
 /* Categories of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/categ_Po.c b/lib/unictype/categ_Po.c
index fe86316308..550b2722bf 100644
--- a/lib/unictype/categ_Po.c
+++ b/lib/unictype/categ_Po.c
@@ -1,5 +1,5 @@
 /* Categories of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/categ_Ps.c b/lib/unictype/categ_Ps.c
index db89374bfa..8f83178316 100644
--- a/lib/unictype/categ_Ps.c
+++ b/lib/unictype/categ_Ps.c
@@ -1,5 +1,5 @@
 /* Categories of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/categ_S.c b/lib/unictype/categ_S.c
index 66afcaad61..8874043761 100644
--- a/lib/unictype/categ_S.c
+++ b/lib/unictype/categ_S.c
@@ -1,5 +1,5 @@
 /* Categories of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/categ_Sc.c b/lib/unictype/categ_Sc.c
index 5f6f7f32a1..8ce422cdcf 100644
--- a/lib/unictype/categ_Sc.c
+++ b/lib/unictype/categ_Sc.c
@@ -1,5 +1,5 @@
 /* Categories of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/categ_Sk.c b/lib/unictype/categ_Sk.c
index 988f1b4d8f..2450cf475a 100644
--- a/lib/unictype/categ_Sk.c
+++ b/lib/unictype/categ_Sk.c
@@ -1,5 +1,5 @@
 /* Categories of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/categ_Sm.c b/lib/unictype/categ_Sm.c
index a170ebe3df..d24fb10044 100644
--- a/lib/unictype/categ_Sm.c
+++ b/lib/unictype/categ_Sm.c
@@ -1,5 +1,5 @@
 /* Categories of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/categ_So.c b/lib/unictype/categ_So.c
index 962a078381..0ad889da8a 100644
--- a/lib/unictype/categ_So.c
+++ b/lib/unictype/categ_So.c
@@ -1,5 +1,5 @@
 /* Categories of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/categ_Z.c b/lib/unictype/categ_Z.c
index 0cfda61694..598b701d66 100644
--- a/lib/unictype/categ_Z.c
+++ b/lib/unictype/categ_Z.c
@@ -1,5 +1,5 @@
 /* Categories of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/categ_Zl.c b/lib/unictype/categ_Zl.c
index 6866a31409..d33d42c2a9 100644
--- a/lib/unictype/categ_Zl.c
+++ b/lib/unictype/categ_Zl.c
@@ -1,5 +1,5 @@
 /* Categories of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/categ_Zp.c b/lib/unictype/categ_Zp.c
index aa4360f85c..ebc592db59 100644
--- a/lib/unictype/categ_Zp.c
+++ b/lib/unictype/categ_Zp.c
@@ -1,5 +1,5 @@
 /* Categories of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/categ_Zs.c b/lib/unictype/categ_Zs.c
index 3e5c58d8fa..973eec9fa7 100644
--- a/lib/unictype/categ_Zs.c
+++ b/lib/unictype/categ_Zs.c
@@ -1,5 +1,5 @@
 /* Categories of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/categ_and.c b/lib/unictype/categ_and.c
index 4b0b07e0e1..4a3e8a34ca 100644
--- a/lib/unictype/categ_and.c
+++ b/lib/unictype/categ_and.c
@@ -1,5 +1,5 @@
 /* Categories of Unicode characters.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2007.
 
    This file is free software.
diff --git a/lib/unictype/categ_and_not.c b/lib/unictype/categ_and_not.c
index b5de520dd7..8f5c624539 100644
--- a/lib/unictype/categ_and_not.c
+++ b/lib/unictype/categ_and_not.c
@@ -1,5 +1,5 @@
 /* Categories of Unicode characters.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2007.
 
    This file is free software.
diff --git a/lib/unictype/categ_byname.c b/lib/unictype/categ_byname.c
index ce2b3ecf63..4cf47ab3d6 100644
--- a/lib/unictype/categ_byname.c
+++ b/lib/unictype/categ_byname.c
@@ -1,5 +1,5 @@
 /* Categories of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/categ_byname.gperf b/lib/unictype/categ_byname.gperf
index b699a33edd..8b0f51d52d 100644
--- a/lib/unictype/categ_byname.gperf
+++ b/lib/unictype/categ_byname.gperf
@@ -1,5 +1,5 @@
 /* Categories of Unicode characters.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software.
    It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
diff --git a/lib/unictype/categ_longname.c b/lib/unictype/categ_longname.c
index cdcebb0364..420467e99b 100644
--- a/lib/unictype/categ_longname.c
+++ b/lib/unictype/categ_longname.c
@@ -1,5 +1,5 @@
 /* Categories of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software.
diff --git a/lib/unictype/categ_name.c b/lib/unictype/categ_name.c
index 44b42c8e15..90fb40d210 100644
--- a/lib/unictype/categ_name.c
+++ b/lib/unictype/categ_name.c
@@ -1,5 +1,5 @@
 /* Categories of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/categ_none.c b/lib/unictype/categ_none.c
index cb91810bcf..89f4949333 100644
--- a/lib/unictype/categ_none.c
+++ b/lib/unictype/categ_none.c
@@ -1,5 +1,5 @@
 /* Categories of Unicode characters.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2007.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/unictype/categ_of.c b/lib/unictype/categ_of.c
index 99101b5e34..87465272d0 100644
--- a/lib/unictype/categ_of.c
+++ b/lib/unictype/categ_of.c
@@ -1,5 +1,5 @@
 /* Categories of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/unictype/categ_or.c b/lib/unictype/categ_or.c
index cea9b23670..01156bc2d8 100644
--- a/lib/unictype/categ_or.c
+++ b/lib/unictype/categ_or.c
@@ -1,5 +1,5 @@
 /* Categories of Unicode characters.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2007.
 
    This file is free software.
diff --git a/lib/unictype/categ_test.c b/lib/unictype/categ_test.c
index 1861433211..c3f146d286 100644
--- a/lib/unictype/categ_test.c
+++ b/lib/unictype/categ_test.c
@@ -1,5 +1,5 @@
 /* Categories of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/unictype/combiningclass.c b/lib/unictype/combiningclass.c
index 4c691d50a1..6a9a98639f 100644
--- a/lib/unictype/combiningclass.c
+++ b/lib/unictype/combiningclass.c
@@ -1,5 +1,5 @@
 /* Combining classes of Unicode characters.
-   Copyright (C) 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/unictype/combiningclass_byname.c 
b/lib/unictype/combiningclass_byname.c
index d02d17a8d5..954b4db2c2 100644
--- a/lib/unictype/combiningclass_byname.c
+++ b/lib/unictype/combiningclass_byname.c
@@ -1,5 +1,5 @@
 /* Canonical combining classes of Unicode characters.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software.
diff --git a/lib/unictype/combiningclass_byname.gperf 
b/lib/unictype/combiningclass_byname.gperf
index f4acbc0df4..ee30cfaa84 100644
--- a/lib/unictype/combiningclass_byname.gperf
+++ b/lib/unictype/combiningclass_byname.gperf
@@ -1,5 +1,5 @@
 /* Categories of Unicode characters.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software.
    It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
diff --git a/lib/unictype/combiningclass_longname.c 
b/lib/unictype/combiningclass_longname.c
index 5c46a7895b..ba5d512ec4 100644
--- a/lib/unictype/combiningclass_longname.c
+++ b/lib/unictype/combiningclass_longname.c
@@ -1,5 +1,5 @@
 /* Canonical combining classes of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software.
diff --git a/lib/unictype/combiningclass_name.c 
b/lib/unictype/combiningclass_name.c
index ee68ac654e..ba4ca5b1a8 100644
--- a/lib/unictype/combiningclass_name.c
+++ b/lib/unictype/combiningclass_name.c
@@ -1,5 +1,5 @@
 /* Canonical combining classes of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software.
diff --git a/lib/unictype/ctype_alnum.c b/lib/unictype/ctype_alnum.c
index c891df3f1f..59a82a6b8b 100644
--- a/lib/unictype/ctype_alnum.c
+++ b/lib/unictype/ctype_alnum.c
@@ -1,5 +1,5 @@
 /* ISO C <ctype.h> like properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/ctype_alpha.c b/lib/unictype/ctype_alpha.c
index 5c0ddd66d0..a109feb4c5 100644
--- a/lib/unictype/ctype_alpha.c
+++ b/lib/unictype/ctype_alpha.c
@@ -1,5 +1,5 @@
 /* ISO C <ctype.h> like properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/ctype_blank.c b/lib/unictype/ctype_blank.c
index e89423e0dc..0d1b8fccc6 100644
--- a/lib/unictype/ctype_blank.c
+++ b/lib/unictype/ctype_blank.c
@@ -1,5 +1,5 @@
 /* ISO C <ctype.h> like properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/ctype_cntrl.c b/lib/unictype/ctype_cntrl.c
index 5160e5afa2..8fc1016d84 100644
--- a/lib/unictype/ctype_cntrl.c
+++ b/lib/unictype/ctype_cntrl.c
@@ -1,5 +1,5 @@
 /* ISO C <ctype.h> like properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/ctype_digit.c b/lib/unictype/ctype_digit.c
index 0d69d33685..67f6d82b75 100644
--- a/lib/unictype/ctype_digit.c
+++ b/lib/unictype/ctype_digit.c
@@ -1,5 +1,5 @@
 /* ISO C <ctype.h> like properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/ctype_graph.c b/lib/unictype/ctype_graph.c
index 1c86aa1eb5..a129788598 100644
--- a/lib/unictype/ctype_graph.c
+++ b/lib/unictype/ctype_graph.c
@@ -1,5 +1,5 @@
 /* ISO C <ctype.h> like properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/ctype_lower.c b/lib/unictype/ctype_lower.c
index 327a50c8d0..0adf368c20 100644
--- a/lib/unictype/ctype_lower.c
+++ b/lib/unictype/ctype_lower.c
@@ -1,5 +1,5 @@
 /* ISO C <ctype.h> like properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/ctype_print.c b/lib/unictype/ctype_print.c
index 24a21894af..4a61960f55 100644
--- a/lib/unictype/ctype_print.c
+++ b/lib/unictype/ctype_print.c
@@ -1,5 +1,5 @@
 /* ISO C <ctype.h> like properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/ctype_punct.c b/lib/unictype/ctype_punct.c
index 7b5e8f5ab2..425b9e4837 100644
--- a/lib/unictype/ctype_punct.c
+++ b/lib/unictype/ctype_punct.c
@@ -1,5 +1,5 @@
 /* ISO C <ctype.h> like properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/ctype_space.c b/lib/unictype/ctype_space.c
index 39662bc3fa..b6f0364216 100644
--- a/lib/unictype/ctype_space.c
+++ b/lib/unictype/ctype_space.c
@@ -1,5 +1,5 @@
 /* ISO C <ctype.h> like properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/ctype_upper.c b/lib/unictype/ctype_upper.c
index bf588ef5c4..6b6f423a17 100644
--- a/lib/unictype/ctype_upper.c
+++ b/lib/unictype/ctype_upper.c
@@ -1,5 +1,5 @@
 /* ISO C <ctype.h> like properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/ctype_xdigit.c b/lib/unictype/ctype_xdigit.c
index e51397dd95..d7f877481b 100644
--- a/lib/unictype/ctype_xdigit.c
+++ b/lib/unictype/ctype_xdigit.c
@@ -1,5 +1,5 @@
 /* ISO C <ctype.h> like properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/decdigit.c b/lib/unictype/decdigit.c
index f66b11ca46..6b4d3df40e 100644
--- a/lib/unictype/decdigit.c
+++ b/lib/unictype/decdigit.c
@@ -1,5 +1,5 @@
 /* Values of decimal digit Unicode characters.
-   Copyright (C) 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/digit.c b/lib/unictype/digit.c
index 3704d7b50e..db4d5ab203 100644
--- a/lib/unictype/digit.c
+++ b/lib/unictype/digit.c
@@ -1,5 +1,5 @@
 /* Values of digit Unicode characters.
-   Copyright (C) 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/identsyntaxmap.h b/lib/unictype/identsyntaxmap.h
index 48fe76225b..6aa66354c9 100644
--- a/lib/unictype/identsyntaxmap.h
+++ b/lib/unictype/identsyntaxmap.h
@@ -1,5 +1,5 @@
 /* Three-level bitmap lookup.
-   Copyright (C) 2000-2002, 2005-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2000-2002, 2005-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2000-2002.
 
    This file is free software.
diff --git a/lib/unictype/joininggroup_byname.c 
b/lib/unictype/joininggroup_byname.c
index cf7efa93a0..e7ee563c30 100644
--- a/lib/unictype/joininggroup_byname.c
+++ b/lib/unictype/joininggroup_byname.c
@@ -1,5 +1,5 @@
 /* Arabic joining group of Unicode characters.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software.
diff --git a/lib/unictype/joininggroup_byname.gperf 
b/lib/unictype/joininggroup_byname.gperf
index 3feadf8006..9ab30e0bc9 100644
--- a/lib/unictype/joininggroup_byname.gperf
+++ b/lib/unictype/joininggroup_byname.gperf
@@ -1,5 +1,5 @@
 /* Arabic joining group of Unicode characters.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software.
    It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
diff --git a/lib/unictype/joininggroup_name.c b/lib/unictype/joininggroup_name.c
index 6c9a1be57a..4514774204 100644
--- a/lib/unictype/joininggroup_name.c
+++ b/lib/unictype/joininggroup_name.c
@@ -1,5 +1,5 @@
 /* Arabic joining group of Unicode characters.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software.
diff --git a/lib/unictype/joininggroup_name.h b/lib/unictype/joininggroup_name.h
index 639422c107..d9125845dc 100644
--- a/lib/unictype/joininggroup_name.h
+++ b/lib/unictype/joininggroup_name.h
@@ -1,5 +1,5 @@
 /* Arabic joining group of Unicode characters.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software.
diff --git a/lib/unictype/joininggroup_of.c b/lib/unictype/joininggroup_of.c
index e1dcb1d139..70c44de10e 100644
--- a/lib/unictype/joininggroup_of.c
+++ b/lib/unictype/joininggroup_of.c
@@ -1,5 +1,5 @@
 /* Arabic joining group of Unicode characters.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software.
diff --git a/lib/unictype/joiningtype_byname.c 
b/lib/unictype/joiningtype_byname.c
index 92348e6c81..0a5a096240 100644
--- a/lib/unictype/joiningtype_byname.c
+++ b/lib/unictype/joiningtype_byname.c
@@ -1,5 +1,5 @@
 /* Arabic joining type of Unicode characters.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software.
diff --git a/lib/unictype/joiningtype_byname.gperf 
b/lib/unictype/joiningtype_byname.gperf
index 417d0acd8b..9ddb92e0e7 100644
--- a/lib/unictype/joiningtype_byname.gperf
+++ b/lib/unictype/joiningtype_byname.gperf
@@ -1,5 +1,5 @@
 /* Arabic joining type of Unicode characters.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software.
    It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
diff --git a/lib/unictype/joiningtype_longname.c 
b/lib/unictype/joiningtype_longname.c
index 819263289d..9c3396f215 100644
--- a/lib/unictype/joiningtype_longname.c
+++ b/lib/unictype/joiningtype_longname.c
@@ -1,5 +1,5 @@
 /* Arabic joining type of Unicode characters.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software.
diff --git a/lib/unictype/joiningtype_name.c b/lib/unictype/joiningtype_name.c
index cccc163457..2c2d8334b3 100644
--- a/lib/unictype/joiningtype_name.c
+++ b/lib/unictype/joiningtype_name.c
@@ -1,5 +1,5 @@
 /* Arabic joining type of Unicode characters.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software.
diff --git a/lib/unictype/joiningtype_of.c b/lib/unictype/joiningtype_of.c
index 573c0e6980..14a8e718f5 100644
--- a/lib/unictype/joiningtype_of.c
+++ b/lib/unictype/joiningtype_of.c
@@ -1,5 +1,5 @@
 /* Arabic joining type of Unicode characters.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/unictype/mirror.c b/lib/unictype/mirror.c
index 0efb7c2b7b..8cc6873c72 100644
--- a/lib/unictype/mirror.c
+++ b/lib/unictype/mirror.c
@@ -1,5 +1,5 @@
 /* Mirrored Unicode characters.
-   Copyright (C) 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/numeric.c b/lib/unictype/numeric.c
index 0594dd67ef..42d9e373ea 100644
--- a/lib/unictype/numeric.c
+++ b/lib/unictype/numeric.c
@@ -1,5 +1,5 @@
 /* Values of numeric Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_alphabetic.c b/lib/unictype/pr_alphabetic.c
index a9435f5065..3c8fa491ac 100644
--- a/lib/unictype/pr_alphabetic.c
+++ b/lib/unictype/pr_alphabetic.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_ascii_hex_digit.c 
b/lib/unictype/pr_ascii_hex_digit.c
index 054d8af85b..ca1cf4396b 100644
--- a/lib/unictype/pr_ascii_hex_digit.c
+++ b/lib/unictype/pr_ascii_hex_digit.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_bidi_arabic_digit.c 
b/lib/unictype/pr_bidi_arabic_digit.c
index 882976a843..cf26379b5a 100644
--- a/lib/unictype/pr_bidi_arabic_digit.c
+++ b/lib/unictype/pr_bidi_arabic_digit.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_bidi_arabic_right_to_left.c 
b/lib/unictype/pr_bidi_arabic_right_to_left.c
index abb5bade77..fe5fbf98c7 100644
--- a/lib/unictype/pr_bidi_arabic_right_to_left.c
+++ b/lib/unictype/pr_bidi_arabic_right_to_left.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_bidi_block_separator.c 
b/lib/unictype/pr_bidi_block_separator.c
index 7bcefc2e48..c8d5981ad4 100644
--- a/lib/unictype/pr_bidi_block_separator.c
+++ b/lib/unictype/pr_bidi_block_separator.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_bidi_boundary_neutral.c 
b/lib/unictype/pr_bidi_boundary_neutral.c
index 96f0541932..da7c6ad94c 100644
--- a/lib/unictype/pr_bidi_boundary_neutral.c
+++ b/lib/unictype/pr_bidi_boundary_neutral.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_bidi_common_separator.c 
b/lib/unictype/pr_bidi_common_separator.c
index a8bdccfc55..635bf98784 100644
--- a/lib/unictype/pr_bidi_common_separator.c
+++ b/lib/unictype/pr_bidi_common_separator.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_bidi_control.c b/lib/unictype/pr_bidi_control.c
index be6e68458f..95d2bbd62c 100644
--- a/lib/unictype/pr_bidi_control.c
+++ b/lib/unictype/pr_bidi_control.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_bidi_embedding_or_override.c 
b/lib/unictype/pr_bidi_embedding_or_override.c
index f9f0a1ea78..2741d659d5 100644
--- a/lib/unictype/pr_bidi_embedding_or_override.c
+++ b/lib/unictype/pr_bidi_embedding_or_override.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_bidi_eur_num_separator.c 
b/lib/unictype/pr_bidi_eur_num_separator.c
index 6ece30d6aa..f5ca934472 100644
--- a/lib/unictype/pr_bidi_eur_num_separator.c
+++ b/lib/unictype/pr_bidi_eur_num_separator.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_bidi_eur_num_terminator.c 
b/lib/unictype/pr_bidi_eur_num_terminator.c
index f47aea5e1f..10f9f8834a 100644
--- a/lib/unictype/pr_bidi_eur_num_terminator.c
+++ b/lib/unictype/pr_bidi_eur_num_terminator.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_bidi_european_digit.c 
b/lib/unictype/pr_bidi_european_digit.c
index 5c25f13328..b95d9a5157 100644
--- a/lib/unictype/pr_bidi_european_digit.c
+++ b/lib/unictype/pr_bidi_european_digit.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_bidi_hebrew_right_to_left.c 
b/lib/unictype/pr_bidi_hebrew_right_to_left.c
index 8322eb8eb3..4a28b42ae2 100644
--- a/lib/unictype/pr_bidi_hebrew_right_to_left.c
+++ b/lib/unictype/pr_bidi_hebrew_right_to_left.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_bidi_left_to_right.c 
b/lib/unictype/pr_bidi_left_to_right.c
index 3754d14888..6908f5ea0b 100644
--- a/lib/unictype/pr_bidi_left_to_right.c
+++ b/lib/unictype/pr_bidi_left_to_right.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_bidi_non_spacing_mark.c 
b/lib/unictype/pr_bidi_non_spacing_mark.c
index a2e4257da2..52f7a47051 100644
--- a/lib/unictype/pr_bidi_non_spacing_mark.c
+++ b/lib/unictype/pr_bidi_non_spacing_mark.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_bidi_other_neutral.c 
b/lib/unictype/pr_bidi_other_neutral.c
index 588eb76a45..ab5ca8e571 100644
--- a/lib/unictype/pr_bidi_other_neutral.c
+++ b/lib/unictype/pr_bidi_other_neutral.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_bidi_pdf.c b/lib/unictype/pr_bidi_pdf.c
index 823f497db4..12f5ee3bc1 100644
--- a/lib/unictype/pr_bidi_pdf.c
+++ b/lib/unictype/pr_bidi_pdf.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_bidi_segment_separator.c 
b/lib/unictype/pr_bidi_segment_separator.c
index 9adf59f1fe..b56247546d 100644
--- a/lib/unictype/pr_bidi_segment_separator.c
+++ b/lib/unictype/pr_bidi_segment_separator.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_bidi_whitespace.c 
b/lib/unictype/pr_bidi_whitespace.c
index 6bdb2b8c0b..030ff97154 100644
--- a/lib/unictype/pr_bidi_whitespace.c
+++ b/lib/unictype/pr_bidi_whitespace.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_byname.c b/lib/unictype/pr_byname.c
index 4de1197c2e..8efab4b584 100644
--- a/lib/unictype/pr_byname.c
+++ b/lib/unictype/pr_byname.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2007, 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2007.
 
    This file is free software.
diff --git a/lib/unictype/pr_byname.gperf b/lib/unictype/pr_byname.gperf
index 97c5fae7a2..207deba37b 100644
--- a/lib/unictype/pr_byname.gperf
+++ b/lib/unictype/pr_byname.gperf
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This file is free software.
    It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
diff --git a/lib/unictype/pr_case_ignorable.c b/lib/unictype/pr_case_ignorable.c
index 7983f41f6d..b17b016b92 100644
--- a/lib/unictype/pr_case_ignorable.c
+++ b/lib/unictype/pr_case_ignorable.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software.
diff --git a/lib/unictype/pr_cased.c b/lib/unictype/pr_cased.c
index 7fcd980cd9..3602bb48a9 100644
--- a/lib/unictype/pr_cased.c
+++ b/lib/unictype/pr_cased.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software.
diff --git a/lib/unictype/pr_changes_when_casefolded.c 
b/lib/unictype/pr_changes_when_casefolded.c
index 3621a8e107..9feb198739 100644
--- a/lib/unictype/pr_changes_when_casefolded.c
+++ b/lib/unictype/pr_changes_when_casefolded.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software.
diff --git a/lib/unictype/pr_changes_when_casemapped.c 
b/lib/unictype/pr_changes_when_casemapped.c
index 2156f41314..86f71350ae 100644
--- a/lib/unictype/pr_changes_when_casemapped.c
+++ b/lib/unictype/pr_changes_when_casemapped.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software.
diff --git a/lib/unictype/pr_changes_when_lowercased.c 
b/lib/unictype/pr_changes_when_lowercased.c
index 86d35450e3..082cf96614 100644
--- a/lib/unictype/pr_changes_when_lowercased.c
+++ b/lib/unictype/pr_changes_when_lowercased.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software.
diff --git a/lib/unictype/pr_changes_when_titlecased.c 
b/lib/unictype/pr_changes_when_titlecased.c
index c684587d03..9e2aaba6f7 100644
--- a/lib/unictype/pr_changes_when_titlecased.c
+++ b/lib/unictype/pr_changes_when_titlecased.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software.
diff --git a/lib/unictype/pr_changes_when_uppercased.c 
b/lib/unictype/pr_changes_when_uppercased.c
index de30a60843..9884d5980a 100644
--- a/lib/unictype/pr_changes_when_uppercased.c
+++ b/lib/unictype/pr_changes_when_uppercased.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software.
diff --git a/lib/unictype/pr_combining.c b/lib/unictype/pr_combining.c
index 7627a5f355..e9d38759ae 100644
--- a/lib/unictype/pr_combining.c
+++ b/lib/unictype/pr_combining.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_composite.c b/lib/unictype/pr_composite.c
index 5317ef5a31..400e7a2e2e 100644
--- a/lib/unictype/pr_composite.c
+++ b/lib/unictype/pr_composite.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_currency_symbol.c 
b/lib/unictype/pr_currency_symbol.c
index e888136f0b..9ecd3d92cd 100644
--- a/lib/unictype/pr_currency_symbol.c
+++ b/lib/unictype/pr_currency_symbol.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_dash.c b/lib/unictype/pr_dash.c
index 64b027b607..e54c247a10 100644
--- a/lib/unictype/pr_dash.c
+++ b/lib/unictype/pr_dash.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_decimal_digit.c b/lib/unictype/pr_decimal_digit.c
index 0040429835..c263393347 100644
--- a/lib/unictype/pr_decimal_digit.c
+++ b/lib/unictype/pr_decimal_digit.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_default_ignorable_code_point.c 
b/lib/unictype/pr_default_ignorable_code_point.c
index 328e008aa4..ba840631cd 100644
--- a/lib/unictype/pr_default_ignorable_code_point.c
+++ b/lib/unictype/pr_default_ignorable_code_point.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_deprecated.c b/lib/unictype/pr_deprecated.c
index 24b401564d..797e5ef262 100644
--- a/lib/unictype/pr_deprecated.c
+++ b/lib/unictype/pr_deprecated.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_diacritic.c b/lib/unictype/pr_diacritic.c
index 232089f304..04735c4c63 100644
--- a/lib/unictype/pr_diacritic.c
+++ b/lib/unictype/pr_diacritic.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_emoji.c b/lib/unictype/pr_emoji.c
index dc10672275..7757c4055f 100644
--- a/lib/unictype/pr_emoji.c
+++ b/lib/unictype/pr_emoji.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_emoji_component.c 
b/lib/unictype/pr_emoji_component.c
index 17f95a7eff..53267ac59e 100644
--- a/lib/unictype/pr_emoji_component.c
+++ b/lib/unictype/pr_emoji_component.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_emoji_modifier.c b/lib/unictype/pr_emoji_modifier.c
index 85107dca3c..2c1fbc19c0 100644
--- a/lib/unictype/pr_emoji_modifier.c
+++ b/lib/unictype/pr_emoji_modifier.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_emoji_modifier_base.c 
b/lib/unictype/pr_emoji_modifier_base.c
index be68f638d4..8055e902b9 100644
--- a/lib/unictype/pr_emoji_modifier_base.c
+++ b/lib/unictype/pr_emoji_modifier_base.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_emoji_presentation.c 
b/lib/unictype/pr_emoji_presentation.c
index 9b2bb49394..6fd130c6a2 100644
--- a/lib/unictype/pr_emoji_presentation.c
+++ b/lib/unictype/pr_emoji_presentation.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_extended_pictographic.c 
b/lib/unictype/pr_extended_pictographic.c
index 0029947e5a..c362e7817c 100644
--- a/lib/unictype/pr_extended_pictographic.c
+++ b/lib/unictype/pr_extended_pictographic.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_extender.c b/lib/unictype/pr_extender.c
index f30137815a..26d92d4181 100644
--- a/lib/unictype/pr_extender.c
+++ b/lib/unictype/pr_extender.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_format_control.c b/lib/unictype/pr_format_control.c
index 19085d6626..74995e1a11 100644
--- a/lib/unictype/pr_format_control.c
+++ b/lib/unictype/pr_format_control.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_grapheme_base.c b/lib/unictype/pr_grapheme_base.c
index bf70b46ae8..8a7ac5aeb4 100644
--- a/lib/unictype/pr_grapheme_base.c
+++ b/lib/unictype/pr_grapheme_base.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_grapheme_extend.c 
b/lib/unictype/pr_grapheme_extend.c
index 9122b9df06..5e25648952 100644
--- a/lib/unictype/pr_grapheme_extend.c
+++ b/lib/unictype/pr_grapheme_extend.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_grapheme_link.c b/lib/unictype/pr_grapheme_link.c
index 77afd57d9b..d4ee8280c7 100644
--- a/lib/unictype/pr_grapheme_link.c
+++ b/lib/unictype/pr_grapheme_link.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_hex_digit.c b/lib/unictype/pr_hex_digit.c
index 507be0a75b..6f0b52e41b 100644
--- a/lib/unictype/pr_hex_digit.c
+++ b/lib/unictype/pr_hex_digit.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_hyphen.c b/lib/unictype/pr_hyphen.c
index 0752208805..5a2299eaf8 100644
--- a/lib/unictype/pr_hyphen.c
+++ b/lib/unictype/pr_hyphen.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_id_continue.c b/lib/unictype/pr_id_continue.c
index d9d5a81253..09beaa8c0e 100644
--- a/lib/unictype/pr_id_continue.c
+++ b/lib/unictype/pr_id_continue.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_id_start.c b/lib/unictype/pr_id_start.c
index c05535fb11..6b29eb01fa 100644
--- a/lib/unictype/pr_id_start.c
+++ b/lib/unictype/pr_id_start.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_ideographic.c b/lib/unictype/pr_ideographic.c
index f2e5a00a7d..6907f04403 100644
--- a/lib/unictype/pr_ideographic.c
+++ b/lib/unictype/pr_ideographic.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_ids_binary_operator.c 
b/lib/unictype/pr_ids_binary_operator.c
index 6faf78ed23..048f1bd092 100644
--- a/lib/unictype/pr_ids_binary_operator.c
+++ b/lib/unictype/pr_ids_binary_operator.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_ids_trinary_operator.c 
b/lib/unictype/pr_ids_trinary_operator.c
index ceeae94727..2988ee976e 100644
--- a/lib/unictype/pr_ids_trinary_operator.c
+++ b/lib/unictype/pr_ids_trinary_operator.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_ignorable_control.c 
b/lib/unictype/pr_ignorable_control.c
index a503c34485..b1a172e91a 100644
--- a/lib/unictype/pr_ignorable_control.c
+++ b/lib/unictype/pr_ignorable_control.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_iso_control.c b/lib/unictype/pr_iso_control.c
index fc5cefc23e..5d34183acf 100644
--- a/lib/unictype/pr_iso_control.c
+++ b/lib/unictype/pr_iso_control.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_join_control.c b/lib/unictype/pr_join_control.c
index 94eeb7cf67..202f2a3af7 100644
--- a/lib/unictype/pr_join_control.c
+++ b/lib/unictype/pr_join_control.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_left_of_pair.c b/lib/unictype/pr_left_of_pair.c
index 24230cb904..8e70260d2c 100644
--- a/lib/unictype/pr_left_of_pair.c
+++ b/lib/unictype/pr_left_of_pair.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_line_separator.c b/lib/unictype/pr_line_separator.c
index 5c33f3ee25..bf0f3c2a2d 100644
--- a/lib/unictype/pr_line_separator.c
+++ b/lib/unictype/pr_line_separator.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_logical_order_exception.c 
b/lib/unictype/pr_logical_order_exception.c
index 1f52108643..c0cd577567 100644
--- a/lib/unictype/pr_logical_order_exception.c
+++ b/lib/unictype/pr_logical_order_exception.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_lowercase.c b/lib/unictype/pr_lowercase.c
index c6d61e446e..bf0eab054c 100644
--- a/lib/unictype/pr_lowercase.c
+++ b/lib/unictype/pr_lowercase.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_math.c b/lib/unictype/pr_math.c
index aea7c02f83..0b1da81d7f 100644
--- a/lib/unictype/pr_math.c
+++ b/lib/unictype/pr_math.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_non_break.c b/lib/unictype/pr_non_break.c
index a84b31630a..90a123e3c0 100644
--- a/lib/unictype/pr_non_break.c
+++ b/lib/unictype/pr_non_break.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_not_a_character.c 
b/lib/unictype/pr_not_a_character.c
index 30bfb0ff37..b3074cfa03 100644
--- a/lib/unictype/pr_not_a_character.c
+++ b/lib/unictype/pr_not_a_character.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_numeric.c b/lib/unictype/pr_numeric.c
index 064bda64fa..ebe14786f8 100644
--- a/lib/unictype/pr_numeric.c
+++ b/lib/unictype/pr_numeric.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_other_alphabetic.c 
b/lib/unictype/pr_other_alphabetic.c
index d60238b8a7..d69ccb46c5 100644
--- a/lib/unictype/pr_other_alphabetic.c
+++ b/lib/unictype/pr_other_alphabetic.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_other_default_ignorable_code_point.c 
b/lib/unictype/pr_other_default_ignorable_code_point.c
index 600e352b44..a2cb8be5cf 100644
--- a/lib/unictype/pr_other_default_ignorable_code_point.c
+++ b/lib/unictype/pr_other_default_ignorable_code_point.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_other_grapheme_extend.c 
b/lib/unictype/pr_other_grapheme_extend.c
index 8b5dda5d18..7a8fe9b295 100644
--- a/lib/unictype/pr_other_grapheme_extend.c
+++ b/lib/unictype/pr_other_grapheme_extend.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_other_id_continue.c 
b/lib/unictype/pr_other_id_continue.c
index 29db052a4c..f37ba38053 100644
--- a/lib/unictype/pr_other_id_continue.c
+++ b/lib/unictype/pr_other_id_continue.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_other_id_start.c b/lib/unictype/pr_other_id_start.c
index ac1f5c48b5..5e136f680e 100644
--- a/lib/unictype/pr_other_id_start.c
+++ b/lib/unictype/pr_other_id_start.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_other_lowercase.c 
b/lib/unictype/pr_other_lowercase.c
index 62fcd07cea..ee663d8e69 100644
--- a/lib/unictype/pr_other_lowercase.c
+++ b/lib/unictype/pr_other_lowercase.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_other_math.c b/lib/unictype/pr_other_math.c
index cf1f926535..d9d5f8b4a3 100644
--- a/lib/unictype/pr_other_math.c
+++ b/lib/unictype/pr_other_math.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_other_uppercase.c 
b/lib/unictype/pr_other_uppercase.c
index e564b438d4..c8c77ba3d3 100644
--- a/lib/unictype/pr_other_uppercase.c
+++ b/lib/unictype/pr_other_uppercase.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_paired_punctuation.c 
b/lib/unictype/pr_paired_punctuation.c
index c8bcadb099..e24ffe913b 100644
--- a/lib/unictype/pr_paired_punctuation.c
+++ b/lib/unictype/pr_paired_punctuation.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_paragraph_separator.c 
b/lib/unictype/pr_paragraph_separator.c
index 67ec5d62d8..027bfbb80f 100644
--- a/lib/unictype/pr_paragraph_separator.c
+++ b/lib/unictype/pr_paragraph_separator.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_pattern_syntax.c b/lib/unictype/pr_pattern_syntax.c
index 0624f0f19f..533d994a03 100644
--- a/lib/unictype/pr_pattern_syntax.c
+++ b/lib/unictype/pr_pattern_syntax.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_pattern_white_space.c 
b/lib/unictype/pr_pattern_white_space.c
index 0847f66ab0..f0cc4452b5 100644
--- a/lib/unictype/pr_pattern_white_space.c
+++ b/lib/unictype/pr_pattern_white_space.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_private_use.c b/lib/unictype/pr_private_use.c
index 2fc785c0a4..e21d43de61 100644
--- a/lib/unictype/pr_private_use.c
+++ b/lib/unictype/pr_private_use.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_punctuation.c b/lib/unictype/pr_punctuation.c
index 1509143a6e..a002cda845 100644
--- a/lib/unictype/pr_punctuation.c
+++ b/lib/unictype/pr_punctuation.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_quotation_mark.c b/lib/unictype/pr_quotation_mark.c
index e8e51b5b72..218b2e50e9 100644
--- a/lib/unictype/pr_quotation_mark.c
+++ b/lib/unictype/pr_quotation_mark.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_radical.c b/lib/unictype/pr_radical.c
index dfc9585ce6..3bbed44da4 100644
--- a/lib/unictype/pr_radical.c
+++ b/lib/unictype/pr_radical.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_regional_indicator.c 
b/lib/unictype/pr_regional_indicator.c
index 47044957ec..cd9ad7199b 100644
--- a/lib/unictype/pr_regional_indicator.c
+++ b/lib/unictype/pr_regional_indicator.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2021-2022 Free Software Foundation, Inc.
+   Copyright (C) 2021-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2021.
 
    This file is free software.
diff --git a/lib/unictype/pr_sentence_terminal.c 
b/lib/unictype/pr_sentence_terminal.c
index 3a727eeaa5..c00e59c8f5 100644
--- a/lib/unictype/pr_sentence_terminal.c
+++ b/lib/unictype/pr_sentence_terminal.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_soft_dotted.c b/lib/unictype/pr_soft_dotted.c
index daf812d049..1c66b0c59a 100644
--- a/lib/unictype/pr_soft_dotted.c
+++ b/lib/unictype/pr_soft_dotted.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_space.c b/lib/unictype/pr_space.c
index 255a663726..a0c20821d7 100644
--- a/lib/unictype/pr_space.c
+++ b/lib/unictype/pr_space.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_terminal_punctuation.c 
b/lib/unictype/pr_terminal_punctuation.c
index 8363cb18fa..6ef4b5ad63 100644
--- a/lib/unictype/pr_terminal_punctuation.c
+++ b/lib/unictype/pr_terminal_punctuation.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_test.c b/lib/unictype/pr_test.c
index 02d0e77ea2..a55e93dda3 100644
--- a/lib/unictype/pr_test.c
+++ b/lib/unictype/pr_test.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2005-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2005-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_titlecase.c b/lib/unictype/pr_titlecase.c
index ef827dfb49..248f927c53 100644
--- a/lib/unictype/pr_titlecase.c
+++ b/lib/unictype/pr_titlecase.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_unassigned_code_value.c 
b/lib/unictype/pr_unassigned_code_value.c
index 0c38074bbc..bd3db6b0cf 100644
--- a/lib/unictype/pr_unassigned_code_value.c
+++ b/lib/unictype/pr_unassigned_code_value.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_unified_ideograph.c 
b/lib/unictype/pr_unified_ideograph.c
index af4875bcf1..c19bdbf131 100644
--- a/lib/unictype/pr_unified_ideograph.c
+++ b/lib/unictype/pr_unified_ideograph.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_uppercase.c b/lib/unictype/pr_uppercase.c
index 5ef082f015..823628fd02 100644
--- a/lib/unictype/pr_uppercase.c
+++ b/lib/unictype/pr_uppercase.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_variation_selector.c 
b/lib/unictype/pr_variation_selector.c
index 709aaae54e..2098e943ab 100644
--- a/lib/unictype/pr_variation_selector.c
+++ b/lib/unictype/pr_variation_selector.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_white_space.c b/lib/unictype/pr_white_space.c
index 8a05810c5c..3a5bc9ec3b 100644
--- a/lib/unictype/pr_white_space.c
+++ b/lib/unictype/pr_white_space.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_xid_continue.c b/lib/unictype/pr_xid_continue.c
index 00f0f96aee..fe1a613077 100644
--- a/lib/unictype/pr_xid_continue.c
+++ b/lib/unictype/pr_xid_continue.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_xid_start.c b/lib/unictype/pr_xid_start.c
index 15710e25c6..b47bee436d 100644
--- a/lib/unictype/pr_xid_start.c
+++ b/lib/unictype/pr_xid_start.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/pr_zero_width.c b/lib/unictype/pr_zero_width.c
index 995ba22bbd..c7b3741cb3 100644
--- a/lib/unictype/pr_zero_width.c
+++ b/lib/unictype/pr_zero_width.c
@@ -1,5 +1,5 @@
 /* Properties of Unicode characters.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unictype/scripts.c b/lib/unictype/scripts.c
index b730212aa1..8d39595457 100644
--- a/lib/unictype/scripts.c
+++ b/lib/unictype/scripts.c
@@ -1,5 +1,5 @@
 /* Scripts of Unicode characters.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2007.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/unictype/sy_c_ident.c b/lib/unictype/sy_c_ident.c
index a743274682..ea71d14590 100644
--- a/lib/unictype/sy_c_ident.c
+++ b/lib/unictype/sy_c_ident.c
@@ -1,5 +1,5 @@
 /* Syntax properties of Unicode characters.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2007.
 
    This file is free software.
diff --git a/lib/unictype/sy_c_whitespace.c b/lib/unictype/sy_c_whitespace.c
index e5b02fe95e..daebe3de52 100644
--- a/lib/unictype/sy_c_whitespace.c
+++ b/lib/unictype/sy_c_whitespace.c
@@ -1,5 +1,5 @@
 /* Syntax properties of Unicode characters.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2007.
 
    This file is free software.
diff --git a/lib/unictype/sy_java_ident.c b/lib/unictype/sy_java_ident.c
index ba96dd0ecf..144d976f0a 100644
--- a/lib/unictype/sy_java_ident.c
+++ b/lib/unictype/sy_java_ident.c
@@ -1,5 +1,5 @@
 /* Syntax properties of Unicode characters.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2007.
 
    This file is free software.
diff --git a/lib/unictype/sy_java_whitespace.c 
b/lib/unictype/sy_java_whitespace.c
index 56c1f8dd86..b72d7984ce 100644
--- a/lib/unictype/sy_java_whitespace.c
+++ b/lib/unictype/sy_java_whitespace.c
@@ -1,5 +1,5 @@
 /* Syntax properties of Unicode characters.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2007.
 
    This file is free software.
diff --git a/lib/unigbrk.in.h b/lib/unigbrk.in.h
index f1b60e17b9..6e114d893c 100644
--- a/lib/unigbrk.in.h
+++ b/lib/unigbrk.in.h
@@ -1,5 +1,5 @@
 /* Grapheme cluster breaks in Unicode strings.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
    Written by Ben Pfaff <blp@cs.stanford.edu>, 2010.
 
    This file is free software.
diff --git a/lib/unigbrk/u-grapheme-breaks.h b/lib/unigbrk/u-grapheme-breaks.h
index 9adce155f2..56971181ee 100644
--- a/lib/unigbrk/u-grapheme-breaks.h
+++ b/lib/unigbrk/u-grapheme-breaks.h
@@ -1,5 +1,5 @@
 /* Grapheme cluster break function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
    Written by Ben Pfaff <blp@cs.stanford.edu>, 2010.
 
    This file is free software.
diff --git a/lib/unigbrk/u16-grapheme-breaks.c 
b/lib/unigbrk/u16-grapheme-breaks.c
index 439397471d..d9842ad7a6 100644
--- a/lib/unigbrk/u16-grapheme-breaks.c
+++ b/lib/unigbrk/u16-grapheme-breaks.c
@@ -1,5 +1,5 @@
 /* Grapheme cluster breaks function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
    Written by Ben Pfaff <blp@cs.stanford.edu>, 2010.
 
    This file is free software.
diff --git a/lib/unigbrk/u16-grapheme-next.c b/lib/unigbrk/u16-grapheme-next.c
index 79ba2ee1d1..0ee41c5d33 100644
--- a/lib/unigbrk/u16-grapheme-next.c
+++ b/lib/unigbrk/u16-grapheme-next.c
@@ -1,5 +1,5 @@
 /* Next grapheme cluster function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
    Written by Ben Pfaff <blp@cs.stanford.edu>, 2010.
 
    This file is free software.
diff --git a/lib/unigbrk/u16-grapheme-prev.c b/lib/unigbrk/u16-grapheme-prev.c
index 6bff956614..6daf15b7eb 100644
--- a/lib/unigbrk/u16-grapheme-prev.c
+++ b/lib/unigbrk/u16-grapheme-prev.c
@@ -1,5 +1,5 @@
 /* Previous grapheme cluster function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
    Written by Ben Pfaff <blp@cs.stanford.edu>, 2010.
 
    This file is free software.
diff --git a/lib/unigbrk/u32-grapheme-breaks.c 
b/lib/unigbrk/u32-grapheme-breaks.c
index 927955845d..f22b9eca97 100644
--- a/lib/unigbrk/u32-grapheme-breaks.c
+++ b/lib/unigbrk/u32-grapheme-breaks.c
@@ -1,5 +1,5 @@
 /* Grapheme cluster breaks function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
    Written by Ben Pfaff <blp@cs.stanford.edu>, 2010.
 
    This file is free software.
diff --git a/lib/unigbrk/u32-grapheme-next.c b/lib/unigbrk/u32-grapheme-next.c
index 419e3d5b72..2ecab02cf6 100644
--- a/lib/unigbrk/u32-grapheme-next.c
+++ b/lib/unigbrk/u32-grapheme-next.c
@@ -1,5 +1,5 @@
 /* Next grapheme cluster function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
    Written by Ben Pfaff <blp@cs.stanford.edu>, 2010.
 
    This file is free software.
diff --git a/lib/unigbrk/u32-grapheme-prev.c b/lib/unigbrk/u32-grapheme-prev.c
index f01c6c11a9..2ffa99e4c0 100644
--- a/lib/unigbrk/u32-grapheme-prev.c
+++ b/lib/unigbrk/u32-grapheme-prev.c
@@ -1,5 +1,5 @@
 /* Previous grapheme cluster function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
    Written by Ben Pfaff <blp@cs.stanford.edu>, 2010.
 
    This file is free software.
diff --git a/lib/unigbrk/u8-grapheme-breaks.c b/lib/unigbrk/u8-grapheme-breaks.c
index b21ba262ba..e396bd3efb 100644
--- a/lib/unigbrk/u8-grapheme-breaks.c
+++ b/lib/unigbrk/u8-grapheme-breaks.c
@@ -1,5 +1,5 @@
 /* Grapheme cluster breaks function.
-   Copyright (C) 2001-2003, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2003, 2006-2023 Free Software Foundation, Inc.
    Written by Ben Pfaff <blp@cs.stanford.edu>, 2010,
    based on code written by Bruno Haible <bruno@clisp.org>, 2009.
 
diff --git a/lib/unigbrk/u8-grapheme-next.c b/lib/unigbrk/u8-grapheme-next.c
index 44df62ee6e..40a605e743 100644
--- a/lib/unigbrk/u8-grapheme-next.c
+++ b/lib/unigbrk/u8-grapheme-next.c
@@ -1,5 +1,5 @@
 /* Next grapheme cluster function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
    Written by Ben Pfaff <blp@cs.stanford.edu>, 2010.
 
    This file is free software.
diff --git a/lib/unigbrk/u8-grapheme-prev.c b/lib/unigbrk/u8-grapheme-prev.c
index f61d01f9d3..226844db08 100644
--- a/lib/unigbrk/u8-grapheme-prev.c
+++ b/lib/unigbrk/u8-grapheme-prev.c
@@ -1,5 +1,5 @@
 /* Previous grapheme cluster function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
    Written by Ben Pfaff <blp@cs.stanford.edu>, 2010.
 
    This file is free software.
diff --git a/lib/unigbrk/uc-gbrk-prop.c b/lib/unigbrk/uc-gbrk-prop.c
index fb618fa1d9..de162b6b6d 100644
--- a/lib/unigbrk/uc-gbrk-prop.c
+++ b/lib/unigbrk/uc-gbrk-prop.c
@@ -1,5 +1,5 @@
 /* Grapheme cluster break property function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
    Written by Ben Pfaff <blp@cs.stanford.edu>, 2010.
 
    This file is free software.
diff --git a/lib/unigbrk/uc-grapheme-breaks.c b/lib/unigbrk/uc-grapheme-breaks.c
index 73130a5969..399d72c862 100644
--- a/lib/unigbrk/uc-grapheme-breaks.c
+++ b/lib/unigbrk/uc-grapheme-breaks.c
@@ -1,5 +1,5 @@
 /* Grapheme cluster breaks function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
    Written by Ben Pfaff <blp@cs.stanford.edu>, 2010.
 
    This file is free software.
diff --git a/lib/unigbrk/uc-is-grapheme-break.c 
b/lib/unigbrk/uc-is-grapheme-break.c
index 2cf82f164f..823b1d05ab 100644
--- a/lib/unigbrk/uc-is-grapheme-break.c
+++ b/lib/unigbrk/uc-is-grapheme-break.c
@@ -1,5 +1,5 @@
 /* Grapheme cluster break function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
    Written by Ben Pfaff <blp@cs.stanford.edu>, 2010.
 
    This file is free software.
diff --git a/lib/unigbrk/ulc-grapheme-breaks.c 
b/lib/unigbrk/ulc-grapheme-breaks.c
index 97e4c9e848..64e4993121 100644
--- a/lib/unigbrk/ulc-grapheme-breaks.c
+++ b/lib/unigbrk/ulc-grapheme-breaks.c
@@ -1,5 +1,5 @@
 /* Grapheme cluster breaks function.
-   Copyright (C) 2001-2003, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2003, 2006-2023 Free Software Foundation, Inc.
    Written by Ben Pfaff <blp@cs.stanford.edu>, 2010,
    based on code written by Bruno Haible <bruno@clisp.org>, 2009.
 
diff --git a/lib/unilbrk.in.h b/lib/unilbrk.in.h
index 7591e63dfe..b3b4a53999 100644
--- a/lib/unilbrk.in.h
+++ b/lib/unilbrk.in.h
@@ -1,5 +1,5 @@
 /* Line breaking of Unicode strings.
-   Copyright (C) 2001-2003, 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2003, 2005-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2001.
 
    This file is free software.
diff --git a/lib/unilbrk/internal.h b/lib/unilbrk/internal.h
index d5843fb5f1..bdb2b02455 100644
--- a/lib/unilbrk/internal.h
+++ b/lib/unilbrk/internal.h
@@ -1,5 +1,5 @@
 /* Internal functions for line breaking of Unicode strings.
-   Copyright (C) 2001-2003, 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2003, 2005-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2021.
 
    This file is free software.
diff --git a/lib/unilbrk/lbrktables.h b/lib/unilbrk/lbrktables.h
index 2f23ea8c16..9db69b8f68 100644
--- a/lib/unilbrk/lbrktables.h
+++ b/lib/unilbrk/lbrktables.h
@@ -1,5 +1,5 @@
 /* Line breaking auxiliary tables.
-   Copyright (C) 2001-2003, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2003, 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2001.
 
    This file is free software.
diff --git a/lib/unilbrk/u16-possible-linebreaks.c 
b/lib/unilbrk/u16-possible-linebreaks.c
index 2b79d6aae4..75d50efc5a 100644
--- a/lib/unilbrk/u16-possible-linebreaks.c
+++ b/lib/unilbrk/u16-possible-linebreaks.c
@@ -1,5 +1,5 @@
 /* Line breaking of UTF-16 strings.
-   Copyright (C) 2001-2003, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2003, 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2001.
 
    This file is free software.
diff --git a/lib/unilbrk/u16-width-linebreaks.c 
b/lib/unilbrk/u16-width-linebreaks.c
index fed5282c2c..44d630e7e8 100644
--- a/lib/unilbrk/u16-width-linebreaks.c
+++ b/lib/unilbrk/u16-width-linebreaks.c
@@ -1,5 +1,5 @@
 /* Line breaking of UTF-16 strings.
-   Copyright (C) 2001-2003, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2003, 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2001.
 
    This file is free software.
diff --git a/lib/unilbrk/u32-possible-linebreaks.c 
b/lib/unilbrk/u32-possible-linebreaks.c
index 05fda96ef0..37215f12e4 100644
--- a/lib/unilbrk/u32-possible-linebreaks.c
+++ b/lib/unilbrk/u32-possible-linebreaks.c
@@ -1,5 +1,5 @@
 /* Line breaking of UTF-32 strings.
-   Copyright (C) 2001-2003, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2003, 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2001.
 
    This file is free software.
diff --git a/lib/unilbrk/u32-width-linebreaks.c 
b/lib/unilbrk/u32-width-linebreaks.c
index 554ef91525..2b22585c86 100644
--- a/lib/unilbrk/u32-width-linebreaks.c
+++ b/lib/unilbrk/u32-width-linebreaks.c
@@ -1,5 +1,5 @@
 /* Line breaking of UTF-32 strings.
-   Copyright (C) 2001-2003, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2003, 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2001.
 
    This file is free software.
diff --git a/lib/unilbrk/u8-possible-linebreaks.c 
b/lib/unilbrk/u8-possible-linebreaks.c
index bc19f8013c..be282e0d03 100644
--- a/lib/unilbrk/u8-possible-linebreaks.c
+++ b/lib/unilbrk/u8-possible-linebreaks.c
@@ -1,5 +1,5 @@
 /* Line breaking of UTF-8 strings.
-   Copyright (C) 2001-2003, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2003, 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2001.
 
    This file is free software.
diff --git a/lib/unilbrk/u8-width-linebreaks.c 
b/lib/unilbrk/u8-width-linebreaks.c
index 9e11ca8713..92c061907f 100644
--- a/lib/unilbrk/u8-width-linebreaks.c
+++ b/lib/unilbrk/u8-width-linebreaks.c
@@ -1,5 +1,5 @@
 /* Line breaking of UTF-8 strings.
-   Copyright (C) 2001-2003, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2003, 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2001.
 
    This file is free software.
diff --git a/lib/unilbrk/ulc-common.c b/lib/unilbrk/ulc-common.c
index f859dae659..91088fea20 100644
--- a/lib/unilbrk/ulc-common.c
+++ b/lib/unilbrk/ulc-common.c
@@ -1,5 +1,5 @@
 /* Line breaking auxiliary functions.
-   Copyright (C) 2001-2003, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2003, 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2001.
 
    This file is free software.
diff --git a/lib/unilbrk/ulc-common.h b/lib/unilbrk/ulc-common.h
index d4e422e59c..fd1d0e600c 100644
--- a/lib/unilbrk/ulc-common.h
+++ b/lib/unilbrk/ulc-common.h
@@ -1,5 +1,5 @@
 /* Line breaking auxiliary functions.
-   Copyright (C) 2001-2003, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2003, 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2001.
 
    This file is free software.
diff --git a/lib/unilbrk/ulc-possible-linebreaks.c 
b/lib/unilbrk/ulc-possible-linebreaks.c
index 7b81685efd..0d180a0ad9 100644
--- a/lib/unilbrk/ulc-possible-linebreaks.c
+++ b/lib/unilbrk/ulc-possible-linebreaks.c
@@ -1,5 +1,5 @@
 /* Line breaking of strings.
-   Copyright (C) 2001-2003, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2003, 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2001.
 
    This file is free software.
diff --git a/lib/unilbrk/ulc-width-linebreaks.c 
b/lib/unilbrk/ulc-width-linebreaks.c
index dc72306c7e..1d44d440b3 100644
--- a/lib/unilbrk/ulc-width-linebreaks.c
+++ b/lib/unilbrk/ulc-width-linebreaks.c
@@ -1,5 +1,5 @@
 /* Line breaking of strings.
-   Copyright (C) 2001-2003, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2003, 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2001.
 
    This file is free software.
diff --git a/lib/uniname.in.h b/lib/uniname.in.h
index affdb73d62..c210092d99 100644
--- a/lib/uniname.in.h
+++ b/lib/uniname.in.h
@@ -1,5 +1,5 @@
 /* Association between Unicode characters and their names.
-   Copyright (C) 2000-2002, 2005, 2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 2000-2002, 2005, 2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/uniname/gen-uninames.lisp b/lib/uniname/gen-uninames.lisp
index 7a46222090..7c550d2678 100755
--- a/lib/uniname/gen-uninames.lisp
+++ b/lib/uniname/gen-uninames.lisp
@@ -2,7 +2,7 @@
 
 ;;; Creation of gnulib's uninames.h from the UnicodeData.txt table.
 
-;;; Copyright (C) 2000-2022 Free Software Foundation, Inc.
+;;; Copyright (C) 2000-2023 Free Software Foundation, Inc.
 ;;; Written by Bruno Haible <bruno@clisp.org>, 2000-12-28.
 ;;;
 ;;; This program is free software.
diff --git a/lib/uniname/uniname.c b/lib/uniname/uniname.c
index 000b00fe26..99b303a3d0 100644
--- a/lib/uniname/uniname.c
+++ b/lib/uniname/uniname.c
@@ -1,5 +1,5 @@
 /* Association between Unicode characters and their names.
-   Copyright (C) 2000-2002, 2005-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2000-2002, 2005-2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software.
    It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
diff --git a/lib/uninorm.in.h b/lib/uninorm.in.h
index fd6affbf25..a5a27b06c6 100644
--- a/lib/uninorm.in.h
+++ b/lib/uninorm.in.h
@@ -1,5 +1,5 @@
 /* Normalization forms (composition and decomposition) of Unicode strings.
-   Copyright (C) 2001-2002, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2002, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/uninorm/canonical-decomposition.c 
b/lib/uninorm/canonical-decomposition.c
index 3bf0a08737..6a7eec9911 100644
--- a/lib/uninorm/canonical-decomposition.c
+++ b/lib/uninorm/canonical-decomposition.c
@@ -1,5 +1,5 @@
 /* Canonical decomposition of Unicode characters.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/uninorm/compat-decomposition.c 
b/lib/uninorm/compat-decomposition.c
index 3e923528bb..1f01cb5b3f 100644
--- a/lib/uninorm/compat-decomposition.c
+++ b/lib/uninorm/compat-decomposition.c
@@ -1,5 +1,5 @@
 /* Compatibility decomposition of Unicode characters.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/uninorm/composition.c b/lib/uninorm/composition.c
index 645099e87a..e0fe3e4360 100644
--- a/lib/uninorm/composition.c
+++ b/lib/uninorm/composition.c
@@ -1,5 +1,5 @@
 /* Canonical composition of Unicode characters.
-   Copyright (C) 2002, 2006, 2009, 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009, 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/uninorm/decompose-internal.c b/lib/uninorm/decompose-internal.c
index 1ed82356f5..2d48c29cf8 100644
--- a/lib/uninorm/decompose-internal.c
+++ b/lib/uninorm/decompose-internal.c
@@ -1,5 +1,5 @@
 /* Decomposition of Unicode strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/uninorm/decompose-internal.h b/lib/uninorm/decompose-internal.h
index 15d8250201..4450f2e88b 100644
--- a/lib/uninorm/decompose-internal.h
+++ b/lib/uninorm/decompose-internal.h
@@ -1,5 +1,5 @@
 /* Decomposition of Unicode strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/uninorm/decomposing-form.c b/lib/uninorm/decomposing-form.c
index 62f10efcfa..b506146ab6 100644
--- a/lib/uninorm/decomposing-form.c
+++ b/lib/uninorm/decomposing-form.c
@@ -1,5 +1,5 @@
 /* Decomposing variant of a normalization form.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/uninorm/decomposition-table.c 
b/lib/uninorm/decomposition-table.c
index 9bd91fc25e..290977d4e4 100644
--- a/lib/uninorm/decomposition-table.c
+++ b/lib/uninorm/decomposition-table.c
@@ -1,5 +1,5 @@
 /* Decomposition of Unicode characters.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/uninorm/decomposition-table.h 
b/lib/uninorm/decomposition-table.h
index 555f34e589..1ae90cf533 100644
--- a/lib/uninorm/decomposition-table.h
+++ b/lib/uninorm/decomposition-table.h
@@ -1,5 +1,5 @@
 /* Decomposition of Unicode characters.
-   Copyright (C) 2001-2003, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2003, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/uninorm/decomposition.c b/lib/uninorm/decomposition.c
index ec5a3d7949..211a91ed8d 100644
--- a/lib/uninorm/decomposition.c
+++ b/lib/uninorm/decomposition.c
@@ -1,5 +1,5 @@
 /* Decomposition of Unicode characters.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/uninorm/nfc.c b/lib/uninorm/nfc.c
index 5dfabbe2c8..6f80f1f056 100644
--- a/lib/uninorm/nfc.c
+++ b/lib/uninorm/nfc.c
@@ -1,5 +1,5 @@
 /* Unicode Normalization Form C.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/uninorm/nfd.c b/lib/uninorm/nfd.c
index e7a122b228..66967fea4e 100644
--- a/lib/uninorm/nfd.c
+++ b/lib/uninorm/nfd.c
@@ -1,5 +1,5 @@
 /* Unicode Normalization Form D.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/uninorm/nfkc.c b/lib/uninorm/nfkc.c
index e1a7caea20..bafccbabb6 100644
--- a/lib/uninorm/nfkc.c
+++ b/lib/uninorm/nfkc.c
@@ -1,5 +1,5 @@
 /* Unicode Normalization Form KC.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/uninorm/nfkd.c b/lib/uninorm/nfkd.c
index fcaed38aee..4c15e16ee0 100644
--- a/lib/uninorm/nfkd.c
+++ b/lib/uninorm/nfkd.c
@@ -1,5 +1,5 @@
 /* Unicode Normalization Form KD.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/uninorm/normalize-internal.h b/lib/uninorm/normalize-internal.h
index aae6dbd3e7..64f8b8d23c 100644
--- a/lib/uninorm/normalize-internal.h
+++ b/lib/uninorm/normalize-internal.h
@@ -1,5 +1,5 @@
 /* Normalization of Unicode strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/uninorm/u-normalize-internal.h 
b/lib/uninorm/u-normalize-internal.h
index f0d9c6e035..f1d165f027 100644
--- a/lib/uninorm/u-normalize-internal.h
+++ b/lib/uninorm/u-normalize-internal.h
@@ -1,5 +1,5 @@
 /* Decomposition and composition of Unicode strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/uninorm/u-normcmp.h b/lib/uninorm/u-normcmp.h
index c709ab7148..90dcf373a7 100644
--- a/lib/uninorm/u-normcmp.h
+++ b/lib/uninorm/u-normcmp.h
@@ -1,5 +1,5 @@
 /* Normalization insensitive comparison of Unicode strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/uninorm/u-normcoll.h b/lib/uninorm/u-normcoll.h
index 3f86ddc239..7523c3ed81 100644
--- a/lib/uninorm/u-normcoll.h
+++ b/lib/uninorm/u-normcoll.h
@@ -1,5 +1,5 @@
 /* Locale dependent, normalization insensitive comparison of Unicode strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/uninorm/u-normxfrm.h b/lib/uninorm/u-normxfrm.h
index a3ca0472e8..2ddf8e279f 100644
--- a/lib/uninorm/u-normxfrm.h
+++ b/lib/uninorm/u-normxfrm.h
@@ -1,5 +1,5 @@
 /* Locale dependent transformation for comparison of Unicode strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/uninorm/u16-normalize.c b/lib/uninorm/u16-normalize.c
index 43e936d0d8..05dda8b427 100644
--- a/lib/uninorm/u16-normalize.c
+++ b/lib/uninorm/u16-normalize.c
@@ -1,5 +1,5 @@
 /* Normalization of UTF-16 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/uninorm/u16-normcmp.c b/lib/uninorm/u16-normcmp.c
index 49c58191b9..b7b9dd5236 100644
--- a/lib/uninorm/u16-normcmp.c
+++ b/lib/uninorm/u16-normcmp.c
@@ -1,5 +1,5 @@
 /* Normalization insensitive comparison of UTF-16 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/uninorm/u16-normcoll.c b/lib/uninorm/u16-normcoll.c
index 4a3d766171..3c97946a39 100644
--- a/lib/uninorm/u16-normcoll.c
+++ b/lib/uninorm/u16-normcoll.c
@@ -1,5 +1,5 @@
 /* Locale dependent, normalization insensitive comparison of UTF-16 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/uninorm/u16-normxfrm.c b/lib/uninorm/u16-normxfrm.c
index f0ca014d57..b8c08db62e 100644
--- a/lib/uninorm/u16-normxfrm.c
+++ b/lib/uninorm/u16-normxfrm.c
@@ -1,5 +1,5 @@
 /* Locale dependent transformation for comparison of UTF-16 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/uninorm/u32-normalize.c b/lib/uninorm/u32-normalize.c
index 6cfab7ed4f..c6ef200498 100644
--- a/lib/uninorm/u32-normalize.c
+++ b/lib/uninorm/u32-normalize.c
@@ -1,5 +1,5 @@
 /* Normalization of UTF-32 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/uninorm/u32-normcmp.c b/lib/uninorm/u32-normcmp.c
index dc88a41e42..e10c487e01 100644
--- a/lib/uninorm/u32-normcmp.c
+++ b/lib/uninorm/u32-normcmp.c
@@ -1,5 +1,5 @@
 /* Normalization insensitive comparison of UTF-32 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/uninorm/u32-normcoll.c b/lib/uninorm/u32-normcoll.c
index d9b6522d81..40b542b9d0 100644
--- a/lib/uninorm/u32-normcoll.c
+++ b/lib/uninorm/u32-normcoll.c
@@ -1,5 +1,5 @@
 /* Locale dependent, normalization insensitive comparison of UTF-32 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/uninorm/u32-normxfrm.c b/lib/uninorm/u32-normxfrm.c
index 098ee2c126..8b2b1a6df4 100644
--- a/lib/uninorm/u32-normxfrm.c
+++ b/lib/uninorm/u32-normxfrm.c
@@ -1,5 +1,5 @@
 /* Locale dependent transformation for comparison of UTF-32 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/uninorm/u8-normalize.c b/lib/uninorm/u8-normalize.c
index fe40d114f6..93c48479f3 100644
--- a/lib/uninorm/u8-normalize.c
+++ b/lib/uninorm/u8-normalize.c
@@ -1,5 +1,5 @@
 /* Normalization of UTF-8 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/uninorm/u8-normcmp.c b/lib/uninorm/u8-normcmp.c
index 3c0f12a5e9..0c669cfd52 100644
--- a/lib/uninorm/u8-normcmp.c
+++ b/lib/uninorm/u8-normcmp.c
@@ -1,5 +1,5 @@
 /* Normalization insensitive comparison of UTF-8 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/uninorm/u8-normcoll.c b/lib/uninorm/u8-normcoll.c
index c7fac9ab4e..73633f4d6e 100644
--- a/lib/uninorm/u8-normcoll.c
+++ b/lib/uninorm/u8-normcoll.c
@@ -1,5 +1,5 @@
 /* Locale dependent, normalization insensitive comparison of UTF-8 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/uninorm/u8-normxfrm.c b/lib/uninorm/u8-normxfrm.c
index 39fb9c8d2f..c70f24f122 100644
--- a/lib/uninorm/u8-normxfrm.c
+++ b/lib/uninorm/u8-normxfrm.c
@@ -1,5 +1,5 @@
 /* Locale dependent transformation for comparison of UTF-8 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/uninorm/uninorm-filter.c b/lib/uninorm/uninorm-filter.c
index 99bb8684e6..5b6ffb00d2 100644
--- a/lib/uninorm/uninorm-filter.c
+++ b/lib/uninorm/uninorm-filter.c
@@ -1,5 +1,5 @@
 /* Stream-based normalization of Unicode strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unistd--.h b/lib/unistd--.h
index d395f7e057..ae4fb6804b 100644
--- a/lib/unistd--.h
+++ b/lib/unistd--.h
@@ -1,6 +1,6 @@
 /* Like unistd.h, but redefine some names to avoid glitches.
 
-   Copyright (C) 2005, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/unistd-safer.h b/lib/unistd-safer.h
index db82c854fc..32686e710d 100644
--- a/lib/unistd-safer.h
+++ b/lib/unistd-safer.h
@@ -1,6 +1,6 @@
 /* Invoke unistd-like functions, but avoid some glitches.
 
-   Copyright (C) 2001, 2003, 2005, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001, 2003, 2005, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/unistd.c b/lib/unistd.c
index 95978e6ad0..be7a825503 100644
--- a/lib/unistd.c
+++ b/lib/unistd.c
@@ -1,6 +1,6 @@
 /* Inline functions for <unistd.h>.
 
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/unistd.in.h b/lib/unistd.in.h
index 50f6e56550..4812fdb112 100644
--- a/lib/unistd.in.h
+++ b/lib/unistd.in.h
@@ -1,5 +1,5 @@
 /* Substitute for and wrapper around <unistd.h>.
-   Copyright (C) 2003-2022 Free Software Foundation, Inc.
+   Copyright (C) 2003-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/unistdio.in.h b/lib/unistdio.in.h
index 8e8dfc2d5a..d3ed13b588 100644
--- a/lib/unistdio.in.h
+++ b/lib/unistdio.in.h
@@ -1,5 +1,5 @@
 /* Elementary Unicode string functions.
-   Copyright (C) 2002, 2005-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2005-2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software.
    It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
diff --git a/lib/unistdio/u-asnprintf.h b/lib/unistdio/u-asnprintf.h
index 632cf95d8e..528d17d112 100644
--- a/lib/unistdio/u-asnprintf.h
+++ b/lib/unistdio/u-asnprintf.h
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2005-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2005-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u-asprintf.h b/lib/unistdio/u-asprintf.h
index febb9940ce..dc45aeda4c 100644
--- a/lib/unistdio/u-asprintf.h
+++ b/lib/unistdio/u-asprintf.h
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2005-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2005-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u-printf-args.c b/lib/unistdio/u-printf-args.c
index e9f69dd6dd..2ed75b509c 100644
--- a/lib/unistdio/u-printf-args.c
+++ b/lib/unistdio/u-printf-args.c
@@ -1,5 +1,5 @@
 /* Decomposed printf argument list.
-   Copyright (C) 1999, 2002, 2006-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2006-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u-printf-args.h b/lib/unistdio/u-printf-args.h
index 42428a33fc..12bbfd9b80 100644
--- a/lib/unistdio/u-printf-args.h
+++ b/lib/unistdio/u-printf-args.h
@@ -1,5 +1,5 @@
 /* Decomposed printf argument list.
-   Copyright (C) 1999, 2002, 2005-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2005-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u-printf-parse.h b/lib/unistdio/u-printf-parse.h
index 48d709f192..77969c216c 100644
--- a/lib/unistdio/u-printf-parse.h
+++ b/lib/unistdio/u-printf-parse.h
@@ -1,5 +1,5 @@
 /* Parse printf format string.
-   Copyright (C) 1999, 2002, 2005, 2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2005, 2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u-snprintf.h b/lib/unistdio/u-snprintf.h
index 5fa4a68e0a..74f8ad65a8 100644
--- a/lib/unistdio/u-snprintf.h
+++ b/lib/unistdio/u-snprintf.h
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2005-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2005-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u-sprintf.h b/lib/unistdio/u-sprintf.h
index a3b345153e..74edc232b9 100644
--- a/lib/unistdio/u-sprintf.h
+++ b/lib/unistdio/u-sprintf.h
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2005-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2005-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u-vasprintf.h b/lib/unistdio/u-vasprintf.h
index 6efbfcf64b..8b9a26b195 100644
--- a/lib/unistdio/u-vasprintf.h
+++ b/lib/unistdio/u-vasprintf.h
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006-2023 Free Software Foundation, Inc.
 
    This file is free software.
    It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
diff --git a/lib/unistdio/u-vsnprintf.h b/lib/unistdio/u-vsnprintf.h
index 9ff937026b..f726f30252 100644
--- a/lib/unistdio/u-vsnprintf.h
+++ b/lib/unistdio/u-vsnprintf.h
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006-2023 Free Software Foundation, Inc.
 
    This file is free software.
    It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
diff --git a/lib/unistdio/u-vsprintf.h b/lib/unistdio/u-vsprintf.h
index 8b1fe7dde7..887eb298c5 100644
--- a/lib/unistdio/u-vsprintf.h
+++ b/lib/unistdio/u-vsprintf.h
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006-2023 Free Software Foundation, Inc.
 
    This file is free software.
    It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
diff --git a/lib/unistdio/u16-asnprintf.c b/lib/unistdio/u16-asnprintf.c
index f855fb3137..a60107f37a 100644
--- a/lib/unistdio/u16-asnprintf.c
+++ b/lib/unistdio/u16-asnprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2005-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2005-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u16-asprintf.c b/lib/unistdio/u16-asprintf.c
index 71f2bf59f3..3f9aae81a2 100644
--- a/lib/unistdio/u16-asprintf.c
+++ b/lib/unistdio/u16-asprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2005-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2005-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u16-printf-parse.c b/lib/unistdio/u16-printf-parse.c
index 07ca7fcfe5..acfded2dd5 100644
--- a/lib/unistdio/u16-printf-parse.c
+++ b/lib/unistdio/u16-printf-parse.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999-2000, 2002, 2006-2007, 2009-2022 Free Software
+   Copyright (C) 1999-2000, 2002, 2006-2007, 2009-2023 Free Software
    Foundation, Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u16-snprintf.c b/lib/unistdio/u16-snprintf.c
index a375be3fe9..5f04e0c4fc 100644
--- a/lib/unistdio/u16-snprintf.c
+++ b/lib/unistdio/u16-snprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2005-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2005-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u16-sprintf.c b/lib/unistdio/u16-sprintf.c
index f45cd83e65..d121847888 100644
--- a/lib/unistdio/u16-sprintf.c
+++ b/lib/unistdio/u16-sprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2005-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2005-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u16-u16-asnprintf.c b/lib/unistdio/u16-u16-asnprintf.c
index d3deea116d..687a926549 100644
--- a/lib/unistdio/u16-u16-asnprintf.c
+++ b/lib/unistdio/u16-u16-asnprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2005-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2005-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u16-u16-asprintf.c b/lib/unistdio/u16-u16-asprintf.c
index a289651945..fdfbf08a54 100644
--- a/lib/unistdio/u16-u16-asprintf.c
+++ b/lib/unistdio/u16-u16-asprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2005-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2005-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u16-u16-snprintf.c b/lib/unistdio/u16-u16-snprintf.c
index 9731e5e623..eff5ed9b51 100644
--- a/lib/unistdio/u16-u16-snprintf.c
+++ b/lib/unistdio/u16-u16-snprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2005-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2005-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u16-u16-sprintf.c b/lib/unistdio/u16-u16-sprintf.c
index 9c88172c47..37067b2fdb 100644
--- a/lib/unistdio/u16-u16-sprintf.c
+++ b/lib/unistdio/u16-u16-sprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2005-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2005-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u16-u16-vasnprintf.c 
b/lib/unistdio/u16-u16-vasnprintf.c
index bfd70fac69..6fc5dad147 100644
--- a/lib/unistdio/u16-u16-vasnprintf.c
+++ b/lib/unistdio/u16-u16-vasnprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to UTF-16 strings.
-   Copyright (C) 1999, 2002, 2006-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2006-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u16-u16-vasprintf.c b/lib/unistdio/u16-u16-vasprintf.c
index 5b0b164676..3310ead32d 100644
--- a/lib/unistdio/u16-u16-vasprintf.c
+++ b/lib/unistdio/u16-u16-vasprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2006-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2006-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u16-u16-vsnprintf.c b/lib/unistdio/u16-u16-vsnprintf.c
index d4af493d81..e7d5310a0d 100644
--- a/lib/unistdio/u16-u16-vsnprintf.c
+++ b/lib/unistdio/u16-u16-vsnprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2006-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2006-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u16-u16-vsprintf.c b/lib/unistdio/u16-u16-vsprintf.c
index 3fd389c1b2..ea09a472ea 100644
--- a/lib/unistdio/u16-u16-vsprintf.c
+++ b/lib/unistdio/u16-u16-vsprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2006-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2006-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u16-vasnprintf.c b/lib/unistdio/u16-vasnprintf.c
index 9e08c6abe6..bbcd97ae2f 100644
--- a/lib/unistdio/u16-vasnprintf.c
+++ b/lib/unistdio/u16-vasnprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to UTF-16 strings.
-   Copyright (C) 1999, 2002, 2006-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2006-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u16-vasprintf.c b/lib/unistdio/u16-vasprintf.c
index 05354afbf9..8ed3ef9aa0 100644
--- a/lib/unistdio/u16-vasprintf.c
+++ b/lib/unistdio/u16-vasprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2006-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2006-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u16-vsnprintf.c b/lib/unistdio/u16-vsnprintf.c
index cb0a0022ab..e6b033065d 100644
--- a/lib/unistdio/u16-vsnprintf.c
+++ b/lib/unistdio/u16-vsnprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2006-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2006-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u16-vsprintf.c b/lib/unistdio/u16-vsprintf.c
index e0f4a48efd..d2c0ce66cc 100644
--- a/lib/unistdio/u16-vsprintf.c
+++ b/lib/unistdio/u16-vsprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2006-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2006-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u32-asnprintf.c b/lib/unistdio/u32-asnprintf.c
index 0498cefeb1..39cec070a2 100644
--- a/lib/unistdio/u32-asnprintf.c
+++ b/lib/unistdio/u32-asnprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2005-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2005-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u32-asprintf.c b/lib/unistdio/u32-asprintf.c
index 519f95c118..c0576af445 100644
--- a/lib/unistdio/u32-asprintf.c
+++ b/lib/unistdio/u32-asprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2005-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2005-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u32-printf-parse.c b/lib/unistdio/u32-printf-parse.c
index aeccc000ef..be36480948 100644
--- a/lib/unistdio/u32-printf-parse.c
+++ b/lib/unistdio/u32-printf-parse.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999-2000, 2002, 2006-2007, 2009-2022 Free Software
+   Copyright (C) 1999-2000, 2002, 2006-2007, 2009-2023 Free Software
    Foundation, Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u32-snprintf.c b/lib/unistdio/u32-snprintf.c
index fa22384c94..a656324e78 100644
--- a/lib/unistdio/u32-snprintf.c
+++ b/lib/unistdio/u32-snprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2005-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2005-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u32-sprintf.c b/lib/unistdio/u32-sprintf.c
index e36df8b2e6..91d4d60044 100644
--- a/lib/unistdio/u32-sprintf.c
+++ b/lib/unistdio/u32-sprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2005-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2005-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u32-u32-asnprintf.c b/lib/unistdio/u32-u32-asnprintf.c
index 4bfff5a1bd..ff0a6740cc 100644
--- a/lib/unistdio/u32-u32-asnprintf.c
+++ b/lib/unistdio/u32-u32-asnprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2005-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2005-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u32-u32-asprintf.c b/lib/unistdio/u32-u32-asprintf.c
index 5633bb07e1..539019f5d8 100644
--- a/lib/unistdio/u32-u32-asprintf.c
+++ b/lib/unistdio/u32-u32-asprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2005-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2005-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u32-u32-snprintf.c b/lib/unistdio/u32-u32-snprintf.c
index 10182dd3d8..249955b5fa 100644
--- a/lib/unistdio/u32-u32-snprintf.c
+++ b/lib/unistdio/u32-u32-snprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2005-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2005-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u32-u32-sprintf.c b/lib/unistdio/u32-u32-sprintf.c
index 7357fc693d..87bfb4f818 100644
--- a/lib/unistdio/u32-u32-sprintf.c
+++ b/lib/unistdio/u32-u32-sprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2005-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2005-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u32-u32-vasnprintf.c 
b/lib/unistdio/u32-u32-vasnprintf.c
index 6e7ea901be..41d82121a3 100644
--- a/lib/unistdio/u32-u32-vasnprintf.c
+++ b/lib/unistdio/u32-u32-vasnprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to UTF-32 strings.
-   Copyright (C) 1999, 2002, 2006-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2006-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u32-u32-vasprintf.c b/lib/unistdio/u32-u32-vasprintf.c
index c62d51bec5..5e6874e676 100644
--- a/lib/unistdio/u32-u32-vasprintf.c
+++ b/lib/unistdio/u32-u32-vasprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2006-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2006-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u32-u32-vsnprintf.c b/lib/unistdio/u32-u32-vsnprintf.c
index 7ba651ca6d..2a35712655 100644
--- a/lib/unistdio/u32-u32-vsnprintf.c
+++ b/lib/unistdio/u32-u32-vsnprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2006-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2006-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u32-u32-vsprintf.c b/lib/unistdio/u32-u32-vsprintf.c
index d151323f88..b13b75fd3e 100644
--- a/lib/unistdio/u32-u32-vsprintf.c
+++ b/lib/unistdio/u32-u32-vsprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2006-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2006-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u32-vasnprintf.c b/lib/unistdio/u32-vasnprintf.c
index 1459484495..d4db37c5d6 100644
--- a/lib/unistdio/u32-vasnprintf.c
+++ b/lib/unistdio/u32-vasnprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to UTF-32 strings.
-   Copyright (C) 1999, 2002, 2006-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2006-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u32-vasprintf.c b/lib/unistdio/u32-vasprintf.c
index 8b9791c7d0..4e660a7ac6 100644
--- a/lib/unistdio/u32-vasprintf.c
+++ b/lib/unistdio/u32-vasprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2006-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2006-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u32-vsnprintf.c b/lib/unistdio/u32-vsnprintf.c
index 1ec73140a4..6ed5f3e514 100644
--- a/lib/unistdio/u32-vsnprintf.c
+++ b/lib/unistdio/u32-vsnprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2006-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2006-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u32-vsprintf.c b/lib/unistdio/u32-vsprintf.c
index 9e8e360ecc..fce485db5d 100644
--- a/lib/unistdio/u32-vsprintf.c
+++ b/lib/unistdio/u32-vsprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2006-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2006-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u8-asnprintf.c b/lib/unistdio/u8-asnprintf.c
index bf7182bd06..f96a5789ac 100644
--- a/lib/unistdio/u8-asnprintf.c
+++ b/lib/unistdio/u8-asnprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2005-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2005-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u8-asprintf.c b/lib/unistdio/u8-asprintf.c
index 1694c5d0ec..2f59487da0 100644
--- a/lib/unistdio/u8-asprintf.c
+++ b/lib/unistdio/u8-asprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2005-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2005-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u8-printf-parse.c b/lib/unistdio/u8-printf-parse.c
index d7584bd486..b672b2eadf 100644
--- a/lib/unistdio/u8-printf-parse.c
+++ b/lib/unistdio/u8-printf-parse.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999-2000, 2002, 2006-2007, 2009-2022 Free Software
+   Copyright (C) 1999-2000, 2002, 2006-2007, 2009-2023 Free Software
    Foundation, Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u8-snprintf.c b/lib/unistdio/u8-snprintf.c
index 1c83a16910..885919efe8 100644
--- a/lib/unistdio/u8-snprintf.c
+++ b/lib/unistdio/u8-snprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2005-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2005-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u8-sprintf.c b/lib/unistdio/u8-sprintf.c
index 767f5971f0..13b91af0fe 100644
--- a/lib/unistdio/u8-sprintf.c
+++ b/lib/unistdio/u8-sprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2005-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2005-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u8-u8-asnprintf.c b/lib/unistdio/u8-u8-asnprintf.c
index dd906f77bf..f855bfabdf 100644
--- a/lib/unistdio/u8-u8-asnprintf.c
+++ b/lib/unistdio/u8-u8-asnprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2005-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2005-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u8-u8-asprintf.c b/lib/unistdio/u8-u8-asprintf.c
index d3cf7af525..28ff7f634b 100644
--- a/lib/unistdio/u8-u8-asprintf.c
+++ b/lib/unistdio/u8-u8-asprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2005-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2005-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u8-u8-snprintf.c b/lib/unistdio/u8-u8-snprintf.c
index b8c61d7f6c..58e5d75730 100644
--- a/lib/unistdio/u8-u8-snprintf.c
+++ b/lib/unistdio/u8-u8-snprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2005-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2005-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u8-u8-sprintf.c b/lib/unistdio/u8-u8-sprintf.c
index 1de12b1d5a..c7a678842b 100644
--- a/lib/unistdio/u8-u8-sprintf.c
+++ b/lib/unistdio/u8-u8-sprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2005-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2005-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u8-u8-vasnprintf.c b/lib/unistdio/u8-u8-vasnprintf.c
index 0fc6b7c5e8..eefb2a2402 100644
--- a/lib/unistdio/u8-u8-vasnprintf.c
+++ b/lib/unistdio/u8-u8-vasnprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to UTF-8 strings.
-   Copyright (C) 1999, 2002, 2006-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2006-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u8-u8-vasprintf.c b/lib/unistdio/u8-u8-vasprintf.c
index 5487926bd7..3f99806064 100644
--- a/lib/unistdio/u8-u8-vasprintf.c
+++ b/lib/unistdio/u8-u8-vasprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2006-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2006-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u8-u8-vsnprintf.c b/lib/unistdio/u8-u8-vsnprintf.c
index 904a782eb2..b1fc23b404 100644
--- a/lib/unistdio/u8-u8-vsnprintf.c
+++ b/lib/unistdio/u8-u8-vsnprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2006-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2006-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u8-u8-vsprintf.c b/lib/unistdio/u8-u8-vsprintf.c
index 0a95daa1ac..6c58064339 100644
--- a/lib/unistdio/u8-u8-vsprintf.c
+++ b/lib/unistdio/u8-u8-vsprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2006-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2006-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u8-vasnprintf.c b/lib/unistdio/u8-vasnprintf.c
index ce45871372..c4cc637221 100644
--- a/lib/unistdio/u8-vasnprintf.c
+++ b/lib/unistdio/u8-vasnprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to UTF-8 strings.
-   Copyright (C) 1999, 2002, 2006-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2006-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u8-vasprintf.c b/lib/unistdio/u8-vasprintf.c
index 4c4f4d7e37..9eb7fe8838 100644
--- a/lib/unistdio/u8-vasprintf.c
+++ b/lib/unistdio/u8-vasprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2006-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2006-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u8-vsnprintf.c b/lib/unistdio/u8-vsnprintf.c
index a32889c4e2..f2ea5dc68b 100644
--- a/lib/unistdio/u8-vsnprintf.c
+++ b/lib/unistdio/u8-vsnprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2006-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2006-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/u8-vsprintf.c b/lib/unistdio/u8-vsprintf.c
index 14e6c2683e..eef500a56d 100644
--- a/lib/unistdio/u8-vsprintf.c
+++ b/lib/unistdio/u8-vsprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2006-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2006-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/ulc-asnprintf.c b/lib/unistdio/ulc-asnprintf.c
index b652170842..59770855b1 100644
--- a/lib/unistdio/ulc-asnprintf.c
+++ b/lib/unistdio/ulc-asnprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2005-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2005-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/ulc-asprintf.c b/lib/unistdio/ulc-asprintf.c
index fbceb2af2a..8219603cb6 100644
--- a/lib/unistdio/ulc-asprintf.c
+++ b/lib/unistdio/ulc-asprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2006-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2006-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/ulc-fprintf.c b/lib/unistdio/ulc-fprintf.c
index 71a299a4f9..c42a81f247 100644
--- a/lib/unistdio/ulc-fprintf.c
+++ b/lib/unistdio/ulc-fprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to a stream.
-   Copyright (C) 2004, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2004, 2006-2023 Free Software Foundation, Inc.
 
    This file is free software.
    It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
diff --git a/lib/unistdio/ulc-printf-parse.c b/lib/unistdio/ulc-printf-parse.c
index 839104201b..c046492373 100644
--- a/lib/unistdio/ulc-printf-parse.c
+++ b/lib/unistdio/ulc-printf-parse.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999-2000, 2002, 2006-2007, 2009-2022 Free Software
+   Copyright (C) 1999-2000, 2002, 2006-2007, 2009-2023 Free Software
    Foundation, Inc.
 
    This file is free software.
diff --git a/lib/unistdio/ulc-snprintf.c b/lib/unistdio/ulc-snprintf.c
index b53100e882..6e4dfd3810 100644
--- a/lib/unistdio/ulc-snprintf.c
+++ b/lib/unistdio/ulc-snprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2005-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2005-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/ulc-sprintf.c b/lib/unistdio/ulc-sprintf.c
index 2c0e3bca08..0da3e185c8 100644
--- a/lib/unistdio/ulc-sprintf.c
+++ b/lib/unistdio/ulc-sprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2005-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2005-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/ulc-vasnprintf.c b/lib/unistdio/ulc-vasnprintf.c
index 2ce2a7dfda..19f412c7b5 100644
--- a/lib/unistdio/ulc-vasnprintf.c
+++ b/lib/unistdio/ulc-vasnprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2006-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2006-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/ulc-vasprintf.c b/lib/unistdio/ulc-vasprintf.c
index 9e1ae14b2f..854783ec39 100644
--- a/lib/unistdio/ulc-vasprintf.c
+++ b/lib/unistdio/ulc-vasprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2006-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2006-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/ulc-vfprintf.c b/lib/unistdio/ulc-vfprintf.c
index ffb2638aab..bd3a4a482c 100644
--- a/lib/unistdio/ulc-vfprintf.c
+++ b/lib/unistdio/ulc-vfprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to a stream.
-   Copyright (C) 2004, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2004, 2006-2023 Free Software Foundation, Inc.
 
    This file is free software.
    It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
diff --git a/lib/unistdio/ulc-vsnprintf.c b/lib/unistdio/ulc-vsnprintf.c
index 07e0a276d0..41c8ff7b7b 100644
--- a/lib/unistdio/ulc-vsnprintf.c
+++ b/lib/unistdio/ulc-vsnprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2006-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2006-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistdio/ulc-vsprintf.c b/lib/unistdio/ulc-vsprintf.c
index 3d0b3d15b7..94b669d6a5 100644
--- a/lib/unistdio/ulc-vsprintf.c
+++ b/lib/unistdio/ulc-vsprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2006-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2006-2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software.
diff --git a/lib/unistr.in.h b/lib/unistr.in.h
index 4d48751558..d85ad51717 100644
--- a/lib/unistr.in.h
+++ b/lib/unistr.in.h
@@ -1,5 +1,5 @@
 /* Elementary Unicode string functions.
-   Copyright (C) 2001-2002, 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2002, 2005-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/unistr/u-cmp2.h b/lib/unistr/u-cmp2.h
index 1b4ca97fdb..afc9616407 100644
--- a/lib/unistr/u-cmp2.h
+++ b/lib/unistr/u-cmp2.h
@@ -1,5 +1,5 @@
 /* Compare pieces of UTF-8/UTF-16/UTF-32 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unistr/u-cpy-alloc.h b/lib/unistr/u-cpy-alloc.h
index 0f60d1e5a4..02c2d92cdc 100644
--- a/lib/unistr/u-cpy-alloc.h
+++ b/lib/unistr/u-cpy-alloc.h
@@ -1,5 +1,5 @@
 /* Copy piece of UTF-8/UTF-16/UTF-32 string.
-   Copyright (C) 1999, 2002, 2006-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2006-2007, 2009-2023 Free Software Foundation,
    Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
diff --git a/lib/unistr/u-cpy.h b/lib/unistr/u-cpy.h
index f0b3bc8565..8ee3c83370 100644
--- a/lib/unistr/u-cpy.h
+++ b/lib/unistr/u-cpy.h
@@ -1,5 +1,5 @@
 /* Copy piece of UTF-8/UTF-16/UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/unistr/u-endswith.h b/lib/unistr/u-endswith.h
index d69204b70d..a0f13172e9 100644
--- a/lib/unistr/u-endswith.h
+++ b/lib/unistr/u-endswith.h
@@ -1,5 +1,5 @@
 /* Substring test for UTF-8/UTF-16/UTF-32 strings.
-   Copyright (C) 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u-move.h b/lib/unistr/u-move.h
index 00ced07829..8f1ba77f17 100644
--- a/lib/unistr/u-move.h
+++ b/lib/unistr/u-move.h
@@ -1,5 +1,5 @@
 /* Copy piece of UTF-8/UTF-16/UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u-set.h b/lib/unistr/u-set.h
index 573da7e959..7e1e6b5413 100644
--- a/lib/unistr/u-set.h
+++ b/lib/unistr/u-set.h
@@ -1,5 +1,5 @@
 /* Fill UTF-8/UTF-16/UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u-startswith.h b/lib/unistr/u-startswith.h
index a6aded59f3..8394805cfa 100644
--- a/lib/unistr/u-startswith.h
+++ b/lib/unistr/u-startswith.h
@@ -1,5 +1,5 @@
 /* Substring test for UTF-8/UTF-16/UTF-32 strings.
-   Copyright (C) 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u-stpcpy.h b/lib/unistr/u-stpcpy.h
index 07008b0a28..b6f0134aec 100644
--- a/lib/unistr/u-stpcpy.h
+++ b/lib/unistr/u-stpcpy.h
@@ -1,5 +1,5 @@
 /* Copy UTF-8/UTF-16/UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u-stpncpy.h b/lib/unistr/u-stpncpy.h
index 9c4e5829ad..cbd787058c 100644
--- a/lib/unistr/u-stpncpy.h
+++ b/lib/unistr/u-stpncpy.h
@@ -1,5 +1,5 @@
 /* Copy UTF-8/UTF-16/UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u-strcat.h b/lib/unistr/u-strcat.h
index f742165b1a..608272220a 100644
--- a/lib/unistr/u-strcat.h
+++ b/lib/unistr/u-strcat.h
@@ -1,5 +1,5 @@
 /* Concatenate UTF-8/UTF-16/UTF-32 strings.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u-strcoll.h b/lib/unistr/u-strcoll.h
index ee08ab7522..1807ce9556 100644
--- a/lib/unistr/u-strcoll.h
+++ b/lib/unistr/u-strcoll.h
@@ -1,6 +1,6 @@
 /* Compare UTF-8/UTF-16/UTF-32 strings using the collation rules of the current
    locale.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unistr/u-strcpy.h b/lib/unistr/u-strcpy.h
index 04c1b9d2be..ea46127022 100644
--- a/lib/unistr/u-strcpy.h
+++ b/lib/unistr/u-strcpy.h
@@ -1,5 +1,5 @@
 /* Copy UTF-8/UTF-16/UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u-strcspn.h b/lib/unistr/u-strcspn.h
index eab30943a9..4edb2c219f 100644
--- a/lib/unistr/u-strcspn.h
+++ b/lib/unistr/u-strcspn.h
@@ -1,5 +1,5 @@
 /* Search for some characters in UTF-8/UTF-16/UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u-strdup.h b/lib/unistr/u-strdup.h
index 543a54482a..9b9bcc3a30 100644
--- a/lib/unistr/u-strdup.h
+++ b/lib/unistr/u-strdup.h
@@ -1,5 +1,5 @@
 /* Copy UTF-8/UTF-16/UTF-32 string.
-   Copyright (C) 1999, 2002, 2006-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2006-2007, 2009-2023 Free Software Foundation,
    Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
diff --git a/lib/unistr/u-strlen.h b/lib/unistr/u-strlen.h
index 70998fc4bc..0acc48f0c6 100644
--- a/lib/unistr/u-strlen.h
+++ b/lib/unistr/u-strlen.h
@@ -1,5 +1,5 @@
 /* Determine length of UTF-8/UTF-16/UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u-strncat.h b/lib/unistr/u-strncat.h
index 3e85b615b6..1d585b86c3 100644
--- a/lib/unistr/u-strncat.h
+++ b/lib/unistr/u-strncat.h
@@ -1,5 +1,5 @@
 /* Concatenate UTF-8/UTF-16/UTF-32 strings.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u-strncpy.h b/lib/unistr/u-strncpy.h
index 89b65dd1af..1154d7db07 100644
--- a/lib/unistr/u-strncpy.h
+++ b/lib/unistr/u-strncpy.h
@@ -1,5 +1,5 @@
 /* Copy UTF-8/UTF-16/UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u-strnlen.h b/lib/unistr/u-strnlen.h
index b7237ce9a6..d3506e6f10 100644
--- a/lib/unistr/u-strnlen.h
+++ b/lib/unistr/u-strnlen.h
@@ -1,5 +1,5 @@
 /* Determine bounded length of UTF-8/UTF-16/UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u-strpbrk.h b/lib/unistr/u-strpbrk.h
index 847bd6f939..07f7da0d22 100644
--- a/lib/unistr/u-strpbrk.h
+++ b/lib/unistr/u-strpbrk.h
@@ -1,5 +1,5 @@
 /* Search for some characters in UTF-8/UTF-16/UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u-strspn.h b/lib/unistr/u-strspn.h
index 13b5df8443..eb34b57df3 100644
--- a/lib/unistr/u-strspn.h
+++ b/lib/unistr/u-strspn.h
@@ -1,5 +1,5 @@
 /* Search for some characters in UTF-8/UTF-16/UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u-strstr.h b/lib/unistr/u-strstr.h
index 98dda4beec..c0a1435587 100644
--- a/lib/unistr/u-strstr.h
+++ b/lib/unistr/u-strstr.h
@@ -1,5 +1,5 @@
 /* Substring test for UTF-8/UTF-16/UTF-32 strings.  -*- coding: utf-8 -*-
-   Copyright (C) 1999, 2002, 2006, 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2010-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002, 2005.
 
    This file is free software.
diff --git a/lib/unistr/u-strtok.h b/lib/unistr/u-strtok.h
index 088e80ba86..ba326e62ff 100644
--- a/lib/unistr/u-strtok.h
+++ b/lib/unistr/u-strtok.h
@@ -1,5 +1,5 @@
 /* Tokenize UTF-8/UTF-16/UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u16-check.c b/lib/unistr/u16-check.c
index f97327d65c..96a5bf8b0c 100644
--- a/lib/unistr/u16-check.c
+++ b/lib/unistr/u16-check.c
@@ -1,5 +1,5 @@
 /* Check UTF-16 string.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u16-chr.c b/lib/unistr/u16-chr.c
index 97927c2ff6..51f0aab2a8 100644
--- a/lib/unistr/u16-chr.c
+++ b/lib/unistr/u16-chr.c
@@ -1,5 +1,5 @@
 /* Search character in piece of UTF-16 string.
-   Copyright (C) 1999, 2002, 2006-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2006-2007, 2009-2023 Free Software Foundation,
    Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
diff --git a/lib/unistr/u16-cmp.c b/lib/unistr/u16-cmp.c
index 67a6988998..a0f301cb0d 100644
--- a/lib/unistr/u16-cmp.c
+++ b/lib/unistr/u16-cmp.c
@@ -1,5 +1,5 @@
 /* Compare pieces of UTF-16 strings.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u16-cmp2.c b/lib/unistr/u16-cmp2.c
index f6d323eb43..92b39ab5bd 100644
--- a/lib/unistr/u16-cmp2.c
+++ b/lib/unistr/u16-cmp2.c
@@ -1,5 +1,5 @@
 /* Compare pieces of UTF-16 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unistr/u16-cpy-alloc.c b/lib/unistr/u16-cpy-alloc.c
index 2da1e64d93..a68495fdab 100644
--- a/lib/unistr/u16-cpy-alloc.c
+++ b/lib/unistr/u16-cpy-alloc.c
@@ -1,5 +1,5 @@
 /* Copy piece of UTF-16 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u16-cpy.c b/lib/unistr/u16-cpy.c
index 0f0b7d547b..9badaea89f 100644
--- a/lib/unistr/u16-cpy.c
+++ b/lib/unistr/u16-cpy.c
@@ -1,5 +1,5 @@
 /* Copy piece of UTF-16 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u16-endswith.c b/lib/unistr/u16-endswith.c
index 0dddd2dfc8..a2eab3696e 100644
--- a/lib/unistr/u16-endswith.c
+++ b/lib/unistr/u16-endswith.c
@@ -1,5 +1,5 @@
 /* Substring test for UTF-16 strings.
-   Copyright (C) 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u16-mblen.c b/lib/unistr/u16-mblen.c
index 2083ee7b39..03eb58ee50 100644
--- a/lib/unistr/u16-mblen.c
+++ b/lib/unistr/u16-mblen.c
@@ -1,5 +1,5 @@
 /* Look at first character in UTF-16 string.
-   Copyright (C) 1999-2000, 2002, 2006-2007, 2009-2022 Free Software
+   Copyright (C) 1999-2000, 2002, 2006-2007, 2009-2023 Free Software
    Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
diff --git a/lib/unistr/u16-mbsnlen.c b/lib/unistr/u16-mbsnlen.c
index 05b3330dc4..8814f3b437 100644
--- a/lib/unistr/u16-mbsnlen.c
+++ b/lib/unistr/u16-mbsnlen.c
@@ -1,5 +1,5 @@
 /* Count characters in UTF-16 string.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2007.
 
    This file is free software.
diff --git a/lib/unistr/u16-mbtouc-aux.c b/lib/unistr/u16-mbtouc-aux.c
index 99a54aab40..8af7cdf7f3 100644
--- a/lib/unistr/u16-mbtouc-aux.c
+++ b/lib/unistr/u16-mbtouc-aux.c
@@ -1,5 +1,5 @@
 /* Conversion UTF-16 to UCS-4.
-   Copyright (C) 2001-2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2001.
 
    This file is free software.
diff --git a/lib/unistr/u16-mbtouc-unsafe-aux.c 
b/lib/unistr/u16-mbtouc-unsafe-aux.c
index 7199854aea..a299ce1baa 100644
--- a/lib/unistr/u16-mbtouc-unsafe-aux.c
+++ b/lib/unistr/u16-mbtouc-unsafe-aux.c
@@ -1,5 +1,5 @@
 /* Conversion UTF-16 to UCS-4.
-   Copyright (C) 2001-2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2001.
 
    This file is free software.
diff --git a/lib/unistr/u16-mbtouc-unsafe.c b/lib/unistr/u16-mbtouc-unsafe.c
index bacacc7d71..80daeec0e7 100644
--- a/lib/unistr/u16-mbtouc-unsafe.c
+++ b/lib/unistr/u16-mbtouc-unsafe.c
@@ -1,5 +1,5 @@
 /* Look at first character in UTF-16 string.
-   Copyright (C) 1999-2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999-2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2001.
 
    This file is free software.
diff --git a/lib/unistr/u16-mbtouc.c b/lib/unistr/u16-mbtouc.c
index 20cae8ee8f..6c553cce26 100644
--- a/lib/unistr/u16-mbtouc.c
+++ b/lib/unistr/u16-mbtouc.c
@@ -1,5 +1,5 @@
 /* Look at first character in UTF-16 string.
-   Copyright (C) 1999-2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999-2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2001.
 
    This file is free software.
diff --git a/lib/unistr/u16-mbtoucr.c b/lib/unistr/u16-mbtoucr.c
index 7cb40c1b9f..11dc2ebb3b 100644
--- a/lib/unistr/u16-mbtoucr.c
+++ b/lib/unistr/u16-mbtoucr.c
@@ -1,5 +1,5 @@
 /* Look at first character in UTF-16 string, returning an error code.
-   Copyright (C) 1999-2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999-2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2001.
 
    This file is free software.
diff --git a/lib/unistr/u16-move.c b/lib/unistr/u16-move.c
index 9c8ac0085a..d231ea361d 100644
--- a/lib/unistr/u16-move.c
+++ b/lib/unistr/u16-move.c
@@ -1,5 +1,5 @@
 /* Copy piece of UTF-16 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u16-next.c b/lib/unistr/u16-next.c
index c5bc23ab2a..ca52dcf9a8 100644
--- a/lib/unistr/u16-next.c
+++ b/lib/unistr/u16-next.c
@@ -1,5 +1,5 @@
 /* Iterate over next character in UTF-16 string.
-   Copyright (C) 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u16-prev.c b/lib/unistr/u16-prev.c
index bf5259dadf..0e5c493380 100644
--- a/lib/unistr/u16-prev.c
+++ b/lib/unistr/u16-prev.c
@@ -1,5 +1,5 @@
 /* Iterate over previous character in UTF-16 string.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u16-set.c b/lib/unistr/u16-set.c
index 0f676bd70f..4c26742db6 100644
--- a/lib/unistr/u16-set.c
+++ b/lib/unistr/u16-set.c
@@ -1,5 +1,5 @@
 /* Fill UTF-16 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u16-startswith.c b/lib/unistr/u16-startswith.c
index 2c51c9fe99..23fd8247b4 100644
--- a/lib/unistr/u16-startswith.c
+++ b/lib/unistr/u16-startswith.c
@@ -1,5 +1,5 @@
 /* Substring test for UTF-16 strings.
-   Copyright (C) 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u16-stpcpy.c b/lib/unistr/u16-stpcpy.c
index 9844d501e0..75c4a9f2f8 100644
--- a/lib/unistr/u16-stpcpy.c
+++ b/lib/unistr/u16-stpcpy.c
@@ -1,5 +1,5 @@
 /* Copy UTF-16 string.
-   Copyright (C) 1999, 2002, 2006-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2006-2007, 2009-2023 Free Software Foundation,
    Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
diff --git a/lib/unistr/u16-stpncpy.c b/lib/unistr/u16-stpncpy.c
index da4d90b693..95aa2113a8 100644
--- a/lib/unistr/u16-stpncpy.c
+++ b/lib/unistr/u16-stpncpy.c
@@ -1,5 +1,5 @@
 /* Copy UTF-16 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u16-strcat.c b/lib/unistr/u16-strcat.c
index acc0b0088a..ff9f1756f6 100644
--- a/lib/unistr/u16-strcat.c
+++ b/lib/unistr/u16-strcat.c
@@ -1,5 +1,5 @@
 /* Concatenate UTF-16 strings.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u16-strchr.c b/lib/unistr/u16-strchr.c
index 99ba61cc96..538c73700d 100644
--- a/lib/unistr/u16-strchr.c
+++ b/lib/unistr/u16-strchr.c
@@ -1,5 +1,5 @@
 /* Search character in UTF-16 string.
-   Copyright (C) 1999, 2002, 2006-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2006-2007, 2009-2023 Free Software Foundation,
    Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
diff --git a/lib/unistr/u16-strcmp.c b/lib/unistr/u16-strcmp.c
index 4c7f3cc179..cf92357af5 100644
--- a/lib/unistr/u16-strcmp.c
+++ b/lib/unistr/u16-strcmp.c
@@ -1,5 +1,5 @@
 /* Compare UTF-16 strings.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u16-strcoll.c b/lib/unistr/u16-strcoll.c
index fd0a316262..ace2e59dcc 100644
--- a/lib/unistr/u16-strcoll.c
+++ b/lib/unistr/u16-strcoll.c
@@ -1,5 +1,5 @@
 /* Compare UTF-16 strings using the collation rules of the current locale.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unistr/u16-strcpy.c b/lib/unistr/u16-strcpy.c
index 714e8a6ffd..bcc079bf42 100644
--- a/lib/unistr/u16-strcpy.c
+++ b/lib/unistr/u16-strcpy.c
@@ -1,5 +1,5 @@
 /* Copy UTF-16 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u16-strcspn.c b/lib/unistr/u16-strcspn.c
index 686fb89fcb..88e206929b 100644
--- a/lib/unistr/u16-strcspn.c
+++ b/lib/unistr/u16-strcspn.c
@@ -1,5 +1,5 @@
 /* Search for some characters in UTF-16 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u16-strdup.c b/lib/unistr/u16-strdup.c
index cf6f53bd38..e44e52f69c 100644
--- a/lib/unistr/u16-strdup.c
+++ b/lib/unistr/u16-strdup.c
@@ -1,5 +1,5 @@
 /* Copy UTF-16 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u16-strlen.c b/lib/unistr/u16-strlen.c
index 95e805cc2f..c1a27429e5 100644
--- a/lib/unistr/u16-strlen.c
+++ b/lib/unistr/u16-strlen.c
@@ -1,5 +1,5 @@
 /* Determine length of UTF-16 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u16-strmblen.c b/lib/unistr/u16-strmblen.c
index d30f66984d..5dffcf4b6f 100644
--- a/lib/unistr/u16-strmblen.c
+++ b/lib/unistr/u16-strmblen.c
@@ -1,5 +1,5 @@
 /* Look at first character in UTF-16 string.
-   Copyright (C) 1999-2000, 2002, 2006-2007, 2009-2022 Free Software
+   Copyright (C) 1999-2000, 2002, 2006-2007, 2009-2023 Free Software
    Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
diff --git a/lib/unistr/u16-strmbtouc.c b/lib/unistr/u16-strmbtouc.c
index 188539572d..fdd5dc1097 100644
--- a/lib/unistr/u16-strmbtouc.c
+++ b/lib/unistr/u16-strmbtouc.c
@@ -1,5 +1,5 @@
 /* Look at first character in UTF-16 string.
-   Copyright (C) 1999-2000, 2002, 2006-2007, 2009-2022 Free Software
+   Copyright (C) 1999-2000, 2002, 2006-2007, 2009-2023 Free Software
    Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
diff --git a/lib/unistr/u16-strncat.c b/lib/unistr/u16-strncat.c
index f2a1a2dcdd..6dcba7658d 100644
--- a/lib/unistr/u16-strncat.c
+++ b/lib/unistr/u16-strncat.c
@@ -1,5 +1,5 @@
 /* Concatenate UTF-16 strings.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u16-strncmp.c b/lib/unistr/u16-strncmp.c
index aad7d68cc4..f2ec6d9454 100644
--- a/lib/unistr/u16-strncmp.c
+++ b/lib/unistr/u16-strncmp.c
@@ -1,5 +1,5 @@
 /* Compare UTF-16 strings.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u16-strncpy.c b/lib/unistr/u16-strncpy.c
index daa401957c..f911dfdfb9 100644
--- a/lib/unistr/u16-strncpy.c
+++ b/lib/unistr/u16-strncpy.c
@@ -1,5 +1,5 @@
 /* Copy UTF-16 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u16-strnlen.c b/lib/unistr/u16-strnlen.c
index f07a7b57dc..9d89f5e3a3 100644
--- a/lib/unistr/u16-strnlen.c
+++ b/lib/unistr/u16-strnlen.c
@@ -1,5 +1,5 @@
 /* Determine bounded length of UTF-16 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u16-strpbrk.c b/lib/unistr/u16-strpbrk.c
index 8e262fccfd..e268c8634c 100644
--- a/lib/unistr/u16-strpbrk.c
+++ b/lib/unistr/u16-strpbrk.c
@@ -1,5 +1,5 @@
 /* Search for some characters in UTF-16 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u16-strrchr.c b/lib/unistr/u16-strrchr.c
index 3cb31b859c..35b47292f7 100644
--- a/lib/unistr/u16-strrchr.c
+++ b/lib/unistr/u16-strrchr.c
@@ -1,5 +1,5 @@
 /* Search character in UTF-16 string.
-   Copyright (C) 1999, 2002, 2006-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2006-2007, 2009-2023 Free Software Foundation,
    Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
diff --git a/lib/unistr/u16-strspn.c b/lib/unistr/u16-strspn.c
index 3642359335..2553a8f12e 100644
--- a/lib/unistr/u16-strspn.c
+++ b/lib/unistr/u16-strspn.c
@@ -1,5 +1,5 @@
 /* Search for some characters in UTF-16 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u16-strstr.c b/lib/unistr/u16-strstr.c
index 7ca7625def..5a21a1f63d 100644
--- a/lib/unistr/u16-strstr.c
+++ b/lib/unistr/u16-strstr.c
@@ -1,5 +1,5 @@
 /* Substring test for UTF-16 strings.
-   Copyright (C) 1999, 2002, 2006, 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2010-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u16-strtok.c b/lib/unistr/u16-strtok.c
index dbe6ffb84b..c43ba34b1a 100644
--- a/lib/unistr/u16-strtok.c
+++ b/lib/unistr/u16-strtok.c
@@ -1,5 +1,5 @@
 /* Tokenize UTF-16 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u16-to-u32.c b/lib/unistr/u16-to-u32.c
index 8a070fdce8..00e506d780 100644
--- a/lib/unistr/u16-to-u32.c
+++ b/lib/unistr/u16-to-u32.c
@@ -1,5 +1,5 @@
 /* Convert UTF-16 string to UTF-32 string.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u16-to-u8.c b/lib/unistr/u16-to-u8.c
index f64f9fb3b6..00f17f0e91 100644
--- a/lib/unistr/u16-to-u8.c
+++ b/lib/unistr/u16-to-u8.c
@@ -1,5 +1,5 @@
 /* Convert UTF-16 string to UTF-8 string.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u16-uctomb-aux.c b/lib/unistr/u16-uctomb-aux.c
index 337d34dfab..7908eb5465 100644
--- a/lib/unistr/u16-uctomb-aux.c
+++ b/lib/unistr/u16-uctomb-aux.c
@@ -1,5 +1,5 @@
 /* Conversion UCS-4 to UTF-16.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u16-uctomb.c b/lib/unistr/u16-uctomb.c
index 56947f48c6..1a3df76d99 100644
--- a/lib/unistr/u16-uctomb.c
+++ b/lib/unistr/u16-uctomb.c
@@ -1,5 +1,5 @@
 /* Store a character in UTF-16 string.
-   Copyright (C) 2002, 2005-2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2005-2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u32-check.c b/lib/unistr/u32-check.c
index 2547812be2..cfd9564261 100644
--- a/lib/unistr/u32-check.c
+++ b/lib/unistr/u32-check.c
@@ -1,5 +1,5 @@
 /* Check UTF-32 string.
-   Copyright (C) 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u32-chr.c b/lib/unistr/u32-chr.c
index f23b58a108..46dc95320f 100644
--- a/lib/unistr/u32-chr.c
+++ b/lib/unistr/u32-chr.c
@@ -1,5 +1,5 @@
 /* Search character in piece of UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u32-cmp.c b/lib/unistr/u32-cmp.c
index af875b48da..d972511160 100644
--- a/lib/unistr/u32-cmp.c
+++ b/lib/unistr/u32-cmp.c
@@ -1,5 +1,5 @@
 /* Compare pieces of UTF-32 strings.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u32-cmp2.c b/lib/unistr/u32-cmp2.c
index d3d7060fe9..0844f1e833 100644
--- a/lib/unistr/u32-cmp2.c
+++ b/lib/unistr/u32-cmp2.c
@@ -1,5 +1,5 @@
 /* Compare pieces of UTF-32 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unistr/u32-cpy-alloc.c b/lib/unistr/u32-cpy-alloc.c
index 3c7490de03..e09e6fd00d 100644
--- a/lib/unistr/u32-cpy-alloc.c
+++ b/lib/unistr/u32-cpy-alloc.c
@@ -1,5 +1,5 @@
 /* Copy piece of UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u32-cpy.c b/lib/unistr/u32-cpy.c
index a2664e2ecc..a75530aa5b 100644
--- a/lib/unistr/u32-cpy.c
+++ b/lib/unistr/u32-cpy.c
@@ -1,5 +1,5 @@
 /* Copy piece of UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/unistr/u32-endswith.c b/lib/unistr/u32-endswith.c
index 4942f20064..5b2faff5a9 100644
--- a/lib/unistr/u32-endswith.c
+++ b/lib/unistr/u32-endswith.c
@@ -1,5 +1,5 @@
 /* Substring test for UTF-32 strings.
-   Copyright (C) 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u32-mblen.c b/lib/unistr/u32-mblen.c
index e3f9a2a1df..579395fb42 100644
--- a/lib/unistr/u32-mblen.c
+++ b/lib/unistr/u32-mblen.c
@@ -1,5 +1,5 @@
 /* Look at first character in UTF-32 string.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u32-mbsnlen.c b/lib/unistr/u32-mbsnlen.c
index 80c9ba7108..9932da9e14 100644
--- a/lib/unistr/u32-mbsnlen.c
+++ b/lib/unistr/u32-mbsnlen.c
@@ -1,5 +1,5 @@
 /* Count characters in UTF-32 string.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2007.
 
    This file is free software.
diff --git a/lib/unistr/u32-mbtouc-unsafe.c b/lib/unistr/u32-mbtouc-unsafe.c
index 38904ea191..cf136f67f4 100644
--- a/lib/unistr/u32-mbtouc-unsafe.c
+++ b/lib/unistr/u32-mbtouc-unsafe.c
@@ -1,5 +1,5 @@
 /* Look at first character in UTF-32 string.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/unistr/u32-mbtouc.c b/lib/unistr/u32-mbtouc.c
index 70ff857b17..ea9914fe1e 100644
--- a/lib/unistr/u32-mbtouc.c
+++ b/lib/unistr/u32-mbtouc.c
@@ -1,5 +1,5 @@
 /* Look at first character in UTF-32 string.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u32-mbtoucr.c b/lib/unistr/u32-mbtoucr.c
index 245f639b7d..3d38519eb6 100644
--- a/lib/unistr/u32-mbtoucr.c
+++ b/lib/unistr/u32-mbtoucr.c
@@ -1,5 +1,5 @@
 /* Look at first character in UTF-32 string, returning an error code.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u32-move.c b/lib/unistr/u32-move.c
index a5fdd255e5..1f82cab6ac 100644
--- a/lib/unistr/u32-move.c
+++ b/lib/unistr/u32-move.c
@@ -1,5 +1,5 @@
 /* Copy piece of UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u32-next.c b/lib/unistr/u32-next.c
index 348fd98742..b31a778e7c 100644
--- a/lib/unistr/u32-next.c
+++ b/lib/unistr/u32-next.c
@@ -1,5 +1,5 @@
 /* Iterate over next character in UTF-32 string.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u32-prev.c b/lib/unistr/u32-prev.c
index 0289bafe11..cf5edd4b75 100644
--- a/lib/unistr/u32-prev.c
+++ b/lib/unistr/u32-prev.c
@@ -1,5 +1,5 @@
 /* Iterate over previous character in UTF-32 string.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u32-set.c b/lib/unistr/u32-set.c
index 60f2eaf034..5507efd197 100644
--- a/lib/unistr/u32-set.c
+++ b/lib/unistr/u32-set.c
@@ -1,5 +1,5 @@
 /* Fill UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u32-startswith.c b/lib/unistr/u32-startswith.c
index 9d5c53dcbd..4c6a43fdf6 100644
--- a/lib/unistr/u32-startswith.c
+++ b/lib/unistr/u32-startswith.c
@@ -1,5 +1,5 @@
 /* Substring test for UTF-32 strings.
-   Copyright (C) 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u32-stpcpy.c b/lib/unistr/u32-stpcpy.c
index d95c85515d..13b380e8d4 100644
--- a/lib/unistr/u32-stpcpy.c
+++ b/lib/unistr/u32-stpcpy.c
@@ -1,5 +1,5 @@
 /* Copy UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u32-stpncpy.c b/lib/unistr/u32-stpncpy.c
index 1281b64913..085d0dd68e 100644
--- a/lib/unistr/u32-stpncpy.c
+++ b/lib/unistr/u32-stpncpy.c
@@ -1,5 +1,5 @@
 /* Copy UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u32-strcat.c b/lib/unistr/u32-strcat.c
index d345487f51..ca99327696 100644
--- a/lib/unistr/u32-strcat.c
+++ b/lib/unistr/u32-strcat.c
@@ -1,5 +1,5 @@
 /* Concatenate UTF-32 strings.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u32-strchr.c b/lib/unistr/u32-strchr.c
index 48d9057d8a..e69b649df0 100644
--- a/lib/unistr/u32-strchr.c
+++ b/lib/unistr/u32-strchr.c
@@ -1,5 +1,5 @@
 /* Search character in UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u32-strcmp.c b/lib/unistr/u32-strcmp.c
index 6dc801d10c..d40ecc0ae6 100644
--- a/lib/unistr/u32-strcmp.c
+++ b/lib/unistr/u32-strcmp.c
@@ -1,5 +1,5 @@
 /* Compare UTF-32 strings.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u32-strcoll.c b/lib/unistr/u32-strcoll.c
index 688b8081c6..6a196aa2ab 100644
--- a/lib/unistr/u32-strcoll.c
+++ b/lib/unistr/u32-strcoll.c
@@ -1,5 +1,5 @@
 /* Compare UTF-32 strings using the collation rules of the current locale.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unistr/u32-strcpy.c b/lib/unistr/u32-strcpy.c
index b9520741c5..d776ae9f94 100644
--- a/lib/unistr/u32-strcpy.c
+++ b/lib/unistr/u32-strcpy.c
@@ -1,5 +1,5 @@
 /* Copy UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u32-strcspn.c b/lib/unistr/u32-strcspn.c
index 0e7fc00e40..9671e1ee00 100644
--- a/lib/unistr/u32-strcspn.c
+++ b/lib/unistr/u32-strcspn.c
@@ -1,5 +1,5 @@
 /* Search for some characters in UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u32-strdup.c b/lib/unistr/u32-strdup.c
index ce1fd6126d..f3281e2b90 100644
--- a/lib/unistr/u32-strdup.c
+++ b/lib/unistr/u32-strdup.c
@@ -1,5 +1,5 @@
 /* Copy UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u32-strlen.c b/lib/unistr/u32-strlen.c
index 5f618d8f9a..bf0ad7a217 100644
--- a/lib/unistr/u32-strlen.c
+++ b/lib/unistr/u32-strlen.c
@@ -1,5 +1,5 @@
 /* Determine length of UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u32-strmblen.c b/lib/unistr/u32-strmblen.c
index 75e19ee38d..7e2de61747 100644
--- a/lib/unistr/u32-strmblen.c
+++ b/lib/unistr/u32-strmblen.c
@@ -1,5 +1,5 @@
 /* Look at first character in UTF-32 string.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u32-strmbtouc.c b/lib/unistr/u32-strmbtouc.c
index 42ab71a1a2..4b19e1c0b6 100644
--- a/lib/unistr/u32-strmbtouc.c
+++ b/lib/unistr/u32-strmbtouc.c
@@ -1,5 +1,5 @@
 /* Look at first character in UTF-32 string.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u32-strncat.c b/lib/unistr/u32-strncat.c
index 3133084aa2..e0bc896ce7 100644
--- a/lib/unistr/u32-strncat.c
+++ b/lib/unistr/u32-strncat.c
@@ -1,5 +1,5 @@
 /* Concatenate UTF-32 strings.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u32-strncmp.c b/lib/unistr/u32-strncmp.c
index a99e11167f..0274e3353d 100644
--- a/lib/unistr/u32-strncmp.c
+++ b/lib/unistr/u32-strncmp.c
@@ -1,5 +1,5 @@
 /* Compare UTF-32 strings.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u32-strncpy.c b/lib/unistr/u32-strncpy.c
index 6f1b40c0e4..ac0f31a561 100644
--- a/lib/unistr/u32-strncpy.c
+++ b/lib/unistr/u32-strncpy.c
@@ -1,5 +1,5 @@
 /* Copy UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u32-strnlen.c b/lib/unistr/u32-strnlen.c
index de0b764aa4..a17f057071 100644
--- a/lib/unistr/u32-strnlen.c
+++ b/lib/unistr/u32-strnlen.c
@@ -1,5 +1,5 @@
 /* Determine bounded length of UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u32-strpbrk.c b/lib/unistr/u32-strpbrk.c
index a054ef6b55..1b6c8cc52f 100644
--- a/lib/unistr/u32-strpbrk.c
+++ b/lib/unistr/u32-strpbrk.c
@@ -1,5 +1,5 @@
 /* Search for some characters in UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u32-strrchr.c b/lib/unistr/u32-strrchr.c
index ab38bb2c0f..851b34cafe 100644
--- a/lib/unistr/u32-strrchr.c
+++ b/lib/unistr/u32-strrchr.c
@@ -1,5 +1,5 @@
 /* Search character in UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u32-strspn.c b/lib/unistr/u32-strspn.c
index ab089acf3c..85fcd3fb98 100644
--- a/lib/unistr/u32-strspn.c
+++ b/lib/unistr/u32-strspn.c
@@ -1,5 +1,5 @@
 /* Search for some characters in UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u32-strstr.c b/lib/unistr/u32-strstr.c
index f483c32fd2..261d93afb3 100644
--- a/lib/unistr/u32-strstr.c
+++ b/lib/unistr/u32-strstr.c
@@ -1,5 +1,5 @@
 /* Substring test for UTF-32 strings.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u32-strtok.c b/lib/unistr/u32-strtok.c
index 1fd9c10f46..e8bbaf4b5a 100644
--- a/lib/unistr/u32-strtok.c
+++ b/lib/unistr/u32-strtok.c
@@ -1,5 +1,5 @@
 /* Tokenize UTF-32 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u32-to-u16.c b/lib/unistr/u32-to-u16.c
index af12bd72ea..0c484cfc38 100644
--- a/lib/unistr/u32-to-u16.c
+++ b/lib/unistr/u32-to-u16.c
@@ -1,5 +1,5 @@
 /* Convert UTF-32 string to UTF-16 string.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u32-to-u8.c b/lib/unistr/u32-to-u8.c
index bf462b414d..306646e73b 100644
--- a/lib/unistr/u32-to-u8.c
+++ b/lib/unistr/u32-to-u8.c
@@ -1,5 +1,5 @@
 /* Convert UTF-32 string to UTF-8 string.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/unistr/u32-uctomb.c b/lib/unistr/u32-uctomb.c
index c6cd743949..83fc4263b9 100644
--- a/lib/unistr/u32-uctomb.c
+++ b/lib/unistr/u32-uctomb.c
@@ -1,5 +1,5 @@
 /* Store a character in UTF-32 string.
-   Copyright (C) 2002, 2005-2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2005-2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/unistr/u8-check.c b/lib/unistr/u8-check.c
index b6228c1f5a..2f03cd9af0 100644
--- a/lib/unistr/u8-check.c
+++ b/lib/unistr/u8-check.c
@@ -1,5 +1,5 @@
 /* Check UTF-8 string.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/unistr/u8-chr.c b/lib/unistr/u8-chr.c
index d309a82a7e..cb0f4a7f7c 100644
--- a/lib/unistr/u8-chr.c
+++ b/lib/unistr/u8-chr.c
@@ -1,5 +1,5 @@
 /* Search character in piece of UTF-8 string.
-   Copyright (C) 1999, 2002, 2006-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2006-2007, 2009-2023 Free Software Foundation,
    Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
diff --git a/lib/unistr/u8-cmp.c b/lib/unistr/u8-cmp.c
index effe0dceb7..5b6e92174e 100644
--- a/lib/unistr/u8-cmp.c
+++ b/lib/unistr/u8-cmp.c
@@ -1,5 +1,5 @@
 /* Compare pieces of UTF-8 strings.
-   Copyright (C) 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u8-cmp2.c b/lib/unistr/u8-cmp2.c
index 1864115f64..b48a3add26 100644
--- a/lib/unistr/u8-cmp2.c
+++ b/lib/unistr/u8-cmp2.c
@@ -1,5 +1,5 @@
 /* Compare pieces of UTF-8 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unistr/u8-cpy-alloc.c b/lib/unistr/u8-cpy-alloc.c
index 550f67776b..88cdb9fac3 100644
--- a/lib/unistr/u8-cpy-alloc.c
+++ b/lib/unistr/u8-cpy-alloc.c
@@ -1,5 +1,5 @@
 /* Copy piece of UTF-8 string.
-   Copyright (C) 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u8-cpy.c b/lib/unistr/u8-cpy.c
index e25c264c4b..e884b32927 100644
--- a/lib/unistr/u8-cpy.c
+++ b/lib/unistr/u8-cpy.c
@@ -1,5 +1,5 @@
 /* Copy piece of UTF-8 string.
-   Copyright (C) 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u8-endswith.c b/lib/unistr/u8-endswith.c
index 8173a884e5..21d9ba6403 100644
--- a/lib/unistr/u8-endswith.c
+++ b/lib/unistr/u8-endswith.c
@@ -1,5 +1,5 @@
 /* Substring test for UTF-8 strings.
-   Copyright (C) 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u8-mblen.c b/lib/unistr/u8-mblen.c
index c431c92ae2..a5f88dedef 100644
--- a/lib/unistr/u8-mblen.c
+++ b/lib/unistr/u8-mblen.c
@@ -1,5 +1,5 @@
 /* Look at first character in UTF-8 string.
-   Copyright (C) 1999-2000, 2002, 2006-2007, 2009-2022 Free Software
+   Copyright (C) 1999-2000, 2002, 2006-2007, 2009-2023 Free Software
    Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
diff --git a/lib/unistr/u8-mbsnlen.c b/lib/unistr/u8-mbsnlen.c
index 9c2fa4a3e5..947bcdcc02 100644
--- a/lib/unistr/u8-mbsnlen.c
+++ b/lib/unistr/u8-mbsnlen.c
@@ -1,5 +1,5 @@
 /* Count characters in UTF-8 string.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2007.
 
    This file is free software.
diff --git a/lib/unistr/u8-mbtouc-aux.c b/lib/unistr/u8-mbtouc-aux.c
index 018cf507d8..a6b7edcfb9 100644
--- a/lib/unistr/u8-mbtouc-aux.c
+++ b/lib/unistr/u8-mbtouc-aux.c
@@ -1,5 +1,5 @@
 /* Conversion UTF-8 to UCS-4.
-   Copyright (C) 2001-2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2001.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/unistr/u8-mbtouc-unsafe-aux.c 
b/lib/unistr/u8-mbtouc-unsafe-aux.c
index 36e40af81c..9e2e34b007 100644
--- a/lib/unistr/u8-mbtouc-unsafe-aux.c
+++ b/lib/unistr/u8-mbtouc-unsafe-aux.c
@@ -1,5 +1,5 @@
 /* Conversion UTF-8 to UCS-4.
-   Copyright (C) 2001-2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2001.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/unistr/u8-mbtouc-unsafe.c b/lib/unistr/u8-mbtouc-unsafe.c
index 3dd30a1239..71d0db839c 100644
--- a/lib/unistr/u8-mbtouc-unsafe.c
+++ b/lib/unistr/u8-mbtouc-unsafe.c
@@ -1,5 +1,5 @@
 /* Look at first character in UTF-8 string.
-   Copyright (C) 1999-2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999-2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2001.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/unistr/u8-mbtouc.c b/lib/unistr/u8-mbtouc.c
index 4525072407..e30e5203c1 100644
--- a/lib/unistr/u8-mbtouc.c
+++ b/lib/unistr/u8-mbtouc.c
@@ -1,5 +1,5 @@
 /* Look at first character in UTF-8 string.
-   Copyright (C) 1999-2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999-2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2001.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/unistr/u8-mbtoucr.c b/lib/unistr/u8-mbtoucr.c
index 6672298ab2..d09051128f 100644
--- a/lib/unistr/u8-mbtoucr.c
+++ b/lib/unistr/u8-mbtoucr.c
@@ -1,5 +1,5 @@
 /* Look at first character in UTF-8 string, returning an error code.
-   Copyright (C) 1999-2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999-2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2001.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/unistr/u8-move.c b/lib/unistr/u8-move.c
index d7b8225e14..c8dcf572cc 100644
--- a/lib/unistr/u8-move.c
+++ b/lib/unistr/u8-move.c
@@ -1,5 +1,5 @@
 /* Copy piece of UTF-8 string.
-   Copyright (C) 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u8-next.c b/lib/unistr/u8-next.c
index 0659855526..0e826844a4 100644
--- a/lib/unistr/u8-next.c
+++ b/lib/unistr/u8-next.c
@@ -1,5 +1,5 @@
 /* Iterate over next character in UTF-8 string.
-   Copyright (C) 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u8-prev.c b/lib/unistr/u8-prev.c
index d41629ef6f..1012486b36 100644
--- a/lib/unistr/u8-prev.c
+++ b/lib/unistr/u8-prev.c
@@ -1,5 +1,5 @@
 /* Iterate over previous character in UTF-8 string.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/unistr/u8-set.c b/lib/unistr/u8-set.c
index 250c0030de..628e026eeb 100644
--- a/lib/unistr/u8-set.c
+++ b/lib/unistr/u8-set.c
@@ -1,5 +1,5 @@
 /* Fill UTF-8 string.
-   Copyright (C) 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u8-startswith.c b/lib/unistr/u8-startswith.c
index b14fdb2f84..f7d658939a 100644
--- a/lib/unistr/u8-startswith.c
+++ b/lib/unistr/u8-startswith.c
@@ -1,5 +1,5 @@
 /* Substring test for UTF-8 strings.
-   Copyright (C) 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u8-stpcpy.c b/lib/unistr/u8-stpcpy.c
index 30b03bc105..8f931a707a 100644
--- a/lib/unistr/u8-stpcpy.c
+++ b/lib/unistr/u8-stpcpy.c
@@ -1,5 +1,5 @@
 /* Copy UTF-8 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u8-stpncpy.c b/lib/unistr/u8-stpncpy.c
index d235f46343..c16959b44e 100644
--- a/lib/unistr/u8-stpncpy.c
+++ b/lib/unistr/u8-stpncpy.c
@@ -1,5 +1,5 @@
 /* Copy UTF-8 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u8-strcat.c b/lib/unistr/u8-strcat.c
index aac9204337..781e4f178b 100644
--- a/lib/unistr/u8-strcat.c
+++ b/lib/unistr/u8-strcat.c
@@ -1,5 +1,5 @@
 /* Concatenate UTF-8 strings.
-   Copyright (C) 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u8-strchr.c b/lib/unistr/u8-strchr.c
index f5c098519d..d66a218e4d 100644
--- a/lib/unistr/u8-strchr.c
+++ b/lib/unistr/u8-strchr.c
@@ -1,5 +1,5 @@
 /* Search character in UTF-8 string.
-   Copyright (C) 1999, 2002, 2006-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2006-2007, 2009-2023 Free Software Foundation,
    Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
diff --git a/lib/unistr/u8-strcmp.c b/lib/unistr/u8-strcmp.c
index 0ff9ac0f9a..ff71cc533d 100644
--- a/lib/unistr/u8-strcmp.c
+++ b/lib/unistr/u8-strcmp.c
@@ -1,5 +1,5 @@
 /* Compare UTF-8 strings.
-   Copyright (C) 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u8-strcoll.c b/lib/unistr/u8-strcoll.c
index 56acf3c09f..2342cfb04a 100644
--- a/lib/unistr/u8-strcoll.c
+++ b/lib/unistr/u8-strcoll.c
@@ -1,5 +1,5 @@
 /* Compare UTF-8 strings using the collation rules of the current locale.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/unistr/u8-strcpy.c b/lib/unistr/u8-strcpy.c
index f705234fb7..1b9b82f614 100644
--- a/lib/unistr/u8-strcpy.c
+++ b/lib/unistr/u8-strcpy.c
@@ -1,5 +1,5 @@
 /* Copy UTF-8 string.
-   Copyright (C) 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u8-strcspn.c b/lib/unistr/u8-strcspn.c
index 404434ff45..d831e73f67 100644
--- a/lib/unistr/u8-strcspn.c
+++ b/lib/unistr/u8-strcspn.c
@@ -1,5 +1,5 @@
 /* Search for some characters in UTF-8 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u8-strdup.c b/lib/unistr/u8-strdup.c
index f66f46eed5..1882bbe2e3 100644
--- a/lib/unistr/u8-strdup.c
+++ b/lib/unistr/u8-strdup.c
@@ -1,5 +1,5 @@
 /* Copy UTF-8 string.
-   Copyright (C) 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u8-strlen.c b/lib/unistr/u8-strlen.c
index 6892ec0869..40b35a3fe7 100644
--- a/lib/unistr/u8-strlen.c
+++ b/lib/unistr/u8-strlen.c
@@ -1,5 +1,5 @@
 /* Determine length of UTF-8 string.
-   Copyright (C) 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/unistr/u8-strmblen.c b/lib/unistr/u8-strmblen.c
index 5e15636b3d..558771341a 100644
--- a/lib/unistr/u8-strmblen.c
+++ b/lib/unistr/u8-strmblen.c
@@ -1,5 +1,5 @@
 /* Look at first character in UTF-8 string.
-   Copyright (C) 1999-2000, 2002, 2006-2007, 2009-2022 Free Software
+   Copyright (C) 1999-2000, 2002, 2006-2007, 2009-2023 Free Software
    Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
diff --git a/lib/unistr/u8-strmbtouc.c b/lib/unistr/u8-strmbtouc.c
index 8af0bb2a28..a47fbbb84f 100644
--- a/lib/unistr/u8-strmbtouc.c
+++ b/lib/unistr/u8-strmbtouc.c
@@ -1,5 +1,5 @@
 /* Look at first character in UTF-8 string.
-   Copyright (C) 1999-2000, 2002, 2006-2007, 2009-2022 Free Software
+   Copyright (C) 1999-2000, 2002, 2006-2007, 2009-2023 Free Software
    Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
diff --git a/lib/unistr/u8-strncat.c b/lib/unistr/u8-strncat.c
index c5f91df581..8a6338d3a5 100644
--- a/lib/unistr/u8-strncat.c
+++ b/lib/unistr/u8-strncat.c
@@ -1,5 +1,5 @@
 /* Concatenate UTF-8 strings.
-   Copyright (C) 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u8-strncmp.c b/lib/unistr/u8-strncmp.c
index b534e08f42..5f06961ca6 100644
--- a/lib/unistr/u8-strncmp.c
+++ b/lib/unistr/u8-strncmp.c
@@ -1,5 +1,5 @@
 /* Compare UTF-8 strings.
-   Copyright (C) 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u8-strncpy.c b/lib/unistr/u8-strncpy.c
index caebbf776f..00ac9889df 100644
--- a/lib/unistr/u8-strncpy.c
+++ b/lib/unistr/u8-strncpy.c
@@ -1,5 +1,5 @@
 /* Copy UTF-8 string.
-   Copyright (C) 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u8-strnlen.c b/lib/unistr/u8-strnlen.c
index 1c60159384..837dcf3d61 100644
--- a/lib/unistr/u8-strnlen.c
+++ b/lib/unistr/u8-strnlen.c
@@ -1,5 +1,5 @@
 /* Determine bounded length of UTF-8 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u8-strpbrk.c b/lib/unistr/u8-strpbrk.c
index 54d75df55d..c9c09a7176 100644
--- a/lib/unistr/u8-strpbrk.c
+++ b/lib/unistr/u8-strpbrk.c
@@ -1,5 +1,5 @@
 /* Search for some characters in UTF-8 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u8-strrchr.c b/lib/unistr/u8-strrchr.c
index f9999836a1..958bec2c78 100644
--- a/lib/unistr/u8-strrchr.c
+++ b/lib/unistr/u8-strrchr.c
@@ -1,5 +1,5 @@
 /* Search character in UTF-8 string.
-   Copyright (C) 1999, 2002, 2006-2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002, 2006-2007, 2009-2023 Free Software Foundation,
    Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
diff --git a/lib/unistr/u8-strspn.c b/lib/unistr/u8-strspn.c
index 20a87fea3e..4b2bc31ffc 100644
--- a/lib/unistr/u8-strspn.c
+++ b/lib/unistr/u8-strspn.c
@@ -1,5 +1,5 @@
 /* Search for some characters in UTF-8 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u8-strstr.c b/lib/unistr/u8-strstr.c
index 8b34c0a9b9..13dceca57e 100644
--- a/lib/unistr/u8-strstr.c
+++ b/lib/unistr/u8-strstr.c
@@ -1,5 +1,5 @@
 /* Substring test for UTF-8 strings.
-   Copyright (C) 1999, 2002, 2006, 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2010-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u8-strtok.c b/lib/unistr/u8-strtok.c
index 285df308a6..221617937f 100644
--- a/lib/unistr/u8-strtok.c
+++ b/lib/unistr/u8-strtok.c
@@ -1,5 +1,5 @@
 /* Tokenize UTF-8 string.
-   Copyright (C) 1999, 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u8-to-u16.c b/lib/unistr/u8-to-u16.c
index 38d117b450..2715e19168 100644
--- a/lib/unistr/u8-to-u16.c
+++ b/lib/unistr/u8-to-u16.c
@@ -1,5 +1,5 @@
 /* Convert UTF-8 string to UTF-16 string.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/unistr/u8-to-u32.c b/lib/unistr/u8-to-u32.c
index 9f74ede5ea..9a446d25dc 100644
--- a/lib/unistr/u8-to-u32.c
+++ b/lib/unistr/u8-to-u32.c
@@ -1,5 +1,5 @@
 /* Convert UTF-8 string to UTF-32 string.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/unistr/u8-uctomb-aux.c b/lib/unistr/u8-uctomb-aux.c
index 5ca219152c..6deeeb72e2 100644
--- a/lib/unistr/u8-uctomb-aux.c
+++ b/lib/unistr/u8-uctomb-aux.c
@@ -1,5 +1,5 @@
 /* Conversion UCS-4 to UTF-8.
-   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/unistr/u8-uctomb.c b/lib/unistr/u8-uctomb.c
index 2259b1db19..58de19bb1a 100644
--- a/lib/unistr/u8-uctomb.c
+++ b/lib/unistr/u8-uctomb.c
@@ -1,5 +1,5 @@
 /* Store a character in UTF-8 string.
-   Copyright (C) 2002, 2005-2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2005-2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/unitypes.in.h b/lib/unitypes.in.h
index 4ea83aa813..d3a4c67a19 100644
--- a/lib/unitypes.in.h
+++ b/lib/unitypes.in.h
@@ -1,5 +1,5 @@
 /* Elementary types and macros for the GNU UniString library.
-   Copyright (C) 2002, 2005-2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2005-2006, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/uniwbrk.in.h b/lib/uniwbrk.in.h
index 694158f841..e9cde2ebe3 100644
--- a/lib/uniwbrk.in.h
+++ b/lib/uniwbrk.in.h
@@ -1,5 +1,5 @@
 /* Word breaks in Unicode strings.
-   Copyright (C) 2001-2003, 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2003, 2005-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/uniwbrk/u-wordbreaks.h b/lib/uniwbrk/u-wordbreaks.h
index 6d003ca419..4d4c79b1ef 100644
--- a/lib/uniwbrk/u-wordbreaks.h
+++ b/lib/uniwbrk/u-wordbreaks.h
@@ -1,5 +1,5 @@
 /* Word breaks in UTF-8/UTF-16/UTF-32 strings.  -*- coding: utf-8 -*-
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/uniwbrk/u16-wordbreaks.c b/lib/uniwbrk/u16-wordbreaks.c
index de2bd1987c..ce8aff412b 100644
--- a/lib/uniwbrk/u16-wordbreaks.c
+++ b/lib/uniwbrk/u16-wordbreaks.c
@@ -1,5 +1,5 @@
 /* Word breaks in UTF-16 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/uniwbrk/u32-wordbreaks.c b/lib/uniwbrk/u32-wordbreaks.c
index 74ea417c84..6d8e57e550 100644
--- a/lib/uniwbrk/u32-wordbreaks.c
+++ b/lib/uniwbrk/u32-wordbreaks.c
@@ -1,5 +1,5 @@
 /* Word breaks in UTF-32 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/uniwbrk/u8-wordbreaks.c b/lib/uniwbrk/u8-wordbreaks.c
index df305e272c..5ed2383fb2 100644
--- a/lib/uniwbrk/u8-wordbreaks.c
+++ b/lib/uniwbrk/u8-wordbreaks.c
@@ -1,5 +1,5 @@
 /* Word breaks in UTF-8 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/uniwbrk/ulc-wordbreaks.c b/lib/uniwbrk/ulc-wordbreaks.c
index b753d88d89..ff89decc0e 100644
--- a/lib/uniwbrk/ulc-wordbreaks.c
+++ b/lib/uniwbrk/ulc-wordbreaks.c
@@ -1,5 +1,5 @@
 /* Word breaks in strings.
-   Copyright (C) 2001-2003, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2003, 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/uniwbrk/wbrktable.c b/lib/uniwbrk/wbrktable.c
index 0e81414d8c..a05e0ec9e3 100644
--- a/lib/uniwbrk/wbrktable.c
+++ b/lib/uniwbrk/wbrktable.c
@@ -1,5 +1,5 @@
 /* Word break auxiliary table.  -*- coding: utf-8 -*-
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/uniwbrk/wbrktable.h b/lib/uniwbrk/wbrktable.h
index d4d2bfcaf5..162e4a8d48 100644
--- a/lib/uniwbrk/wbrktable.h
+++ b/lib/uniwbrk/wbrktable.h
@@ -1,5 +1,5 @@
 /* Word break auxiliary table.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/uniwbrk/wordbreak-property.c b/lib/uniwbrk/wordbreak-property.c
index 2774af2f25..d6ac456a96 100644
--- a/lib/uniwbrk/wordbreak-property.c
+++ b/lib/uniwbrk/wordbreak-property.c
@@ -1,5 +1,5 @@
 /* Word break property.
-   Copyright (C) 2001-2003, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2003, 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2009.
 
    This file is free software.
diff --git a/lib/uniwidth.in.h b/lib/uniwidth.in.h
index d5e62c4b5e..66829e459d 100644
--- a/lib/uniwidth.in.h
+++ b/lib/uniwidth.in.h
@@ -1,5 +1,5 @@
 /* Display width functions.
-   Copyright (C) 2001-2002, 2005, 2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 2001-2002, 2005, 2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/uniwidth/cjk.h b/lib/uniwidth/cjk.h
index b791ba96ca..98f7e92669 100644
--- a/lib/uniwidth/cjk.h
+++ b/lib/uniwidth/cjk.h
@@ -1,5 +1,5 @@
 /* Test for CJK encoding.
-   Copyright (C) 2001-2002, 2005-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2002, 2005-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/uniwidth/u16-strwidth.c b/lib/uniwidth/u16-strwidth.c
index 8e182f8d39..a839ffa5d1 100644
--- a/lib/uniwidth/u16-strwidth.c
+++ b/lib/uniwidth/u16-strwidth.c
@@ -1,5 +1,5 @@
 /* Determine display width of UTF-16 string.
-   Copyright (C) 2001-2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/uniwidth/u16-width.c b/lib/uniwidth/u16-width.c
index 4a513866b7..240cbe40e1 100644
--- a/lib/uniwidth/u16-width.c
+++ b/lib/uniwidth/u16-width.c
@@ -1,5 +1,5 @@
 /* Determine display width of UTF-16 string.
-   Copyright (C) 2001-2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/uniwidth/u32-strwidth.c b/lib/uniwidth/u32-strwidth.c
index 84e276e410..ef5109c4b8 100644
--- a/lib/uniwidth/u32-strwidth.c
+++ b/lib/uniwidth/u32-strwidth.c
@@ -1,5 +1,5 @@
 /* Determine display width of UTF-32 string.
-   Copyright (C) 2001-2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/uniwidth/u32-width.c b/lib/uniwidth/u32-width.c
index a3c15bd07e..01ce447d74 100644
--- a/lib/uniwidth/u32-width.c
+++ b/lib/uniwidth/u32-width.c
@@ -1,5 +1,5 @@
 /* Determine display width of UTF-32 string.
-   Copyright (C) 2001-2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/uniwidth/u8-strwidth.c b/lib/uniwidth/u8-strwidth.c
index d272c55d3d..4278cd2f36 100644
--- a/lib/uniwidth/u8-strwidth.c
+++ b/lib/uniwidth/u8-strwidth.c
@@ -1,5 +1,5 @@
 /* Determine display width of UTF-8 string.
-   Copyright (C) 2001-2002, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2002, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/uniwidth/u8-width.c b/lib/uniwidth/u8-width.c
index 01e2ddc757..077e6aefd8 100644
--- a/lib/uniwidth/u8-width.c
+++ b/lib/uniwidth/u8-width.c
@@ -1,5 +1,5 @@
 /* Determine display width of UTF-8 string.
-   Copyright (C) 2001-2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2002, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software.
diff --git a/lib/uniwidth/width.c b/lib/uniwidth/width.c
index 1c945a883d..c9d4d1dfe6 100644
--- a/lib/uniwidth/width.c
+++ b/lib/uniwidth/width.c
@@ -1,5 +1,5 @@
 /* Determine display width of Unicode character.
-   Copyright (C) 2001-2002, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2002, 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2002.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/unlink.c b/lib/unlink.c
index b549dd4abd..d77d26298e 100644
--- a/lib/unlink.c
+++ b/lib/unlink.c
@@ -1,6 +1,6 @@
 /* Work around unlink bugs.
 
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/unlinkat.c b/lib/unlinkat.c
index c9ff3ab2f1..ea3d5ea5aa 100644
--- a/lib/unlinkat.c
+++ b/lib/unlinkat.c
@@ -1,6 +1,6 @@
 /* Work around unlinkat bugs on Solaris 9 and Hurd.
 
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/unlinkdir.c b/lib/unlinkdir.c
index cca0effb3e..590bf462b2 100644
--- a/lib/unlinkdir.c
+++ b/lib/unlinkdir.c
@@ -1,6 +1,6 @@
 /* unlinkdir.c - determine whether we can unlink directories
 
-   Copyright (C) 2005-2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2006, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/unlinkdir.h b/lib/unlinkdir.h
index 8cf84b7b4c..d8ee146bbe 100644
--- a/lib/unlinkdir.h
+++ b/lib/unlinkdir.h
@@ -1,6 +1,6 @@
 /* unlinkdir.h - determine (and maybe change) whether we can unlink directories
 
-   Copyright (C) 2005, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/unlocked-io.h b/lib/unlocked-io.h
index 7461d74095..fdef624ab9 100644
--- a/lib/unlocked-io.h
+++ b/lib/unlocked-io.h
@@ -1,6 +1,6 @@
 /* Prefer faster, non-thread-safe stdio functions if available.
 
-   Copyright (C) 2001-2004, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2004, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/unlockpt.c b/lib/unlockpt.c
index 50e7c48615..be50669369 100644
--- a/lib/unlockpt.c
+++ b/lib/unlockpt.c
@@ -1,5 +1,5 @@
 /* Unlock the slave side of a pseudo-terminal from its master side.
-   Copyright (C) 1998, 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 1998, 2010-2023 Free Software Foundation, Inc.
    Contributed by Zack Weinberg <zack@rabi.phys.columbia.edu>, 1998.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/unsetenv.c b/lib/unsetenv.c
index 07eac6fdd6..e5489490f7 100644
--- a/lib/unsetenv.c
+++ b/lib/unsetenv.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1992, 1995-2002, 2005-2022 Free Software Foundation, Inc.
+/* Copyright (C) 1992, 1995-2002, 2005-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/unused-parameter.h b/lib/unused-parameter.h
index a7a5687e37..98ecde4104 100644
--- a/lib/unused-parameter.h
+++ b/lib/unused-parameter.h
@@ -1,5 +1,5 @@
 /* A C macro for declaring that specific function parameters are not used.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify it
    under the terms of the GNU Lesser General Public License as published
diff --git a/lib/userspec.c b/lib/userspec.c
index 0635bf8426..5958883ff4 100644
--- a/lib/userspec.c
+++ b/lib/userspec.c
@@ -1,5 +1,5 @@
 /* userspec.c -- Parse a user and group string.
-   Copyright (C) 1989-1992, 1997-1998, 2000, 2002-2022 Free Software
+   Copyright (C) 1989-1992, 1997-1998, 2000, 2002-2023 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/userspec.h b/lib/userspec.h
index 2f790f7c84..f41ea48097 100644
--- a/lib/userspec.h
+++ b/lib/userspec.h
@@ -1,5 +1,5 @@
 /* Parse a 'user:group' specifier (e.g. the first argument of chown utility).
-   Copyright (C) 2003-2022 Free Software Foundation, Inc.
+   Copyright (C) 2003-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/usleep.c b/lib/usleep.c
index e4289c4aab..08a2251ec7 100644
--- a/lib/usleep.c
+++ b/lib/usleep.c
@@ -1,5 +1,5 @@
 /* Pausing execution of the current thread.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Eric Blake <ebb9@byu.net>, 2009.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/utime.c b/lib/utime.c
index e8aae9ef9f..3cf1840feb 100644
--- a/lib/utime.c
+++ b/lib/utime.c
@@ -1,5 +1,5 @@
 /* Work around platform bugs in utime.
-   Copyright (C) 2017-2022 Free Software Foundation, Inc.
+   Copyright (C) 2017-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/utime.in.h b/lib/utime.in.h
index 6cf17b6798..b185019176 100644
--- a/lib/utime.in.h
+++ b/lib/utime.in.h
@@ -1,5 +1,5 @@
 /* Substitute for and wrapper around <utime.h>.
-   Copyright (C) 2017-2022 Free Software Foundation, Inc.
+   Copyright (C) 2017-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/utimecmp.c b/lib/utimecmp.c
index ae7729d26b..b1e5e2ba32 100644
--- a/lib/utimecmp.c
+++ b/lib/utimecmp.c
@@ -1,6 +1,6 @@
 /* utimecmp.c -- compare file timestamps
 
-   Copyright (C) 2004-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2004-2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/utimecmp.h b/lib/utimecmp.h
index 0736e7f4ca..95c8542079 100644
--- a/lib/utimecmp.h
+++ b/lib/utimecmp.h
@@ -1,6 +1,6 @@
 /* utimecmp.h -- compare file timestamps
 
-   Copyright (C) 2004, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2004, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/utimens.c b/lib/utimens.c
index 23b9180935..4c5377eca0 100644
--- a/lib/utimens.c
+++ b/lib/utimens.c
@@ -1,6 +1,6 @@
 /* Set file access and modification times.
 
-   Copyright (C) 2003-2022 Free Software Foundation, Inc.
+   Copyright (C) 2003-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/utimens.h b/lib/utimens.h
index 2ccc06e5ed..a7056981f3 100644
--- a/lib/utimens.h
+++ b/lib/utimens.h
@@ -1,6 +1,6 @@
 /* Set file access and modification times.
 
-   Copyright 2012-2022 Free Software Foundation, Inc.
+   Copyright 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/utimensat.c b/lib/utimensat.c
index f81b0c790e..5cff11cd0a 100644
--- a/lib/utimensat.c
+++ b/lib/utimensat.c
@@ -1,5 +1,5 @@
 /* Set the access and modification time of a file relative to directory fd.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/vasnprintf.c b/lib/vasnprintf.c
index 01d18bf598..ab11ad026e 100644
--- a/lib/vasnprintf.c
+++ b/lib/vasnprintf.c
@@ -1,5 +1,5 @@
 /* vsprintf with automatic memory allocation.
-   Copyright (C) 1999, 2002-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/vasnprintf.h b/lib/vasnprintf.h
index 27cf54c50f..f69649fb45 100644
--- a/lib/vasnprintf.h
+++ b/lib/vasnprintf.h
@@ -1,5 +1,5 @@
 /* vsprintf with automatic memory allocation.
-   Copyright (C) 2002-2004, 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002-2004, 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/vasprintf.c b/lib/vasprintf.c
index 218275f29b..d2878cd91d 100644
--- a/lib/vasprintf.c
+++ b/lib/vasprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 1999, 2002, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2006-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/vdprintf.c b/lib/vdprintf.c
index 8455f88689..2670a57e81 100644
--- a/lib/vdprintf.c
+++ b/lib/vdprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to a file descriptor.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/verify.h b/lib/verify.h
index cb635a9fc2..17d6e78c81 100644
--- a/lib/verify.h
+++ b/lib/verify.h
@@ -1,6 +1,6 @@
 /* Compile-time assert-like macros.
 
-   Copyright (C) 2005-2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2006, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/verror.c b/lib/verror.c
index 3b08b31d57..46bb230443 100644
--- a/lib/verror.c
+++ b/lib/verror.c
@@ -1,5 +1,5 @@
 /* va_list error handler for noninteractive utilities
-   Copyright (C) 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/verror.h b/lib/verror.h
index e52562cb0e..8917988db6 100644
--- a/lib/verror.h
+++ b/lib/verror.h
@@ -1,5 +1,5 @@
 /* Declaration for va_list error-reporting function
-   Copyright (C) 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/version-etc-fsf.c b/lib/version-etc-fsf.c
index 79ea256d73..a34996d175 100644
--- a/lib/version-etc-fsf.c
+++ b/lib/version-etc-fsf.c
@@ -1,5 +1,5 @@
 /* Variable with FSF copyright information, for version-etc.
-   Copyright (C) 1999-2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999-2006, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/version-etc.c b/lib/version-etc.c
index 6b27e327e5..8e3b5738c6 100644
--- a/lib/version-etc.c
+++ b/lib/version-etc.c
@@ -1,5 +1,5 @@
 /* Print --version and bug-reporting information in a consistent format.
-   Copyright (C) 1999-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
@@ -37,7 +37,7 @@
 # define PACKAGE PACKAGE_TARNAME
 #endif
 
-enum { COPYRIGHT_YEAR = 2022 };
+enum { COPYRIGHT_YEAR = 2023 };
 
 /* The three functions below display the --version information the
    standard way.
diff --git a/lib/version-etc.h b/lib/version-etc.h
index c6b4eef4b0..58297fc349 100644
--- a/lib/version-etc.h
+++ b/lib/version-etc.h
@@ -1,5 +1,5 @@
 /* Print --version and bug-reporting information in a consistent format.
-   Copyright (C) 1999, 2003, 2005, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2003, 2005, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/vfprintf.c b/lib/vfprintf.c
index 2dec6f90e7..01d79a2bec 100644
--- a/lib/vfprintf.c
+++ b/lib/vfprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to a stream.
-   Copyright (C) 2004, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2004, 2006-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/vla.h b/lib/vla.h
index ce02428f53..55f112a060 100644
--- a/lib/vla.h
+++ b/lib/vla.h
@@ -1,6 +1,6 @@
 /* vla.h - variable length arrays
 
-   Copyright 2014-2022 Free Software Foundation, Inc.
+   Copyright 2014-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/vma-iter.c b/lib/vma-iter.c
index 19a715ef14..ccb221d273 100644
--- a/lib/vma-iter.c
+++ b/lib/vma-iter.c
@@ -1,5 +1,5 @@
 /* Iteration over virtual memory areas.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011-2017.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/vma-iter.h b/lib/vma-iter.h
index 7c51fde87e..d181184aee 100644
--- a/lib/vma-iter.h
+++ b/lib/vma-iter.h
@@ -1,5 +1,5 @@
 /* Iteration over virtual memory areas.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/vprintf.c b/lib/vprintf.c
index bee072708e..a1975e506d 100644
--- a/lib/vprintf.c
+++ b/lib/vprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to a stream.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/vsnprintf.c b/lib/vsnprintf.c
index 80999e9b4e..acd4e2d4ea 100644
--- a/lib/vsnprintf.c
+++ b/lib/vsnprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 2004, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2004, 2006-2023 Free Software Foundation, Inc.
    Written by Simon Josefsson and Yoann Vandoorselaere <yoann@prelude-ids.org>.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index b49775f44e..9e23e2b748 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -1,5 +1,5 @@
 /* Formatted output to strings.
-   Copyright (C) 2004, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2004, 2006-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/w32sock.h b/lib/w32sock.h
index 17db3f12a8..84e46e3356 100644
--- a/lib/w32sock.h
+++ b/lib/w32sock.h
@@ -1,6 +1,6 @@
 /* w32sock.h --- internal auxiliary functions for Windows socket functions
 
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/wait-process.c b/lib/wait-process.c
index b12bd3c185..3e95b4efb5 100644
--- a/lib/wait-process.c
+++ b/lib/wait-process.c
@@ -1,5 +1,5 @@
 /* Waiting for a subprocess to finish.
-   Copyright (C) 2001-2003, 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2003, 2005-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <haible@clisp.cons.org>, 2001.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/wait-process.h b/lib/wait-process.h
index 008eaa9ca3..5543d741f7 100644
--- a/lib/wait-process.h
+++ b/lib/wait-process.h
@@ -1,5 +1,5 @@
 /* Waiting for a subprocess to finish.
-   Copyright (C) 2001-2003, 2006, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2003, 2006, 2008-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <haible@clisp.cons.org>, 2001.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/waitpid.c b/lib/waitpid.c
index 66c199f183..763d563064 100644
--- a/lib/waitpid.c
+++ b/lib/waitpid.c
@@ -1,5 +1,5 @@
 /* Wait for process state change.
-   Copyright (C) 2001-2003, 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2003, 2005-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/warn-on-use.h b/lib/warn-on-use.h
index 94f5b9201e..30756034af 100644
--- a/lib/warn-on-use.h
+++ b/lib/warn-on-use.h
@@ -1,5 +1,5 @@
 /* A C macro for emitting warnings if a function is used.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify it
    under the terms of the GNU Lesser General Public License as published
diff --git a/lib/wchar.in.h b/lib/wchar.in.h
index 70b8d7d259..09c9185f62 100644
--- a/lib/wchar.in.h
+++ b/lib/wchar.in.h
@@ -1,6 +1,6 @@
 /* A substitute for ISO C99 <wchar.h>, for platforms that have issues.
 
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/wcpcpy-impl.h b/lib/wcpcpy-impl.h
index 3ec460f4f3..2322bf7856 100644
--- a/lib/wcpcpy-impl.h
+++ b/lib/wcpcpy-impl.h
@@ -1,5 +1,5 @@
 /* Copy a wide string.
-   Copyright (C) 1999, 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 1999.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wcpcpy.c b/lib/wcpcpy.c
index 6a80ab6fb8..d86d530035 100644
--- a/lib/wcpcpy.c
+++ b/lib/wcpcpy.c
@@ -1,5 +1,5 @@
 /* Copy a wide string.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wcpncpy-impl.h b/lib/wcpncpy-impl.h
index 4164c7df93..b058f62431 100644
--- a/lib/wcpncpy-impl.h
+++ b/lib/wcpncpy-impl.h
@@ -1,5 +1,5 @@
 /* Copy a size-bounded wide string.
-   Copyright (C) 1999, 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 1999.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wcpncpy.c b/lib/wcpncpy.c
index 15fd095e8e..6efb64f061 100644
--- a/lib/wcpncpy.c
+++ b/lib/wcpncpy.c
@@ -1,5 +1,5 @@
 /* Copy a size-bounded wide string.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wcrtomb.c b/lib/wcrtomb.c
index e14d8022ab..48a6c8ebe6 100644
--- a/lib/wcrtomb.c
+++ b/lib/wcrtomb.c
@@ -1,5 +1,5 @@
 /* Convert wide character to multibyte character.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2008.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wcscasecmp-impl.h b/lib/wcscasecmp-impl.h
index 38b196a42a..de8fbdea21 100644
--- a/lib/wcscasecmp-impl.h
+++ b/lib/wcscasecmp-impl.h
@@ -1,5 +1,5 @@
 /* Compare two wide strings ignoring case.
-   Copyright (C) 1999, 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wcscasecmp.c b/lib/wcscasecmp.c
index 80cea28b4d..1f087fb6d4 100644
--- a/lib/wcscasecmp.c
+++ b/lib/wcscasecmp.c
@@ -1,5 +1,5 @@
 /* Compare two wide strings ignoring case.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wcscat-impl.h b/lib/wcscat-impl.h
index 8ceeb93bab..8571edc939 100644
--- a/lib/wcscat-impl.h
+++ b/lib/wcscat-impl.h
@@ -1,5 +1,5 @@
 /* Concatenate two wide strings.
-   Copyright (C) 1999, 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 1999.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wcscat.c b/lib/wcscat.c
index fc7a70e1c4..fb56993e64 100644
--- a/lib/wcscat.c
+++ b/lib/wcscat.c
@@ -1,5 +1,5 @@
 /* Concatenate two wide strings.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wcschr-impl.h b/lib/wcschr-impl.h
index b07f80e72a..d4ca0a6609 100644
--- a/lib/wcschr-impl.h
+++ b/lib/wcschr-impl.h
@@ -1,5 +1,5 @@
 /* Search wide string for a wide character.
-   Copyright (C) 1999, 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 1999.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wcschr.c b/lib/wcschr.c
index 57c9c57f61..20d849707b 100644
--- a/lib/wcschr.c
+++ b/lib/wcschr.c
@@ -1,5 +1,5 @@
 /* Search wide string for a wide character.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wcscmp-impl.h b/lib/wcscmp-impl.h
index e30ada7e7a..ba96db4f77 100644
--- a/lib/wcscmp-impl.h
+++ b/lib/wcscmp-impl.h
@@ -1,5 +1,5 @@
 /* Compare two wide strings.
-   Copyright (C) 1999, 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 1999.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wcscmp.c b/lib/wcscmp.c
index d51f0ad323..2ff4370435 100644
--- a/lib/wcscmp.c
+++ b/lib/wcscmp.c
@@ -1,5 +1,5 @@
 /* Compare two wide strings.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wcscoll-impl.h b/lib/wcscoll-impl.h
index 74078dcbb8..237847c5d4 100644
--- a/lib/wcscoll-impl.h
+++ b/lib/wcscoll-impl.h
@@ -1,5 +1,5 @@
 /* Compare two wide strings using the current locale.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wcscoll.c b/lib/wcscoll.c
index 7cd7857468..af398d7acb 100644
--- a/lib/wcscoll.c
+++ b/lib/wcscoll.c
@@ -1,5 +1,5 @@
 /* Compare two wide strings using the current locale.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wcscpy-impl.h b/lib/wcscpy-impl.h
index dc2b4c4c62..3cffc97607 100644
--- a/lib/wcscpy-impl.h
+++ b/lib/wcscpy-impl.h
@@ -1,5 +1,5 @@
 /* Copy a wide string.
-   Copyright (C) 1999, 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 1999.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wcscpy.c b/lib/wcscpy.c
index c7744aee12..4f36e670cf 100644
--- a/lib/wcscpy.c
+++ b/lib/wcscpy.c
@@ -1,5 +1,5 @@
 /* Copy a wide string.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wcscspn-impl.h b/lib/wcscspn-impl.h
index 6e3bc555a5..31319d7a15 100644
--- a/lib/wcscspn-impl.h
+++ b/lib/wcscspn-impl.h
@@ -1,5 +1,5 @@
 /* Search a wide string for any of a set of wide characters.
-   Copyright (C) 1999, 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 1999.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wcscspn.c b/lib/wcscspn.c
index 4deeef9dcc..85af5a8d7f 100644
--- a/lib/wcscspn.c
+++ b/lib/wcscspn.c
@@ -1,5 +1,5 @@
 /* Search a wide string for any of a set of wide characters.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wcsdup-impl.h b/lib/wcsdup-impl.h
index 6f382e9ca1..74c930e383 100644
--- a/lib/wcsdup-impl.h
+++ b/lib/wcsdup-impl.h
@@ -1,5 +1,5 @@
 /* Duplicate a wide string.
-   Copyright (C) 1999, 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 1999.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wcsdup.c b/lib/wcsdup.c
index cd12c3d0e4..f8f0337a27 100644
--- a/lib/wcsdup.c
+++ b/lib/wcsdup.c
@@ -1,5 +1,5 @@
 /* Duplicate a wide string.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wcsftime.c b/lib/wcsftime.c
index 76cddb902f..49a8a95d0a 100644
--- a/lib/wcsftime.c
+++ b/lib/wcsftime.c
@@ -1,5 +1,5 @@
 /* Work around platform bugs in wcsftime.
-   Copyright (C) 2017-2022 Free Software Foundation, Inc.
+   Copyright (C) 2017-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/wcslen-impl.h b/lib/wcslen-impl.h
index f0b9658353..72437c9ffb 100644
--- a/lib/wcslen-impl.h
+++ b/lib/wcslen-impl.h
@@ -1,5 +1,5 @@
 /* Determine the length of a wide string.
-   Copyright (C) 1999, 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 1999.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wcslen.c b/lib/wcslen.c
index d10aeb82c7..c1c48478f7 100644
--- a/lib/wcslen.c
+++ b/lib/wcslen.c
@@ -1,5 +1,5 @@
 /* Determine the length of a wide string.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wcsncasecmp-impl.h b/lib/wcsncasecmp-impl.h
index 71105d8399..786684dbf7 100644
--- a/lib/wcsncasecmp-impl.h
+++ b/lib/wcsncasecmp-impl.h
@@ -1,5 +1,5 @@
 /* Compare two wide strings ignoring case.
-   Copyright (C) 1999, 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wcsncasecmp.c b/lib/wcsncasecmp.c
index 3e9acd99f8..672510d339 100644
--- a/lib/wcsncasecmp.c
+++ b/lib/wcsncasecmp.c
@@ -1,5 +1,5 @@
 /* Compare two wide strings ignoring case.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wcsncat-impl.h b/lib/wcsncat-impl.h
index f6f72dd520..f05dcbd489 100644
--- a/lib/wcsncat-impl.h
+++ b/lib/wcsncat-impl.h
@@ -1,5 +1,5 @@
 /* Append part of a wide string to a wide string.
-   Copyright (C) 1999, 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 1999.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wcsncat.c b/lib/wcsncat.c
index e939820f99..754dbfaaea 100644
--- a/lib/wcsncat.c
+++ b/lib/wcsncat.c
@@ -1,5 +1,5 @@
 /* Append part of a wide string to a wide string.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wcsncmp-impl.h b/lib/wcsncmp-impl.h
index a794d26a3e..4ab49ebb3a 100644
--- a/lib/wcsncmp-impl.h
+++ b/lib/wcsncmp-impl.h
@@ -1,5 +1,5 @@
 /* Compare two wide strings.
-   Copyright (C) 1999, 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 1999.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wcsncmp.c b/lib/wcsncmp.c
index 6fa5f52bdb..3f0a148f9f 100644
--- a/lib/wcsncmp.c
+++ b/lib/wcsncmp.c
@@ -1,5 +1,5 @@
 /* Compare two wide strings.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wcsncpy-impl.h b/lib/wcsncpy-impl.h
index 19c06bb5db..5589cbdc42 100644
--- a/lib/wcsncpy-impl.h
+++ b/lib/wcsncpy-impl.h
@@ -1,5 +1,5 @@
 /* Copy a size-bounded wide string.
-   Copyright (C) 1999, 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 1999.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wcsncpy.c b/lib/wcsncpy.c
index 69a2b4633b..20aea39bdd 100644
--- a/lib/wcsncpy.c
+++ b/lib/wcsncpy.c
@@ -1,5 +1,5 @@
 /* Copy a size-bounded wide string.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wcsnlen-impl.h b/lib/wcsnlen-impl.h
index c907770497..fb7a0073ed 100644
--- a/lib/wcsnlen-impl.h
+++ b/lib/wcsnlen-impl.h
@@ -1,5 +1,5 @@
 /* Determine the length of a size-bounded wide string.
-   Copyright (C) 1999, 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 1999.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wcsnlen.c b/lib/wcsnlen.c
index 35b18270aa..405bebfde0 100644
--- a/lib/wcsnlen.c
+++ b/lib/wcsnlen.c
@@ -1,5 +1,5 @@
 /* Determine the length of a size-bounded wide string.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wcsnrtombs-impl.h b/lib/wcsnrtombs-impl.h
index 01cff6085a..1e0c9b8cbf 100644
--- a/lib/wcsnrtombs-impl.h
+++ b/lib/wcsnrtombs-impl.h
@@ -1,5 +1,5 @@
 /* Convert wide string to string.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2008.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wcsnrtombs.c b/lib/wcsnrtombs.c
index d2a8478dff..a3c9c078ef 100644
--- a/lib/wcsnrtombs.c
+++ b/lib/wcsnrtombs.c
@@ -1,5 +1,5 @@
 /* Convert wide string to string.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2008.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wcspbrk-impl.h b/lib/wcspbrk-impl.h
index b43e62eb7d..1905c4ee38 100644
--- a/lib/wcspbrk-impl.h
+++ b/lib/wcspbrk-impl.h
@@ -1,5 +1,5 @@
 /* Search a wide string for any of a set of wide characters.
-   Copyright (C) 1999, 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 1999.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wcspbrk.c b/lib/wcspbrk.c
index 4a765badeb..41256a231a 100644
--- a/lib/wcspbrk.c
+++ b/lib/wcspbrk.c
@@ -1,5 +1,5 @@
 /* Search a wide string for any of a set of wide characters.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wcsrchr-impl.h b/lib/wcsrchr-impl.h
index e0f9293302..0c350eb765 100644
--- a/lib/wcsrchr-impl.h
+++ b/lib/wcsrchr-impl.h
@@ -1,5 +1,5 @@
 /* Search wide string for a wide character.
-   Copyright (C) 1999, 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 1999.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wcsrchr.c b/lib/wcsrchr.c
index 3ca48d7401..db85b28cff 100644
--- a/lib/wcsrchr.c
+++ b/lib/wcsrchr.c
@@ -1,5 +1,5 @@
 /* Search wide string for a wide character.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wcsrtombs-impl.h b/lib/wcsrtombs-impl.h
index 0eb6907889..b8bf481471 100644
--- a/lib/wcsrtombs-impl.h
+++ b/lib/wcsrtombs-impl.h
@@ -1,5 +1,5 @@
 /* Convert wide string to string.
-   Copyright (C) 2008, 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008, 2010-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2008.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wcsrtombs-state.c b/lib/wcsrtombs-state.c
index a27718f2c4..c7d47c472e 100644
--- a/lib/wcsrtombs-state.c
+++ b/lib/wcsrtombs-state.c
@@ -1,5 +1,5 @@
 /* Convert wide string to string.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2008.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wcsrtombs.c b/lib/wcsrtombs.c
index 04c6798f02..98e469a1d5 100644
--- a/lib/wcsrtombs.c
+++ b/lib/wcsrtombs.c
@@ -1,5 +1,5 @@
 /* Convert wide string to string.
-   Copyright (C) 2008, 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008, 2010-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2008.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wcsspn-impl.h b/lib/wcsspn-impl.h
index 3a485e48b1..3f30268235 100644
--- a/lib/wcsspn-impl.h
+++ b/lib/wcsspn-impl.h
@@ -1,5 +1,5 @@
 /* Advance in a wide string, skipping any of a set of wide characters.
-   Copyright (C) 1999, 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 1999.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wcsspn.c b/lib/wcsspn.c
index c0382bad29..af64eb4f3c 100644
--- a/lib/wcsspn.c
+++ b/lib/wcsspn.c
@@ -1,5 +1,5 @@
 /* Advance in a wide string, skipping any of a set of wide characters.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wcsstr-impl.h b/lib/wcsstr-impl.h
index d715fb889e..c0eaa8575a 100644
--- a/lib/wcsstr-impl.h
+++ b/lib/wcsstr-impl.h
@@ -1,5 +1,5 @@
 /* Locate a substring in a wide string.
-   Copyright (C) 1999, 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 1999.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wcsstr.c b/lib/wcsstr.c
index 23cdd46021..47a947d02e 100644
--- a/lib/wcsstr.c
+++ b/lib/wcsstr.c
@@ -1,5 +1,5 @@
 /* Locate a substring in a wide string.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wcstok-impl.h b/lib/wcstok-impl.h
index c8031fa388..35db00fe98 100644
--- a/lib/wcstok-impl.h
+++ b/lib/wcstok-impl.h
@@ -1,5 +1,5 @@
 /* Split a wide string into tokens.
-   Copyright (C) 1999, 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 1999.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wcstok.c b/lib/wcstok.c
index a8eb43656e..0ae9389b96 100644
--- a/lib/wcstok.c
+++ b/lib/wcstok.c
@@ -1,5 +1,5 @@
 /* Split a wide string into tokens.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wcswidth-impl.h b/lib/wcswidth-impl.h
index e9da91a19e..606b3bdc1a 100644
--- a/lib/wcswidth-impl.h
+++ b/lib/wcswidth-impl.h
@@ -1,5 +1,5 @@
 /* Determine number of screen columns needed for a size-bounded wide string.
-   Copyright (C) 1999, 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 1999.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wcswidth.c b/lib/wcswidth.c
index 7125e27d1c..b4f926056b 100644
--- a/lib/wcswidth.c
+++ b/lib/wcswidth.c
@@ -1,5 +1,5 @@
 /* Determine number of screen columns needed for a size-bounded wide string.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wcsxfrm-impl.h b/lib/wcsxfrm-impl.h
index 0b942bf308..af9cb710d3 100644
--- a/lib/wcsxfrm-impl.h
+++ b/lib/wcsxfrm-impl.h
@@ -1,5 +1,5 @@
 /* Transform wide string for comparison using the current locale.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wcsxfrm.c b/lib/wcsxfrm.c
index b0d50d7c43..95d1bc7848 100644
--- a/lib/wcsxfrm.c
+++ b/lib/wcsxfrm.c
@@ -1,5 +1,5 @@
 /* Transform wide string for comparison using the current locale.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wctob.c b/lib/wctob.c
index 806d0fca26..df27febd8b 100644
--- a/lib/wctob.c
+++ b/lib/wctob.c
@@ -1,5 +1,5 @@
 /* Convert wide character to unibyte character.
-   Copyright (C) 2008, 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008, 2010-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2008.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wctomb-impl.h b/lib/wctomb-impl.h
index 7a0995a00f..9ba727edf3 100644
--- a/lib/wctomb-impl.h
+++ b/lib/wctomb-impl.h
@@ -1,5 +1,5 @@
 /* Convert wide character to multibyte character.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wctomb.c b/lib/wctomb.c
index bbaf2e0e20..1143a95dd0 100644
--- a/lib/wctomb.c
+++ b/lib/wctomb.c
@@ -1,5 +1,5 @@
 /* Convert wide character to multibyte character.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wctrans-impl.h b/lib/wctrans-impl.h
index 740d964e35..9bd7a38af9 100644
--- a/lib/wctrans-impl.h
+++ b/lib/wctrans-impl.h
@@ -1,5 +1,5 @@
 /* Get descriptor for a wide character case conversion.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wctrans.c b/lib/wctrans.c
index ed124a431f..e1db929362 100644
--- a/lib/wctrans.c
+++ b/lib/wctrans.c
@@ -1,5 +1,5 @@
 /* Get descriptor for a wide character case conversion.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wctype-h.c b/lib/wctype-h.c
index 1278143304..7d3e14a6b5 100644
--- a/lib/wctype-h.c
+++ b/lib/wctype-h.c
@@ -1,6 +1,6 @@
 /* Inline functions for <wctype.h>.
 
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/wctype-impl.h b/lib/wctype-impl.h
index 5efc372b4e..53d548e9a4 100644
--- a/lib/wctype-impl.h
+++ b/lib/wctype-impl.h
@@ -1,5 +1,5 @@
 /* Get descriptor for a wide character property.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wctype.c b/lib/wctype.c
index ba3ca4a025..839bf062b9 100644
--- a/lib/wctype.c
+++ b/lib/wctype.c
@@ -1,5 +1,5 @@
 /* Get descriptor for a wide character property.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wctype.in.h b/lib/wctype.in.h
index 98cafee774..f6e474d38d 100644
--- a/lib/wctype.in.h
+++ b/lib/wctype.in.h
@@ -1,6 +1,6 @@
 /* A substitute for ISO C99 <wctype.h>, for platforms that lack it.
 
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/wcwidth.c b/lib/wcwidth.c
index f99a0a6139..1d03665496 100644
--- a/lib/wcwidth.c
+++ b/lib/wcwidth.c
@@ -1,5 +1,5 @@
 /* Determine the number of screen columns needed for a character.
-   Copyright (C) 2006-2007, 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2007, 2010-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/windows-cond.c b/lib/windows-cond.c
index 8185b424bc..10b7106055 100644
--- a/lib/windows-cond.c
+++ b/lib/windows-cond.c
@@ -1,5 +1,5 @@
 /* Condition variables (native Windows implementation).
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/windows-cond.h b/lib/windows-cond.h
index a9f515b7ca..c187f04467 100644
--- a/lib/windows-cond.h
+++ b/lib/windows-cond.h
@@ -1,5 +1,5 @@
 /* Condition variables (native Windows implementation).
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/windows-initguard.h b/lib/windows-initguard.h
index a29d7e97bb..9d36f53c82 100644
--- a/lib/windows-initguard.h
+++ b/lib/windows-initguard.h
@@ -1,5 +1,5 @@
 /* Init guards, somewhat like spinlocks (native Windows implementation).
-   Copyright (C) 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/windows-mutex.c b/lib/windows-mutex.c
index 28e429c149..ab7258c9f0 100644
--- a/lib/windows-mutex.c
+++ b/lib/windows-mutex.c
@@ -1,5 +1,5 @@
 /* Plain mutexes (native Windows implementation).
-   Copyright (C) 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/windows-mutex.h b/lib/windows-mutex.h
index 7aedfdf67c..039eb7075a 100644
--- a/lib/windows-mutex.h
+++ b/lib/windows-mutex.h
@@ -1,5 +1,5 @@
 /* Plain mutexes (native Windows implementation).
-   Copyright (C) 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/windows-once.c b/lib/windows-once.c
index deea5487a3..0d28281ffd 100644
--- a/lib/windows-once.c
+++ b/lib/windows-once.c
@@ -1,5 +1,5 @@
 /* Once-only control (native Windows implementation).
-   Copyright (C) 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/windows-once.h b/lib/windows-once.h
index 85534c99c1..54885680e2 100644
--- a/lib/windows-once.h
+++ b/lib/windows-once.h
@@ -1,5 +1,5 @@
 /* Once-only control (native Windows implementation).
-   Copyright (C) 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/windows-recmutex.c b/lib/windows-recmutex.c
index d8087ac132..a8ce9a0481 100644
--- a/lib/windows-recmutex.c
+++ b/lib/windows-recmutex.c
@@ -1,5 +1,5 @@
 /* Plain recursive mutexes (native Windows implementation).
-   Copyright (C) 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/windows-recmutex.h b/lib/windows-recmutex.h
index 746e75c071..08ff459769 100644
--- a/lib/windows-recmutex.h
+++ b/lib/windows-recmutex.h
@@ -1,5 +1,5 @@
 /* Plain recursive mutexes (native Windows implementation).
-   Copyright (C) 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/windows-rwlock.c b/lib/windows-rwlock.c
index d186e037c2..7cbd7bb1dd 100644
--- a/lib/windows-rwlock.c
+++ b/lib/windows-rwlock.c
@@ -1,5 +1,5 @@
 /* Read-write locks (native Windows implementation).
-   Copyright (C) 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/windows-rwlock.h b/lib/windows-rwlock.h
index 65c5ab49df..fe8381e870 100644
--- a/lib/windows-rwlock.h
+++ b/lib/windows-rwlock.h
@@ -1,5 +1,5 @@
 /* Read-write locks (native Windows implementation).
-   Copyright (C) 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/windows-spawn.c b/lib/windows-spawn.c
index dcda62123e..f864db1317 100644
--- a/lib/windows-spawn.c
+++ b/lib/windows-spawn.c
@@ -1,5 +1,5 @@
 /* Auxiliary functions for the creation of subprocesses.  Native Windows API.
-   Copyright (C) 2001, 2003-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001, 2003-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2003.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/windows-spawn.h b/lib/windows-spawn.h
index 2081fe4204..42c5af7717 100644
--- a/lib/windows-spawn.h
+++ b/lib/windows-spawn.h
@@ -1,5 +1,5 @@
 /* Auxiliary functions for the creation of subprocesses.  Native Windows API.
-   Copyright (C) 2001, 2003-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001, 2003-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2003.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/windows-spin.c b/lib/windows-spin.c
index f05aaddce3..4419a6c0b8 100644
--- a/lib/windows-spin.c
+++ b/lib/windows-spin.c
@@ -1,5 +1,5 @@
 /* Spin locks (native Windows implementation).
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/windows-spin.h b/lib/windows-spin.h
index 48c0638437..914dc22101 100644
--- a/lib/windows-spin.h
+++ b/lib/windows-spin.h
@@ -1,5 +1,5 @@
 /* Spin locks (native Windows implementation).
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/windows-thread.c b/lib/windows-thread.c
index 5ae1e1445d..87866dd5b1 100644
--- a/lib/windows-thread.c
+++ b/lib/windows-thread.c
@@ -1,5 +1,5 @@
 /* Creating and controlling threads (native Windows implementation).
-   Copyright (C) 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/windows-thread.h b/lib/windows-thread.h
index 7606977123..68b8e96813 100644
--- a/lib/windows-thread.h
+++ b/lib/windows-thread.h
@@ -1,5 +1,5 @@
 /* Creating and controlling threads (native Windows implementation).
-   Copyright (C) 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/windows-timedmutex.c b/lib/windows-timedmutex.c
index c53be3bc51..301c80e363 100644
--- a/lib/windows-timedmutex.c
+++ b/lib/windows-timedmutex.c
@@ -1,5 +1,5 @@
 /* Timed mutexes (native Windows implementation).
-   Copyright (C) 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/windows-timedmutex.h b/lib/windows-timedmutex.h
index 7ab898454a..dec8feea00 100644
--- a/lib/windows-timedmutex.h
+++ b/lib/windows-timedmutex.h
@@ -1,5 +1,5 @@
 /* Timed mutexes (native Windows implementation).
-   Copyright (C) 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/windows-timedrecmutex.c b/lib/windows-timedrecmutex.c
index 1026d04449..301a9f9666 100644
--- a/lib/windows-timedrecmutex.c
+++ b/lib/windows-timedrecmutex.c
@@ -1,5 +1,5 @@
 /* Timed recursive mutexes (native Windows implementation).
-   Copyright (C) 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/windows-timedrecmutex.h b/lib/windows-timedrecmutex.h
index de2b6d83ca..daeb88fbbb 100644
--- a/lib/windows-timedrecmutex.h
+++ b/lib/windows-timedrecmutex.h
@@ -1,5 +1,5 @@
 /* Timed recursive mutexes (native Windows implementation).
-   Copyright (C) 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/windows-timedrwlock.c b/lib/windows-timedrwlock.c
index 8036716dde..e74fe1de3b 100644
--- a/lib/windows-timedrwlock.c
+++ b/lib/windows-timedrwlock.c
@@ -1,5 +1,5 @@
 /* Timed read-write locks (native Windows implementation).
-   Copyright (C) 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/windows-timedrwlock.h b/lib/windows-timedrwlock.h
index 638b90bcd1..68c93ed5fd 100644
--- a/lib/windows-timedrwlock.h
+++ b/lib/windows-timedrwlock.h
@@ -1,5 +1,5 @@
 /* Timed read-write locks (native Windows implementation).
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/windows-tls.c b/lib/windows-tls.c
index b24a7d5544..3b6ff80e51 100644
--- a/lib/windows-tls.c
+++ b/lib/windows-tls.c
@@ -1,5 +1,5 @@
 /* Thread-local storage (native Windows implementation).
-   Copyright (C) 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/windows-tls.h b/lib/windows-tls.h
index 0d2de56022..b1e4dbfba7 100644
--- a/lib/windows-tls.h
+++ b/lib/windows-tls.h
@@ -1,5 +1,5 @@
 /* Thread-local storage (native Windows implementation).
-   Copyright (C) 2005-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/wmemchr-impl.h b/lib/wmemchr-impl.h
index f92a362e8d..96b9ad3ade 100644
--- a/lib/wmemchr-impl.h
+++ b/lib/wmemchr-impl.h
@@ -1,5 +1,5 @@
 /* Search wide character array for a wide character.
-   Copyright (C) 1999, 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 1999.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wmemchr.c b/lib/wmemchr.c
index 127e1a5271..5d28247393 100644
--- a/lib/wmemchr.c
+++ b/lib/wmemchr.c
@@ -1,5 +1,5 @@
 /* Search wide character array for a wide character.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wmemcmp-impl.h b/lib/wmemcmp-impl.h
index 5c45c28d9c..2b8125fe26 100644
--- a/lib/wmemcmp-impl.h
+++ b/lib/wmemcmp-impl.h
@@ -1,5 +1,5 @@
 /* Compare wide character arrays.
-   Copyright (C) 1999, 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 1999.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wmemcmp.c b/lib/wmemcmp.c
index e98d88abf0..95893347fd 100644
--- a/lib/wmemcmp.c
+++ b/lib/wmemcmp.c
@@ -1,5 +1,5 @@
 /* Compare wide character arrays.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wmemcpy-impl.h b/lib/wmemcpy-impl.h
index 9dd8cd52c8..f0a7007506 100644
--- a/lib/wmemcpy-impl.h
+++ b/lib/wmemcpy-impl.h
@@ -1,5 +1,5 @@
 /* Copy wide character array.
-   Copyright (C) 1999, 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 1999.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wmemcpy.c b/lib/wmemcpy.c
index e33beb3350..0cfe407a1a 100644
--- a/lib/wmemcpy.c
+++ b/lib/wmemcpy.c
@@ -1,5 +1,5 @@
 /* Copy wide character array.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wmemmove-impl.h b/lib/wmemmove-impl.h
index 12b83dbebd..b9411d630a 100644
--- a/lib/wmemmove-impl.h
+++ b/lib/wmemmove-impl.h
@@ -1,5 +1,5 @@
 /* Copy wide character array.
-   Copyright (C) 1999, 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 1999.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wmemmove.c b/lib/wmemmove.c
index 9670dc4b4a..a65e658d5f 100644
--- a/lib/wmemmove.c
+++ b/lib/wmemmove.c
@@ -1,5 +1,5 @@
 /* Copy wide character array.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wmempcpy.c b/lib/wmempcpy.c
index cdfa9133df..6803ecb434 100644
--- a/lib/wmempcpy.c
+++ b/lib/wmempcpy.c
@@ -1,5 +1,5 @@
 /* Copy wide character array, return pointer after last written wide character.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/wmemset-impl.h b/lib/wmemset-impl.h
index 9a183507dc..d2cc14ad42 100644
--- a/lib/wmemset-impl.h
+++ b/lib/wmemset-impl.h
@@ -1,5 +1,5 @@
 /* Fill wide character array.
-   Copyright (C) 1999, 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 1999.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/wmemset.c b/lib/wmemset.c
index 74c5d8862b..72b9eb5f56 100644
--- a/lib/wmemset.c
+++ b/lib/wmemset.c
@@ -1,5 +1,5 @@
 /* Fill wide character array.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2011.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/write-any-file.c b/lib/write-any-file.c
index da55240fcb..1eefeaa6ed 100644
--- a/lib/write-any-file.c
+++ b/lib/write-any-file.c
@@ -1,6 +1,6 @@
 /* Determine whether we can write any file.
 
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/write-any-file.h b/lib/write-any-file.h
index 3e06a6b07b..5b4860935f 100644
--- a/lib/write-any-file.h
+++ b/lib/write-any-file.h
@@ -1,6 +1,6 @@
 /* Determine whether we can write any file.
 
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published
diff --git a/lib/write.c b/lib/write.c
index bcbc97c63c..d2fc18a776 100644
--- a/lib/write.c
+++ b/lib/write.c
@@ -1,5 +1,5 @@
 /* POSIX compatible write() function.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2008.
 
    This file is free software: you can redistribute it and/or modify
diff --git a/lib/xalignalloc.c b/lib/xalignalloc.c
index 66b682f26a..b10bb1d93f 100644
--- a/lib/xalignalloc.c
+++ b/lib/xalignalloc.c
@@ -1,6 +1,6 @@
 /* checked aligned memory allocation
 
-   Copyright 2022 Free Software Foundation, Inc.
+   Copyright 2022-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/xalloc-die.c b/lib/xalloc-die.c
index 5b947f10d4..7605eee151 100644
--- a/lib/xalloc-die.c
+++ b/lib/xalloc-die.c
@@ -1,6 +1,6 @@
 /* Report a memory allocation failure and exit.
 
-   Copyright (C) 1997-2000, 2002-2004, 2006, 2009-2022 Free Software
+   Copyright (C) 1997-2000, 2002-2004, 2006, 2009-2023 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/xalloc-oversized.h b/lib/xalloc-oversized.h
index aefa6fd804..5dbdfb5506 100644
--- a/lib/xalloc-oversized.h
+++ b/lib/xalloc-oversized.h
@@ -1,6 +1,6 @@
 /* xalloc-oversized.h -- memory allocation size checking
 
-   Copyright (C) 1990-2000, 2003-2004, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 1990-2000, 2003-2004, 2006-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/xalloc.h b/lib/xalloc.h
index 01a9eec8da..f373c2fe59 100644
--- a/lib/xalloc.h
+++ b/lib/xalloc.h
@@ -1,6 +1,6 @@
 /* xalloc.h -- malloc with out-of-memory checking
 
-   Copyright (C) 1990-2000, 2003-2004, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 1990-2000, 2003-2004, 2006-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/xasprintf.c b/lib/xasprintf.c
index 01ad8785d3..5bd8684e01 100644
--- a/lib/xasprintf.c
+++ b/lib/xasprintf.c
@@ -1,5 +1,5 @@
 /* vasprintf and asprintf with out-of-memory checking.
-   Copyright (C) 1999, 2002-2004, 2006, 2009-2022 Free Software Foundation,
+   Copyright (C) 1999, 2002-2004, 2006, 2009-2023 Free Software Foundation,
    Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/xbinary-io.c b/lib/xbinary-io.c
index 159b79f2ab..a85ed549ad 100644
--- a/lib/xbinary-io.c
+++ b/lib/xbinary-io.c
@@ -1,5 +1,5 @@
 /* Binary mode I/O with checking
-   Copyright 2017-2022 Free Software Foundation, Inc.
+   Copyright 2017-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/xbinary-io.h b/lib/xbinary-io.h
index 144df9e983..e66df769f4 100644
--- a/lib/xbinary-io.h
+++ b/lib/xbinary-io.h
@@ -1,5 +1,5 @@
 /* Binary mode I/O with checking
-   Copyright 2017-2022 Free Software Foundation, Inc.
+   Copyright 2017-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/xconcat-filename.c b/lib/xconcat-filename.c
index 6d77578d1f..a8d2a307a3 100644
--- a/lib/xconcat-filename.c
+++ b/lib/xconcat-filename.c
@@ -1,5 +1,5 @@
 /* Construct a full filename from a directory and a relative filename.
-   Copyright (C) 2001-2004, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2004, 2006-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify it
    under the terms of the GNU General Public License as published by the
diff --git a/lib/xfreopen.c b/lib/xfreopen.c
index 8d7e14c936..e776ff70c1 100644
--- a/lib/xfreopen.c
+++ b/lib/xfreopen.c
@@ -1,5 +1,5 @@
 /* Open a file, reusing a given stream, with error checking.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/xfreopen.h b/lib/xfreopen.h
index d380cdb404..dc124c36af 100644
--- a/lib/xfreopen.h
+++ b/lib/xfreopen.h
@@ -1,5 +1,5 @@
 /* Open a file, reusing a given stream, with error checking.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published
diff --git a/lib/xgetaname-impl.h b/lib/xgetaname-impl.h
index 83661665ea..ab11828330 100644
--- a/lib/xgetaname-impl.h
+++ b/lib/xgetaname-impl.h
@@ -1,6 +1,6 @@
 /* xgetaname-impl.c -- common implementation of xgethostname and xgetdomainname
 
-   Copyright (C) 1992, 1996, 2000-2001, 2003-2006, 2009-2022 Free Software
+   Copyright (C) 1992, 1996, 2000-2001, 2003-2006, 2009-2023 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/xgetcwd.c b/lib/xgetcwd.c
index 619c77038a..6c7c3d3107 100644
--- a/lib/xgetcwd.c
+++ b/lib/xgetcwd.c
@@ -1,6 +1,6 @@
 /* xgetcwd.c -- return current directory with unlimited length
 
-   Copyright (C) 2001, 2003-2004, 2006-2007, 2009-2022 Free Software
+   Copyright (C) 2001, 2003-2004, 2006-2007, 2009-2023 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/xgetcwd.h b/lib/xgetcwd.h
index 65f163520e..7467bc7bf1 100644
--- a/lib/xgetcwd.h
+++ b/lib/xgetcwd.h
@@ -1,5 +1,5 @@
 /* prototype for xgetcwd
-   Copyright (C) 1995, 2001, 2003, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1995, 2001, 2003, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/xgetdomainname.c b/lib/xgetdomainname.c
index 8c941323ba..e64badbf35 100644
--- a/lib/xgetdomainname.c
+++ b/lib/xgetdomainname.c
@@ -1,6 +1,6 @@
 /* Return the NIS domain name, without size limitations.
 
-   Copyright (C) 1992-2022 Free Software Foundation, Inc.
+   Copyright (C) 1992-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published
diff --git a/lib/xgetdomainname.h b/lib/xgetdomainname.h
index fcaa167217..2d4d67bdf2 100644
--- a/lib/xgetdomainname.h
+++ b/lib/xgetdomainname.h
@@ -1,5 +1,5 @@
 /* xgetdomainname.h -- Return the NIS domain name, without size limitations.
-   Copyright (C) 1992, 1996, 2000-2001, 2003, 2009-2022 Free Software
+   Copyright (C) 1992, 1996, 2000-2001, 2003, 2009-2023 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/xgetgroups.c b/lib/xgetgroups.c
index 192b288241..a9162a7d7e 100644
--- a/lib/xgetgroups.c
+++ b/lib/xgetgroups.c
@@ -1,6 +1,6 @@
 /* xgetgroups.c -- return a list of the groups a user or current process is in
 
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/xgethostname.c b/lib/xgethostname.c
index 73f461ffe8..7a84fff27a 100644
--- a/lib/xgethostname.c
+++ b/lib/xgethostname.c
@@ -1,6 +1,6 @@
 /* xgethostname.c -- return current hostname with unlimited length
 
-   Copyright (C) 1992, 1996, 2000-2001, 2003-2006, 2009-2022 Free Software
+   Copyright (C) 1992, 1996, 2000-2001, 2003-2006, 2009-2023 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/xgethostname.h b/lib/xgethostname.h
index 591c068774..aad35601a8 100644
--- a/lib/xgethostname.h
+++ b/lib/xgethostname.h
@@ -1,6 +1,6 @@
 /* Return current hostname with unlimited length.
 
-   Copyright (C) 2003-2022 Free Software Foundation, Inc.
+   Copyright (C) 2003-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published
diff --git a/lib/xhash.c b/lib/xhash.c
index 512550153e..99c9f90dd6 100644
--- a/lib/xhash.c
+++ b/lib/xhash.c
@@ -1,6 +1,6 @@
 /* hash - hashing table processing.
 
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/xmalloc.c b/lib/xmalloc.c
index 84cdf1f2fd..289cbd05fc 100644
--- a/lib/xmalloc.c
+++ b/lib/xmalloc.c
@@ -1,6 +1,6 @@
 /* xmalloc.c -- malloc with out of memory checking
 
-   Copyright (C) 1990-2000, 2002-2006, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 1990-2000, 2002-2006, 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/xmalloca.c b/lib/xmalloca.c
index 2847c62610..329ebd0d8d 100644
--- a/lib/xmalloca.c
+++ b/lib/xmalloca.c
@@ -1,5 +1,5 @@
 /* Safe automatic memory allocation with out of memory checking.
-   Copyright (C) 2003, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2003, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2003.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/xmalloca.h b/lib/xmalloca.h
index c2d21c4622..4b1bd470c2 100644
--- a/lib/xmalloca.h
+++ b/lib/xmalloca.h
@@ -1,5 +1,5 @@
 /* Safe automatic memory allocation with out of memory checking.
-   Copyright (C) 2003, 2005, 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2003, 2005, 2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2003.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/xmemcoll.c b/lib/xmemcoll.c
index cc5c621452..5a15d2b221 100644
--- a/lib/xmemcoll.c
+++ b/lib/xmemcoll.c
@@ -1,6 +1,6 @@
 /* Locale-specific memory comparison.
 
-   Copyright (C) 2002-2004, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002-2004, 2006, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/xmemcoll.h b/lib/xmemcoll.h
index 83b96c10c9..a57305c71b 100644
--- a/lib/xmemcoll.h
+++ b/lib/xmemcoll.h
@@ -1,6 +1,6 @@
 /* Locale-specific memory comparison.
 
-   Copyright (C) 2002-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published
diff --git a/lib/xmemdup0.c b/lib/xmemdup0.c
index f968e843d6..7cedeb5d9c 100644
--- a/lib/xmemdup0.c
+++ b/lib/xmemdup0.c
@@ -1,6 +1,6 @@
 /* xmemdup0.c -- copy a block of arbitrary bytes, plus a trailing NUL
 
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/xmemdup0.h b/lib/xmemdup0.h
index b822a24905..4f9888c314 100644
--- a/lib/xmemdup0.h
+++ b/lib/xmemdup0.h
@@ -1,6 +1,6 @@
 /* xmemdup0.h -- copy a block of arbitrary bytes, plus a trailing NUL
 
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/xnanosleep.c b/lib/xnanosleep.c
index aece6adc9f..9cb56da7d3 100644
--- a/lib/xnanosleep.c
+++ b/lib/xnanosleep.c
@@ -1,6 +1,6 @@
 /* A variant of nanosleep that takes a 'double' argument and handles EINTR.
 
-   Copyright (C) 2002-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002-2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/xnanosleep.h b/lib/xnanosleep.h
index e5736162b4..1b9e62674e 100644
--- a/lib/xnanosleep.h
+++ b/lib/xnanosleep.h
@@ -1,5 +1,5 @@
 /* A variant of nanosleep that takes a 'double' argument and handles EINTR.
-   Copyright (C) 2004-2022 Free Software Foundation, Inc.
+   Copyright (C) 2004-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published
diff --git a/lib/xprintf.c b/lib/xprintf.c
index e06488dbd4..fbdd96cce4 100644
--- a/lib/xprintf.c
+++ b/lib/xprintf.c
@@ -1,5 +1,5 @@
 /* printf wrappers that fail immediately for non-file-related errors
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/xprintf.h b/lib/xprintf.h
index d86fe0cbd1..ae1ea8f71d 100644
--- a/lib/xprintf.h
+++ b/lib/xprintf.h
@@ -1,5 +1,5 @@
 /* printf wrappers that fail immediately for non-file-related errors
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/xreadlink.c b/lib/xreadlink.c
index b496a52c2f..de7755d9a3 100644
--- a/lib/xreadlink.c
+++ b/lib/xreadlink.c
@@ -1,6 +1,6 @@
 /* xreadlink.c -- readlink wrapper to return the link name in malloc'd storage
 
-   Copyright (C) 2001, 2003-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001, 2003-2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/xreadlink.h b/lib/xreadlink.h
index f68502f574..48438ce7cb 100644
--- a/lib/xreadlink.h
+++ b/lib/xreadlink.h
@@ -1,6 +1,6 @@
 /* Reading symbolic links without size limitation.
 
-   Copyright (C) 2001, 2003-2004, 2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 2001, 2003-2004, 2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/xreadlinkat.c b/lib/xreadlinkat.c
index ef246975d1..3e49434ed6 100644
--- a/lib/xreadlinkat.c
+++ b/lib/xreadlinkat.c
@@ -1,6 +1,6 @@
 /* xreadlinkat.c -- readlink wrapper to return the link name in malloc'd 
storage
 
-   Copyright (C) 2001, 2003-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001, 2003-2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/xsetenv.c b/lib/xsetenv.c
index 12aa2880a8..2763997df6 100644
--- a/lib/xsetenv.c
+++ b/lib/xsetenv.c
@@ -1,5 +1,5 @@
 /* Setting environment variables, with out-of-memory checking.
-   Copyright (C) 2001-2002, 2005-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2002, 2005-2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/xsetenv.h b/lib/xsetenv.h
index b4137e6c4b..21d4c27731 100644
--- a/lib/xsetenv.h
+++ b/lib/xsetenv.h
@@ -1,5 +1,5 @@
 /* Setting environment variables, with out-of-memory checking.
-   Copyright (C) 2001-2002, 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2002, 2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/xsize.c b/lib/xsize.c
index 761e3434d1..279ae824f8 100644
--- a/lib/xsize.c
+++ b/lib/xsize.c
@@ -1,6 +1,6 @@
 /* Checked size_t computations.
 
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/xsize.h b/lib/xsize.h
index 0bfa4c8899..1ec78e776f 100644
--- a/lib/xsize.h
+++ b/lib/xsize.h
@@ -1,6 +1,6 @@
 /* xsize.h -- Checked size_t computations.
 
-   Copyright (C) 2003, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2003, 2008-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/lib/xstdopen.c b/lib/xstdopen.c
index 844512a33e..76d4781528 100644
--- a/lib/xstdopen.c
+++ b/lib/xstdopen.c
@@ -1,5 +1,5 @@
 /* Ensure that stdin, stdout, stderr are open.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/xstdopen.h b/lib/xstdopen.h
index 0c18209e18..c317bff606 100644
--- a/lib/xstdopen.h
+++ b/lib/xstdopen.h
@@ -1,5 +1,5 @@
 /* Ensure that stdin, stdout, stderr are open.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/xstriconv.c b/lib/xstriconv.c
index 939d195f34..77b7ac0354 100644
--- a/lib/xstriconv.c
+++ b/lib/xstriconv.c
@@ -1,5 +1,5 @@
 /* Charset conversion with out-of-memory checking.
-   Copyright (C) 2001-2004, 2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2004, 2006, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/xstriconv.h b/lib/xstriconv.h
index 34752707a7..f693194f8d 100644
--- a/lib/xstriconv.h
+++ b/lib/xstriconv.h
@@ -1,5 +1,5 @@
 /* Charset conversion with out-of-memory checking.
-   Copyright (C) 2001-2004, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2004, 2006-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible and Simon Josefsson.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/xstriconveh.c b/lib/xstriconveh.c
index a070ca0657..93aec6d541 100644
--- a/lib/xstriconveh.c
+++ b/lib/xstriconveh.c
@@ -1,5 +1,5 @@
 /* Charset conversion with out-of-memory checking.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/xstriconveh.h b/lib/xstriconveh.h
index 1482f30b10..bb3c3a8db0 100644
--- a/lib/xstriconveh.h
+++ b/lib/xstriconveh.h
@@ -1,5 +1,5 @@
 /* Charset conversion with out-of-memory checking.
-   Copyright (C) 2001-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2007, 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible and Simon Josefsson.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/xstrndup.c b/lib/xstrndup.c
index a420212db1..2c3796e7ab 100644
--- a/lib/xstrndup.c
+++ b/lib/xstrndup.c
@@ -1,6 +1,6 @@
 /* Duplicate a bounded initial segment of a string, with out-of-memory
    checking.
-   Copyright (C) 2003, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2003, 2006-2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/xstrndup.h b/lib/xstrndup.h
index fdd6573660..502881ea3d 100644
--- a/lib/xstrndup.h
+++ b/lib/xstrndup.h
@@ -1,6 +1,6 @@
 /* Duplicate a bounded initial segment of a string, with out-of-memory
    checking.
-   Copyright (C) 2003, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2003, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/xstrtod.c b/lib/xstrtod.c
index 6f861fb3ff..ed90c7a056 100644
--- a/lib/xstrtod.c
+++ b/lib/xstrtod.c
@@ -1,6 +1,6 @@
 /* error-checking interface to strtod-like functions
 
-   Copyright (C) 1996, 1999-2000, 2003-2006, 2009-2022 Free Software
+   Copyright (C) 1996, 1999-2000, 2003-2006, 2009-2023 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/xstrtod.h b/lib/xstrtod.h
index 9f38326531..38c982915a 100644
--- a/lib/xstrtod.h
+++ b/lib/xstrtod.h
@@ -1,6 +1,6 @@
 /* Error-checking interface to strtod-like functions.
 
-   Copyright (C) 1996, 1998, 2003-2004, 2006, 2009-2022 Free Software
+   Copyright (C) 1996, 1998, 2003-2004, 2006, 2009-2023 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/xstrtoimax.c b/lib/xstrtoimax.c
index f01d2d746a..1064bc3007 100644
--- a/lib/xstrtoimax.c
+++ b/lib/xstrtoimax.c
@@ -1,6 +1,6 @@
 /* A more useful interface to strtoimax.
 
-   Copyright (C) 2001-2022 Free Software Foundation, Inc.
+   Copyright (C) 2001-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published
diff --git a/lib/xstrtol-error.c b/lib/xstrtol-error.c
index 4f4d90e3c1..7749e02137 100644
--- a/lib/xstrtol-error.c
+++ b/lib/xstrtol-error.c
@@ -1,6 +1,6 @@
 /* A more useful interface to strtol.
 
-   Copyright (C) 1995-1996, 1998-1999, 2001-2004, 2006-2022 Free Software
+   Copyright (C) 1995-1996, 1998-1999, 2001-2004, 2006-2023 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/xstrtol-error.h b/lib/xstrtol-error.h
index 5388437208..e79ff151ee 100644
--- a/lib/xstrtol-error.h
+++ b/lib/xstrtol-error.h
@@ -1,6 +1,6 @@
 /* Error reporting interface for xstrto* functions.
 
-   Copyright (C) 1995-1996, 1998-1999, 2001-2004, 2006-2022 Free Software
+   Copyright (C) 1995-1996, 1998-1999, 2001-2004, 2006-2023 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/xstrtol.c b/lib/xstrtol.c
index 0c9910bbff..9695b42ee9 100644
--- a/lib/xstrtol.c
+++ b/lib/xstrtol.c
@@ -1,6 +1,6 @@
 /* A more useful interface to strtol.
 
-   Copyright (C) 1995-1996, 1998-2001, 2003-2007, 2009-2022 Free Software
+   Copyright (C) 1995-1996, 1998-2001, 2003-2007, 2009-2023 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/xstrtol.h b/lib/xstrtol.h
index a0159a772a..f70119a8d4 100644
--- a/lib/xstrtol.h
+++ b/lib/xstrtol.h
@@ -1,6 +1,6 @@
 /* A more useful interface to strtol.
 
-   Copyright (C) 1995-1996, 1998-1999, 2001-2004, 2006-2022 Free Software
+   Copyright (C) 1995-1996, 1998-1999, 2001-2004, 2006-2023 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/lib/xstrtold.c b/lib/xstrtold.c
index eacdb2c9c9..0cd357bdd5 100644
--- a/lib/xstrtold.c
+++ b/lib/xstrtold.c
@@ -1,6 +1,6 @@
 /* Convert string to 'long double', with error checking.
 
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published
diff --git a/lib/xstrtoll.c b/lib/xstrtoll.c
index 11dbcb2951..2127c9d610 100644
--- a/lib/xstrtoll.c
+++ b/lib/xstrtoll.c
@@ -1,6 +1,6 @@
 /* Convert string to 'long long', with error checking.
 
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published
diff --git a/lib/xstrtoul.c b/lib/xstrtoul.c
index 368e815321..33c38d46fd 100644
--- a/lib/xstrtoul.c
+++ b/lib/xstrtoul.c
@@ -1,6 +1,6 @@
 /* Convert string to 'unsigned long', with error checking.
 
-   Copyright (C) 1994-2022 Free Software Foundation, Inc.
+   Copyright (C) 1994-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published
diff --git a/lib/xstrtoull.c b/lib/xstrtoull.c
index df4a3ce592..543e30a09a 100644
--- a/lib/xstrtoull.c
+++ b/lib/xstrtoull.c
@@ -1,6 +1,6 @@
 /* Convert string to 'unsigned long long', with error checking.
 
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published
diff --git a/lib/xstrtoumax.c b/lib/xstrtoumax.c
index 8f4feb6044..6a4cf34ec9 100644
--- a/lib/xstrtoumax.c
+++ b/lib/xstrtoumax.c
@@ -1,6 +1,6 @@
 /* A more useful interface to strtoumax.
 
-   Copyright (C) 1999-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published
diff --git a/lib/xtime.c b/lib/xtime.c
index 3b64e9e531..9034c76a41 100644
--- a/lib/xtime.c
+++ b/lib/xtime.c
@@ -1,6 +1,6 @@
 /* xtime -- extended-resolution integer timestamps
 
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published
diff --git a/lib/xtime.h b/lib/xtime.h
index b131d08453..ddad01ed47 100644
--- a/lib/xtime.h
+++ b/lib/xtime.h
@@ -1,6 +1,6 @@
 /* xtime -- extended-resolution integer timestamps
 
-   Copyright (C) 2005-2006, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2006, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/xvasprintf.c b/lib/xvasprintf.c
index faca818e7d..1cedfbf122 100644
--- a/lib/xvasprintf.c
+++ b/lib/xvasprintf.c
@@ -1,5 +1,5 @@
 /* vasprintf and asprintf with out-of-memory checking.
-   Copyright (C) 1999, 2002-2004, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002-2004, 2006-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/xvasprintf.h b/lib/xvasprintf.h
index e5d76fd625..2f941ab22a 100644
--- a/lib/xvasprintf.h
+++ b/lib/xvasprintf.h
@@ -1,5 +1,5 @@
 /* vasprintf and asprintf with out-of-memory checking.
-   Copyright (C) 2002-2004, 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002-2004, 2006-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/yesno.c b/lib/yesno.c
index 685f12ba1d..b731068201 100644
--- a/lib/yesno.c
+++ b/lib/yesno.c
@@ -1,6 +1,6 @@
 /* yesno.c -- read a yes/no response from stdin
 
-   Copyright (C) 1990, 1998, 2001, 2003-2022 Free Software Foundation, Inc.
+   Copyright (C) 1990, 1998, 2001, 2003-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/lib/yesno.h b/lib/yesno.h
index abcfaab76b..256c67d05d 100644
--- a/lib/yesno.h
+++ b/lib/yesno.h
@@ -1,5 +1,5 @@
 /* declare yesno
-   Copyright (C) 2004, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2004, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/m4/00gnulib.m4 b/m4/00gnulib.m4
index dea34e8341..7fe03e0b9c 100644
--- a/m4/00gnulib.m4
+++ b/m4/00gnulib.m4
@@ -1,5 +1,5 @@
 # 00gnulib.m4 serial 8
-dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/_Exit.m4 b/m4/_Exit.m4
index fac34da3c5..c4cf270eff 100644
--- a/m4/_Exit.m4
+++ b/m4/_Exit.m4
@@ -1,5 +1,5 @@
 # _Exit.m4 serial 2
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/__inline.m4 b/m4/__inline.m4
index fbe2098e86..acf8668bc5 100644
--- a/m4/__inline.m4
+++ b/m4/__inline.m4
@@ -1,5 +1,5 @@
 # Test for __inline keyword
-dnl Copyright 2017-2022 Free Software Foundation, Inc.
+dnl Copyright 2017-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/absolute-header.m4 b/m4/absolute-header.m4
index 67d6507c3e..e794764888 100644
--- a/m4/absolute-header.m4
+++ b/m4/absolute-header.m4
@@ -1,5 +1,5 @@
 # absolute-header.m4 serial 17
-dnl Copyright (C) 2006-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2006-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/accept4.m4 b/m4/accept4.m4
index c7dff4aeb2..8da104733b 100644
--- a/m4/accept4.m4
+++ b/m4/accept4.m4
@@ -1,5 +1,5 @@
 # accept4.m4 serial 3
-dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/access.m4 b/m4/access.m4
index 7ee801e31e..0c8064f2ff 100644
--- a/m4/access.m4
+++ b/m4/access.m4
@@ -1,5 +1,5 @@
 # access.m4 serial 1
-dnl Copyright (C) 2019-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2019-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/acl.m4 b/m4/acl.m4
index 8909442d7f..98362858ce 100644
--- a/m4/acl.m4
+++ b/m4/acl.m4
@@ -1,7 +1,7 @@
 # acl.m4 - check for access control list (ACL) primitives
 # serial 24
 
-# Copyright (C) 2002, 2004-2022 Free Software Foundation, Inc.
+# Copyright (C) 2002, 2004-2023 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
diff --git a/m4/acos.m4 b/m4/acos.m4
index fe742766fc..355c385aa1 100644
--- a/m4/acos.m4
+++ b/m4/acos.m4
@@ -1,5 +1,5 @@
 # acos.m4 serial 1
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/acosf.m4 b/m4/acosf.m4
index b528a8a1ab..f8874ce25a 100644
--- a/m4/acosf.m4
+++ b/m4/acosf.m4
@@ -1,5 +1,5 @@
 # acosf.m4 serial 3
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/acosl.m4 b/m4/acosl.m4
index f5c65e0298..1616e86d37 100644
--- a/m4/acosl.m4
+++ b/m4/acosl.m4
@@ -1,5 +1,5 @@
 # acosl.m4 serial 9
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/af_alg.m4 b/m4/af_alg.m4
index 9c7edf0f4a..f4c0d62460 100644
--- a/m4/af_alg.m4
+++ b/m4/af_alg.m4
@@ -1,5 +1,5 @@
 # af_alg.m4 serial 6
-dnl Copyright 2018-2022 Free Software Foundation, Inc.
+dnl Copyright 2018-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/alignalloc.m4 b/m4/alignalloc.m4
index 01627a085a..fa8fb7cd2b 100644
--- a/m4/alignalloc.m4
+++ b/m4/alignalloc.m4
@@ -1,4 +1,4 @@
-dnl Copyright 2022 Free Software Foundation, Inc.
+dnl Copyright 2022-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/aligned_alloc.m4 b/m4/aligned_alloc.m4
index 6dded96b48..31681ac52a 100644
--- a/m4/aligned_alloc.m4
+++ b/m4/aligned_alloc.m4
@@ -1,5 +1,5 @@
 # aligned_alloc.m4 serial 3
-dnl Copyright (C) 2020-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2020-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/alloca.m4 b/m4/alloca.m4
index dc6f47e330..c685fac918 100644
--- a/m4/alloca.m4
+++ b/m4/alloca.m4
@@ -1,5 +1,5 @@
 # alloca.m4 serial 21
-dnl Copyright (C) 2002-2004, 2006-2007, 2009-2022 Free Software Foundation,
+dnl Copyright (C) 2002-2004, 2006-2007, 2009-2023 Free Software Foundation,
 dnl Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
diff --git a/m4/alphasort.m4 b/m4/alphasort.m4
index 3be426db09..f3e9a84cbf 100644
--- a/m4/alphasort.m4
+++ b/m4/alphasort.m4
@@ -1,5 +1,5 @@
 # alphasort.m4 serial 2
-dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/ansi-c++.m4 b/m4/ansi-c++.m4
index aae4ffc41a..ea49b446a0 100644
--- a/m4/ansi-c++.m4
+++ b/m4/ansi-c++.m4
@@ -1,5 +1,5 @@
 # ansi-c++.m4 serial 12
-dnl Copyright (C) 2002-2003, 2005, 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2003, 2005, 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/arctwo.m4 b/m4/arctwo.m4
index 6c1635eff6..7792cb715a 100644
--- a/m4/arctwo.m4
+++ b/m4/arctwo.m4
@@ -1,5 +1,5 @@
 # arctwo.m4 serial 5
-dnl Copyright (C) 2005-2006, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2005-2006, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/argp.m4 b/m4/argp.m4
index a6f7b8ef9b..1f8578bd3a 100644
--- a/m4/argp.m4
+++ b/m4/argp.m4
@@ -1,5 +1,5 @@
 # argp.m4 serial 16
-dnl Copyright (C) 2003-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2003-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/argz.m4 b/m4/argz.m4
index fde99f6582..ed432322c1 100644
--- a/m4/argz.m4
+++ b/m4/argz.m4
@@ -1,6 +1,6 @@
 # Portability macros for glibc argz.                    -*- Autoconf -*-
 #
-#   Copyright (C) 2004-2022 Free Software Foundation, Inc.
+#   Copyright (C) 2004-2023 Free Software Foundation, Inc.
 #   Written by Gary V. Vaughan <gary@gnu.org>
 #
 # This file is free software; the Free Software Foundation gives
diff --git a/m4/arpa_inet_h.m4 b/m4/arpa_inet_h.m4
index 057e13fc42..fa5fe83178 100644
--- a/m4/arpa_inet_h.m4
+++ b/m4/arpa_inet_h.m4
@@ -1,5 +1,5 @@
 # arpa_inet_h.m4 serial 17
-dnl Copyright (C) 2006, 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2006, 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/asin.m4 b/m4/asin.m4
index 828f9d316e..16d4f38ac0 100644
--- a/m4/asin.m4
+++ b/m4/asin.m4
@@ -1,5 +1,5 @@
 # asin.m4 serial 1
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/asinf.m4 b/m4/asinf.m4
index cd0d182523..ca6634580f 100644
--- a/m4/asinf.m4
+++ b/m4/asinf.m4
@@ -1,5 +1,5 @@
 # asinf.m4 serial 3
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/asinl.m4 b/m4/asinl.m4
index 1b3c896a6e..079598a020 100644
--- a/m4/asinl.m4
+++ b/m4/asinl.m4
@@ -1,5 +1,5 @@
 # asinl.m4 serial 9
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/asm-underscore.m4 b/m4/asm-underscore.m4
index 950aa8d221..65ae55a75f 100644
--- a/m4/asm-underscore.m4
+++ b/m4/asm-underscore.m4
@@ -1,5 +1,5 @@
 # asm-underscore.m4 serial 5
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/assert.m4 b/m4/assert.m4
index e88979a9de..deeac708fd 100644
--- a/m4/assert.m4
+++ b/m4/assert.m4
@@ -1,6 +1,6 @@
 #serial 7
 
-# Copyright (C) 1998-1999, 2001, 2004, 2008-2022 Free Software Foundation, Inc.
+# Copyright (C) 1998-1999, 2001, 2004, 2008-2023 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
diff --git a/m4/assert_h.m4 b/m4/assert_h.m4
index e892ea2f01..6275f633a6 100644
--- a/m4/assert_h.m4
+++ b/m4/assert_h.m4
@@ -1,5 +1,5 @@
 # assert-h.m4
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/atan.m4 b/m4/atan.m4
index 6eb6aec4ae..49d2e216a8 100644
--- a/m4/atan.m4
+++ b/m4/atan.m4
@@ -1,5 +1,5 @@
 # atan.m4 serial 1
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/atan2.m4 b/m4/atan2.m4
index 881a128afb..09706e12dd 100644
--- a/m4/atan2.m4
+++ b/m4/atan2.m4
@@ -1,5 +1,5 @@
 # atan2.m4 serial 1
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/atan2f.m4 b/m4/atan2f.m4
index 17c1025f06..9da0e192d3 100644
--- a/m4/atan2f.m4
+++ b/m4/atan2f.m4
@@ -1,5 +1,5 @@
 # atan2f.m4 serial 3
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/atanf.m4 b/m4/atanf.m4
index 7895918ae1..1c963d3ab8 100644
--- a/m4/atanf.m4
+++ b/m4/atanf.m4
@@ -1,5 +1,5 @@
 # atanf.m4 serial 3
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/atanl.m4 b/m4/atanl.m4
index 1df35ac766..4683272d94 100644
--- a/m4/atanl.m4
+++ b/m4/atanl.m4
@@ -1,5 +1,5 @@
 # atanl.m4 serial 9
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/atexit.m4 b/m4/atexit.m4
index 61de4c611b..d2ba97e0c4 100644
--- a/m4/atexit.m4
+++ b/m4/atexit.m4
@@ -1,5 +1,5 @@
 # atexit.m4 serial 4
-dnl Copyright (C) 2002, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/atoll.m4 b/m4/atoll.m4
index 0c034248c7..8ab3bc9d44 100644
--- a/m4/atoll.m4
+++ b/m4/atoll.m4
@@ -1,5 +1,5 @@
 # atoll.m4 serial 3
-dnl Copyright (C) 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/autobuild.m4 b/m4/autobuild.m4
index bdb98f90e1..4068fd4768 100644
--- a/m4/autobuild.m4
+++ b/m4/autobuild.m4
@@ -1,5 +1,5 @@
 # autobuild.m4 serial 8
-dnl Copyright (C) 2004, 2006-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2004, 2006-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/backupfile.m4 b/m4/backupfile.m4
index 614721922c..ccc6d9b225 100644
--- a/m4/backupfile.m4
+++ b/m4/backupfile.m4
@@ -1,5 +1,5 @@
 # backupfile.m4 serial 14
-dnl Copyright (C) 2002-2006, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2006, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/base32.m4 b/m4/base32.m4
index dc8158e539..06dcdaf48a 100644
--- a/m4/base32.m4
+++ b/m4/base32.m4
@@ -1,5 +1,5 @@
 # base32.m4 serial 4
-dnl Copyright (C) 2004, 2006, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2004, 2006, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/base64.m4 b/m4/base64.m4
index fed3398e06..987930ab14 100644
--- a/m4/base64.m4
+++ b/m4/base64.m4
@@ -1,5 +1,5 @@
 # base64.m4 serial 4
-dnl Copyright (C) 2004, 2006, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2004, 2006, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/bison-i18n.m4 b/m4/bison-i18n.m4
index b937d48883..4ab5d80a82 100644
--- a/m4/bison-i18n.m4
+++ b/m4/bison-i18n.m4
@@ -1,5 +1,5 @@
 # bison-i18n.m4 serial 4
-dnl Copyright (C) 2005-2006, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2005-2006, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/bison.m4 b/m4/bison.m4
index f8120375e4..378ab3a0f1 100644
--- a/m4/bison.m4
+++ b/m4/bison.m4
@@ -1,6 +1,6 @@
 # serial 10
 
-# Copyright (C) 2002-2006, 2008-2022 Free Software Foundation, Inc.
+# Copyright (C) 2002-2006, 2008-2023 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
diff --git a/m4/btowc.m4 b/m4/btowc.m4
index 45a61f5ed0..77218a7d1c 100644
--- a/m4/btowc.m4
+++ b/m4/btowc.m4
@@ -1,5 +1,5 @@
 # btowc.m4 serial 12
-dnl Copyright (C) 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/builtin-expect.m4 b/m4/builtin-expect.m4
index b1fb12a3fb..531ed48af7 100644
--- a/m4/builtin-expect.m4
+++ b/m4/builtin-expect.m4
@@ -1,6 +1,6 @@
 dnl Check for __builtin_expect.
 
-dnl Copyright 2016-2022 Free Software Foundation, Inc.
+dnl Copyright 2016-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/byteswap.m4 b/m4/byteswap.m4
index 99aeb68727..8058d178bc 100644
--- a/m4/byteswap.m4
+++ b/m4/byteswap.m4
@@ -1,5 +1,5 @@
 # byteswap.m4 serial 5
-dnl Copyright (C) 2005, 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2005, 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/c-bool.m4 b/m4/c-bool.m4
index bb109b7796..f614371bb2 100644
--- a/m4/c-bool.m4
+++ b/m4/c-bool.m4
@@ -1,6 +1,6 @@
 # Check for bool that conforms to C2023.
 
-dnl Copyright 2022 Free Software Foundation, Inc.
+dnl Copyright 2022-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/c-stack.m4 b/m4/c-stack.m4
index da38c26c9b..5f6c5d2fb7 100644
--- a/m4/c-stack.m4
+++ b/m4/c-stack.m4
@@ -1,6 +1,6 @@
 # Check prerequisites for compiling lib/c-stack.c.
 
-# Copyright (C) 2002-2004, 2008-2022 Free Software Foundation, Inc.
+# Copyright (C) 2002-2004, 2008-2023 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
diff --git a/m4/c-strtod.m4 b/m4/c-strtod.m4
index 80e2fcc291..e92badad1c 100644
--- a/m4/c-strtod.m4
+++ b/m4/c-strtod.m4
@@ -1,6 +1,6 @@
 # c-strtod.m4 serial 18
 
-# Copyright (C) 2004-2006, 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2004-2006, 2009-2023 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
diff --git a/m4/c32rtomb.m4 b/m4/c32rtomb.m4
index dc25a7cad9..739d21d385 100644
--- a/m4/c32rtomb.m4
+++ b/m4/c32rtomb.m4
@@ -1,5 +1,5 @@
 # c32rtomb.m4 serial 3
-dnl Copyright (C) 2020-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2020-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/calloc.m4 b/m4/calloc.m4
index c01520e53d..23c0dd9f3f 100644
--- a/m4/calloc.m4
+++ b/m4/calloc.m4
@@ -1,6 +1,6 @@
 # calloc.m4 serial 29
 
-# Copyright (C) 2004-2022 Free Software Foundation, Inc.
+# Copyright (C) 2004-2023 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
diff --git a/m4/canon-host.m4 b/m4/canon-host.m4
index 71dadc9555..a063174ed5 100644
--- a/m4/canon-host.m4
+++ b/m4/canon-host.m4
@@ -1,5 +1,5 @@
 # canon-host.m4 serial 10
-dnl Copyright (C) 2002-2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/canonicalize.m4 b/m4/canonicalize.m4
index b55d5c06e2..03cb0aec93 100644
--- a/m4/canonicalize.m4
+++ b/m4/canonicalize.m4
@@ -1,6 +1,6 @@
 # canonicalize.m4 serial 37
 
-dnl Copyright (C) 2003-2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2003-2007, 2009-2023 Free Software Foundation, Inc.
 
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
diff --git a/m4/cbrt.m4 b/m4/cbrt.m4
index 533bda031b..61da0c0e00 100644
--- a/m4/cbrt.m4
+++ b/m4/cbrt.m4
@@ -1,5 +1,5 @@
 # cbrt.m4 serial 2
-dnl Copyright (C) 2012-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/cbrtf.m4 b/m4/cbrtf.m4
index 9855f320a5..0e876a01f9 100644
--- a/m4/cbrtf.m4
+++ b/m4/cbrtf.m4
@@ -1,5 +1,5 @@
 # cbrtf.m4 serial 4
-dnl Copyright (C) 2012-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/cbrtl-ieee.m4 b/m4/cbrtl-ieee.m4
index f444ee866a..26096a3088 100644
--- a/m4/cbrtl-ieee.m4
+++ b/m4/cbrtl-ieee.m4
@@ -1,5 +1,5 @@
 # cbrtl-ieee.m4 serial 1
-dnl Copyright (C) 2012-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/cbrtl.m4 b/m4/cbrtl.m4
index 6094ff6f2f..12b6ff6159 100644
--- a/m4/cbrtl.m4
+++ b/m4/cbrtl.m4
@@ -1,5 +1,5 @@
 # cbrtl.m4 serial 10
-dnl Copyright (C) 2012-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/ceil-ieee.m4 b/m4/ceil-ieee.m4
index 3a7e55de9a..edd2085e8e 100644
--- a/m4/ceil-ieee.m4
+++ b/m4/ceil-ieee.m4
@@ -1,5 +1,5 @@
 # ceil-ieee.m4 serial 1
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/ceil.m4 b/m4/ceil.m4
index 5aff637d3e..7ce6648fd8 100644
--- a/m4/ceil.m4
+++ b/m4/ceil.m4
@@ -1,5 +1,5 @@
 # ceil.m4 serial 15
-dnl Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/ceilf-ieee.m4 b/m4/ceilf-ieee.m4
index 220d201cee..1067ee6816 100644
--- a/m4/ceilf-ieee.m4
+++ b/m4/ceilf-ieee.m4
@@ -1,5 +1,5 @@
 # ceilf-ieee.m4 serial 1
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/ceilf.m4 b/m4/ceilf.m4
index ca961f6bfd..6979ce86e8 100644
--- a/m4/ceilf.m4
+++ b/m4/ceilf.m4
@@ -1,5 +1,5 @@
 # ceilf.m4 serial 19
-dnl Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/ceill-ieee.m4 b/m4/ceill-ieee.m4
index 7abe8f090f..76cee8c717 100644
--- a/m4/ceill-ieee.m4
+++ b/m4/ceill-ieee.m4
@@ -1,5 +1,5 @@
 # ceill-ieee.m4 serial 1
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/ceill.m4 b/m4/ceill.m4
index ceb22d5d72..7f41b3abce 100644
--- a/m4/ceill.m4
+++ b/m4/ceill.m4
@@ -1,5 +1,5 @@
 # ceill.m4 serial 22
-dnl Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/chdir-long.m4 b/m4/chdir-long.m4
index 4cadc3ff2a..4a92b30ede 100644
--- a/m4/chdir-long.m4
+++ b/m4/chdir-long.m4
@@ -6,7 +6,7 @@
 # never fails with ENAMETOOLONG.
 # Arrange to compile chdir-long.c only on systems that define PATH_MAX.
 
-dnl Copyright (C) 2004-2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2004-2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/check-math-lib.m4 b/m4/check-math-lib.m4
index 7eb42aff3a..4c300e2c52 100644
--- a/m4/check-math-lib.m4
+++ b/m4/check-math-lib.m4
@@ -1,5 +1,5 @@
 # check-math-lib.m4 serial 4
-dnl Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/chmod.m4 b/m4/chmod.m4
index 28dccb008d..ef2d0d7016 100644
--- a/m4/chmod.m4
+++ b/m4/chmod.m4
@@ -1,5 +1,5 @@
 # chmod.m4 serial 1
-dnl Copyright (C) 2004-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2004-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/chown.m4 b/m4/chown.m4
index 56dda0a632..3e05f85a2d 100644
--- a/m4/chown.m4
+++ b/m4/chown.m4
@@ -1,7 +1,7 @@
 # serial 35
 # Determine whether we need the chown wrapper.
 
-dnl Copyright (C) 1997-2001, 2003-2005, 2007, 2009-2022 Free Software
+dnl Copyright (C) 1997-2001, 2003-2005, 2007, 2009-2023 Free Software
 dnl Foundation, Inc.
 
 dnl This file is free software; the Free Software Foundation
diff --git a/m4/clock_time.m4 b/m4/clock_time.m4
index 2253553313..411e0710e7 100644
--- a/m4/clock_time.m4
+++ b/m4/clock_time.m4
@@ -1,5 +1,5 @@
 # clock_time.m4 serial 11
-dnl Copyright (C) 2002-2006, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2006, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/close.m4 b/m4/close.m4
index f95dbc9d97..9f95c670e5 100644
--- a/m4/close.m4
+++ b/m4/close.m4
@@ -1,5 +1,5 @@
 # close.m4 serial 9
-dnl Copyright (C) 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/closedir.m4 b/m4/closedir.m4
index cac29d6dc9..9c15354c3d 100644
--- a/m4/closedir.m4
+++ b/m4/closedir.m4
@@ -1,5 +1,5 @@
 # closedir.m4 serial 6
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/codeset.m4 b/m4/codeset.m4
index eb7326013d..5804f472e9 100644
--- a/m4/codeset.m4
+++ b/m4/codeset.m4
@@ -1,5 +1,5 @@
 # codeset.m4 serial 5 (gettext-0.18.2)
-dnl Copyright (C) 2000-2002, 2006, 2008-2014, 2016, 2019-2022 Free Software
+dnl Copyright (C) 2000-2002, 2006, 2008-2014, 2016, 2019-2023 Free Software
 dnl Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
diff --git a/m4/cond.m4 b/m4/cond.m4
index 4ab9e3f3b0..2a3d7a4bfa 100644
--- a/m4/cond.m4
+++ b/m4/cond.m4
@@ -1,5 +1,5 @@
 # cond.m4 serial 2
-dnl Copyright (C) 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/config-h.m4 b/m4/config-h.m4
index 803888aed1..185a3e4254 100644
--- a/m4/config-h.m4
+++ b/m4/config-h.m4
@@ -1,6 +1,6 @@
 # Say that -DHAVE_CONFIG_H is not needed.
 
-dnl Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/configmake.m4 b/m4/configmake.m4
index c3a088bfd0..7cd7cf5fb8 100644
--- a/m4/configmake.m4
+++ b/m4/configmake.m4
@@ -1,5 +1,5 @@
 # configmake.m4 serial 4
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/copy-file-range.m4 b/m4/copy-file-range.m4
index 1b8b9d8858..d41f2c4831 100644
--- a/m4/copy-file-range.m4
+++ b/m4/copy-file-range.m4
@@ -1,5 +1,5 @@
 # copy-file-range.m4
-dnl Copyright 2019-2022 Free Software Foundation, Inc.
+dnl Copyright 2019-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/copy-file.m4 b/m4/copy-file.m4
index 0160e2f961..cfe510137a 100644
--- a/m4/copy-file.m4
+++ b/m4/copy-file.m4
@@ -1,5 +1,5 @@
 # copy-file.m4 serial 5
-dnl Copyright (C) 2003, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2003, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/copysign.m4 b/m4/copysign.m4
index c66cc7a7fc..1a61734988 100644
--- a/m4/copysign.m4
+++ b/m4/copysign.m4
@@ -1,5 +1,5 @@
 # copysign.m4 serial 1
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/copysignf.m4 b/m4/copysignf.m4
index a004676578..b248da8589 100644
--- a/m4/copysignf.m4
+++ b/m4/copysignf.m4
@@ -1,5 +1,5 @@
 # copysignf.m4 serial 4
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/copysignl.m4 b/m4/copysignl.m4
index b35f238dd6..3c688d85fb 100644
--- a/m4/copysignl.m4
+++ b/m4/copysignl.m4
@@ -1,5 +1,5 @@
 # copysignl.m4 serial 3
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/cos.m4 b/m4/cos.m4
index 4bc84bc854..80fb9ceaaa 100644
--- a/m4/cos.m4
+++ b/m4/cos.m4
@@ -1,5 +1,5 @@
 # cos.m4 serial 1
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/cosf.m4 b/m4/cosf.m4
index b335062fb9..344cc01534 100644
--- a/m4/cosf.m4
+++ b/m4/cosf.m4
@@ -1,5 +1,5 @@
 # cosf.m4 serial 3
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/cosh.m4 b/m4/cosh.m4
index 64c4ea91d7..5c4d87aab8 100644
--- a/m4/cosh.m4
+++ b/m4/cosh.m4
@@ -1,5 +1,5 @@
 # cosh.m4 serial 1
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/coshf.m4 b/m4/coshf.m4
index f3545275bb..fac31d4196 100644
--- a/m4/coshf.m4
+++ b/m4/coshf.m4
@@ -1,5 +1,5 @@
 # coshf.m4 serial 3
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/cosl.m4 b/m4/cosl.m4
index 1208d04908..2f0e65a464 100644
--- a/m4/cosl.m4
+++ b/m4/cosl.m4
@@ -1,5 +1,5 @@
 # cosl.m4 serial 9
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/creat.m4 b/m4/creat.m4
index 3ce8ef0d97..0c2207cadd 100644
--- a/m4/creat.m4
+++ b/m4/creat.m4
@@ -1,5 +1,5 @@
 # creat.m4 serial 1
-dnl Copyright (C) 2019-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2019-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/csharp.m4 b/m4/csharp.m4
index 339302dfca..cc3dece76a 100644
--- a/m4/csharp.m4
+++ b/m4/csharp.m4
@@ -1,5 +1,5 @@
 # csharp.m4 serial 4
-dnl Copyright (C) 2004-2005, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2004-2005, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/csharpcomp.m4 b/m4/csharpcomp.m4
index 540f53bb67..d009dbf41d 100644
--- a/m4/csharpcomp.m4
+++ b/m4/csharpcomp.m4
@@ -1,5 +1,5 @@
 # csharpcomp.m4 serial 9
-dnl Copyright (C) 2003-2005, 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2003-2005, 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/csharpexec.m4 b/m4/csharpexec.m4
index 66c28c532a..3c0ac492e1 100644
--- a/m4/csharpexec.m4
+++ b/m4/csharpexec.m4
@@ -1,5 +1,5 @@
 # csharpexec.m4 serial 8
-dnl Copyright (C) 2003-2005, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2003-2005, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/ctime.m4 b/m4/ctime.m4
index 2e7ecdd74b..08aeb67454 100644
--- a/m4/ctime.m4
+++ b/m4/ctime.m4
@@ -1,5 +1,5 @@
 # ctime.m4 serial 2
-dnl Copyright (C) 2017-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2017-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/ctype_h.m4 b/m4/ctype_h.m4
index 6f420de3f9..219f2ed0ab 100644
--- a/m4/ctype_h.m4
+++ b/m4/ctype_h.m4
@@ -1,5 +1,5 @@
 # ctype_h.m4 serial 9
-dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/curses.m4 b/m4/curses.m4
index 0a508c0f12..4b1ad8ae7a 100644
--- a/m4/curses.m4
+++ b/m4/curses.m4
@@ -1,5 +1,5 @@
 # curses.m4 serial 1
-dnl Copyright (C) 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/cycle-check.m4 b/m4/cycle-check.m4
index 4ad8739f8f..eaa3e773d5 100644
--- a/m4/cycle-check.m4
+++ b/m4/cycle-check.m4
@@ -1,5 +1,5 @@
 #serial 7
-dnl Copyright (C) 2005-2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2005-2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/d-ino.m4 b/m4/d-ino.m4
index daefce9eba..7305fce4be 100644
--- a/m4/d-ino.m4
+++ b/m4/d-ino.m4
@@ -5,7 +5,7 @@ dnl
 dnl Check whether struct dirent has a member named d_ino.
 dnl
 
-# Copyright (C) 1997, 1999-2001, 2003-2004, 2006-2007, 2009-2022 Free Software
+# Copyright (C) 1997, 1999-2001, 2003-2004, 2006-2007, 2009-2023 Free Software
 # Foundation, Inc.
 
 # This file is free software; the Free Software Foundation
diff --git a/m4/d-type.m4 b/m4/d-type.m4
index b8858b1918..3f63bbe78e 100644
--- a/m4/d-type.m4
+++ b/m4/d-type.m4
@@ -5,7 +5,7 @@ dnl
 dnl Check whether struct dirent has a member named d_type.
 dnl
 
-# Copyright (C) 1997, 1999-2004, 2006, 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 1997, 1999-2004, 2006, 2009-2023 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
diff --git a/m4/dirent-safer.m4 b/m4/dirent-safer.m4
index f1b8140cf1..422ce69b40 100644
--- a/m4/dirent-safer.m4
+++ b/m4/dirent-safer.m4
@@ -1,5 +1,5 @@
 #serial 2
-dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/dirent_h.m4 b/m4/dirent_h.m4
index ddaca1680d..2a232a7622 100644
--- a/m4/dirent_h.m4
+++ b/m4/dirent_h.m4
@@ -1,5 +1,5 @@
 # dirent_h.m4 serial 19
-dnl Copyright (C) 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/dirfd.m4 b/m4/dirfd.m4
index 92001700ef..2135535042 100644
--- a/m4/dirfd.m4
+++ b/m4/dirfd.m4
@@ -2,7 +2,7 @@
 
 dnl Find out how to get the file descriptor associated with an open DIR*.
 
-# Copyright (C) 2001-2006, 2008-2022 Free Software Foundation, Inc.
+# Copyright (C) 2001-2006, 2008-2023 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
diff --git a/m4/double-slash-root.m4 b/m4/double-slash-root.m4
index 09ff5f0d17..1776e5eb75 100644
--- a/m4/double-slash-root.m4
+++ b/m4/double-slash-root.m4
@@ -1,5 +1,5 @@
 # double-slash-root.m4 serial 4   -*- Autoconf -*-
-dnl Copyright (C) 2006, 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2006, 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/dprintf-posix.m4 b/m4/dprintf-posix.m4
index ea08d51a63..4efd46cc7d 100644
--- a/m4/dprintf-posix.m4
+++ b/m4/dprintf-posix.m4
@@ -1,5 +1,5 @@
 # dprintf-posix.m4 serial 2
-dnl Copyright (C) 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/dprintf.m4 b/m4/dprintf.m4
index 5ff96acbb6..7e3ea0bbf6 100644
--- a/m4/dprintf.m4
+++ b/m4/dprintf.m4
@@ -1,5 +1,5 @@
 # dprintf.m4 serial 1
-dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/dup.m4 b/m4/dup.m4
index 3109a651ca..fc41c99c3e 100644
--- a/m4/dup.m4
+++ b/m4/dup.m4
@@ -1,5 +1,5 @@
 # dup.m4 serial 7
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/dup2.m4 b/m4/dup2.m4
index 7e777cdee6..e1cc73e18d 100644
--- a/m4/dup2.m4
+++ b/m4/dup2.m4
@@ -1,5 +1,5 @@
 #serial 27
-dnl Copyright (C) 2002, 2005, 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002, 2005, 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/dup3.m4 b/m4/dup3.m4
index a8354926d5..93a1d78509 100644
--- a/m4/dup3.m4
+++ b/m4/dup3.m4
@@ -1,5 +1,5 @@
 # dup3.m4 serial 5
-dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/duplocale.m4 b/m4/duplocale.m4
index d2c072db03..488094b398 100644
--- a/m4/duplocale.m4
+++ b/m4/duplocale.m4
@@ -1,5 +1,5 @@
 # duplocale.m4 serial 12
-dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/eaccess.m4 b/m4/eaccess.m4
index 6ab3d50992..19134c08ba 100644
--- a/m4/eaccess.m4
+++ b/m4/eaccess.m4
@@ -1,5 +1,5 @@
 # eaccess.m4 serial 2
-dnl Copyright (C) 2003, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2003, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/eealloc.m4 b/m4/eealloc.m4
index a6aa2f88d0..cb3e08fe53 100644
--- a/m4/eealloc.m4
+++ b/m4/eealloc.m4
@@ -1,5 +1,5 @@
 # eealloc.m4 serial 3
-dnl Copyright (C) 2003, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2003, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/environ.m4 b/m4/environ.m4
index 583dac3932..741dfc56a1 100644
--- a/m4/environ.m4
+++ b/m4/environ.m4
@@ -1,5 +1,5 @@
 # environ.m4 serial 8
-dnl Copyright (C) 2001-2004, 2006-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2001-2004, 2006-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/errno_h.m4 b/m4/errno_h.m4
index 4be9780a7e..4c70d22528 100644
--- a/m4/errno_h.m4
+++ b/m4/errno_h.m4
@@ -1,5 +1,5 @@
 # errno_h.m4 serial 14
-dnl Copyright (C) 2004, 2006, 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2004, 2006, 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/error.m4 b/m4/error.m4
index 7a103446be..8cc75dffdf 100644
--- a/m4/error.m4
+++ b/m4/error.m4
@@ -1,6 +1,6 @@
 #serial 15
 
-# Copyright (C) 1996-1998, 2001-2004, 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 1996-1998, 2001-2004, 2009-2023 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
diff --git a/m4/euidaccess.m4 b/m4/euidaccess.m4
index 04f66f9d5d..0dc757820e 100644
--- a/m4/euidaccess.m4
+++ b/m4/euidaccess.m4
@@ -1,5 +1,5 @@
 # euidaccess.m4 serial 15
-dnl Copyright (C) 2002-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/execinfo.m4 b/m4/execinfo.m4
index b370e4dfdf..269e697a45 100644
--- a/m4/execinfo.m4
+++ b/m4/execinfo.m4
@@ -1,6 +1,6 @@
 # Check for GNU-style execinfo.h.
 
-dnl Copyright 2012-2022 Free Software Foundation, Inc.
+dnl Copyright 2012-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/execl.m4 b/m4/execl.m4
index f3d4f75b25..4ca7daf6f1 100644
--- a/m4/execl.m4
+++ b/m4/execl.m4
@@ -1,5 +1,5 @@
 # execl.m4 serial 1
-dnl Copyright (C) 2020-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2020-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/execle.m4 b/m4/execle.m4
index a7ee805661..d72f0eb90c 100644
--- a/m4/execle.m4
+++ b/m4/execle.m4
@@ -1,5 +1,5 @@
 # execle.m4 serial 1
-dnl Copyright (C) 2020-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2020-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/execlp.m4 b/m4/execlp.m4
index c143c669bf..ea60f09009 100644
--- a/m4/execlp.m4
+++ b/m4/execlp.m4
@@ -1,5 +1,5 @@
 # execlp.m4 serial 1
-dnl Copyright (C) 2020-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2020-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/execute.m4 b/m4/execute.m4
index 212274546f..b2cbd7200c 100644
--- a/m4/execute.m4
+++ b/m4/execute.m4
@@ -1,5 +1,5 @@
 # execute.m4 serial 5
-dnl Copyright (C) 2003, 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2003, 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/execv.m4 b/m4/execv.m4
index 6bb4957d08..5dbacf62c6 100644
--- a/m4/execv.m4
+++ b/m4/execv.m4
@@ -1,5 +1,5 @@
 # execv.m4 serial 1
-dnl Copyright (C) 2020-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2020-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/execve.m4 b/m4/execve.m4
index 86b5926b87..c94aacb615 100644
--- a/m4/execve.m4
+++ b/m4/execve.m4
@@ -1,5 +1,5 @@
 # execve.m4 serial 1
-dnl Copyright (C) 2020-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2020-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/execvp.m4 b/m4/execvp.m4
index a5e6897a73..69d11caebb 100644
--- a/m4/execvp.m4
+++ b/m4/execvp.m4
@@ -1,5 +1,5 @@
 # execvp.m4 serial 1
-dnl Copyright (C) 2020-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2020-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/execvpe.m4 b/m4/execvpe.m4
index bdb3114c6b..5ddc45d509 100644
--- a/m4/execvpe.m4
+++ b/m4/execvpe.m4
@@ -1,5 +1,5 @@
 # execvpe.m4 serial 1
-dnl Copyright (C) 2020-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2020-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/exp.m4 b/m4/exp.m4
index ddac4d4f98..9c8f8ffb5e 100644
--- a/m4/exp.m4
+++ b/m4/exp.m4
@@ -1,5 +1,5 @@
 # exp.m4 serial 1
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/exp2.m4 b/m4/exp2.m4
index 846f76f320..3b71f96bb5 100644
--- a/m4/exp2.m4
+++ b/m4/exp2.m4
@@ -1,5 +1,5 @@
 # exp2.m4 serial 3
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/exp2f.m4 b/m4/exp2f.m4
index 3105d0e780..daadfbe4c0 100644
--- a/m4/exp2f.m4
+++ b/m4/exp2f.m4
@@ -1,5 +1,5 @@
 # exp2f.m4 serial 1
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/exp2l-ieee.m4 b/m4/exp2l-ieee.m4
index 05e14d4937..259cfc0da4 100644
--- a/m4/exp2l-ieee.m4
+++ b/m4/exp2l-ieee.m4
@@ -1,5 +1,5 @@
 # exp2l-ieee.m4 serial 1
-dnl Copyright (C) 2012-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/exp2l.m4 b/m4/exp2l.m4
index 13dedd2dc4..abf9397a39 100644
--- a/m4/exp2l.m4
+++ b/m4/exp2l.m4
@@ -1,5 +1,5 @@
 # exp2l.m4 serial 10
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/expf.m4 b/m4/expf.m4
index 4f0e3bd76a..7ee2d20540 100644
--- a/m4/expf.m4
+++ b/m4/expf.m4
@@ -1,5 +1,5 @@
 # expf.m4 serial 3
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/expl.m4 b/m4/expl.m4
index bd4e7cdc63..b5720798bb 100644
--- a/m4/expl.m4
+++ b/m4/expl.m4
@@ -1,5 +1,5 @@
 # expl.m4 serial 18
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/explicit_bzero.m4 b/m4/explicit_bzero.m4
index 6c0d4c2336..c6c2956cb1 100644
--- a/m4/explicit_bzero.m4
+++ b/m4/explicit_bzero.m4
@@ -1,4 +1,4 @@
-dnl Copyright 2017-2022 Free Software Foundation, Inc.
+dnl Copyright 2017-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/expm1-ieee.m4 b/m4/expm1-ieee.m4
index 2c7b16a33f..a083c1cd1f 100644
--- a/m4/expm1-ieee.m4
+++ b/m4/expm1-ieee.m4
@@ -1,5 +1,5 @@
 # expm1-ieee.m4 serial 1
-dnl Copyright (C) 2012-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/expm1.m4 b/m4/expm1.m4
index 11aff6fe0b..2a3e291c50 100644
--- a/m4/expm1.m4
+++ b/m4/expm1.m4
@@ -1,5 +1,5 @@
 # expm1.m4 serial 9
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/expm1f-ieee.m4 b/m4/expm1f-ieee.m4
index 007841855e..4a7d33e1a3 100644
--- a/m4/expm1f-ieee.m4
+++ b/m4/expm1f-ieee.m4
@@ -1,5 +1,5 @@
 # expm1f-ieee.m4 serial 1
-dnl Copyright (C) 2021-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2021-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/expm1f.m4 b/m4/expm1f.m4
index f34eef6b40..7072af81a7 100644
--- a/m4/expm1f.m4
+++ b/m4/expm1f.m4
@@ -1,5 +1,5 @@
 # expm1f.m4 serial 4
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/expm1l.m4 b/m4/expm1l.m4
index 212ec67f1f..62b9614583 100644
--- a/m4/expm1l.m4
+++ b/m4/expm1l.m4
@@ -1,5 +1,5 @@
 # expm1l.m4 serial 9
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/exponentd.m4 b/m4/exponentd.m4
index 83ac08bf26..2ef46437de 100644
--- a/m4/exponentd.m4
+++ b/m4/exponentd.m4
@@ -1,5 +1,5 @@
 # exponentd.m4 serial 3
-dnl Copyright (C) 2007-2008, 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2008, 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/exponentf.m4 b/m4/exponentf.m4
index 32fdb6a252..f6395f23f2 100644
--- a/m4/exponentf.m4
+++ b/m4/exponentf.m4
@@ -1,5 +1,5 @@
 # exponentf.m4 serial 2
-dnl Copyright (C) 2007-2008, 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2008, 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/exponentl.m4 b/m4/exponentl.m4
index 653ad5a945..e1fa5c48cc 100644
--- a/m4/exponentl.m4
+++ b/m4/exponentl.m4
@@ -1,5 +1,5 @@
 # exponentl.m4 serial 5
-dnl Copyright (C) 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/extensions.m4 b/m4/extensions.m4
index fc0d66be1a..5336b8daf7 100644
--- a/m4/extensions.m4
+++ b/m4/extensions.m4
@@ -1,7 +1,7 @@
 # serial 23  -*- Autoconf -*-
 # Enable extensions on systems that normally disable them.
 
-# Copyright (C) 2003, 2006-2022 Free Software Foundation, Inc.
+# Copyright (C) 2003, 2006-2023 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
diff --git a/m4/extern-inline.m4 b/m4/extern-inline.m4
index 8a12bddd57..c001b1cff7 100644
--- a/m4/extern-inline.m4
+++ b/m4/extern-inline.m4
@@ -1,6 +1,6 @@
 dnl 'extern inline' a la ISO C99.
 
-dnl Copyright 2012-2022 Free Software Foundation, Inc.
+dnl Copyright 2012-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/fabs.m4 b/m4/fabs.m4
index 98d0c8d719..9505599622 100644
--- a/m4/fabs.m4
+++ b/m4/fabs.m4
@@ -1,5 +1,5 @@
 # fabs.m4 serial 1
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/fabsf.m4 b/m4/fabsf.m4
index 01aa2386ae..9066b4f177 100644
--- a/m4/fabsf.m4
+++ b/m4/fabsf.m4
@@ -1,5 +1,5 @@
 # fabsf.m4 serial 3
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/fabsl.m4 b/m4/fabsl.m4
index bc67e23ba4..ecdb3ce8fb 100644
--- a/m4/fabsl.m4
+++ b/m4/fabsl.m4
@@ -1,5 +1,5 @@
 # fabsl.m4 serial 3
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/faccessat.m4 b/m4/faccessat.m4
index 0ba5b3b687..934c1f4154 100644
--- a/m4/faccessat.m4
+++ b/m4/faccessat.m4
@@ -1,7 +1,7 @@
 # serial 10
 # See if we need to provide faccessat replacement.
 
-dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/fatal-signal.m4 b/m4/fatal-signal.m4
index 4405b2d781..0c29bd48e0 100644
--- a/m4/fatal-signal.m4
+++ b/m4/fatal-signal.m4
@@ -1,5 +1,5 @@
 # fatal-signal.m4 serial 9
-dnl Copyright (C) 2003-2004, 2006, 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2003-2004, 2006, 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/fbufmode.m4 b/m4/fbufmode.m4
index 76c780ff5e..843a51b2ff 100644
--- a/m4/fbufmode.m4
+++ b/m4/fbufmode.m4
@@ -1,5 +1,5 @@
 # fbufmode.m4 serial 3
-dnl Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/fchdir.m4 b/m4/fchdir.m4
index f85549a3ed..45fa11a683 100644
--- a/m4/fchdir.m4
+++ b/m4/fchdir.m4
@@ -1,5 +1,5 @@
 # fchdir.m4 serial 27
-dnl Copyright (C) 2006-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2006-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/fchmodat.m4 b/m4/fchmodat.m4
index f743ce1b02..7a3ee863e3 100644
--- a/m4/fchmodat.m4
+++ b/m4/fchmodat.m4
@@ -1,5 +1,5 @@
 # fchmodat.m4 serial 7
-dnl Copyright (C) 2004-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2004-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/fchownat.m4 b/m4/fchownat.m4
index 3d20d5335a..bb8c744c38 100644
--- a/m4/fchownat.m4
+++ b/m4/fchownat.m4
@@ -1,5 +1,5 @@
 # fchownat.m4 serial 7
-dnl Copyright (C) 2004-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2004-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/fclose.m4 b/m4/fclose.m4
index 1608ad94b1..9751b6d876 100644
--- a/m4/fclose.m4
+++ b/m4/fclose.m4
@@ -1,5 +1,5 @@
 # fclose.m4 serial 9
-dnl Copyright (C) 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/fcntl-o.m4 b/m4/fcntl-o.m4
index 4dcde9e062..59d558bdd4 100644
--- a/m4/fcntl-o.m4
+++ b/m4/fcntl-o.m4
@@ -1,5 +1,5 @@
 # fcntl-o.m4 serial 7
-dnl Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/fcntl-safer.m4 b/m4/fcntl-safer.m4
index 55e7f9e0d6..e6097f055f 100644
--- a/m4/fcntl-safer.m4
+++ b/m4/fcntl-safer.m4
@@ -1,5 +1,5 @@
 #serial 9
-dnl Copyright (C) 2005-2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2005-2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/fcntl.m4 b/m4/fcntl.m4
index 428e5709d3..524a99af80 100644
--- a/m4/fcntl.m4
+++ b/m4/fcntl.m4
@@ -1,5 +1,5 @@
 # fcntl.m4 serial 11
-dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/fcntl_h.m4 b/m4/fcntl_h.m4
index 267f98bf52..68f4e64802 100644
--- a/m4/fcntl_h.m4
+++ b/m4/fcntl_h.m4
@@ -1,6 +1,6 @@
 # serial 20
 # Configure fcntl.h.
-dnl Copyright (C) 2006-2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2006-2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/fdatasync.m4 b/m4/fdatasync.m4
index 083537aa9c..acd71a1a56 100644
--- a/m4/fdatasync.m4
+++ b/m4/fdatasync.m4
@@ -1,5 +1,5 @@
 # fdatasync.m4 serial 6
-dnl Copyright (C) 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/fdopen.m4 b/m4/fdopen.m4
index 32e0e1d834..6b3909b8fc 100644
--- a/m4/fdopen.m4
+++ b/m4/fdopen.m4
@@ -1,5 +1,5 @@
 # fdopen.m4 serial 5
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/fdopendir.m4 b/m4/fdopendir.m4
index 3001608408..2c97539711 100644
--- a/m4/fdopendir.m4
+++ b/m4/fdopendir.m4
@@ -1,7 +1,7 @@
 # serial 14
 # See if we need to provide fdopendir.
 
-dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/fegetround.m4 b/m4/fegetround.m4
index 9c13a1bf32..cee7bba638 100644
--- a/m4/fegetround.m4
+++ b/m4/fegetround.m4
@@ -1,5 +1,5 @@
 # fegetround.m4 serial 1
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/fflush.m4 b/m4/fflush.m4
index e36f90ee86..3e3c8903aa 100644
--- a/m4/fflush.m4
+++ b/m4/fflush.m4
@@ -1,6 +1,6 @@
 # fflush.m4 serial 18
 
-# Copyright (C) 2007-2022 Free Software Foundation, Inc.
+# Copyright (C) 2007-2023 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
diff --git a/m4/ffs.m4 b/m4/ffs.m4
index 8fa4fc22e6..3bc6f8eca8 100644
--- a/m4/ffs.m4
+++ b/m4/ffs.m4
@@ -1,5 +1,5 @@
 # ffs.m4 serial 5
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/ffsl.m4 b/m4/ffsl.m4
index 4b7aa2fe17..1d840e5b80 100644
--- a/m4/ffsl.m4
+++ b/m4/ffsl.m4
@@ -1,5 +1,5 @@
 # ffsl.m4 serial 2
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/ffsll.m4 b/m4/ffsll.m4
index 7e53295b60..8414272c6e 100644
--- a/m4/ffsll.m4
+++ b/m4/ffsll.m4
@@ -1,5 +1,5 @@
 # ffsll.m4 serial 3
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/fileblocks.m4 b/m4/fileblocks.m4
index c17a1baa3c..953530b271 100644
--- a/m4/fileblocks.m4
+++ b/m4/fileblocks.m4
@@ -1,5 +1,5 @@
 # fileblocks.m4 serial 6
-dnl Copyright (C) 2002, 2005-2006, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002, 2005-2006, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/filemode.m4 b/m4/filemode.m4
index 902c35e359..3cafc5cd1e 100644
--- a/m4/filemode.m4
+++ b/m4/filemode.m4
@@ -1,5 +1,5 @@
 # filemode.m4 serial 9
-dnl Copyright (C) 2002, 2005-2006, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002, 2005-2006, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/filenamecat.m4 b/m4/filenamecat.m4
index 4546b8329d..d09b125cb0 100644
--- a/m4/filenamecat.m4
+++ b/m4/filenamecat.m4
@@ -1,5 +1,5 @@
 # filenamecat.m4 serial 11
-dnl Copyright (C) 2002-2006, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2006, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/findprog-in.m4 b/m4/findprog-in.m4
index 5a295e23dd..394f79a518 100644
--- a/m4/findprog-in.m4
+++ b/m4/findprog-in.m4
@@ -1,5 +1,5 @@
 # findprog-in.m4 serial 1
-dnl Copyright (C) 2003, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2003, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/findprog.m4 b/m4/findprog.m4
index 543a244d66..eb2032385c 100644
--- a/m4/findprog.m4
+++ b/m4/findprog.m4
@@ -1,5 +1,5 @@
 # findprog.m4 serial 3
-dnl Copyright (C) 2003, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2003, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/flexmember.m4 b/m4/flexmember.m4
index 3b4237e9f7..13f7e870d3 100644
--- a/m4/flexmember.m4
+++ b/m4/flexmember.m4
@@ -1,7 +1,7 @@
 # serial 5
 # Check for flexible array member support.
 
-# Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
diff --git a/m4/float_h.m4 b/m4/float_h.m4
index 0e84572616..2f0c9c4ee9 100644
--- a/m4/float_h.m4
+++ b/m4/float_h.m4
@@ -1,5 +1,5 @@
 # float_h.m4 serial 13
-dnl Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/flock.m4 b/m4/flock.m4
index 655395e90c..e547876695 100644
--- a/m4/flock.m4
+++ b/m4/flock.m4
@@ -1,5 +1,5 @@
 # flock.m4 serial 4
-dnl Copyright (C) 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/floor-ieee.m4 b/m4/floor-ieee.m4
index 9ae569c79c..9be545cb82 100644
--- a/m4/floor-ieee.m4
+++ b/m4/floor-ieee.m4
@@ -1,5 +1,5 @@
 # floor-ieee.m4 serial 1
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/floor.m4 b/m4/floor.m4
index 727a426c95..63e56d3956 100644
--- a/m4/floor.m4
+++ b/m4/floor.m4
@@ -1,5 +1,5 @@
 # floor.m4 serial 14
-dnl Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/floorf-ieee.m4 b/m4/floorf-ieee.m4
index a58871a495..6df20110f2 100644
--- a/m4/floorf-ieee.m4
+++ b/m4/floorf-ieee.m4
@@ -1,5 +1,5 @@
 # floorf-ieee.m4 serial 1
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/floorf.m4 b/m4/floorf.m4
index e8f290b0b1..c49ffa6bec 100644
--- a/m4/floorf.m4
+++ b/m4/floorf.m4
@@ -1,5 +1,5 @@
 # floorf.m4 serial 18
-dnl Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/floorl.m4 b/m4/floorl.m4
index 3ece867f65..63c75f2b93 100644
--- a/m4/floorl.m4
+++ b/m4/floorl.m4
@@ -1,5 +1,5 @@
 # floorl.m4 serial 11
-dnl Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/fma.m4 b/m4/fma.m4
index eedc26ab26..4fce225a30 100644
--- a/m4/fma.m4
+++ b/m4/fma.m4
@@ -1,5 +1,5 @@
 # fma.m4 serial 4
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/fmaf.m4 b/m4/fmaf.m4
index 7748f4e462..69e66747f5 100644
--- a/m4/fmaf.m4
+++ b/m4/fmaf.m4
@@ -1,5 +1,5 @@
 # fmaf.m4 serial 6
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/fmal.m4 b/m4/fmal.m4
index 9d78a2817b..3ed7c2e979 100644
--- a/m4/fmal.m4
+++ b/m4/fmal.m4
@@ -1,5 +1,5 @@
 # fmal.m4 serial 8
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/fmod-ieee.m4 b/m4/fmod-ieee.m4
index ef4b8c5694..37c750a630 100644
--- a/m4/fmod-ieee.m4
+++ b/m4/fmod-ieee.m4
@@ -1,5 +1,5 @@
 # fmod-ieee.m4 serial 1
-dnl Copyright (C) 2012-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/fmod.m4 b/m4/fmod.m4
index 55a56809ff..865374001f 100644
--- a/m4/fmod.m4
+++ b/m4/fmod.m4
@@ -1,5 +1,5 @@
 # fmod.m4 serial 9
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/fmodf-ieee.m4 b/m4/fmodf-ieee.m4
index 648da93455..2ab89a933e 100644
--- a/m4/fmodf-ieee.m4
+++ b/m4/fmodf-ieee.m4
@@ -1,5 +1,5 @@
 # fmodf-ieee.m4 serial 1
-dnl Copyright (C) 2012-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/fmodf.m4 b/m4/fmodf.m4
index 1e71be1c43..2dd7fbfc7e 100644
--- a/m4/fmodf.m4
+++ b/m4/fmodf.m4
@@ -1,5 +1,5 @@
 # fmodf.m4 serial 11
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/fmodl-ieee.m4 b/m4/fmodl-ieee.m4
index 48b58bcd92..736792998f 100644
--- a/m4/fmodl-ieee.m4
+++ b/m4/fmodl-ieee.m4
@@ -1,5 +1,5 @@
 # fmodl-ieee.m4 serial 1
-dnl Copyright (C) 2012-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/fmodl.m4 b/m4/fmodl.m4
index cb3ab57eab..51fae629cf 100644
--- a/m4/fmodl.m4
+++ b/m4/fmodl.m4
@@ -1,5 +1,5 @@
 # fmodl.m4 serial 11
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/fnmatch.m4 b/m4/fnmatch.m4
index 9c60559574..e6f39f991f 100644
--- a/m4/fnmatch.m4
+++ b/m4/fnmatch.m4
@@ -1,6 +1,6 @@
 # Check for fnmatch - serial 15.  -*- coding: utf-8 -*-
 
-# Copyright (C) 2000-2007, 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2000-2007, 2009-2023 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
diff --git a/m4/fnmatch_h.m4 b/m4/fnmatch_h.m4
index ae5cd869cf..40a62b6a79 100644
--- a/m4/fnmatch_h.m4
+++ b/m4/fnmatch_h.m4
@@ -1,5 +1,5 @@
 # fnmatch_h.m4 serial 8
-dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/fopen.m4 b/m4/fopen.m4
index 50767f8288..9c39ff721b 100644
--- a/m4/fopen.m4
+++ b/m4/fopen.m4
@@ -1,5 +1,5 @@
 # fopen.m4 serial 13
-dnl Copyright (C) 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/fpending.m4 b/m4/fpending.m4
index de4eb7f9b3..6991f81066 100644
--- a/m4/fpending.m4
+++ b/m4/fpending.m4
@@ -1,6 +1,6 @@
 # serial 23
 
-# Copyright (C) 2000-2001, 2004-2022 Free Software Foundation, Inc.
+# Copyright (C) 2000-2001, 2004-2023 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
diff --git a/m4/fpieee.m4 b/m4/fpieee.m4
index c0c23e9565..706b33141d 100644
--- a/m4/fpieee.m4
+++ b/m4/fpieee.m4
@@ -1,5 +1,5 @@
 # fpieee.m4 serial 2  -*- coding: utf-8 -*-
-dnl Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/fprintf-posix.m4 b/m4/fprintf-posix.m4
index 0bedbfef4c..3a51bcf4e1 100644
--- a/m4/fprintf-posix.m4
+++ b/m4/fprintf-posix.m4
@@ -1,5 +1,5 @@
 # fprintf-posix.m4 serial 14
-dnl Copyright (C) 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/fpurge.m4 b/m4/fpurge.m4
index 1a15454171..b365409d05 100644
--- a/m4/fpurge.m4
+++ b/m4/fpurge.m4
@@ -1,5 +1,5 @@
 # fpurge.m4 serial 12
-dnl Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/freadable.m4 b/m4/freadable.m4
index 3c9b6bbbfe..a86fdcbcb3 100644
--- a/m4/freadable.m4
+++ b/m4/freadable.m4
@@ -1,5 +1,5 @@
 # freadable.m4 serial 3
-dnl Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/freadahead.m4 b/m4/freadahead.m4
index 4d0d291cc0..552056b8d5 100644
--- a/m4/freadahead.m4
+++ b/m4/freadahead.m4
@@ -1,5 +1,5 @@
 # freadahead.m4 serial 1
-dnl Copyright (C) 2012-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/freading.m4 b/m4/freading.m4
index 81b17a64a2..35333369df 100644
--- a/m4/freading.m4
+++ b/m4/freading.m4
@@ -1,5 +1,5 @@
 # freading.m4 serial 2
-dnl Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/freadptr.m4 b/m4/freadptr.m4
index 280315a3a1..763f5d0bc3 100644
--- a/m4/freadptr.m4
+++ b/m4/freadptr.m4
@@ -1,5 +1,5 @@
 # freadptr.m4 serial 1
-dnl Copyright (C) 2012-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/freadseek.m4 b/m4/freadseek.m4
index 22017fc677..019fce459d 100644
--- a/m4/freadseek.m4
+++ b/m4/freadseek.m4
@@ -1,5 +1,5 @@
 # freadseek.m4 serial 2
-dnl Copyright (C) 2012-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/free.m4 b/m4/free.m4
index dfeecd2bf1..0389dea3f4 100644
--- a/m4/free.m4
+++ b/m4/free.m4
@@ -1,5 +1,5 @@
 # free.m4 serial 6
-# Copyright (C) 2003-2005, 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2003-2005, 2009-2023 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
diff --git a/m4/freopen.m4 b/m4/freopen.m4
index f23fbf7b2c..459f8c45fc 100644
--- a/m4/freopen.m4
+++ b/m4/freopen.m4
@@ -1,5 +1,5 @@
 # freopen.m4 serial 7
-dnl Copyright (C) 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/frexp.m4 b/m4/frexp.m4
index d8f3cef44b..0480d98f30 100644
--- a/m4/frexp.m4
+++ b/m4/frexp.m4
@@ -1,5 +1,5 @@
 # frexp.m4 serial 16
-dnl Copyright (C) 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/frexpf.m4 b/m4/frexpf.m4
index fd869d3e70..94a7ef6801 100644
--- a/m4/frexpf.m4
+++ b/m4/frexpf.m4
@@ -1,5 +1,5 @@
 # frexpf.m4 serial 6
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/frexpl.m4 b/m4/frexpl.m4
index 4557613133..b4cf0ca9ea 100644
--- a/m4/frexpl.m4
+++ b/m4/frexpl.m4
@@ -1,5 +1,5 @@
 # frexpl.m4 serial 22
-dnl Copyright (C) 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/fseek.m4 b/m4/fseek.m4
index bd4a55beb2..c5fe688c8f 100644
--- a/m4/fseek.m4
+++ b/m4/fseek.m4
@@ -1,5 +1,5 @@
 # fseek.m4 serial 4
-dnl Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/fseeko.m4 b/m4/fseeko.m4
index e50fe398f1..05ee06bc03 100644
--- a/m4/fseeko.m4
+++ b/m4/fseeko.m4
@@ -1,5 +1,5 @@
 # fseeko.m4 serial 20
-dnl Copyright (C) 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/fseterr.m4 b/m4/fseterr.m4
index 1596bbc0c7..ecdc81e769 100644
--- a/m4/fseterr.m4
+++ b/m4/fseterr.m4
@@ -1,5 +1,5 @@
 # fseterr.m4 serial 1
-dnl Copyright (C) 2012-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/fstat.m4 b/m4/fstat.m4
index 9e61bcce8a..7cb2edb001 100644
--- a/m4/fstat.m4
+++ b/m4/fstat.m4
@@ -1,5 +1,5 @@
 # fstat.m4 serial 8
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/fstatat.m4 b/m4/fstatat.m4
index e8604a6ad3..083076911f 100644
--- a/m4/fstatat.m4
+++ b/m4/fstatat.m4
@@ -1,5 +1,5 @@
 # fstatat.m4 serial 4
-dnl Copyright (C) 2004-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2004-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/fstypename.m4 b/m4/fstypename.m4
index 674992238c..f65c459f64 100644
--- a/m4/fstypename.m4
+++ b/m4/fstypename.m4
@@ -6,7 +6,7 @@ dnl See if struct statfs has the f_fstypename member.
 dnl If so, define HAVE_STRUCT_STATFS_F_FSTYPENAME.
 dnl
 
-# Copyright (C) 1998-1999, 2001, 2004, 2006, 2009-2022 Free Software
+# Copyright (C) 1998-1999, 2001, 2004, 2006, 2009-2023 Free Software
 # Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
diff --git a/m4/fsusage.m4 b/m4/fsusage.m4
index 06e608866b..88f3ca817c 100644
--- a/m4/fsusage.m4
+++ b/m4/fsusage.m4
@@ -1,7 +1,7 @@
 # serial 35
 # Obtaining file system usage information.
 
-# Copyright (C) 1997-1998, 2000-2001, 2003-2022 Free Software Foundation, Inc.
+# Copyright (C) 1997-1998, 2000-2001, 2003-2023 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
diff --git a/m4/fsync.m4 b/m4/fsync.m4
index cbf35fe310..857e495506 100644
--- a/m4/fsync.m4
+++ b/m4/fsync.m4
@@ -1,5 +1,5 @@
 # fsync.m4 serial 2
-dnl Copyright (C) 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/ftell.m4 b/m4/ftell.m4
index 89f2d1bdf5..79f1aaf2f5 100644
--- a/m4/ftell.m4
+++ b/m4/ftell.m4
@@ -1,5 +1,5 @@
 # ftell.m4 serial 3
-dnl Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/ftello.m4 b/m4/ftello.m4
index 919f39d8b8..4901b16835 100644
--- a/m4/ftello.m4
+++ b/m4/ftello.m4
@@ -1,5 +1,5 @@
 # ftello.m4 serial 14
-dnl Copyright (C) 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/ftruncate.m4 b/m4/ftruncate.m4
index 2697e0eb3b..74c347598d 100644
--- a/m4/ftruncate.m4
+++ b/m4/ftruncate.m4
@@ -2,7 +2,7 @@
 
 # See if we need to emulate a missing ftruncate function using _chsize.
 
-# Copyright (C) 2000-2001, 2003-2007, 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2000-2001, 2003-2007, 2009-2023 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
diff --git a/m4/fts.m4 b/m4/fts.m4
index c722fe36a6..cdab461d45 100644
--- a/m4/fts.m4
+++ b/m4/fts.m4
@@ -1,5 +1,5 @@
 #serial 22
-dnl Copyright (C) 2005-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2005-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/func.m4 b/m4/func.m4
index 6226deed06..6ec0eab0e4 100644
--- a/m4/func.m4
+++ b/m4/func.m4
@@ -1,5 +1,5 @@
 # func.m4 serial 2
-dnl Copyright (C) 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/futimens.m4 b/m4/futimens.m4
index e3caa7d898..3aaa10a0b5 100644
--- a/m4/futimens.m4
+++ b/m4/futimens.m4
@@ -1,7 +1,7 @@
 # serial 9
 # See if we need to provide futimens replacement.
 
-dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/fwritable.m4 b/m4/fwritable.m4
index a1e5ad939a..5452c29095 100644
--- a/m4/fwritable.m4
+++ b/m4/fwritable.m4
@@ -1,5 +1,5 @@
 # fwritable.m4 serial 3
-dnl Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/fwriting.m4 b/m4/fwriting.m4
index 9bbb7b8542..eee7d50678 100644
--- a/m4/fwriting.m4
+++ b/m4/fwriting.m4
@@ -1,5 +1,5 @@
 # fwriting.m4 serial 3
-dnl Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/gc-arcfour.m4 b/m4/gc-arcfour.m4
index 4fe24fbcbd..fb055cf4b4 100644
--- a/m4/gc-arcfour.m4
+++ b/m4/gc-arcfour.m4
@@ -1,5 +1,5 @@
 # gc-arcfour.m4 serial 3
-dnl Copyright (C) 2005, 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2005, 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/gc-arctwo.m4 b/m4/gc-arctwo.m4
index 786f5a0f73..9d38719676 100644
--- a/m4/gc-arctwo.m4
+++ b/m4/gc-arctwo.m4
@@ -1,5 +1,5 @@
 # gc-arctwo.m4 serial 2
-dnl Copyright (C) 2005, 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2005, 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/gc-camellia.m4 b/m4/gc-camellia.m4
index 9417c403bb..179146defa 100644
--- a/m4/gc-camellia.m4
+++ b/m4/gc-camellia.m4
@@ -1,5 +1,5 @@
 # gc-camellia.m4 serial 3
-dnl Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/gc-des.m4 b/m4/gc-des.m4
index 2604a65b39..4bb0dad9fc 100644
--- a/m4/gc-des.m4
+++ b/m4/gc-des.m4
@@ -1,5 +1,5 @@
 # gc-des.m4 serial 3
-dnl Copyright (C) 2005, 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2005, 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/gc-hmac-md5.m4 b/m4/gc-hmac-md5.m4
index 31c084f237..e257f5f49e 100644
--- a/m4/gc-hmac-md5.m4
+++ b/m4/gc-hmac-md5.m4
@@ -1,5 +1,5 @@
 # gc-hmac-md5.m4 serial 3
-dnl Copyright (C) 2005, 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2005, 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/gc-hmac-sha1.m4 b/m4/gc-hmac-sha1.m4
index f55c2335e2..5c641e271d 100644
--- a/m4/gc-hmac-sha1.m4
+++ b/m4/gc-hmac-sha1.m4
@@ -1,5 +1,5 @@
 # gc-hmac-sha1.m4 serial 3
-dnl Copyright (C) 2005, 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2005, 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/gc-hmac-sha256.m4 b/m4/gc-hmac-sha256.m4
index 9d69a26cb0..dec3c57964 100644
--- a/m4/gc-hmac-sha256.m4
+++ b/m4/gc-hmac-sha256.m4
@@ -1,5 +1,5 @@
 # gc-hmac-sha256.m4 serial 3
-dnl Copyright (C) 2005, 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2005, 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/gc-hmac-sha512.m4 b/m4/gc-hmac-sha512.m4
index 0723ebce52..4424d4f534 100644
--- a/m4/gc-hmac-sha512.m4
+++ b/m4/gc-hmac-sha512.m4
@@ -1,5 +1,5 @@
 # gc-hmac-sha512.m4 serial 3
-dnl Copyright (C) 2005, 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2005, 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/gc-md2.m4 b/m4/gc-md2.m4
index 1b04951b4d..8bda8c6692 100644
--- a/m4/gc-md2.m4
+++ b/m4/gc-md2.m4
@@ -1,5 +1,5 @@
 # gc-md2.m4 serial 2
-dnl Copyright (C) 2005, 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2005, 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/gc-md4.m4 b/m4/gc-md4.m4
index 949ea9f181..5fae22edda 100644
--- a/m4/gc-md4.m4
+++ b/m4/gc-md4.m4
@@ -1,5 +1,5 @@
 # gc-md4.m4 serial 2
-dnl Copyright (C) 2005, 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2005, 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/gc-md5.m4 b/m4/gc-md5.m4
index eff9259cfa..dcb3f350a1 100644
--- a/m4/gc-md5.m4
+++ b/m4/gc-md5.m4
@@ -1,5 +1,5 @@
 # gc-md5.m4 serial 2
-dnl Copyright (C) 2005, 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2005, 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/gc-rijndael.m4 b/m4/gc-rijndael.m4
index 5fa022f196..31c26c671f 100644
--- a/m4/gc-rijndael.m4
+++ b/m4/gc-rijndael.m4
@@ -1,5 +1,5 @@
 # gc-rijndael.m4 serial 3
-dnl Copyright (C) 2005, 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2005, 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/gc-sha1.m4 b/m4/gc-sha1.m4
index 82c8e685f5..9dd5ca333c 100644
--- a/m4/gc-sha1.m4
+++ b/m4/gc-sha1.m4
@@ -1,5 +1,5 @@
 # gc-sha1.m4 serial 3
-dnl Copyright (C) 2005, 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2005, 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/gc-sha256.m4 b/m4/gc-sha256.m4
index ec93ac0867..b2e13968bb 100644
--- a/m4/gc-sha256.m4
+++ b/m4/gc-sha256.m4
@@ -1,5 +1,5 @@
 # gc-sha256.m4 serial 1
-dnl Copyright (C) 2005, 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2005, 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/gc-sha512.m4 b/m4/gc-sha512.m4
index 9d9931f844..c699c83129 100644
--- a/m4/gc-sha512.m4
+++ b/m4/gc-sha512.m4
@@ -1,5 +1,5 @@
 # gc-sha512.m4 serial 1
-dnl Copyright (C) 2005, 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2005, 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/gc-sm3.m4 b/m4/gc-sm3.m4
index 8894002682..61acd4bcdf 100644
--- a/m4/gc-sm3.m4
+++ b/m4/gc-sm3.m4
@@ -1,5 +1,5 @@
 # gc-sm3.m4 serial 2
-dnl Copyright (C) 2017-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2017-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/gc.m4 b/m4/gc.m4
index 501c2f6127..9733a0b857 100644
--- a/m4/gc.m4
+++ b/m4/gc.m4
@@ -1,5 +1,5 @@
 # gc.m4 serial 13
-dnl Copyright (C) 2005-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2005-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/getaddrinfo.m4 b/m4/getaddrinfo.m4
index 65a0fd0ecf..15f09ffb93 100644
--- a/m4/getaddrinfo.m4
+++ b/m4/getaddrinfo.m4
@@ -1,5 +1,5 @@
 # getaddrinfo.m4 serial 34
-dnl Copyright (C) 2004-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2004-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/getcwd-abort-bug.m4 b/m4/getcwd-abort-bug.m4
index 2174e3f9c6..cd1240c7d3 100644
--- a/m4/getcwd-abort-bug.m4
+++ b/m4/getcwd-abort-bug.m4
@@ -3,7 +3,7 @@
 # name is unusually large.  Any length between 4k and 16k trigger the bug
 # when using glibc-2.4.90-9 or older.
 
-# Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
diff --git a/m4/getcwd-path-max.m4 b/m4/getcwd-path-max.m4
index e12045596b..516c0789c5 100644
--- a/m4/getcwd-path-max.m4
+++ b/m4/getcwd-path-max.m4
@@ -6,7 +6,7 @@
 # I've heard that this is due to a Linux kernel bug, and that it has
 # been fixed between 2.4.21-pre3 and 2.4.21-pre4.
 
-# Copyright (C) 2003-2007, 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2003-2007, 2009-2023 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
diff --git a/m4/getcwd.m4 b/m4/getcwd.m4
index 076ca31485..c2e67d2e57 100644
--- a/m4/getcwd.m4
+++ b/m4/getcwd.m4
@@ -1,6 +1,6 @@
 # getcwd.m4 - check for working getcwd that is compatible with glibc
 
-# Copyright (C) 2001, 2003-2007, 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2001, 2003-2007, 2009-2023 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
diff --git a/m4/getdelim.m4 b/m4/getdelim.m4
index 703c1f876f..9aaed202ab 100644
--- a/m4/getdelim.m4
+++ b/m4/getdelim.m4
@@ -1,6 +1,6 @@
 # getdelim.m4 serial 16
 
-dnl Copyright (C) 2005-2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2005-2007, 2009-2023 Free Software Foundation, Inc.
 dnl
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
diff --git a/m4/getdomainname.m4 b/m4/getdomainname.m4
index ebc4dbe230..1510a66163 100644
--- a/m4/getdomainname.m4
+++ b/m4/getdomainname.m4
@@ -1,5 +1,5 @@
 # getdomainname.m4 serial 11
-dnl Copyright (C) 2002-2003, 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2003, 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/getdtablesize.m4 b/m4/getdtablesize.m4
index 6134eaace0..8bcda9053b 100644
--- a/m4/getdtablesize.m4
+++ b/m4/getdtablesize.m4
@@ -1,5 +1,5 @@
 # getdtablesize.m4 serial 8
-dnl Copyright (C) 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/getentropy.m4 b/m4/getentropy.m4
index eab47d7a2e..0c6cda88f5 100644
--- a/m4/getentropy.m4
+++ b/m4/getentropy.m4
@@ -1,5 +1,5 @@
 # getentropy.m4
-dnl Copyright 2020-2022 Free Software Foundation, Inc.
+dnl Copyright 2020-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/getgroups.m4 b/m4/getgroups.m4
index d7a71f5ca6..241fec88e3 100644
--- a/m4/getgroups.m4
+++ b/m4/getgroups.m4
@@ -3,7 +3,7 @@
 dnl From Jim Meyering.
 dnl A wrapper around AC_FUNC_GETGROUPS.
 
-# Copyright (C) 1996-1997, 1999-2004, 2008-2022 Free Software Foundation, Inc.
+# Copyright (C) 1996-1997, 1999-2004, 2008-2023 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
diff --git a/m4/gethostname.m4 b/m4/gethostname.m4
index 11f22b2fa6..63f5f63698 100644
--- a/m4/gethostname.m4
+++ b/m4/gethostname.m4
@@ -1,5 +1,5 @@
 # gethostname.m4 serial 15
-dnl Copyright (C) 2002, 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002, 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/gethrxtime.m4 b/m4/gethrxtime.m4
index 04ea633fdf..67b9c8c699 100644
--- a/m4/gethrxtime.m4
+++ b/m4/gethrxtime.m4
@@ -1,5 +1,5 @@
 # gethrxtime.m4 serial 13
-dnl Copyright (C) 2005-2006, 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2005-2006, 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/getline.m4 b/m4/getline.m4
index ca0301d2c1..03569f06b2 100644
--- a/m4/getline.m4
+++ b/m4/getline.m4
@@ -1,6 +1,6 @@
 # getline.m4 serial 30
 
-dnl Copyright (C) 1998-2003, 2005-2007, 2009-2022 Free Software Foundation,
+dnl Copyright (C) 1998-2003, 2005-2007, 2009-2023 Free Software Foundation,
 dnl Inc.
 dnl
 dnl This file is free software; the Free Software Foundation
diff --git a/m4/getloadavg.m4 b/m4/getloadavg.m4
index 7bb8890bd5..79e420baae 100644
--- a/m4/getloadavg.m4
+++ b/m4/getloadavg.m4
@@ -1,6 +1,6 @@
 # Check for getloadavg.
 
-# Copyright (C) 1992-1996, 1999-2000, 2002-2003, 2006, 2008-2022 Free Software
+# Copyright (C) 1992-1996, 1999-2000, 2002-2003, 2006, 2008-2023 Free Software
 # Foundation, Inc.
 
 # This file is free software; the Free Software Foundation
diff --git a/m4/getlogin.m4 b/m4/getlogin.m4
index d51d6cfdcd..142a2a94ad 100644
--- a/m4/getlogin.m4
+++ b/m4/getlogin.m4
@@ -1,5 +1,5 @@
 # getlogin.m4 serial 5
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/getlogin_r.m4 b/m4/getlogin_r.m4
index c60ef34db3..db9e37af45 100644
--- a/m4/getlogin_r.m4
+++ b/m4/getlogin_r.m4
@@ -1,6 +1,6 @@
 #serial 13
 
-# Copyright (C) 2005-2007, 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2005-2007, 2009-2023 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
diff --git a/m4/getndelim2.m4 b/m4/getndelim2.m4
index fe4dc89f81..cc0fd43015 100644
--- a/m4/getndelim2.m4
+++ b/m4/getndelim2.m4
@@ -1,5 +1,5 @@
 # getndelim2.m4 serial 8
-dnl Copyright (C) 2003, 2006, 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2003, 2006, 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/getnline.m4 b/m4/getnline.m4
index 0dcb821597..a0881d3929 100644
--- a/m4/getnline.m4
+++ b/m4/getnline.m4
@@ -1,5 +1,5 @@
 # getnline.m4 serial 3
-dnl Copyright (C) 2003, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2003, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/getopt.m4 b/m4/getopt.m4
index ff78ed535d..7981a09552 100644
--- a/m4/getopt.m4
+++ b/m4/getopt.m4
@@ -1,5 +1,5 @@
 # getopt.m4 serial 48
-dnl Copyright (C) 2002-2006, 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2006, 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/getpagesize.m4 b/m4/getpagesize.m4
index 19f894caac..79925a736b 100644
--- a/m4/getpagesize.m4
+++ b/m4/getpagesize.m4
@@ -1,5 +1,5 @@
 # getpagesize.m4 serial 10
-dnl Copyright (C) 2002, 2004-2005, 2007, 2009-2022 Free Software Foundation,
+dnl Copyright (C) 2002, 2004-2005, 2007, 2009-2023 Free Software Foundation,
 dnl Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
diff --git a/m4/getpass.m4 b/m4/getpass.m4
index 863cb35485..15882712d9 100644
--- a/m4/getpass.m4
+++ b/m4/getpass.m4
@@ -1,5 +1,5 @@
 # getpass.m4 serial 17
-dnl Copyright (C) 2002-2003, 2005-2006, 2009-2022 Free Software Foundation,
+dnl Copyright (C) 2002-2003, 2005-2006, 2009-2023 Free Software Foundation,
 dnl Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
diff --git a/m4/getprogname.m4 b/m4/getprogname.m4
index b26146e9a9..b67c527cb6 100644
--- a/m4/getprogname.m4
+++ b/m4/getprogname.m4
@@ -1,6 +1,6 @@
 # getprogname.m4 - check for getprogname or replacements for it
 
-# Copyright (C) 2016-2022 Free Software Foundation, Inc.
+# Copyright (C) 2016-2023 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
diff --git a/m4/getrandom.m4 b/m4/getrandom.m4
index 6ca715005d..95111567d7 100644
--- a/m4/getrandom.m4
+++ b/m4/getrandom.m4
@@ -1,5 +1,5 @@
 # getrandom.m4 serial 8
-dnl Copyright 2020-2022 Free Software Foundation, Inc.
+dnl Copyright 2020-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/getrusage.m4 b/m4/getrusage.m4
index bc68b4a536..7de92f544c 100644
--- a/m4/getrusage.m4
+++ b/m4/getrusage.m4
@@ -1,5 +1,5 @@
 # getrusage.m4 serial 1
-dnl Copyright (C) 2012-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/getsubopt.m4 b/m4/getsubopt.m4
index 240e48010f..0753b1f64c 100644
--- a/m4/getsubopt.m4
+++ b/m4/getsubopt.m4
@@ -1,5 +1,5 @@
 # getsubopt.m4 serial 5
-dnl Copyright (C) 2004, 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2004, 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/gettext.m4 b/m4/gettext.m4
index 989d6456d9..a0eda3d8d9 100644
--- a/m4/gettext.m4
+++ b/m4/gettext.m4
@@ -1,5 +1,5 @@
 # gettext.m4 serial 71 (gettext-0.20.2)
-dnl Copyright (C) 1995-2014, 2016, 2018-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 1995-2014, 2016, 2018-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/gettime.m4 b/m4/gettime.m4
index c3e0713b57..06f32fe26c 100644
--- a/m4/gettime.m4
+++ b/m4/gettime.m4
@@ -1,5 +1,5 @@
 # gettime.m4 serial 12
-dnl Copyright (C) 2002, 2004-2006, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002, 2004-2006, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/gettimeofday.m4 b/m4/gettimeofday.m4
index f729601b1d..5051d61cc8 100644
--- a/m4/gettimeofday.m4
+++ b/m4/gettimeofday.m4
@@ -1,6 +1,6 @@
 # serial 29
 
-# Copyright (C) 2001-2003, 2005, 2007, 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2001-2003, 2005, 2007, 2009-2023 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
diff --git a/m4/getugroups.m4 b/m4/getugroups.m4
index 4fa67a94d2..ccde993985 100644
--- a/m4/getugroups.m4
+++ b/m4/getugroups.m4
@@ -1,5 +1,5 @@
 # getugroups.m4 serial 9
-dnl Copyright (C) 2002-2003, 2005-2006, 2009-2022 Free Software Foundation,
+dnl Copyright (C) 2002-2003, 2005-2006, 2009-2023 Free Software Foundation,
 dnl Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
diff --git a/m4/getumask.m4 b/m4/getumask.m4
index 0aa1eb4d57..b5672af0c5 100644
--- a/m4/getumask.m4
+++ b/m4/getumask.m4
@@ -1,5 +1,5 @@
 # getumask.m4 serial 1
-dnl Copyright 2020-2022 Free Software Foundation, Inc.
+dnl Copyright 2020-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/getusershell.m4 b/m4/getusershell.m4
index 5116072c14..cb33e3908b 100644
--- a/m4/getusershell.m4
+++ b/m4/getusershell.m4
@@ -1,5 +1,5 @@
 # getusershell.m4 serial 7
-dnl Copyright (C) 2002-2003, 2006, 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2003, 2006, 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/gl-openssl.m4 b/m4/gl-openssl.m4
index d076f84473..7eab4e102e 100644
--- a/m4/gl-openssl.m4
+++ b/m4/gl-openssl.m4
@@ -1,5 +1,5 @@
 # gl-openssl.m4 serial 6
-dnl Copyright (C) 2013-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2013-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/glob.m4 b/m4/glob.m4
index f59b84ff05..4254b6e572 100644
--- a/m4/glob.m4
+++ b/m4/glob.m4
@@ -1,5 +1,5 @@
 # glob.m4 serial 26
-dnl Copyright (C) 2005-2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2005-2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/glob_h.m4 b/m4/glob_h.m4
index 41ffde236f..3ab5031c1a 100644
--- a/m4/glob_h.m4
+++ b/m4/glob_h.m4
@@ -1,5 +1,5 @@
 # glob_h.m4 serial 9
-dnl Copyright (C) 2018-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2018-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/gnu-make.m4 b/m4/gnu-make.m4
index 6ae1b316da..6f7c3064d1 100644
--- a/m4/gnu-make.m4
+++ b/m4/gnu-make.m4
@@ -1,6 +1,6 @@
 # Determine whether recent-enough GNU Make is being used.
 
-# Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
diff --git a/m4/gnulib-common.m4 b/m4/gnulib-common.m4
index 40c19cab69..fb7fed41f8 100644
--- a/m4/gnulib-common.m4
+++ b/m4/gnulib-common.m4
@@ -1,5 +1,5 @@
 # gnulib-common.m4 serial 75
-dnl Copyright (C) 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/gnulib-tool.m4 b/m4/gnulib-tool.m4
index 8428901c34..a9dd569bdb 100644
--- a/m4/gnulib-tool.m4
+++ b/m4/gnulib-tool.m4
@@ -1,5 +1,5 @@
 # gnulib-tool.m4 serial 4
-dnl Copyright (C) 2004-2005, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2004-2005, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/grantpt.m4 b/m4/grantpt.m4
index 4f09de8298..6d14396b82 100644
--- a/m4/grantpt.m4
+++ b/m4/grantpt.m4
@@ -1,5 +1,5 @@
 # grantpt.m4 serial 3
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/group-member.m4 b/m4/group-member.m4
index f9bc38b629..7c56ee3de7 100644
--- a/m4/group-member.m4
+++ b/m4/group-member.m4
@@ -1,6 +1,6 @@
 # serial 14
 
-# Copyright (C) 1999-2001, 2003-2007, 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 1999-2001, 2003-2007, 2009-2023 Free Software Foundation, Inc.
 
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
diff --git a/m4/host-cpu-c-abi.m4 b/m4/host-cpu-c-abi.m4
index b9223241b4..134f228341 100644
--- a/m4/host-cpu-c-abi.m4
+++ b/m4/host-cpu-c-abi.m4
@@ -1,5 +1,5 @@
 # host-cpu-c-abi.m4 serial 15
-dnl Copyright (C) 2002-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/host-os.m4 b/m4/host-os.m4
index ea6206e6ef..c4416c09e9 100644
--- a/m4/host-os.m4
+++ b/m4/host-os.m4
@@ -1,6 +1,6 @@
 # serial 12
 
-# Copyright (C) 2001, 2003-2004, 2006, 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2001, 2003-2004, 2006, 2009-2023 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
diff --git a/m4/hostent.m4 b/m4/hostent.m4
index 69fc5ac1a8..3b2cc2b200 100644
--- a/m4/hostent.m4
+++ b/m4/hostent.m4
@@ -1,5 +1,5 @@
 # hostent.m4 serial 4
-dnl Copyright (C) 2008, 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2008, 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/human.m4 b/m4/human.m4
index ce13518876..ab01c3611b 100644
--- a/m4/human.m4
+++ b/m4/human.m4
@@ -1,5 +1,5 @@
 #serial 11
-dnl Copyright (C) 2002-2006, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2006, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/hypot-ieee.m4 b/m4/hypot-ieee.m4
index b4117638ed..c683e86bd0 100644
--- a/m4/hypot-ieee.m4
+++ b/m4/hypot-ieee.m4
@@ -1,5 +1,5 @@
 # hypot-ieee.m4 serial 1
-dnl Copyright (C) 2012-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/hypot.m4 b/m4/hypot.m4
index 86737de106..c4ae9695ef 100644
--- a/m4/hypot.m4
+++ b/m4/hypot.m4
@@ -1,5 +1,5 @@
 # hypot.m4 serial 9
-dnl Copyright (C) 2012-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/hypotf-ieee.m4 b/m4/hypotf-ieee.m4
index 581310ce8b..602319ab2e 100644
--- a/m4/hypotf-ieee.m4
+++ b/m4/hypotf-ieee.m4
@@ -1,5 +1,5 @@
 # hypotf-ieee.m4 serial 1
-dnl Copyright (C) 2012-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/hypotf.m4 b/m4/hypotf.m4
index aedfa9de9f..519ca5cebf 100644
--- a/m4/hypotf.m4
+++ b/m4/hypotf.m4
@@ -1,5 +1,5 @@
 # hypotf.m4 serial 10
-dnl Copyright (C) 2012-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/hypotl-ieee.m4 b/m4/hypotl-ieee.m4
index 1050c955d9..f5cbae5f07 100644
--- a/m4/hypotl-ieee.m4
+++ b/m4/hypotl-ieee.m4
@@ -1,5 +1,5 @@
 # hypotl-ieee.m4 serial 1
-dnl Copyright (C) 2012-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/hypotl.m4 b/m4/hypotl.m4
index 339e4a4abd..e9291dd2b8 100644
--- a/m4/hypotl.m4
+++ b/m4/hypotl.m4
@@ -1,5 +1,5 @@
 # hypotl.m4 serial 11
-dnl Copyright (C) 2012-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/i-ring.m4 b/m4/i-ring.m4
index 404e84f22e..b1c68999a5 100644
--- a/m4/i-ring.m4
+++ b/m4/i-ring.m4
@@ -1,5 +1,5 @@
 # serial 2
-dnl Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/iconv.m4 b/m4/iconv.m4
index 2065c9772a..ff5d526113 100644
--- a/m4/iconv.m4
+++ b/m4/iconv.m4
@@ -1,5 +1,5 @@
 # iconv.m4 serial 26
-dnl Copyright (C) 2000-2002, 2007-2014, 2016-2022 Free Software Foundation,
+dnl Copyright (C) 2000-2002, 2007-2014, 2016-2023 Free Software Foundation,
 dnl Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
diff --git a/m4/iconv_h.m4 b/m4/iconv_h.m4
index 584656628e..40c985ee33 100644
--- a/m4/iconv_h.m4
+++ b/m4/iconv_h.m4
@@ -1,5 +1,5 @@
 # iconv_h.m4 serial 16
-dnl Copyright (C) 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/iconv_open-utf.m4 b/m4/iconv_open-utf.m4
index 282c2b7e7e..8f974bb85d 100644
--- a/m4/iconv_open-utf.m4
+++ b/m4/iconv_open-utf.m4
@@ -1,5 +1,5 @@
 # iconv_open-utf.m4 serial 4
-dnl Copyright (C) 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/iconv_open.m4 b/m4/iconv_open.m4
index 1ed26cd82d..8a27709f93 100644
--- a/m4/iconv_open.m4
+++ b/m4/iconv_open.m4
@@ -1,5 +1,5 @@
 # iconv_open.m4 serial 16
-dnl Copyright (C) 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/idcache.m4 b/m4/idcache.m4
index 8e32f26224..9337c75ff6 100644
--- a/m4/idcache.m4
+++ b/m4/idcache.m4
@@ -1,5 +1,5 @@
 # idcache.m4 serial 7
-dnl Copyright (C) 2002-2003, 2005-2006, 2009-2022 Free Software Foundation,
+dnl Copyright (C) 2002-2003, 2005-2006, 2009-2023 Free Software Foundation,
 dnl Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
diff --git a/m4/idpriv.m4 b/m4/idpriv.m4
index b3b1c7b45f..fc3dd17d38 100644
--- a/m4/idpriv.m4
+++ b/m4/idpriv.m4
@@ -1,5 +1,5 @@
 # idpriv.m4 serial 1
-dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/ieee754-h.m4 b/m4/ieee754-h.m4
index aff4f2c2df..73a8f8350b 100644
--- a/m4/ieee754-h.m4
+++ b/m4/ieee754-h.m4
@@ -1,6 +1,6 @@
 # Configure ieee754-h module
 
-dnl Copyright 2018-2022 Free Software Foundation, Inc.
+dnl Copyright 2018-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/ilogb.m4 b/m4/ilogb.m4
index d5570252d5..e31bd43544 100644
--- a/m4/ilogb.m4
+++ b/m4/ilogb.m4
@@ -1,5 +1,5 @@
 # ilogb.m4 serial 7
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/ilogbf.m4 b/m4/ilogbf.m4
index b867debeec..a89d28561b 100644
--- a/m4/ilogbf.m4
+++ b/m4/ilogbf.m4
@@ -1,5 +1,5 @@
 # ilogbf.m4 serial 6
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/ilogbl.m4 b/m4/ilogbl.m4
index e05907b896..9081724b66 100644
--- a/m4/ilogbl.m4
+++ b/m4/ilogbl.m4
@@ -1,5 +1,5 @@
 # ilogbl.m4 serial 5
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/imaxabs.m4 b/m4/imaxabs.m4
index ff7013dcfb..5fb2a6963f 100644
--- a/m4/imaxabs.m4
+++ b/m4/imaxabs.m4
@@ -1,5 +1,5 @@
 # imaxabs.m4 serial 4
-dnl Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/imaxdiv.m4 b/m4/imaxdiv.m4
index 89d43e18d9..65d2c65cbb 100644
--- a/m4/imaxdiv.m4
+++ b/m4/imaxdiv.m4
@@ -1,5 +1,5 @@
 # imaxdiv.m4 serial 5
-dnl Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/immutable.m4 b/m4/immutable.m4
index 91383c3f09..2d58d2dc8b 100644
--- a/m4/immutable.m4
+++ b/m4/immutable.m4
@@ -1,5 +1,5 @@
 # immutable.m4 serial 1
-dnl Copyright (C) 2021-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2021-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/include_next.m4 b/m4/include_next.m4
index a9247f6f11..9f19215ef0 100644
--- a/m4/include_next.m4
+++ b/m4/include_next.m4
@@ -1,5 +1,5 @@
 # include_next.m4 serial 26
-dnl Copyright (C) 2006-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2006-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/inet_ntop.m4 b/m4/inet_ntop.m4
index c335cae7e7..48822d69cd 100644
--- a/m4/inet_ntop.m4
+++ b/m4/inet_ntop.m4
@@ -1,5 +1,5 @@
 # inet_ntop.m4 serial 21
-dnl Copyright (C) 2005-2006, 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2005-2006, 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/inet_pton.m4 b/m4/inet_pton.m4
index 9507296d3f..94695c12e8 100644
--- a/m4/inet_pton.m4
+++ b/m4/inet_pton.m4
@@ -1,5 +1,5 @@
 # inet_pton.m4 serial 19
-dnl Copyright (C) 2006, 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2006, 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/inline.m4 b/m4/inline.m4
index 3f0726553f..dbbb811674 100644
--- a/m4/inline.m4
+++ b/m4/inline.m4
@@ -1,5 +1,5 @@
 # inline.m4 serial 4
-dnl Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/intl-thread-locale.m4 b/m4/intl-thread-locale.m4
index d5d5b26acf..c231899511 100644
--- a/m4/intl-thread-locale.m4
+++ b/m4/intl-thread-locale.m4
@@ -1,5 +1,5 @@
 # intl-thread-locale.m4 serial 9
-dnl Copyright (C) 2015-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2015-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/intlmacosx.m4 b/m4/intlmacosx.m4
index ecc88d6e74..81eefd750b 100644
--- a/m4/intlmacosx.m4
+++ b/m4/intlmacosx.m4
@@ -1,5 +1,5 @@
 # intlmacosx.m4 serial 8 (gettext-0.20.2)
-dnl Copyright (C) 2004-2014, 2016, 2019-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2004-2014, 2016, 2019-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/intmax_t.m4 b/m4/intmax_t.m4
index 8a15dabdf0..ef32e1b9ca 100644
--- a/m4/intmax_t.m4
+++ b/m4/intmax_t.m4
@@ -1,5 +1,5 @@
 # intmax_t.m4 serial 9
-dnl Copyright (C) 1997-2004, 2006-2007, 2009-2022 Free Software Foundation,
+dnl Copyright (C) 1997-2004, 2006-2007, 2009-2023 Free Software Foundation,
 dnl Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
diff --git a/m4/inttostr.m4 b/m4/inttostr.m4
index 92784d1456..0297ddd571 100644
--- a/m4/inttostr.m4
+++ b/m4/inttostr.m4
@@ -1,5 +1,5 @@
 #serial 8
-dnl Copyright (C) 2004-2006, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2004-2006, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/inttypes.m4 b/m4/inttypes.m4
index df25a21eb9..bf2eab2ba3 100644
--- a/m4/inttypes.m4
+++ b/m4/inttypes.m4
@@ -1,5 +1,5 @@
 # inttypes.m4 serial 36
-dnl Copyright (C) 2006-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2006-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/inttypes_h.m4 b/m4/inttypes_h.m4
index 6e9eebf1b4..68c60e9dbb 100644
--- a/m4/inttypes_h.m4
+++ b/m4/inttypes_h.m4
@@ -1,5 +1,5 @@
 # inttypes_h.m4 serial 10
-dnl Copyright (C) 1997-2004, 2006, 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 1997-2004, 2006, 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/ioctl.m4 b/m4/ioctl.m4
index 7c72134546..83036c3ab2 100644
--- a/m4/ioctl.m4
+++ b/m4/ioctl.m4
@@ -1,5 +1,5 @@
 # ioctl.m4 serial 6
-dnl Copyright (C) 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/isapipe.m4 b/m4/isapipe.m4
index 36039cef84..3f27797941 100644
--- a/m4/isapipe.m4
+++ b/m4/isapipe.m4
@@ -1,6 +1,6 @@
 # Test whether a file descriptor is a pipe.
 
-dnl Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
 
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
diff --git a/m4/isatty.m4 b/m4/isatty.m4
index 55ba760c47..c073ca4f05 100644
--- a/m4/isatty.m4
+++ b/m4/isatty.m4
@@ -1,5 +1,5 @@
 # isatty.m4 serial 3
-dnl Copyright (C) 2012-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/isblank.m4 b/m4/isblank.m4
index 1d0ed6ce41..809eab46d3 100644
--- a/m4/isblank.m4
+++ b/m4/isblank.m4
@@ -1,5 +1,5 @@
 # isblank.m4 serial 3
-dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/isfinite.m4 b/m4/isfinite.m4
index e6325f952b..8f18ae8d62 100644
--- a/m4/isfinite.m4
+++ b/m4/isfinite.m4
@@ -1,5 +1,5 @@
 # isfinite.m4 serial 17
-dnl Copyright (C) 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/isinf.m4 b/m4/isinf.m4
index 6f0029324b..2b5ebdf9d4 100644
--- a/m4/isinf.m4
+++ b/m4/isinf.m4
@@ -1,5 +1,5 @@
 # isinf.m4 serial 13
-dnl Copyright (C) 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/isnan.m4 b/m4/isnan.m4
index 4ae6ed7119..8f8904e7e0 100644
--- a/m4/isnan.m4
+++ b/m4/isnan.m4
@@ -1,5 +1,5 @@
 # isnan.m4 serial 5
-dnl Copyright (C) 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/isnand.m4 b/m4/isnand.m4
index 4eadde7cb7..95346f420b 100644
--- a/m4/isnand.m4
+++ b/m4/isnand.m4
@@ -1,5 +1,5 @@
 # isnand.m4 serial 12
-dnl Copyright (C) 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/isnanf.m4 b/m4/isnanf.m4
index 44c825a1f0..01f7bbd20d 100644
--- a/m4/isnanf.m4
+++ b/m4/isnanf.m4
@@ -1,5 +1,5 @@
 # isnanf.m4 serial 18
-dnl Copyright (C) 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/isnanl.m4 b/m4/isnanl.m4
index fa49a644fe..bb39d02558 100644
--- a/m4/isnanl.m4
+++ b/m4/isnanl.m4
@@ -1,5 +1,5 @@
 # isnanl.m4 serial 22
-dnl Copyright (C) 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/iswblank.m4 b/m4/iswblank.m4
index ddecf9b847..ffb0d9bf30 100644
--- a/m4/iswblank.m4
+++ b/m4/iswblank.m4
@@ -1,5 +1,5 @@
 # iswblank.m4 serial 5
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/iswctype.m4 b/m4/iswctype.m4
index 6baec57491..e15491f585 100644
--- a/m4/iswctype.m4
+++ b/m4/iswctype.m4
@@ -1,5 +1,5 @@
 # iswctype.m4 serial 2
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/iswdigit.m4 b/m4/iswdigit.m4
index 643c5b294a..0df7b303fc 100644
--- a/m4/iswdigit.m4
+++ b/m4/iswdigit.m4
@@ -1,5 +1,5 @@
 # iswdigit.m4 serial 3
-dnl Copyright (C) 2020-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2020-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/iswxdigit.m4 b/m4/iswxdigit.m4
index cc7c1a2495..3f952f0b0d 100644
--- a/m4/iswxdigit.m4
+++ b/m4/iswxdigit.m4
@@ -1,5 +1,5 @@
 # iswxdigit.m4 serial 3
-dnl Copyright (C) 2020-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2020-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/javacomp.m4 b/m4/javacomp.m4
index 396e0866ed..9d2770403b 100644
--- a/m4/javacomp.m4
+++ b/m4/javacomp.m4
@@ -1,5 +1,5 @@
 # javacomp.m4 serial 19
-dnl Copyright (C) 2001-2003, 2006-2007, 2009-2022 Free Software Foundation,
+dnl Copyright (C) 2001-2003, 2006-2007, 2009-2023 Free Software Foundation,
 dnl Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
diff --git a/m4/javaexec.m4 b/m4/javaexec.m4
index 960a15e4c6..86cdb2152e 100644
--- a/m4/javaexec.m4
+++ b/m4/javaexec.m4
@@ -1,5 +1,5 @@
 # javaexec.m4 serial 8
-dnl Copyright (C) 2001-2003, 2006, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2001-2003, 2006, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/jm-winsz1.m4 b/m4/jm-winsz1.m4
index a50e62fe81..c37e3f5007 100644
--- a/m4/jm-winsz1.m4
+++ b/m4/jm-winsz1.m4
@@ -1,6 +1,6 @@
 # serial 12
 
-# Copyright (C) 1996, 1999, 2001-2002, 2004, 2006, 2009-2022 Free Software
+# Copyright (C) 1996, 1999, 2001-2002, 2004, 2006, 2009-2023 Free Software
 # Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
diff --git a/m4/jm-winsz2.m4 b/m4/jm-winsz2.m4
index 6d2017ed18..9a90a1ea59 100644
--- a/m4/jm-winsz2.m4
+++ b/m4/jm-winsz2.m4
@@ -1,6 +1,6 @@
 # serial 8
 
-# Copyright (C) 1996, 1999, 2001, 2004, 2009-2022 Free Software Foundation,
+# Copyright (C) 1996, 1999, 2001, 2004, 2009-2023 Free Software Foundation,
 # Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
diff --git a/m4/langinfo_h.m4 b/m4/langinfo_h.m4
index 563c8c431c..b17a526ab9 100644
--- a/m4/langinfo_h.m4
+++ b/m4/langinfo_h.m4
@@ -1,5 +1,5 @@
 # langinfo_h.m4 serial 12
-dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/largefile.m4 b/m4/largefile.m4
index 42c2f9780c..7fb81b864a 100644
--- a/m4/largefile.m4
+++ b/m4/largefile.m4
@@ -1,7 +1,7 @@
 # Enable large files on systems where this is not the default.
 # Enable support for files on Linux file systems with 64-bit inode numbers.
 
-# Copyright 1992-1996, 1998-2022 Free Software Foundation, Inc.
+# Copyright 1992-1996, 1998-2023 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
diff --git a/m4/lchmod.m4 b/m4/lchmod.m4
index cd43beed85..a1370e163f 100644
--- a/m4/lchmod.m4
+++ b/m4/lchmod.m4
@@ -1,6 +1,6 @@
 #serial 10
 
-dnl Copyright (C) 2005-2006, 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2005-2006, 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/lchown.m4 b/m4/lchown.m4
index 9f9cd427c0..c3e6c11f7d 100644
--- a/m4/lchown.m4
+++ b/m4/lchown.m4
@@ -1,7 +1,7 @@
 # serial 17
 # Determine whether we need the lchown wrapper.
 
-dnl Copyright (C) 1998, 2001, 2003-2007, 2009-2022 Free Software Foundation,
+dnl Copyright (C) 1998, 2001, 2003-2007, 2009-2023 Free Software Foundation,
 dnl Inc.
 
 dnl This file is free software; the Free Software Foundation
diff --git a/m4/lcmessage.m4 b/m4/lcmessage.m4
index 1a3eefe796..2e56de6611 100644
--- a/m4/lcmessage.m4
+++ b/m4/lcmessage.m4
@@ -1,5 +1,5 @@
 # lcmessage.m4 serial 8
-dnl Copyright (C) 1995-2002, 2004-2005, 2008-2014, 2016, 2019-2022 Free
+dnl Copyright (C) 1995-2002, 2004-2005, 2008-2014, 2016, 2019-2023 Free
 dnl Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
diff --git a/m4/ld-output-def.m4 b/m4/ld-output-def.m4
index b3e95af973..cb0c387045 100644
--- a/m4/ld-output-def.m4
+++ b/m4/ld-output-def.m4
@@ -1,5 +1,5 @@
 # ld-output-def.m4 serial 3
-dnl Copyright (C) 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/ld-version-script.m4 b/m4/ld-version-script.m4
index bf81b496d0..6c1de28c8b 100644
--- a/m4/ld-version-script.m4
+++ b/m4/ld-version-script.m4
@@ -1,5 +1,5 @@
 # ld-version-script.m4 serial 5
-dnl Copyright (C) 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/ldd.m4 b/m4/ldd.m4
index 0e8c0b3012..acc2755db4 100644
--- a/m4/ldd.m4
+++ b/m4/ldd.m4
@@ -1,5 +1,5 @@
 # ldd.m4 serial 1
-dnl Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/ldexp.m4 b/m4/ldexp.m4
index b07dc05506..ef2c4c2825 100644
--- a/m4/ldexp.m4
+++ b/m4/ldexp.m4
@@ -1,5 +1,5 @@
 # ldexp.m4 serial 1
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/ldexpf.m4 b/m4/ldexpf.m4
index b8225f205f..be5b3cc703 100644
--- a/m4/ldexpf.m4
+++ b/m4/ldexpf.m4
@@ -1,5 +1,5 @@
 # ldexpf.m4 serial 2
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/ldexpl.m4 b/m4/ldexpl.m4
index 06d30f71a8..f2785d67c5 100644
--- a/m4/ldexpl.m4
+++ b/m4/ldexpl.m4
@@ -1,5 +1,5 @@
 # ldexpl.m4 serial 17
-dnl Copyright (C) 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/lib-ignore.m4 b/m4/lib-ignore.m4
index 4928e67cc5..c4d0217360 100644
--- a/m4/lib-ignore.m4
+++ b/m4/lib-ignore.m4
@@ -1,6 +1,6 @@
 # If possible, ignore libraries that are not depended on.
 
-dnl Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/lib-ld.m4 b/m4/lib-ld.m4
index 934207a765..6bc1886f53 100644
--- a/m4/lib-ld.m4
+++ b/m4/lib-ld.m4
@@ -1,5 +1,5 @@
 # lib-ld.m4 serial 10
-dnl Copyright (C) 1996-2003, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 1996-2003, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/lib-link.m4 b/m4/lib-link.m4
index 3b75bcd0de..653e34f8d1 100644
--- a/m4/lib-link.m4
+++ b/m4/lib-link.m4
@@ -1,5 +1,5 @@
 # lib-link.m4 serial 33
-dnl Copyright (C) 2001-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2001-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/lib-prefix.m4 b/m4/lib-prefix.m4
index 999f712f5a..aefe7f7124 100644
--- a/m4/lib-prefix.m4
+++ b/m4/lib-prefix.m4
@@ -1,5 +1,5 @@
 # lib-prefix.m4 serial 20
-dnl Copyright (C) 2001-2005, 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2001-2005, 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/libgmp.m4 b/m4/libgmp.m4
index d69dcc7237..58576c4d0c 100644
--- a/m4/libgmp.m4
+++ b/m4/libgmp.m4
@@ -1,6 +1,6 @@
 # libgmp.m4 serial 7
 # Configure the GMP library or a replacement.
-dnl Copyright 2020-2022 Free Software Foundation, Inc.
+dnl Copyright 2020-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/libsigsegv.m4 b/m4/libsigsegv.m4
index 4da1d2da57..2819a4de0f 100644
--- a/m4/libsigsegv.m4
+++ b/m4/libsigsegv.m4
@@ -1,5 +1,5 @@
 # libsigsegv.m4 serial 4
-dnl Copyright (C) 2002-2003, 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2003, 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/libtextstyle-optional.m4 b/m4/libtextstyle-optional.m4
index a8737a0883..93bec70629 100644
--- a/m4/libtextstyle-optional.m4
+++ b/m4/libtextstyle-optional.m4
@@ -1,5 +1,5 @@
 # libtextstyle-optional.m4 serial 4
-dnl Copyright (C) 2019-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2019-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/libtextstyle.m4 b/m4/libtextstyle.m4
index b72ff4d700..561a392c47 100644
--- a/m4/libtextstyle.m4
+++ b/m4/libtextstyle.m4
@@ -1,5 +1,5 @@
 # libtextstyle.m4 serial 3
-dnl Copyright (C) 2019-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2019-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/libunistring-base.m4 b/m4/libunistring-base.m4
index a0892da4a6..fc6d02399c 100644
--- a/m4/libunistring-base.m4
+++ b/m4/libunistring-base.m4
@@ -1,5 +1,5 @@
 # libunistring-base.m4 serial 7
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/libunistring-optional.m4 b/m4/libunistring-optional.m4
index 445bd0f106..4ad0c7f632 100644
--- a/m4/libunistring-optional.m4
+++ b/m4/libunistring-optional.m4
@@ -1,5 +1,5 @@
 # libunistring-optional.m4 serial 1
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/libunistring.m4 b/m4/libunistring.m4
index 3c18edbb76..1570281176 100644
--- a/m4/libunistring.m4
+++ b/m4/libunistring.m4
@@ -1,5 +1,5 @@
 # libunistring.m4 serial 12
-dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/limits-h.m4 b/m4/limits-h.m4
index 5d5a5bf584..5088fa16fd 100644
--- a/m4/limits-h.m4
+++ b/m4/limits-h.m4
@@ -1,6 +1,6 @@
 dnl Check whether limits.h has needed features.
 
-dnl Copyright 2016-2022 Free Software Foundation, Inc.
+dnl Copyright 2016-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/link-follow.m4 b/m4/link-follow.m4
index 04bbe23356..e058bc2870 100644
--- a/m4/link-follow.m4
+++ b/m4/link-follow.m4
@@ -2,7 +2,7 @@
 dnl Run a program to determine whether link(2) follows symlinks.
 dnl Set LINK_FOLLOWS_SYMLINKS accordingly.
 
-# Copyright (C) 1999-2001, 2004-2006, 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 1999-2001, 2004-2006, 2009-2023 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
diff --git a/m4/link.m4 b/m4/link.m4
index 154b9d02b6..5da2ae008e 100644
--- a/m4/link.m4
+++ b/m4/link.m4
@@ -1,5 +1,5 @@
 # link.m4 serial 11
-dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/linkat.m4 b/m4/linkat.m4
index 2a6f83b521..29978b4608 100644
--- a/m4/linkat.m4
+++ b/m4/linkat.m4
@@ -1,7 +1,7 @@
 # serial 14
 # See if we need to provide linkat replacement.
 
-dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/localcharset.m4 b/m4/localcharset.m4
index f5dbbd4f36..15b6b2a553 100644
--- a/m4/localcharset.m4
+++ b/m4/localcharset.m4
@@ -1,5 +1,5 @@
 # localcharset.m4 serial 8
-dnl Copyright (C) 2002, 2004, 2006, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002, 2004, 2006, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/locale-ar.m4 b/m4/locale-ar.m4
index 574311da38..7b696f480f 100644
--- a/m4/locale-ar.m4
+++ b/m4/locale-ar.m4
@@ -1,5 +1,5 @@
 # locale-ar.m4 serial 9
-dnl Copyright (C) 2003, 2005-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2003, 2005-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/locale-fr.m4 b/m4/locale-fr.m4
index 3753891f35..8c41fadfe8 100644
--- a/m4/locale-fr.m4
+++ b/m4/locale-fr.m4
@@ -1,5 +1,5 @@
 # locale-fr.m4 serial 20
-dnl Copyright (C) 2003, 2005-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2003, 2005-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/locale-ja.m4 b/m4/locale-ja.m4
index 73a5d1aebd..2590173052 100644
--- a/m4/locale-ja.m4
+++ b/m4/locale-ja.m4
@@ -1,5 +1,5 @@
 # locale-ja.m4 serial 15
-dnl Copyright (C) 2003, 2005-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2003, 2005-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/locale-tr.m4 b/m4/locale-tr.m4
index 4b99e67d1d..847fb0da7c 100644
--- a/m4/locale-tr.m4
+++ b/m4/locale-tr.m4
@@ -1,5 +1,5 @@
 # locale-tr.m4 serial 13
-dnl Copyright (C) 2003, 2005-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2003, 2005-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/locale-zh.m4 b/m4/locale-zh.m4
index c997971fad..b9f9eef724 100644
--- a/m4/locale-zh.m4
+++ b/m4/locale-zh.m4
@@ -1,5 +1,5 @@
 # locale-zh.m4 serial 15
-dnl Copyright (C) 2003, 2005-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2003, 2005-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/locale_h.m4 b/m4/locale_h.m4
index ca5d0d0fd0..a33a0a4661 100644
--- a/m4/locale_h.m4
+++ b/m4/locale_h.m4
@@ -1,5 +1,5 @@
 # locale_h.m4 serial 28
-dnl Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/localeconv.m4 b/m4/localeconv.m4
index 09c1a1ac46..ae225fed66 100644
--- a/m4/localeconv.m4
+++ b/m4/localeconv.m4
@@ -1,5 +1,5 @@
 # localeconv.m4 serial 1
-dnl Copyright (C) 2012-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/localename.m4 b/m4/localename.m4
index e0cf8c5cc6..03cce48033 100644
--- a/m4/localename.m4
+++ b/m4/localename.m4
@@ -1,5 +1,5 @@
 # localename.m4 serial 8
-dnl Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/localtime.m4 b/m4/localtime.m4
index 8eb776ba4e..e74ca7d151 100644
--- a/m4/localtime.m4
+++ b/m4/localtime.m4
@@ -1,5 +1,5 @@
 # localtime.m4 serial 2
-dnl Copyright (C) 2017-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2017-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/lock.m4 b/m4/lock.m4
index c4cbf07bda..88cf5575d5 100644
--- a/m4/lock.m4
+++ b/m4/lock.m4
@@ -1,5 +1,5 @@
 # lock.m4 serial 14
-dnl Copyright (C) 2005-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2005-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/log-ieee.m4 b/m4/log-ieee.m4
index 142b4234f4..f28b735aba 100644
--- a/m4/log-ieee.m4
+++ b/m4/log-ieee.m4
@@ -1,5 +1,5 @@
 # log-ieee.m4 serial 1
-dnl Copyright (C) 2012-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/log.m4 b/m4/log.m4
index eedb871cb4..3cffe6b7ca 100644
--- a/m4/log.m4
+++ b/m4/log.m4
@@ -1,5 +1,5 @@
 # log.m4 serial 11
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/log10-ieee.m4 b/m4/log10-ieee.m4
index 1feb1e3f91..198831a6de 100644
--- a/m4/log10-ieee.m4
+++ b/m4/log10-ieee.m4
@@ -1,5 +1,5 @@
 # log10-ieee.m4 serial 1
-dnl Copyright (C) 2012-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/log10.m4 b/m4/log10.m4
index c619391315..2e79912ea2 100644
--- a/m4/log10.m4
+++ b/m4/log10.m4
@@ -1,5 +1,5 @@
 # log10.m4 serial 11
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/log10f-ieee.m4 b/m4/log10f-ieee.m4
index 124b901150..da6f8dfe2b 100644
--- a/m4/log10f-ieee.m4
+++ b/m4/log10f-ieee.m4
@@ -1,5 +1,5 @@
 # log10f-ieee.m4 serial 1
-dnl Copyright (C) 2012-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/log10f.m4 b/m4/log10f.m4
index 9244e6bbe7..e5f952ccf3 100644
--- a/m4/log10f.m4
+++ b/m4/log10f.m4
@@ -1,5 +1,5 @@
 # log10f.m4 serial 12
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/log10l.m4 b/m4/log10l.m4
index d716bb9c11..f67d89bfaf 100644
--- a/m4/log10l.m4
+++ b/m4/log10l.m4
@@ -1,5 +1,5 @@
 # log10l.m4 serial 10
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/log1p-ieee.m4 b/m4/log1p-ieee.m4
index 8e12b45036..4c8f9b46c3 100644
--- a/m4/log1p-ieee.m4
+++ b/m4/log1p-ieee.m4
@@ -1,5 +1,5 @@
 # log1p-ieee.m4 serial 1
-dnl Copyright (C) 2012-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/log1p.m4 b/m4/log1p.m4
index 7536eaf4cb..56b11af0f0 100644
--- a/m4/log1p.m4
+++ b/m4/log1p.m4
@@ -1,5 +1,5 @@
 # log1p.m4 serial 8
-dnl Copyright (C) 2012-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/log1pf-ieee.m4 b/m4/log1pf-ieee.m4
index bc27314efd..5681e590c7 100644
--- a/m4/log1pf-ieee.m4
+++ b/m4/log1pf-ieee.m4
@@ -1,5 +1,5 @@
 # log1pf-ieee.m4 serial 1
-dnl Copyright (C) 2012-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/log1pf.m4 b/m4/log1pf.m4
index 477fe6ca90..6a950a086a 100644
--- a/m4/log1pf.m4
+++ b/m4/log1pf.m4
@@ -1,5 +1,5 @@
 # log1pf.m4 serial 8
-dnl Copyright (C) 2012-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/log1pl-ieee.m4 b/m4/log1pl-ieee.m4
index 7a90b2f6cc..adc33834fa 100644
--- a/m4/log1pl-ieee.m4
+++ b/m4/log1pl-ieee.m4
@@ -1,5 +1,5 @@
 # log1pl-ieee.m4 serial 1
-dnl Copyright (C) 2012-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/log1pl.m4 b/m4/log1pl.m4
index 062e283ac3..280e629d89 100644
--- a/m4/log1pl.m4
+++ b/m4/log1pl.m4
@@ -1,5 +1,5 @@
 # log1pl.m4 serial 9
-dnl Copyright (C) 2012-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/log2-ieee.m4 b/m4/log2-ieee.m4
index df0aab8c23..cb9544807c 100644
--- a/m4/log2-ieee.m4
+++ b/m4/log2-ieee.m4
@@ -1,5 +1,5 @@
 # log2-ieee.m4 serial 1
-dnl Copyright (C) 2012-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/log2.m4 b/m4/log2.m4
index 586c428dac..acf092fed1 100644
--- a/m4/log2.m4
+++ b/m4/log2.m4
@@ -1,5 +1,5 @@
 # log2.m4 serial 10
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/log2f-ieee.m4 b/m4/log2f-ieee.m4
index b282ea280c..c6b8cb422b 100644
--- a/m4/log2f-ieee.m4
+++ b/m4/log2f-ieee.m4
@@ -1,5 +1,5 @@
 # log2f-ieee.m4 serial 1
-dnl Copyright (C) 2012-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/log2f.m4 b/m4/log2f.m4
index 8cf530a9a1..f9da22e097 100644
--- a/m4/log2f.m4
+++ b/m4/log2f.m4
@@ -1,5 +1,5 @@
 # log2f.m4 serial 10
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/log2l.m4 b/m4/log2l.m4
index 6747dce8a1..f65c00398e 100644
--- a/m4/log2l.m4
+++ b/m4/log2l.m4
@@ -1,5 +1,5 @@
 # log2l.m4 serial 3
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/logb.m4 b/m4/logb.m4
index 52160389e3..94ce725175 100644
--- a/m4/logb.m4
+++ b/m4/logb.m4
@@ -1,5 +1,5 @@
 # logb.m4 serial 9
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/logbf.m4 b/m4/logbf.m4
index 5daa173901..fcb7f46763 100644
--- a/m4/logbf.m4
+++ b/m4/logbf.m4
@@ -1,5 +1,5 @@
 # logbf.m4 serial 3
-dnl Copyright (C) 2012-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/logbl.m4 b/m4/logbl.m4
index 69af10094b..ef38e80ba3 100644
--- a/m4/logbl.m4
+++ b/m4/logbl.m4
@@ -1,5 +1,5 @@
 # logbl.m4 serial 5
-dnl Copyright (C) 2012-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/logf-ieee.m4 b/m4/logf-ieee.m4
index 1b8ba94615..463434e2cd 100644
--- a/m4/logf-ieee.m4
+++ b/m4/logf-ieee.m4
@@ -1,5 +1,5 @@
 # logf-ieee.m4 serial 1
-dnl Copyright (C) 2012-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/logf.m4 b/m4/logf.m4
index 3b3cf0c50c..2c546779a4 100644
--- a/m4/logf.m4
+++ b/m4/logf.m4
@@ -1,5 +1,5 @@
 # logf.m4 serial 12
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/logl.m4 b/m4/logl.m4
index 6bc17806a7..316b24d161 100644
--- a/m4/logl.m4
+++ b/m4/logl.m4
@@ -1,5 +1,5 @@
 # logl.m4 serial 15
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/longlong.m4 b/m4/longlong.m4
index 7894a97cc2..0086fc44dd 100644
--- a/m4/longlong.m4
+++ b/m4/longlong.m4
@@ -1,5 +1,5 @@
 # longlong.m4 serial 19
-dnl Copyright (C) 1999-2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 1999-2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/lseek.m4 b/m4/lseek.m4
index 0583511e82..fd4f1f27d3 100644
--- a/m4/lseek.m4
+++ b/m4/lseek.m4
@@ -1,5 +1,5 @@
 # lseek.m4 serial 12
-dnl Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/lstat.m4 b/m4/lstat.m4
index d987060bd1..7e667fb187 100644
--- a/m4/lstat.m4
+++ b/m4/lstat.m4
@@ -1,6 +1,6 @@
 # serial 33
 
-# Copyright (C) 1997-2001, 2003-2022 Free Software Foundation, Inc.
+# Copyright (C) 1997-2001, 2003-2023 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
diff --git a/m4/malloc-align.m4 b/m4/malloc-align.m4
index 1317773fe0..11682da01a 100644
--- a/m4/malloc-align.m4
+++ b/m4/malloc-align.m4
@@ -1,5 +1,5 @@
 # malloc-align.m4 serial 1
-dnl Copyright (C) 2020-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2020-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/malloc.m4 b/m4/malloc.m4
index 6b76c1e64d..554029243d 100644
--- a/m4/malloc.m4
+++ b/m4/malloc.m4
@@ -1,5 +1,5 @@
 # malloc.m4 serial 28
-dnl Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/malloc_h.m4 b/m4/malloc_h.m4
index d6b2a4adb5..f2e649158a 100644
--- a/m4/malloc_h.m4
+++ b/m4/malloc_h.m4
@@ -1,5 +1,5 @@
 # malloc_h.m4 serial 4
-dnl Copyright (C) 2020-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2020-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/malloca.m4 b/m4/malloca.m4
index 77eb96a091..1d777ebe6d 100644
--- a/m4/malloca.m4
+++ b/m4/malloca.m4
@@ -1,5 +1,5 @@
 # malloca.m4 serial 2
-dnl Copyright (C) 2003-2004, 2006-2007, 2009-2022 Free Software Foundation,
+dnl Copyright (C) 2003-2004, 2006-2007, 2009-2023 Free Software Foundation,
 dnl Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
diff --git a/m4/manywarnings-c++.m4 b/m4/manywarnings-c++.m4
index ba3891864a..34fc74ec2c 100644
--- a/m4/manywarnings-c++.m4
+++ b/m4/manywarnings-c++.m4
@@ -1,5 +1,5 @@
 # manywarnings-c++.m4 serial 3
-dnl Copyright (C) 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/manywarnings.m4 b/m4/manywarnings.m4
index f4b5853f02..2fac86e20b 100644
--- a/m4/manywarnings.m4
+++ b/m4/manywarnings.m4
@@ -1,5 +1,5 @@
 # manywarnings.m4 serial 23
-dnl Copyright (C) 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/math_h.m4 b/m4/math_h.m4
index a08526a7a5..d2e90ff1eb 100644
--- a/m4/math_h.m4
+++ b/m4/math_h.m4
@@ -1,5 +1,5 @@
 # math_h.m4 serial 125
-dnl Copyright (C) 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/mathfunc.m4 b/m4/mathfunc.m4
index 34f5e76c42..4cdd0a9001 100644
--- a/m4/mathfunc.m4
+++ b/m4/mathfunc.m4
@@ -1,5 +1,5 @@
 # mathfunc.m4 serial 12
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/mbchar.m4 b/m4/mbchar.m4
index 22673922a2..aed40a53c6 100644
--- a/m4/mbchar.m4
+++ b/m4/mbchar.m4
@@ -1,5 +1,5 @@
 # mbchar.m4 serial 9
-dnl Copyright (C) 2005-2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2005-2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/mbfile.m4 b/m4/mbfile.m4
index d4e1c3f2d2..83068a9971 100644
--- a/m4/mbfile.m4
+++ b/m4/mbfile.m4
@@ -1,5 +1,5 @@
 # mbfile.m4 serial 7
-dnl Copyright (C) 2005, 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2005, 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/mbiter.m4 b/m4/mbiter.m4
index 7815edb0a2..8e879dc4b9 100644
--- a/m4/mbiter.m4
+++ b/m4/mbiter.m4
@@ -1,5 +1,5 @@
 # mbiter.m4 serial 7
-dnl Copyright (C) 2005, 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2005, 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/mbrlen.m4 b/m4/mbrlen.m4
index 3cb21afcf0..c3f0494493 100644
--- a/m4/mbrlen.m4
+++ b/m4/mbrlen.m4
@@ -1,5 +1,5 @@
 # mbrlen.m4 serial 11  -*- coding: utf-8 -*-
-dnl Copyright (C) 2008, 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2008, 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/mbrtoc32.m4 b/m4/mbrtoc32.m4
index 91c8c55685..082497d2f1 100644
--- a/m4/mbrtoc32.m4
+++ b/m4/mbrtoc32.m4
@@ -1,5 +1,5 @@
 # mbrtoc32.m4 serial 9
-dnl Copyright (C) 2014-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2014-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/mbrtowc.m4 b/m4/mbrtowc.m4
index ec8716b599..bb39304199 100644
--- a/m4/mbrtowc.m4
+++ b/m4/mbrtowc.m4
@@ -1,5 +1,5 @@
 # mbrtowc.m4 serial 38  -*- coding: utf-8 -*-
-dnl Copyright (C) 2001-2002, 2004-2005, 2008-2022 Free Software Foundation,
+dnl Copyright (C) 2001-2002, 2004-2005, 2008-2023 Free Software Foundation,
 dnl Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
diff --git a/m4/mbsinit.m4 b/m4/mbsinit.m4
index ebd2d4ffbf..c388a8b9a1 100644
--- a/m4/mbsinit.m4
+++ b/m4/mbsinit.m4
@@ -1,5 +1,5 @@
 # mbsinit.m4 serial 9
-dnl Copyright (C) 2008, 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2008, 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/mbslen.m4 b/m4/mbslen.m4
index 168fbcdc54..a9e0ed2a58 100644
--- a/m4/mbslen.m4
+++ b/m4/mbslen.m4
@@ -1,5 +1,5 @@
 # mbslen.m4 serial 3
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/mbsnrtowcs.m4 b/m4/mbsnrtowcs.m4
index 0fab9e5e52..d36ba4797d 100644
--- a/m4/mbsnrtowcs.m4
+++ b/m4/mbsnrtowcs.m4
@@ -1,5 +1,5 @@
 # mbsnrtowcs.m4 serial 6
-dnl Copyright (C) 2008, 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2008, 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/mbsrtowcs.m4 b/m4/mbsrtowcs.m4
index f672fa5228..f95af621dd 100644
--- a/m4/mbsrtowcs.m4
+++ b/m4/mbsrtowcs.m4
@@ -1,5 +1,5 @@
 # mbsrtowcs.m4 serial 14
-dnl Copyright (C) 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/mbstate_t.m4 b/m4/mbstate_t.m4
index a6eba1bc12..dcd66b9613 100644
--- a/m4/mbstate_t.m4
+++ b/m4/mbstate_t.m4
@@ -1,5 +1,5 @@
 # mbstate_t.m4 serial 14
-dnl Copyright (C) 2000-2002, 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2000-2002, 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/mbswidth.m4 b/m4/mbswidth.m4
index b0a5d57da4..0b7f90273e 100644
--- a/m4/mbswidth.m4
+++ b/m4/mbswidth.m4
@@ -1,5 +1,5 @@
 # mbswidth.m4 serial 19
-dnl Copyright (C) 2000-2002, 2004, 2006-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2000-2002, 2004, 2006-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/mbtowc.m4 b/m4/mbtowc.m4
index 2827e83351..7823be0e0c 100644
--- a/m4/mbtowc.m4
+++ b/m4/mbtowc.m4
@@ -1,5 +1,5 @@
 # mbtowc.m4 serial 3
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/md4.m4 b/m4/md4.m4
index b86fb10f54..8c3589fffe 100644
--- a/m4/md4.m4
+++ b/m4/md4.m4
@@ -1,5 +1,5 @@
 # md4.m4 serial 7
-dnl Copyright (C) 2002-2006, 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2006, 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/md5.m4 b/m4/md5.m4
index cefb9cfe8e..678489e5c5 100644
--- a/m4/md5.m4
+++ b/m4/md5.m4
@@ -1,5 +1,5 @@
 # md5.m4 serial 14
-dnl Copyright (C) 2002-2006, 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2006, 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/memalign.m4 b/m4/memalign.m4
index f908277e69..f355bd9c39 100644
--- a/m4/memalign.m4
+++ b/m4/memalign.m4
@@ -1,5 +1,5 @@
 # memalign.m4 serial 1
-dnl Copyright (C) 2020-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2020-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/memcasecmp.m4 b/m4/memcasecmp.m4
index 39232a8fd9..97b30d1432 100644
--- a/m4/memcasecmp.m4
+++ b/m4/memcasecmp.m4
@@ -1,5 +1,5 @@
 #serial 6
-dnl Copyright (C) 2005-2006, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2005-2006, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/memchr.m4 b/m4/memchr.m4
index c7489d8715..4f1aed0167 100644
--- a/m4/memchr.m4
+++ b/m4/memchr.m4
@@ -1,5 +1,5 @@
 # memchr.m4 serial 18
-dnl Copyright (C) 2002-2004, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2004, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/memcmp.m4 b/m4/memcmp.m4
index 14e8b2dfa0..374e7d34a7 100644
--- a/m4/memcmp.m4
+++ b/m4/memcmp.m4
@@ -1,5 +1,5 @@
 # memcmp.m4 serial 16
-dnl Copyright (C) 2002-2004, 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2004, 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/memcoll.m4 b/m4/memcoll.m4
index 88e00001d8..9b03150ed1 100644
--- a/m4/memcoll.m4
+++ b/m4/memcoll.m4
@@ -1,5 +1,5 @@
 # memcoll.m4 serial 11
-dnl Copyright (C) 2002-2003, 2005-2006, 2009-2022 Free Software Foundation,
+dnl Copyright (C) 2002-2003, 2005-2006, 2009-2023 Free Software Foundation,
 dnl Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
diff --git a/m4/memcpy.m4 b/m4/memcpy.m4
index 5b8f4a71fd..79ec0121ac 100644
--- a/m4/memcpy.m4
+++ b/m4/memcpy.m4
@@ -1,5 +1,5 @@
 # memcpy.m4 serial 4
-dnl Copyright (C) 2002, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/memmem.m4 b/m4/memmem.m4
index e01aa5c713..3cf46bc2e9 100644
--- a/m4/memmem.m4
+++ b/m4/memmem.m4
@@ -1,5 +1,5 @@
 # memmem.m4 serial 29
-dnl Copyright (C) 2002-2004, 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2004, 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/memmove.m4 b/m4/memmove.m4
index a44094d8d3..be98426057 100644
--- a/m4/memmove.m4
+++ b/m4/memmove.m4
@@ -1,5 +1,5 @@
 # memmove.m4 serial 4
-dnl Copyright (C) 2002, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/mempcpy.m4 b/m4/mempcpy.m4
index 1107eb4a46..55bee2ab7a 100644
--- a/m4/mempcpy.m4
+++ b/m4/mempcpy.m4
@@ -1,5 +1,5 @@
 # mempcpy.m4 serial 12
-dnl Copyright (C) 2003-2004, 2006-2007, 2009-2022 Free Software Foundation,
+dnl Copyright (C) 2003-2004, 2006-2007, 2009-2023 Free Software Foundation,
 dnl Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
diff --git a/m4/memrchr.m4 b/m4/memrchr.m4
index ec5e2083bc..7611ac7e3a 100644
--- a/m4/memrchr.m4
+++ b/m4/memrchr.m4
@@ -1,5 +1,5 @@
 # memrchr.m4 serial 11
-dnl Copyright (C) 2002-2003, 2005-2007, 2009-2022 Free Software Foundation,
+dnl Copyright (C) 2002-2003, 2005-2007, 2009-2023 Free Software Foundation,
 dnl Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
diff --git a/m4/memset.m4 b/m4/memset.m4
index 26897e513c..d42810baaf 100644
--- a/m4/memset.m4
+++ b/m4/memset.m4
@@ -1,5 +1,5 @@
 # memset.m4 serial 4
-dnl Copyright (C) 2002, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/memset_explicit.m4 b/m4/memset_explicit.m4
index 3d4dcb3095..9dcd89a758 100644
--- a/m4/memset_explicit.m4
+++ b/m4/memset_explicit.m4
@@ -1,4 +1,4 @@
-dnl Copyright 2022 Free Software Foundation, Inc.
+dnl Copyright 2022-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/memxor.m4 b/m4/memxor.m4
index f704d2792d..861079ed67 100644
--- a/m4/memxor.m4
+++ b/m4/memxor.m4
@@ -1,5 +1,5 @@
 # memxor.m4 serial 4
-dnl Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/mgetgroups.m4 b/m4/mgetgroups.m4
index 75ec8448c7..6c921f4412 100644
--- a/m4/mgetgroups.m4
+++ b/m4/mgetgroups.m4
@@ -1,5 +1,5 @@
 #serial 5
-dnl Copyright (C) 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/minmax.m4 b/m4/minmax.m4
index b976739794..fd09846ffb 100644
--- a/m4/minmax.m4
+++ b/m4/minmax.m4
@@ -1,5 +1,5 @@
 # minmax.m4 serial 4
-dnl Copyright (C) 2005, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2005, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/minus-zero.m4 b/m4/minus-zero.m4
index 091413d51d..02925d2a2a 100644
--- a/m4/minus-zero.m4
+++ b/m4/minus-zero.m4
@@ -1,5 +1,5 @@
 # minus-zero.m4 serial 2
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/mkancesdirs.m4 b/m4/mkancesdirs.m4
index 0a0b74e087..d54a6a0788 100644
--- a/m4/mkancesdirs.m4
+++ b/m4/mkancesdirs.m4
@@ -1,5 +1,5 @@
 # Make a file's ancestor directories.
-dnl Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/mkdir-p.m4 b/m4/mkdir-p.m4
index 7aaa8edb95..3f07450bc3 100644
--- a/m4/mkdir-p.m4
+++ b/m4/mkdir-p.m4
@@ -1,5 +1,5 @@
 # mkdir-p.m4 serial 15
-dnl Copyright (C) 2002-2006, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2006, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/mkdir.m4 b/m4/mkdir.m4
index 8b78ce960c..adbca8efd2 100644
--- a/m4/mkdir.m4
+++ b/m4/mkdir.m4
@@ -1,6 +1,6 @@
 # serial 17
 
-# Copyright (C) 2001, 2003-2004, 2006, 2008-2022 Free Software Foundation, Inc.
+# Copyright (C) 2001, 2003-2004, 2006, 2008-2023 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
diff --git a/m4/mkdirat.m4 b/m4/mkdirat.m4
index 77a5cbfb93..0f5c4e1dde 100644
--- a/m4/mkdirat.m4
+++ b/m4/mkdirat.m4
@@ -1,5 +1,5 @@
 # mkdirat.m4 serial 1
-dnl Copyright (C) 2004-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2004-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/mkdtemp.m4 b/m4/mkdtemp.m4
index b616a9a757..f5dd4a88f4 100644
--- a/m4/mkdtemp.m4
+++ b/m4/mkdtemp.m4
@@ -1,5 +1,5 @@
 # mkdtemp.m4 serial 8
-dnl Copyright (C) 2001-2003, 2006-2007, 2009-2022 Free Software Foundation,
+dnl Copyright (C) 2001-2003, 2006-2007, 2009-2023 Free Software Foundation,
 dnl Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
diff --git a/m4/mkfifo.m4 b/m4/mkfifo.m4
index c8c7eb04bc..56d170edec 100644
--- a/m4/mkfifo.m4
+++ b/m4/mkfifo.m4
@@ -1,7 +1,7 @@
 # serial 9
 # See if we need to provide mkfifo replacement.
 
-dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/mkfifoat.m4 b/m4/mkfifoat.m4
index d7ce2126c9..cb324ff2a4 100644
--- a/m4/mkfifoat.m4
+++ b/m4/mkfifoat.m4
@@ -1,7 +1,7 @@
 # serial 5
 # See if we need to provide mkfifoat/mknodat replacement.
 
-dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/mknod.m4 b/m4/mknod.m4
index e5ab4ee65e..51fb3489ed 100644
--- a/m4/mknod.m4
+++ b/m4/mknod.m4
@@ -1,7 +1,7 @@
 # serial 8
 # See if we need to provide mknod replacement.
 
-dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/mkostemp.m4 b/m4/mkostemp.m4
index 2176f37296..a7cfac4cb8 100644
--- a/m4/mkostemp.m4
+++ b/m4/mkostemp.m4
@@ -1,5 +1,5 @@
 # mkostemp.m4 serial 2
-dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/mkostemps.m4 b/m4/mkostemps.m4
index 69993aed94..5af22ac831 100644
--- a/m4/mkostemps.m4
+++ b/m4/mkostemps.m4
@@ -1,5 +1,5 @@
 # mkostemps.m4 serial 2
-dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/mkstemp.m4 b/m4/mkstemp.m4
index 322f4bcd74..4a64045fea 100644
--- a/m4/mkstemp.m4
+++ b/m4/mkstemp.m4
@@ -1,6 +1,6 @@
 #serial 28
 
-# Copyright (C) 2001, 2003-2007, 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2001, 2003-2007, 2009-2023 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
diff --git a/m4/mkstemps.m4 b/m4/mkstemps.m4
index 966b982fad..d5cdca766c 100644
--- a/m4/mkstemps.m4
+++ b/m4/mkstemps.m4
@@ -1,5 +1,5 @@
 # mkstemps.m4 serial 2
-dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/mktime.m4 b/m4/mktime.m4
index 431b17dcb0..e9d31f35a4 100644
--- a/m4/mktime.m4
+++ b/m4/mktime.m4
@@ -1,5 +1,5 @@
 # serial 37
-dnl Copyright (C) 2002-2003, 2005-2007, 2009-2022 Free Software Foundation,
+dnl Copyright (C) 2002-2003, 2005-2007, 2009-2023 Free Software Foundation,
 dnl Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
diff --git a/m4/mmap-anon.m4 b/m4/mmap-anon.m4
index a4580ff944..d07d26e49e 100644
--- a/m4/mmap-anon.m4
+++ b/m4/mmap-anon.m4
@@ -1,5 +1,5 @@
 # mmap-anon.m4 serial 12
-dnl Copyright (C) 2005, 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2005, 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/mode_t.m4 b/m4/mode_t.m4
index e08d27a749..82197c0214 100644
--- a/m4/mode_t.m4
+++ b/m4/mode_t.m4
@@ -1,5 +1,5 @@
 # mode_t.m4 serial 2
-dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/modechange.m4 b/m4/modechange.m4
index e2f2392654..610dcba19b 100644
--- a/m4/modechange.m4
+++ b/m4/modechange.m4
@@ -1,5 +1,5 @@
 # modechange.m4 serial 7
-dnl Copyright (C) 2002-2003, 2005-2006, 2009-2022 Free Software Foundation,
+dnl Copyright (C) 2002-2003, 2005-2006, 2009-2023 Free Software Foundation,
 dnl Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
diff --git a/m4/modf-ieee.m4 b/m4/modf-ieee.m4
index dd29a4ece9..0e206dd7d7 100644
--- a/m4/modf-ieee.m4
+++ b/m4/modf-ieee.m4
@@ -1,5 +1,5 @@
 # modf-ieee.m4 serial 1
-dnl Copyright (C) 2012-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/modf.m4 b/m4/modf.m4
index 592b9e2fb0..f136ae5ffe 100644
--- a/m4/modf.m4
+++ b/m4/modf.m4
@@ -1,5 +1,5 @@
 # modf.m4 serial 9
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/modff-ieee.m4 b/m4/modff-ieee.m4
index 5d66655f83..4e6856cde6 100644
--- a/m4/modff-ieee.m4
+++ b/m4/modff-ieee.m4
@@ -1,5 +1,5 @@
 # modff-ieee.m4 serial 1
-dnl Copyright (C) 2012-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/modff.m4 b/m4/modff.m4
index 99394490e6..fcf07bee9e 100644
--- a/m4/modff.m4
+++ b/m4/modff.m4
@@ -1,5 +1,5 @@
 # modff.m4 serial 11
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/modfl-ieee.m4 b/m4/modfl-ieee.m4
index 1f94fcee88..9edb41aeaf 100644
--- a/m4/modfl-ieee.m4
+++ b/m4/modfl-ieee.m4
@@ -1,5 +1,5 @@
 # modfl-ieee.m4 serial 1
-dnl Copyright (C) 2012-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/modfl.m4 b/m4/modfl.m4
index 526bbf7efd..6fe9d0183e 100644
--- a/m4/modfl.m4
+++ b/m4/modfl.m4
@@ -1,5 +1,5 @@
 # modfl.m4 serial 8
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/monetary_h.m4 b/m4/monetary_h.m4
index b1c65f3314..652048d5a2 100644
--- a/m4/monetary_h.m4
+++ b/m4/monetary_h.m4
@@ -1,5 +1,5 @@
 # monetary_h.m4 serial 9
-dnl Copyright (C) 2017-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2017-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/mountlist.m4 b/m4/mountlist.m4
index a3f72dfd7f..a9b4edb9f0 100644
--- a/m4/mountlist.m4
+++ b/m4/mountlist.m4
@@ -1,5 +1,5 @@
 # serial 15
-dnl Copyright (C) 2002-2006, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2006, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/mprotect.m4 b/m4/mprotect.m4
index 1645b7b754..5e3412e246 100644
--- a/m4/mprotect.m4
+++ b/m4/mprotect.m4
@@ -1,5 +1,5 @@
 # mprotect.m4 serial 2
-dnl Copyright (C) 1993-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 1993-2023 Free Software Foundation, Inc.
 dnl This file is free software, distributed under the terms of the GNU
 dnl General Public License as published by the Free Software Foundation;
 dnl either version 2 of the License, or (at your option) any later version.
diff --git a/m4/mpsort.m4 b/m4/mpsort.m4
index b98799f606..7762358cb0 100644
--- a/m4/mpsort.m4
+++ b/m4/mpsort.m4
@@ -1,6 +1,6 @@
 # Sort a vector of pointers to data.
 
-# Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
diff --git a/m4/msvc-inval.m4 b/m4/msvc-inval.m4
index b32cf6eba7..8d9d21b529 100644
--- a/m4/msvc-inval.m4
+++ b/m4/msvc-inval.m4
@@ -1,5 +1,5 @@
 # msvc-inval.m4 serial 1
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/msvc-nothrow.m4 b/m4/msvc-nothrow.m4
index 16ceb1f15b..0263e49088 100644
--- a/m4/msvc-nothrow.m4
+++ b/m4/msvc-nothrow.m4
@@ -1,5 +1,5 @@
 # msvc-nothrow.m4 serial 1
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/multiarch.m4 b/m4/multiarch.m4
index 5d942765d4..3ba5b0f76c 100644
--- a/m4/multiarch.m4
+++ b/m4/multiarch.m4
@@ -1,5 +1,5 @@
 # multiarch.m4 serial 9
-dnl Copyright (C) 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/musl.m4 b/m4/musl.m4
index 111f75d300..73898f6934 100644
--- a/m4/musl.m4
+++ b/m4/musl.m4
@@ -1,5 +1,5 @@
 # musl.m4 serial 3
-dnl Copyright (C) 2019-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2019-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/nanosleep.m4 b/m4/nanosleep.m4
index dfe21f56d5..21ee5a21da 100644
--- a/m4/nanosleep.m4
+++ b/m4/nanosleep.m4
@@ -5,7 +5,7 @@ dnl Check for the nanosleep function.
 dnl If not found, use the supplied replacement.
 dnl
 
-# Copyright (C) 1999-2001, 2003-2022 Free Software Foundation, Inc.
+# Copyright (C) 1999-2001, 2003-2023 Free Software Foundation, Inc.
 
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
diff --git a/m4/net_if_h.m4 b/m4/net_if_h.m4
index 04502c1946..f8fad09e83 100644
--- a/m4/net_if_h.m4
+++ b/m4/net_if_h.m4
@@ -1,5 +1,5 @@
 # net_if_h.m4 serial 2
-dnl Copyright (C) 2006-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2006-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/netdb_h.m4 b/m4/netdb_h.m4
index d6a9d709c1..e6aa892580 100644
--- a/m4/netdb_h.m4
+++ b/m4/netdb_h.m4
@@ -1,5 +1,5 @@
 # netdb_h.m4 serial 15
-dnl Copyright (C) 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/netinet_in_h.m4 b/m4/netinet_in_h.m4
index de26fe859e..71154191eb 100644
--- a/m4/netinet_in_h.m4
+++ b/m4/netinet_in_h.m4
@@ -1,5 +1,5 @@
 # netinet_in_h.m4 serial 6
-dnl Copyright (C) 2006-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2006-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/nl_langinfo.m4 b/m4/nl_langinfo.m4
index d20a09cf8f..51e783ce86 100644
--- a/m4/nl_langinfo.m4
+++ b/m4/nl_langinfo.m4
@@ -1,5 +1,5 @@
 # nl_langinfo.m4 serial 8
-dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/nls.m4 b/m4/nls.m4
index 7c11c90f52..657244810b 100644
--- a/m4/nls.m4
+++ b/m4/nls.m4
@@ -1,5 +1,5 @@
 # nls.m4 serial 6 (gettext-0.20.2)
-dnl Copyright (C) 1995-2003, 2005-2006, 2008-2014, 2016, 2019-2022 Free
+dnl Copyright (C) 1995-2003, 2005-2006, 2008-2014, 2016, 2019-2023 Free
 dnl Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
diff --git a/m4/no-c++.m4 b/m4/no-c++.m4
index 70907478ca..ad49743b2f 100644
--- a/m4/no-c++.m4
+++ b/m4/no-c++.m4
@@ -1,5 +1,5 @@
 # no-c++.m4 serial 2
-dnl Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/nocrash.m4 b/m4/nocrash.m4
index 91f00c1bc9..6a76638761 100644
--- a/m4/nocrash.m4
+++ b/m4/nocrash.m4
@@ -1,5 +1,5 @@
 # nocrash.m4 serial 5
-dnl Copyright (C) 2005, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2005, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/non-recursive-gnulib-prefix-hack.m4 
b/m4/non-recursive-gnulib-prefix-hack.m4
index 2ef712785d..cbef3aee6d 100644
--- a/m4/non-recursive-gnulib-prefix-hack.m4
+++ b/m4/non-recursive-gnulib-prefix-hack.m4
@@ -1,4 +1,4 @@
-dnl Copyright (C) 2012-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/nonblocking.m4 b/m4/nonblocking.m4
index b9d232518a..f63d2aef4c 100644
--- a/m4/nonblocking.m4
+++ b/m4/nonblocking.m4
@@ -1,5 +1,5 @@
 # nonblocking.m4 serial 3
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/nproc.m4 b/m4/nproc.m4
index 5c220ae2c4..3065b7b9bf 100644
--- a/m4/nproc.m4
+++ b/m4/nproc.m4
@@ -1,5 +1,5 @@
 # nproc.m4 serial 5
-dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/nstrftime.m4 b/m4/nstrftime.m4
index 0f613048e3..04c0b63fbd 100644
--- a/m4/nstrftime.m4
+++ b/m4/nstrftime.m4
@@ -1,6 +1,6 @@
 # serial 37
 
-# Copyright (C) 1996-1997, 1999-2007, 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 1996-1997, 1999-2007, 2009-2023 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
diff --git a/m4/obstack-printf-posix.m4 b/m4/obstack-printf-posix.m4
index 2d427f403c..10f744c575 100644
--- a/m4/obstack-printf-posix.m4
+++ b/m4/obstack-printf-posix.m4
@@ -1,5 +1,5 @@
 # obstack-printf-posix.m4 serial 4
-dnl Copyright (C) 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/obstack-printf.m4 b/m4/obstack-printf.m4
index d1a3c77a00..dc893efb8b 100644
--- a/m4/obstack-printf.m4
+++ b/m4/obstack-printf.m4
@@ -1,5 +1,5 @@
 # obstack-printf.m4 serial 4
-dnl Copyright (C) 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/obstack.m4 b/m4/obstack.m4
index 3a26cba4b9..ef70a52093 100644
--- a/m4/obstack.m4
+++ b/m4/obstack.m4
@@ -1,6 +1,6 @@
 # See if we need to provide obstacks.
 
-dnl Copyright 1996-2022 Free Software Foundation, Inc.
+dnl Copyright 1996-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/off_t.m4 b/m4/off_t.m4
index 0890adafc3..880f347250 100644
--- a/m4/off_t.m4
+++ b/m4/off_t.m4
@@ -1,5 +1,5 @@
 # off_t.m4 serial 1
-dnl Copyright (C) 2012-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/omp_h.m4 b/m4/omp_h.m4
index 72d4b52064..c099303334 100644
--- a/m4/omp_h.m4
+++ b/m4/omp_h.m4
@@ -1,5 +1,5 @@
 # omp_h.m4 serial 1
-dnl Copyright (C) 2019-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2019-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/open-cloexec.m4 b/m4/open-cloexec.m4
index 16cd5ec4cb..fd572fcd1d 100644
--- a/m4/open-cloexec.m4
+++ b/m4/open-cloexec.m4
@@ -1,6 +1,6 @@
 # Test whether O_CLOEXEC is defined.
 
-dnl Copyright 2017-2022 Free Software Foundation, Inc.
+dnl Copyright 2017-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/open-slash.m4 b/m4/open-slash.m4
index 4fbf491a75..1f731f8ad8 100644
--- a/m4/open-slash.m4
+++ b/m4/open-slash.m4
@@ -1,5 +1,5 @@
 # open-slash.m4 serial 2
-dnl Copyright (C) 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/open.m4 b/m4/open.m4
index f82fd6cac1..94fa2bb753 100644
--- a/m4/open.m4
+++ b/m4/open.m4
@@ -1,5 +1,5 @@
 # open.m4 serial 15
-dnl Copyright (C) 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/openat.m4 b/m4/openat.m4
index de7479942c..bbbcad859c 100644
--- a/m4/openat.m4
+++ b/m4/openat.m4
@@ -1,7 +1,7 @@
 # serial 46
 # See if we need to use our replacement for Solaris' openat et al functions.
 
-dnl Copyright (C) 2004-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2004-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/opendir.m4 b/m4/opendir.m4
index 7816dc5463..2fb90b6d57 100644
--- a/m4/opendir.m4
+++ b/m4/opendir.m4
@@ -1,5 +1,5 @@
 # opendir.m4 serial 5
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/pagealign_alloc.m4 b/m4/pagealign_alloc.m4
index 193a4722c7..cdf2e182b4 100644
--- a/m4/pagealign_alloc.m4
+++ b/m4/pagealign_alloc.m4
@@ -1,5 +1,5 @@
 #serial 6
-dnl Copyright (C) 2005-2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2005-2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/parse-datetime.m4 b/m4/parse-datetime.m4
index 3c5320e268..7876b4118f 100644
--- a/m4/parse-datetime.m4
+++ b/m4/parse-datetime.m4
@@ -1,5 +1,5 @@
 # parse-datetime.m4 serial 27
-dnl Copyright (C) 2002-2006, 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2006, 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/passfd.m4 b/m4/passfd.m4
index afe29c071b..3054a05028 100644
--- a/m4/passfd.m4
+++ b/m4/passfd.m4
@@ -1,5 +1,5 @@
 # passfd.m4 serial 9
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/pathmax.m4 b/m4/pathmax.m4
index 44add9905e..6d47d2c026 100644
--- a/m4/pathmax.m4
+++ b/m4/pathmax.m4
@@ -1,5 +1,5 @@
 # pathmax.m4 serial 11
-dnl Copyright (C) 2002-2003, 2005-2006, 2009-2022 Free Software Foundation,
+dnl Copyright (C) 2002-2003, 2005-2006, 2009-2023 Free Software Foundation,
 dnl Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
diff --git a/m4/pclose.m4 b/m4/pclose.m4
index 60aa3dcdb5..02dca1e380 100644
--- a/m4/pclose.m4
+++ b/m4/pclose.m4
@@ -1,5 +1,5 @@
 # pclose.m4 serial 1
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/perl.m4 b/m4/perl.m4
index 74d05ffa78..d9ff7905a4 100644
--- a/m4/perl.m4
+++ b/m4/perl.m4
@@ -3,7 +3,7 @@
 dnl From Jim Meyering.
 dnl Find a new-enough version of Perl.
 
-# Copyright (C) 1998-2001, 2003-2004, 2007, 2009-2022 Free Software Foundation,
+# Copyright (C) 1998-2001, 2003-2004, 2007, 2009-2023 Free Software Foundation,
 # Inc.
 #
 # This file is free software; the Free Software Foundation
diff --git a/m4/perror.m4 b/m4/perror.m4
index 02d44ca21c..3ff029de76 100644
--- a/m4/perror.m4
+++ b/m4/perror.m4
@@ -1,5 +1,5 @@
 # perror.m4 serial 10
-dnl Copyright (C) 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/physmem.m4 b/m4/physmem.m4
index aa92b251f3..d18a3d9e37 100644
--- a/m4/physmem.m4
+++ b/m4/physmem.m4
@@ -1,5 +1,5 @@
 # physmem.m4 serial 12
-dnl Copyright (C) 2002-2003, 2005-2006, 2008-2022 Free Software Foundation,
+dnl Copyright (C) 2002-2003, 2005-2006, 2008-2023 Free Software Foundation,
 dnl Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
diff --git a/m4/pid_t.m4 b/m4/pid_t.m4
index cb26f3612e..0fd7d0a181 100644
--- a/m4/pid_t.m4
+++ b/m4/pid_t.m4
@@ -1,5 +1,5 @@
 # pid_t.m4 serial 4
-dnl Copyright (C) 2020-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2020-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/pipe.m4 b/m4/pipe.m4
index 62871c6d3c..1ad6688f35 100644
--- a/m4/pipe.m4
+++ b/m4/pipe.m4
@@ -1,5 +1,5 @@
 # pipe.m4 serial 2
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/pipe2.m4 b/m4/pipe2.m4
index b752247825..501f3a4303 100644
--- a/m4/pipe2.m4
+++ b/m4/pipe2.m4
@@ -1,5 +1,5 @@
 # pipe2.m4 serial 2
-dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/po.m4 b/m4/po.m4
index ace6f960ae..26a5a6f5ff 100644
--- a/m4/po.m4
+++ b/m4/po.m4
@@ -1,5 +1,5 @@
 # po.m4 serial 31 (gettext-0.20.2)
-dnl Copyright (C) 1995-2014, 2016, 2018-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 1995-2014, 2016, 2018-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/poll.m4 b/m4/poll.m4
index 4a9a6a8d8a..3039a603e7 100644
--- a/m4/poll.m4
+++ b/m4/poll.m4
@@ -1,5 +1,5 @@
 # poll.m4 serial 20
-dnl Copyright (c) 2003, 2005-2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (c) 2003, 2005-2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/poll_h.m4 b/m4/poll_h.m4
index 8fc437bf94..9d5561c0b0 100644
--- a/m4/poll_h.m4
+++ b/m4/poll_h.m4
@@ -1,5 +1,5 @@
 # poll_h.m4 serial 6
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/popen.m4 b/m4/popen.m4
index 8568809be6..e546548a46 100644
--- a/m4/popen.m4
+++ b/m4/popen.m4
@@ -1,5 +1,5 @@
 # popen.m4 serial 6
-dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/posix-shell.m4 b/m4/posix-shell.m4
index dd7a0f6dcb..30c9d77dce 100644
--- a/m4/posix-shell.m4
+++ b/m4/posix-shell.m4
@@ -1,6 +1,6 @@
 # Find a POSIX-conforming shell.
 
-# Copyright (C) 2007-2022 Free Software Foundation, Inc.
+# Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
diff --git a/m4/posix_memalign.m4 b/m4/posix_memalign.m4
index 072e7ccdad..b29f573adf 100644
--- a/m4/posix_memalign.m4
+++ b/m4/posix_memalign.m4
@@ -1,5 +1,5 @@
 # posix_memalign.m4 serial 1
-dnl Copyright (C) 2020-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2020-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/posix_openpt.m4 b/m4/posix_openpt.m4
index af41d62a94..6ab66f5abf 100644
--- a/m4/posix_openpt.m4
+++ b/m4/posix_openpt.m4
@@ -1,5 +1,5 @@
 # posix_openpt.m4 serial 2
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/posix_spawn.m4 b/m4/posix_spawn.m4
index 86143b678a..de0bd00c2a 100644
--- a/m4/posix_spawn.m4
+++ b/m4/posix_spawn.m4
@@ -1,5 +1,5 @@
 # posix_spawn.m4 serial 22
-dnl Copyright (C) 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/posix_spawn_faction_addchdir.m4 
b/m4/posix_spawn_faction_addchdir.m4
index 6b86a09332..6116a8e50d 100644
--- a/m4/posix_spawn_faction_addchdir.m4
+++ b/m4/posix_spawn_faction_addchdir.m4
@@ -1,5 +1,5 @@
 # posix_spawn_faction_addchdir.m4 serial 1
-dnl Copyright (C) 2018-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2018-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/posix_spawn_faction_addfchdir.m4 
b/m4/posix_spawn_faction_addfchdir.m4
index 5897a0cffb..d5d156f255 100644
--- a/m4/posix_spawn_faction_addfchdir.m4
+++ b/m4/posix_spawn_faction_addfchdir.m4
@@ -1,5 +1,5 @@
 # posix_spawn_faction_addfchdir.m4 serial 1
-dnl Copyright (C) 2018-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2018-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/posixcheck.m4 b/m4/posixcheck.m4
index 1ee28b8fb8..afec81f6b5 100644
--- a/m4/posixcheck.m4
+++ b/m4/posixcheck.m4
@@ -1,5 +1,5 @@
 # posixcheck.m4 serial 1
-dnl Copyright (C) 2018-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2018-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/posixtm.m4 b/m4/posixtm.m4
index a361026972..68452b1748 100644
--- a/m4/posixtm.m4
+++ b/m4/posixtm.m4
@@ -1,5 +1,5 @@
 # posixtm.m4 serial 8
-dnl Copyright (C) 2002-2003, 2005-2007, 2009-2022 Free Software Foundation,
+dnl Copyright (C) 2002-2003, 2005-2007, 2009-2023 Free Software Foundation,
 dnl Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
diff --git a/m4/posixver.m4 b/m4/posixver.m4
index 1c45ce8c41..b1edd90f97 100644
--- a/m4/posixver.m4
+++ b/m4/posixver.m4
@@ -1,5 +1,5 @@
 # posixver.m4 serial 12
-dnl Copyright (C) 2002-2006, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2006, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/pow.m4 b/m4/pow.m4
index 848e87e61c..73c1abb416 100644
--- a/m4/pow.m4
+++ b/m4/pow.m4
@@ -1,5 +1,5 @@
 # pow.m4 serial 1
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/powf.m4 b/m4/powf.m4
index 1cdb2c937f..e57d7988ab 100644
--- a/m4/powf.m4
+++ b/m4/powf.m4
@@ -1,5 +1,5 @@
 # powf.m4 serial 2
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/pread.m4 b/m4/pread.m4
index cfbd28d718..ac3c1b7d51 100644
--- a/m4/pread.m4
+++ b/m4/pread.m4
@@ -1,5 +1,5 @@
 # pread.m4 serial 6
-dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/printf-frexp.m4 b/m4/printf-frexp.m4
index 0628b5ab04..8f5844a2c1 100644
--- a/m4/printf-frexp.m4
+++ b/m4/printf-frexp.m4
@@ -1,5 +1,5 @@
 # printf-frexp.m4 serial 5
-dnl Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/printf-frexpl.m4 b/m4/printf-frexpl.m4
index 137c8718bc..aee170ffd3 100644
--- a/m4/printf-frexpl.m4
+++ b/m4/printf-frexpl.m4
@@ -1,5 +1,5 @@
 # printf-frexpl.m4 serial 10
-dnl Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/printf-posix-rpl.m4 b/m4/printf-posix-rpl.m4
index 7c076e227c..36156d4350 100644
--- a/m4/printf-posix-rpl.m4
+++ b/m4/printf-posix-rpl.m4
@@ -1,5 +1,5 @@
 # printf-posix-rpl.m4 serial 4
-dnl Copyright (C) 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/printf.m4 b/m4/printf.m4
index 667452e34e..4e65abc6e6 100644
--- a/m4/printf.m4
+++ b/m4/printf.m4
@@ -1,5 +1,5 @@
 # printf.m4 serial 73
-dnl Copyright (C) 2003, 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2003, 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/priv-set.m4 b/m4/priv-set.m4
index 113c32abe2..00cbbd7476 100644
--- a/m4/priv-set.m4
+++ b/m4/priv-set.m4
@@ -1,6 +1,6 @@
 # serial 8
 
-# Copyright (C) 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2009-2023 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
diff --git a/m4/progtest.m4 b/m4/progtest.m4
index 4a5b0b4c6d..906567bbfa 100644
--- a/m4/progtest.m4
+++ b/m4/progtest.m4
@@ -1,5 +1,5 @@
 # progtest.m4 serial 9 (gettext-0.21.1)
-dnl Copyright (C) 1996-2003, 2005, 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 1996-2003, 2005, 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/pselect.m4 b/m4/pselect.m4
index 86114416cb..9f2b282cee 100644
--- a/m4/pselect.m4
+++ b/m4/pselect.m4
@@ -1,5 +1,5 @@
 # pselect.m4 serial 10
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/pthread-cond.m4 b/m4/pthread-cond.m4
index f35a80c32f..4eddeb7914 100644
--- a/m4/pthread-cond.m4
+++ b/m4/pthread-cond.m4
@@ -1,5 +1,5 @@
 # pthread-cond.m4 serial 2
-dnl Copyright (C) 2019-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2019-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/pthread-mutex.m4 b/m4/pthread-mutex.m4
index 8191f896b4..197c62ec6d 100644
--- a/m4/pthread-mutex.m4
+++ b/m4/pthread-mutex.m4
@@ -1,5 +1,5 @@
 # pthread-mutex.m4 serial 3
-dnl Copyright (C) 2019-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2019-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/pthread-once.m4 b/m4/pthread-once.m4
index 26697139e8..deac4609fc 100644
--- a/m4/pthread-once.m4
+++ b/m4/pthread-once.m4
@@ -1,5 +1,5 @@
 # pthread-once.m4 serial 1
-dnl Copyright (C) 2019-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2019-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/pthread-rwlock.m4 b/m4/pthread-rwlock.m4
index 798c3d3232..ac559e9cce 100644
--- a/m4/pthread-rwlock.m4
+++ b/m4/pthread-rwlock.m4
@@ -1,5 +1,5 @@
 # pthread-rwlock.m4 serial 2
-dnl Copyright (C) 2019-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2019-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/pthread-spin.m4 b/m4/pthread-spin.m4
index e64c6b1db6..d64bb682fb 100644
--- a/m4/pthread-spin.m4
+++ b/m4/pthread-spin.m4
@@ -1,5 +1,5 @@
 # pthread-spin.m4 serial 2
-dnl Copyright (C) 2019-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2019-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/pthread-thread.m4 b/m4/pthread-thread.m4
index 969628ea7b..aafd979385 100644
--- a/m4/pthread-thread.m4
+++ b/m4/pthread-thread.m4
@@ -1,5 +1,5 @@
 # pthread-thread.m4 serial 2
-dnl Copyright (C) 2019-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2019-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/pthread-tss.m4 b/m4/pthread-tss.m4
index 96826a021b..b1db2a6247 100644
--- a/m4/pthread-tss.m4
+++ b/m4/pthread-tss.m4
@@ -1,5 +1,5 @@
 # pthread-tss.m4 serial 1
-dnl Copyright (C) 2019-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2019-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/pthread_h.m4 b/m4/pthread_h.m4
index 4146aef382..0d536fc97a 100644
--- a/m4/pthread_h.m4
+++ b/m4/pthread_h.m4
@@ -1,5 +1,5 @@
 # pthread_h.m4 serial 8
-dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/pthread_mutex_timedlock.m4 b/m4/pthread_mutex_timedlock.m4
index 4caf8123c6..6686720805 100644
--- a/m4/pthread_mutex_timedlock.m4
+++ b/m4/pthread_mutex_timedlock.m4
@@ -1,5 +1,5 @@
 # pthread_mutex_timedlock.m4 serial 2
-dnl Copyright (C) 2019-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2019-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/pthread_rwlock_rdlock.m4 b/m4/pthread_rwlock_rdlock.m4
index 8ad783928b..ae6a885326 100644
--- a/m4/pthread_rwlock_rdlock.m4
+++ b/m4/pthread_rwlock_rdlock.m4
@@ -1,5 +1,5 @@
 # pthread_rwlock_rdlock.m4 serial 4
-dnl Copyright (C) 2017-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2017-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/pthread_sigmask.m4 b/m4/pthread_sigmask.m4
index 8282a371e4..5110668155 100644
--- a/m4/pthread_sigmask.m4
+++ b/m4/pthread_sigmask.m4
@@ -1,5 +1,5 @@
 # pthread_sigmask.m4 serial 21
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/ptsname.m4 b/m4/ptsname.m4
index 187cb224d4..dd3768a6a8 100644
--- a/m4/ptsname.m4
+++ b/m4/ptsname.m4
@@ -1,5 +1,5 @@
 # ptsname.m4 serial 8
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/ptsname_r.m4 b/m4/ptsname_r.m4
index 151f9a353a..a62bb01960 100644
--- a/m4/ptsname_r.m4
+++ b/m4/ptsname_r.m4
@@ -1,5 +1,5 @@
 # ptsname_r.m4 serial 8
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/pty.m4 b/m4/pty.m4
index 885b76b453..794678eb7a 100644
--- a/m4/pty.m4
+++ b/m4/pty.m4
@@ -1,5 +1,5 @@
 # pty.m4 serial 14
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/pty_h.m4 b/m4/pty_h.m4
index 08963cad30..1fce4b98e4 100644
--- a/m4/pty_h.m4
+++ b/m4/pty_h.m4
@@ -1,5 +1,5 @@
 # pty_h.m4 serial 14
-dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/putenv.m4 b/m4/putenv.m4
index c7b45034ea..cc8c74c053 100644
--- a/m4/putenv.m4
+++ b/m4/putenv.m4
@@ -1,5 +1,5 @@
 # putenv.m4 serial 25
-dnl Copyright (C) 2002-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/pwrite.m4 b/m4/pwrite.m4
index 37e400f98f..f77d4210d6 100644
--- a/m4/pwrite.m4
+++ b/m4/pwrite.m4
@@ -1,5 +1,5 @@
 # pwrite.m4 serial 6
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/qsort_r.m4 b/m4/qsort_r.m4
index 019d681451..4db88b24c4 100644
--- a/m4/qsort_r.m4
+++ b/m4/qsort_r.m4
@@ -1,6 +1,6 @@
 dnl Reentrant sort function.
 
-dnl Copyright 2014-2022 Free Software Foundation, Inc.
+dnl Copyright 2014-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/quote.m4 b/m4/quote.m4
index 47b1a0fcd0..551437fe71 100644
--- a/m4/quote.m4
+++ b/m4/quote.m4
@@ -1,5 +1,5 @@
 # quote.m4 serial 6
-dnl Copyright (C) 2002-2003, 2005-2006, 2009-2022 Free Software Foundation,
+dnl Copyright (C) 2002-2003, 2005-2006, 2009-2023 Free Software Foundation,
 dnl Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
diff --git a/m4/quotearg.m4 b/m4/quotearg.m4
index a07420fda1..15e4aa6851 100644
--- a/m4/quotearg.m4
+++ b/m4/quotearg.m4
@@ -1,5 +1,5 @@
 # quotearg.m4 serial 10
-dnl Copyright (C) 2002, 2004-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002, 2004-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/raise.m4 b/m4/raise.m4
index 0c78d09507..f20c439f18 100644
--- a/m4/raise.m4
+++ b/m4/raise.m4
@@ -1,5 +1,5 @@
 # raise.m4 serial 4
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/random.m4 b/m4/random.m4
index ade0bcbcfd..939a844029 100644
--- a/m4/random.m4
+++ b/m4/random.m4
@@ -1,5 +1,5 @@
 # random.m4 serial 4
-dnl Copyright (C) 2012-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/random_r.m4 b/m4/random_r.m4
index e7056dbc7f..5c161c3497 100644
--- a/m4/random_r.m4
+++ b/m4/random_r.m4
@@ -1,5 +1,5 @@
 # serial 5
-dnl Copyright (C) 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/rawmemchr.m4 b/m4/rawmemchr.m4
index dae419355a..a48d829526 100644
--- a/m4/rawmemchr.m4
+++ b/m4/rawmemchr.m4
@@ -1,5 +1,5 @@
 # rawmemchr.m4 serial 3
-dnl Copyright (C) 2003, 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2003, 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/read-file.m4 b/m4/read-file.m4
index a97cd1c097..dd0941041d 100644
--- a/m4/read-file.m4
+++ b/m4/read-file.m4
@@ -1,5 +1,5 @@
 # read-file.m4 serial 3
-dnl Copyright (C) 2002-2006, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2006, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/read.m4 b/m4/read.m4
index 1c199eabb1..333168919a 100644
--- a/m4/read.m4
+++ b/m4/read.m4
@@ -1,5 +1,5 @@
 # read.m4 serial 5
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/readdir.m4 b/m4/readdir.m4
index ff3d2ab7db..0a78739b3c 100644
--- a/m4/readdir.m4
+++ b/m4/readdir.m4
@@ -1,5 +1,5 @@
 # readdir.m4 serial 1
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/readline.m4 b/m4/readline.m4
index 22bb47a97d..e855c65090 100644
--- a/m4/readline.m4
+++ b/m4/readline.m4
@@ -1,5 +1,5 @@
 # readline.m4 serial 10
-dnl Copyright (C) 2005-2006, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2005-2006, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/readlink.m4 b/m4/readlink.m4
index d1dd521225..078b93aa9d 100644
--- a/m4/readlink.m4
+++ b/m4/readlink.m4
@@ -1,5 +1,5 @@
 # readlink.m4 serial 16
-dnl Copyright (C) 2003, 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2003, 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/readlinkat.m4 b/m4/readlinkat.m4
index 63c5205e11..ffd0b8e9bc 100644
--- a/m4/readlinkat.m4
+++ b/m4/readlinkat.m4
@@ -1,7 +1,7 @@
 # serial 6
 # See if we need to provide readlinkat replacement.
 
-dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/readtokens.m4 b/m4/readtokens.m4
index 935e42aad6..99fb292eb4 100644
--- a/m4/readtokens.m4
+++ b/m4/readtokens.m4
@@ -1,5 +1,5 @@
 # readtokens.m4 serial 6
-dnl Copyright (C) 2002-2003, 2005-2006, 2009-2022 Free Software Foundation,
+dnl Copyright (C) 2002-2003, 2005-2006, 2009-2023 Free Software Foundation,
 dnl Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
diff --git a/m4/readutmp.m4 b/m4/readutmp.m4
index 77e4b31d29..82254d21e8 100644
--- a/m4/readutmp.m4
+++ b/m4/readutmp.m4
@@ -1,5 +1,5 @@
 # readutmp.m4 serial 20
-dnl Copyright (C) 2002-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/realloc.m4 b/m4/realloc.m4
index 86e57c259f..d22138fc7a 100644
--- a/m4/realloc.m4
+++ b/m4/realloc.m4
@@ -1,5 +1,5 @@
 # realloc.m4 serial 26
-dnl Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/reallocarray.m4 b/m4/reallocarray.m4
index f39ab6ea16..1607b7a9ed 100644
--- a/m4/reallocarray.m4
+++ b/m4/reallocarray.m4
@@ -1,5 +1,5 @@
 # reallocarray.m4 serial 3
-dnl Copyright (C) 2017-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2017-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/regex.m4 b/m4/regex.m4
index 47342986d2..c89a1432a7 100644
--- a/m4/regex.m4
+++ b/m4/regex.m4
@@ -1,6 +1,6 @@
 # serial 73
 
-# Copyright (C) 1996-2001, 2003-2022 Free Software Foundation, Inc.
+# Copyright (C) 1996-2001, 2003-2023 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
diff --git a/m4/relocatable-lib.m4 b/m4/relocatable-lib.m4
index b8a33e77ce..dfde981e51 100644
--- a/m4/relocatable-lib.m4
+++ b/m4/relocatable-lib.m4
@@ -1,5 +1,5 @@
 # relocatable-lib.m4 serial 6
-dnl Copyright (C) 2003, 2005-2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2003, 2005-2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/relocatable.m4 b/m4/relocatable.m4
index e5740c5aa2..db3801a82c 100644
--- a/m4/relocatable.m4
+++ b/m4/relocatable.m4
@@ -1,5 +1,5 @@
 # relocatable.m4 serial 24
-dnl Copyright (C) 2003, 2005-2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2003, 2005-2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/remainder-ieee.m4 b/m4/remainder-ieee.m4
index 669f8ac17a..e936a89512 100644
--- a/m4/remainder-ieee.m4
+++ b/m4/remainder-ieee.m4
@@ -1,5 +1,5 @@
 # remainder-ieee.m4 serial 1
-dnl Copyright (C) 2012-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/remainder.m4 b/m4/remainder.m4
index f3b870eac3..be81485c3c 100644
--- a/m4/remainder.m4
+++ b/m4/remainder.m4
@@ -1,5 +1,5 @@
 # remainder.m4 serial 9
-dnl Copyright (C) 2012-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/remainderf-ieee.m4 b/m4/remainderf-ieee.m4
index 086acf0654..329f59f2eb 100644
--- a/m4/remainderf-ieee.m4
+++ b/m4/remainderf-ieee.m4
@@ -1,5 +1,5 @@
 # remainderf-ieee.m4 serial 1
-dnl Copyright (C) 2012-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/remainderf.m4 b/m4/remainderf.m4
index 35e37c6517..bc3dbc4b53 100644
--- a/m4/remainderf.m4
+++ b/m4/remainderf.m4
@@ -1,5 +1,5 @@
 # remainderf.m4 serial 13
-dnl Copyright (C) 2012-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/remainderl-ieee.m4 b/m4/remainderl-ieee.m4
index 21ded3ce52..5d66f5f702 100644
--- a/m4/remainderl-ieee.m4
+++ b/m4/remainderl-ieee.m4
@@ -1,5 +1,5 @@
 # remainderl-ieee.m4 serial 1
-dnl Copyright (C) 2012-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/remainderl.m4 b/m4/remainderl.m4
index c00c8ed11e..e893250bae 100644
--- a/m4/remainderl.m4
+++ b/m4/remainderl.m4
@@ -1,5 +1,5 @@
 # remainderl.m4 serial 13
-dnl Copyright (C) 2012-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/remove.m4 b/m4/remove.m4
index 5f65cf7eed..c76e097b43 100644
--- a/m4/remove.m4
+++ b/m4/remove.m4
@@ -1,5 +1,5 @@
 # remove.m4 serial 5
-dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/rename.m4 b/m4/rename.m4
index 9f1a56543d..c6359d8922 100644
--- a/m4/rename.m4
+++ b/m4/rename.m4
@@ -1,6 +1,6 @@
 # serial 33
 
-# Copyright (C) 2001, 2003, 2005-2006, 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2001, 2003, 2005-2006, 2009-2023 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
diff --git a/m4/renameat.m4 b/m4/renameat.m4
index e8f40d562d..7e38e436a3 100644
--- a/m4/renameat.m4
+++ b/m4/renameat.m4
@@ -1,7 +1,7 @@
 # serial 3
 # See if we need to provide renameat replacement.
 
-dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/rewinddir.m4 b/m4/rewinddir.m4
index 87c050f62b..dc2c37d97a 100644
--- a/m4/rewinddir.m4
+++ b/m4/rewinddir.m4
@@ -1,5 +1,5 @@
 # rewinddir.m4 serial 1
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/rint.m4 b/m4/rint.m4
index 26577772bd..ea422ca02e 100644
--- a/m4/rint.m4
+++ b/m4/rint.m4
@@ -1,5 +1,5 @@
 # rint.m4 serial 4
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/rintf.m4 b/m4/rintf.m4
index b6cff5f7f0..c2a57f1ddb 100644
--- a/m4/rintf.m4
+++ b/m4/rintf.m4
@@ -1,5 +1,5 @@
 # rintf.m4 serial 4
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/rintl.m4 b/m4/rintl.m4
index cfe3d6c81a..8841396395 100644
--- a/m4/rintl.m4
+++ b/m4/rintl.m4
@@ -1,5 +1,5 @@
 # rintl.m4 serial 8
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/rmdir-errno.m4 b/m4/rmdir-errno.m4
index 248b6acc1f..5f703f15fd 100644
--- a/m4/rmdir-errno.m4
+++ b/m4/rmdir-errno.m4
@@ -1,6 +1,6 @@
 # serial 14
 
-# Copyright (C) 2000-2001, 2005-2006, 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2000-2001, 2005-2006, 2009-2023 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
diff --git a/m4/rmdir.m4 b/m4/rmdir.m4
index 54880278d6..5cb88c8b62 100644
--- a/m4/rmdir.m4
+++ b/m4/rmdir.m4
@@ -1,5 +1,5 @@
 # rmdir.m4 serial 18
-dnl Copyright (C) 2002, 2005, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002, 2005, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/round-ieee.m4 b/m4/round-ieee.m4
index 2b85203ce9..efb6e59e82 100644
--- a/m4/round-ieee.m4
+++ b/m4/round-ieee.m4
@@ -1,5 +1,5 @@
 # round-ieee.m4 serial 1
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/round.m4 b/m4/round.m4
index 177bfdf62a..6e70a1fc06 100644
--- a/m4/round.m4
+++ b/m4/round.m4
@@ -1,5 +1,5 @@
 # round.m4 serial 23
-dnl Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/roundf-ieee.m4 b/m4/roundf-ieee.m4
index 64e0ad777e..1d2e7d819a 100644
--- a/m4/roundf-ieee.m4
+++ b/m4/roundf-ieee.m4
@@ -1,5 +1,5 @@
 # roundf-ieee.m4 serial 1
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/roundf.m4 b/m4/roundf.m4
index c9d53df6f4..f5b0056964 100644
--- a/m4/roundf.m4
+++ b/m4/roundf.m4
@@ -1,5 +1,5 @@
 # roundf.m4 serial 24
-dnl Copyright (C) 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/roundl-ieee.m4 b/m4/roundl-ieee.m4
index 1d6919ac63..caac829307 100644
--- a/m4/roundl-ieee.m4
+++ b/m4/roundl-ieee.m4
@@ -1,5 +1,5 @@
 # roundl-ieee.m4 serial 1
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/roundl.m4 b/m4/roundl.m4
index ae7b0ce407..9e9a8e1c06 100644
--- a/m4/roundl.m4
+++ b/m4/roundl.m4
@@ -1,5 +1,5 @@
 # roundl.m4 serial 20
-dnl Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/rpmatch.m4 b/m4/rpmatch.m4
index e5946f0acc..4a8bdf7ce4 100644
--- a/m4/rpmatch.m4
+++ b/m4/rpmatch.m4
@@ -1,5 +1,5 @@
 # rpmatch.m4 serial 10
-dnl Copyright (C) 2002-2003, 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2003, 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/safe-alloc.m4 b/m4/safe-alloc.m4
index 53439d6f6f..041f590e33 100644
--- a/m4/safe-alloc.m4
+++ b/m4/safe-alloc.m4
@@ -1,5 +1,5 @@
 # safe-alloc.m4 serial 2
-dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/safe-read.m4 b/m4/safe-read.m4
index 54d47699c4..fe4ab7576d 100644
--- a/m4/safe-read.m4
+++ b/m4/safe-read.m4
@@ -1,5 +1,5 @@
 # safe-read.m4 serial 6
-dnl Copyright (C) 2002-2003, 2005-2006, 2009-2022 Free Software Foundation,
+dnl Copyright (C) 2002-2003, 2005-2006, 2009-2023 Free Software Foundation,
 dnl Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
diff --git a/m4/safe-write.m4 b/m4/safe-write.m4
index 65c7911937..557e728c29 100644
--- a/m4/safe-write.m4
+++ b/m4/safe-write.m4
@@ -1,5 +1,5 @@
 # safe-write.m4 serial 4
-dnl Copyright (C) 2002, 2005-2006, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002, 2005-2006, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/same.m4 b/m4/same.m4
index 59d1716449..c42c1d1c2b 100644
--- a/m4/same.m4
+++ b/m4/same.m4
@@ -1,5 +1,5 @@
 #serial 10
-dnl Copyright (C) 2002-2003, 2005-2006, 2009-2022 Free Software Foundation,
+dnl Copyright (C) 2002-2003, 2005-2006, 2009-2023 Free Software Foundation,
 dnl Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
diff --git a/m4/save-cwd.m4 b/m4/save-cwd.m4
index 90073eeb4e..2e6cf58e8b 100644
--- a/m4/save-cwd.m4
+++ b/m4/save-cwd.m4
@@ -1,5 +1,5 @@
 # serial 10
-dnl Copyright (C) 2002-2006, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2006, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/savedir.m4 b/m4/savedir.m4
index afd0bfdeee..5d28f39c72 100644
--- a/m4/savedir.m4
+++ b/m4/savedir.m4
@@ -1,5 +1,5 @@
 # savedir.m4 serial 10
-dnl Copyright (C) 2002-2003, 2005-2006, 2009-2022 Free Software Foundation,
+dnl Copyright (C) 2002-2003, 2005-2006, 2009-2023 Free Software Foundation,
 dnl Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
diff --git a/m4/savewd.m4 b/m4/savewd.m4
index 1086445f01..a7fa25e4ad 100644
--- a/m4/savewd.m4
+++ b/m4/savewd.m4
@@ -1,6 +1,6 @@
 # Save and restore the working directory, possibly using a child process.
 
-dnl Copyright (C) 2004, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2004, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/scandir.m4 b/m4/scandir.m4
index c0d8942b16..a23a8f132c 100644
--- a/m4/scandir.m4
+++ b/m4/scandir.m4
@@ -1,5 +1,5 @@
 # scandir.m4 serial 2
-dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/sched_h.m4 b/m4/sched_h.m4
index ce44f7b368..980d2564b9 100644
--- a/m4/sched_h.m4
+++ b/m4/sched_h.m4
@@ -1,5 +1,5 @@
 # sched_h.m4 serial 15
-dnl Copyright (C) 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/sched_yield.m4 b/m4/sched_yield.m4
index d463a702bf..a1cb91e713 100644
--- a/m4/sched_yield.m4
+++ b/m4/sched_yield.m4
@@ -1,5 +1,5 @@
 # sched_yield.m4 serial 2
-dnl Copyright (C) 2019-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2019-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/search_h.m4 b/m4/search_h.m4
index 62f98f4d26..4fb2c77b09 100644
--- a/m4/search_h.m4
+++ b/m4/search_h.m4
@@ -1,5 +1,5 @@
 # search_h.m4 serial 15
-dnl Copyright (C) 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/secure_getenv.m4 b/m4/secure_getenv.m4
index 4e1dcdb873..85104e3488 100644
--- a/m4/secure_getenv.m4
+++ b/m4/secure_getenv.m4
@@ -1,5 +1,5 @@
 # Look up an environment variable more securely.
-dnl Copyright 2013-2022 Free Software Foundation, Inc.
+dnl Copyright 2013-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/select.m4 b/m4/select.m4
index 163f8fbf7f..96ffa13beb 100644
--- a/m4/select.m4
+++ b/m4/select.m4
@@ -1,5 +1,5 @@
 # select.m4 serial 13
-dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/selinux-context-h.m4 b/m4/selinux-context-h.m4
index e7947dc343..d465039be6 100644
--- a/m4/selinux-context-h.m4
+++ b/m4/selinux-context-h.m4
@@ -1,5 +1,5 @@
 # serial 4   -*- Autoconf -*-
-# Copyright (C) 2006-2007, 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2006-2007, 2009-2023 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
diff --git a/m4/selinux-label-h.m4 b/m4/selinux-label-h.m4
index bc988b040f..b4b5ce5bd5 100644
--- a/m4/selinux-label-h.m4
+++ b/m4/selinux-label-h.m4
@@ -1,4 +1,4 @@
-# Copyright 2020-2022 Free Software Foundation, Inc.
+# Copyright 2020-2023 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
diff --git a/m4/selinux-selinux-h.m4 b/m4/selinux-selinux-h.m4
index 6bfd30529e..f69eb3c375 100644
--- a/m4/selinux-selinux-h.m4
+++ b/m4/selinux-selinux-h.m4
@@ -1,5 +1,5 @@
 # serial 5   -*- Autoconf -*-
-# Copyright (C) 2006-2007, 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2006-2007, 2009-2023 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
diff --git a/m4/semaphore.m4 b/m4/semaphore.m4
index c6be7b94d6..edbed96110 100644
--- a/m4/semaphore.m4
+++ b/m4/semaphore.m4
@@ -1,5 +1,5 @@
 # semaphore.m4 serial 1
-dnl Copyright (C) 2019-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2019-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/servent.m4 b/m4/servent.m4
index c1b7d15460..0f35b8b8a0 100644
--- a/m4/servent.m4
+++ b/m4/servent.m4
@@ -1,5 +1,5 @@
 # servent.m4 serial 4
-dnl Copyright (C) 2008, 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2008, 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/setenv.m4 b/m4/setenv.m4
index 2000039ab5..16f9eb5531 100644
--- a/m4/setenv.m4
+++ b/m4/setenv.m4
@@ -1,5 +1,5 @@
 # setenv.m4 serial 30
-dnl Copyright (C) 2001-2004, 2006-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2001-2004, 2006-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/sethostname.m4 b/m4/sethostname.m4
index 78742d8abc..8bb9b5cce0 100644
--- a/m4/sethostname.m4
+++ b/m4/sethostname.m4
@@ -1,5 +1,5 @@
 # sethostname.m4 serial 1
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/setlocale.m4 b/m4/setlocale.m4
index c0023d9c52..e3777fc34c 100644
--- a/m4/setlocale.m4
+++ b/m4/setlocale.m4
@@ -1,5 +1,5 @@
 # setlocale.m4 serial 7
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/setlocale_null.m4 b/m4/setlocale_null.m4
index 09ea50eafb..032119d0f4 100644
--- a/m4/setlocale_null.m4
+++ b/m4/setlocale_null.m4
@@ -1,5 +1,5 @@
 # setlocale_null.m4 serial 5
-dnl Copyright (C) 2019-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2019-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/settime.m4 b/m4/settime.m4
index 7c61e2c923..2bd7faae4b 100644
--- a/m4/settime.m4
+++ b/m4/settime.m4
@@ -1,5 +1,5 @@
 # settime.m4 serial 7
-dnl Copyright (C) 2002, 2004-2006, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002, 2004-2006, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/sh-filename.m4 b/m4/sh-filename.m4
index f5b11eaf44..f30a620107 100644
--- a/m4/sh-filename.m4
+++ b/m4/sh-filename.m4
@@ -1,5 +1,5 @@
 # sh-filename.m4 serial 3
-dnl Copyright (C) 2018-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2018-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/sha1.m4 b/m4/sha1.m4
index 0d7abc7245..16b79c0868 100644
--- a/m4/sha1.m4
+++ b/m4/sha1.m4
@@ -1,5 +1,5 @@
 # sha1.m4 serial 12
-dnl Copyright (C) 2002-2006, 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2006, 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/sha256.m4 b/m4/sha256.m4
index b3d8f92e9f..4d1d1dda15 100644
--- a/m4/sha256.m4
+++ b/m4/sha256.m4
@@ -1,5 +1,5 @@
 # sha256.m4 serial 8
-dnl Copyright (C) 2005, 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2005, 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/sha512.m4 b/m4/sha512.m4
index 31710575f7..b66dc726d8 100644
--- a/m4/sha512.m4
+++ b/m4/sha512.m4
@@ -1,5 +1,5 @@
 # sha512.m4 serial 9
-dnl Copyright (C) 2005-2006, 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2005-2006, 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/sig2str.m4 b/m4/sig2str.m4
index 6531606092..aee18efeef 100644
--- a/m4/sig2str.m4
+++ b/m4/sig2str.m4
@@ -1,5 +1,5 @@
 # serial 7
-dnl Copyright (C) 2002, 2005-2006, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002, 2005-2006, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/sig_atomic_t.m4 b/m4/sig_atomic_t.m4
index 2e8c48df72..268f13181e 100644
--- a/m4/sig_atomic_t.m4
+++ b/m4/sig_atomic_t.m4
@@ -1,5 +1,5 @@
 # sig_atomic_t.m4 serial 3
-dnl Copyright (C) 2003, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2003, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/sigabbrev_np.m4 b/m4/sigabbrev_np.m4
index 0a528e20b1..60d887bf02 100644
--- a/m4/sigabbrev_np.m4
+++ b/m4/sigabbrev_np.m4
@@ -1,5 +1,5 @@
 # sigabbrev_np.m4 serial 2
-dnl Copyright (C) 2020-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2020-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/sigaction.m4 b/m4/sigaction.m4
index 62c83e03dc..e981a74421 100644
--- a/m4/sigaction.m4
+++ b/m4/sigaction.m4
@@ -1,5 +1,5 @@
 # sigaction.m4 serial 7
-dnl Copyright (C) 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/sigaltstack.m4 b/m4/sigaltstack.m4
index f6e753392a..03180fc150 100644
--- a/m4/sigaltstack.m4
+++ b/m4/sigaltstack.m4
@@ -1,5 +1,5 @@
 # sigaltstack.m4 serial 15
-dnl Copyright (C) 2002-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2023 Free Software Foundation, Inc.
 dnl This file is free software, distributed under the terms of the GNU
 dnl General Public License.  As a special exception to the GNU General
 dnl Public License, this file may be distributed as part of a program
diff --git a/m4/sigdescr_np.m4 b/m4/sigdescr_np.m4
index 4ce3b01589..da44b432c0 100644
--- a/m4/sigdescr_np.m4
+++ b/m4/sigdescr_np.m4
@@ -1,5 +1,5 @@
 # sigdescr_np.m4 serial 2
-dnl Copyright (C) 2020-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2020-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/signal_h.m4 b/m4/signal_h.m4
index 4c05c6274f..cdd6812f97 100644
--- a/m4/signal_h.m4
+++ b/m4/signal_h.m4
@@ -1,5 +1,5 @@
 # signal_h.m4 serial 22
-dnl Copyright (C) 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/signalblocking.m4 b/m4/signalblocking.m4
index b586ef539e..81cc91a907 100644
--- a/m4/signalblocking.m4
+++ b/m4/signalblocking.m4
@@ -1,5 +1,5 @@
 # signalblocking.m4 serial 17
-dnl Copyright (C) 2001-2002, 2006-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2001-2002, 2006-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/signbit.m4 b/m4/signbit.m4
index 8a4114db6b..f957884340 100644
--- a/m4/signbit.m4
+++ b/m4/signbit.m4
@@ -1,5 +1,5 @@
 # signbit.m4 serial 20
-dnl Copyright (C) 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/sigpipe.m4 b/m4/sigpipe.m4
index e052444399..1b6ec4271e 100644
--- a/m4/sigpipe.m4
+++ b/m4/sigpipe.m4
@@ -1,5 +1,5 @@
 # sigpipe.m4 serial 3
-dnl Copyright (C) 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/sigsegv.m4 b/m4/sigsegv.m4
index d758b52ba3..4dec708b7e 100644
--- a/m4/sigsegv.m4
+++ b/m4/sigsegv.m4
@@ -1,5 +1,5 @@
 # sigsegv.m4 serial 1
-dnl Copyright (C) 2021-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2021-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/sin.m4 b/m4/sin.m4
index a5b7148a83..4018543730 100644
--- a/m4/sin.m4
+++ b/m4/sin.m4
@@ -1,5 +1,5 @@
 # sin.m4 serial 1
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/sinf.m4 b/m4/sinf.m4
index 4662b09684..ddfcd269f0 100644
--- a/m4/sinf.m4
+++ b/m4/sinf.m4
@@ -1,5 +1,5 @@
 # sinf.m4 serial 3
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/sinh.m4 b/m4/sinh.m4
index c72442c01a..4b0ad1d81f 100644
--- a/m4/sinh.m4
+++ b/m4/sinh.m4
@@ -1,5 +1,5 @@
 # sinh.m4 serial 1
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/sinhf.m4 b/m4/sinhf.m4
index 82045bef8d..195b80e76b 100644
--- a/m4/sinhf.m4
+++ b/m4/sinhf.m4
@@ -1,5 +1,5 @@
 # sinhf.m4 serial 3
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/sinl.m4 b/m4/sinl.m4
index 3ec41f5909..12ff767b6a 100644
--- a/m4/sinl.m4
+++ b/m4/sinl.m4
@@ -1,5 +1,5 @@
 # sinl.m4 serial 9
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/size_max.m4 b/m4/size_max.m4
index 1d6abaeaa6..0763366dfc 100644
--- a/m4/size_max.m4
+++ b/m4/size_max.m4
@@ -1,5 +1,5 @@
 # size_max.m4 serial 12
-dnl Copyright (C) 2003, 2005-2006, 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2003, 2005-2006, 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/sleep.m4 b/m4/sleep.m4
index e73651f526..4e566a1ddd 100644
--- a/m4/sleep.m4
+++ b/m4/sleep.m4
@@ -1,5 +1,5 @@
 # sleep.m4 serial 11
-dnl Copyright (C) 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/sm3.m4 b/m4/sm3.m4
index b7e4ca3d37..065691e947 100644
--- a/m4/sm3.m4
+++ b/m4/sm3.m4
@@ -1,5 +1,5 @@
 # sm3.m4 serial 2
-dnl Copyright (C) 2017-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2017-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/snprintf-posix.m4 b/m4/snprintf-posix.m4
index 94eee9e639..61a80a8aa8 100644
--- a/m4/snprintf-posix.m4
+++ b/m4/snprintf-posix.m4
@@ -1,5 +1,5 @@
 # snprintf-posix.m4 serial 14
-dnl Copyright (C) 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/snprintf.m4 b/m4/snprintf.m4
index 7420591c97..4b5fbdbf24 100644
--- a/m4/snprintf.m4
+++ b/m4/snprintf.m4
@@ -1,5 +1,5 @@
 # snprintf.m4 serial 7
-dnl Copyright (C) 2002-2004, 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2004, 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/socketlib.m4 b/m4/socketlib.m4
index b8bd0afa5a..a556af1ef3 100644
--- a/m4/socketlib.m4
+++ b/m4/socketlib.m4
@@ -1,5 +1,5 @@
 # socketlib.m4 serial 3
-dnl Copyright (C) 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/sockets.m4 b/m4/sockets.m4
index aa04acc3e7..ed9cb873fb 100644
--- a/m4/sockets.m4
+++ b/m4/sockets.m4
@@ -1,5 +1,5 @@
 # sockets.m4 serial 7
-dnl Copyright (C) 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/socklen.m4 b/m4/socklen.m4
index 1390ac41bd..1c63a85363 100644
--- a/m4/socklen.m4
+++ b/m4/socklen.m4
@@ -1,5 +1,5 @@
 # socklen.m4 serial 11
-dnl Copyright (C) 2005-2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2005-2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/sockpfaf.m4 b/m4/sockpfaf.m4
index b1c4068aca..6c6dc2f7da 100644
--- a/m4/sockpfaf.m4
+++ b/m4/sockpfaf.m4
@@ -1,5 +1,5 @@
 # sockpfaf.m4 serial 10
-dnl Copyright (C) 2004, 2006, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2004, 2006, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/sparcv8+.m4 b/m4/sparcv8+.m4
index 95cfa0e586..584c39d3ba 100644
--- a/m4/sparcv8+.m4
+++ b/m4/sparcv8+.m4
@@ -1,5 +1,5 @@
 # sparcv8+.m4 serial 1
-dnl Copyright (C) 2020-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2020-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/spawn-pipe.m4 b/m4/spawn-pipe.m4
index e5fda5c7f3..bf69078a6e 100644
--- a/m4/spawn-pipe.m4
+++ b/m4/spawn-pipe.m4
@@ -1,5 +1,5 @@
 # spawn-pipe.m4 serial 2
-dnl Copyright (C) 2004, 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2004, 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/spawn_h.m4 b/m4/spawn_h.m4
index 1b28d8036b..d2c5242326 100644
--- a/m4/spawn_h.m4
+++ b/m4/spawn_h.m4
@@ -1,5 +1,5 @@
 # spawn_h.m4 serial 21
-dnl Copyright (C) 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/sprintf-posix.m4 b/m4/sprintf-posix.m4
index 02b5ee1956..9d9258e17a 100644
--- a/m4/sprintf-posix.m4
+++ b/m4/sprintf-posix.m4
@@ -1,5 +1,5 @@
 # sprintf-posix.m4 serial 12
-dnl Copyright (C) 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/sqrt.m4 b/m4/sqrt.m4
index 16ac8a7621..aa272c5616 100644
--- a/m4/sqrt.m4
+++ b/m4/sqrt.m4
@@ -1,5 +1,5 @@
 # sqrt.m4 serial 3
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/sqrtf.m4 b/m4/sqrtf.m4
index cf7790388a..f59e6b06bf 100644
--- a/m4/sqrtf.m4
+++ b/m4/sqrtf.m4
@@ -1,5 +1,5 @@
 # sqrtf.m4 serial 3
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/sqrtl.m4 b/m4/sqrtl.m4
index 081f3283e6..d1a59564c5 100644
--- a/m4/sqrtl.m4
+++ b/m4/sqrtl.m4
@@ -1,5 +1,5 @@
 # sqrtl.m4 serial 11
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/ssize_t.m4 b/m4/ssize_t.m4
index 03b2b895b9..1c12c33ea0 100644
--- a/m4/ssize_t.m4
+++ b/m4/ssize_t.m4
@@ -1,5 +1,5 @@
 # ssize_t.m4 serial 5 (gettext-0.18.2)
-dnl Copyright (C) 2001-2003, 2006, 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2001-2003, 2006, 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/stack-direction.m4 b/m4/stack-direction.m4
index 924c5deb4e..7378d6841f 100644
--- a/m4/stack-direction.m4
+++ b/m4/stack-direction.m4
@@ -1,5 +1,5 @@
 # stack-direction.m4 serial 11
-dnl Copyright (C) 2002-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2023 Free Software Foundation, Inc.
 dnl This file is free software, distributed under the terms of the GNU
 dnl General Public License.  As a special exception to the GNU General
 dnl Public License, this file may be distributed as part of a program
diff --git a/m4/stat-size.m4 b/m4/stat-size.m4
index b603486b5d..009b56e5d2 100644
--- a/m4/stat-size.m4
+++ b/m4/stat-size.m4
@@ -1,6 +1,6 @@
 #serial 1
 
-# Copyright (C) 2011-2022 Free Software Foundation, Inc.
+# Copyright (C) 2011-2023 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
diff --git a/m4/stat-time.m4 b/m4/stat-time.m4
index 342857d39e..40993d5731 100644
--- a/m4/stat-time.m4
+++ b/m4/stat-time.m4
@@ -1,6 +1,6 @@
 # Checks for stat-related time functions.
 
-# Copyright (C) 1998-1999, 2001, 2003, 2005-2007, 2009-2022 Free Software
+# Copyright (C) 1998-1999, 2001, 2003, 2005-2007, 2009-2023 Free Software
 # Foundation, Inc.
 
 # This file is free software; the Free Software Foundation
diff --git a/m4/stat.m4 b/m4/stat.m4
index 916eb88619..4d241e27a1 100644
--- a/m4/stat.m4
+++ b/m4/stat.m4
@@ -1,6 +1,6 @@
 # serial 18
 
-# Copyright (C) 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2009-2023 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
diff --git a/m4/std-gnu11.m4 b/m4/std-gnu11.m4
index 5ca18607fe..4179470ec9 100644
--- a/m4/std-gnu11.m4
+++ b/m4/std-gnu11.m4
@@ -9,7 +9,7 @@
 m4_version_prereq([2.70], [], [
 
 
-# Copyright (C) 2001-2022 Free Software Foundation, Inc.
+# Copyright (C) 2001-2023 Free Software Foundation, Inc.
 
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/m4/stdalign.m4 b/m4/stdalign.m4
index 324e91dae2..b1438eeace 100644
--- a/m4/stdalign.m4
+++ b/m4/stdalign.m4
@@ -1,6 +1,6 @@
 # Check for alignas and alignof that conform to C23.
 
-dnl Copyright 2011-2022 Free Software Foundation, Inc.
+dnl Copyright 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/stdarg.m4 b/m4/stdarg.m4
index eafa86cb49..94787ccc5e 100644
--- a/m4/stdarg.m4
+++ b/m4/stdarg.m4
@@ -1,5 +1,5 @@
 # stdarg.m4 serial 8
-dnl Copyright (C) 2006, 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2006, 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/stdbool.m4 b/m4/stdbool.m4
index 18fe4b874f..d4d54d01e5 100644
--- a/m4/stdbool.m4
+++ b/m4/stdbool.m4
@@ -1,6 +1,6 @@
 # Check for stdbool.h that conforms to C99.
 
-dnl Copyright (C) 2002-2006, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2006, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/stddef_h.m4 b/m4/stddef_h.m4
index abfd203038..c0553d6f2f 100644
--- a/m4/stddef_h.m4
+++ b/m4/stddef_h.m4
@@ -1,5 +1,5 @@
 # stddef_h.m4 serial 12
-dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/stdint.m4 b/m4/stdint.m4
index c3f0894277..d6961b0993 100644
--- a/m4/stdint.m4
+++ b/m4/stdint.m4
@@ -1,5 +1,5 @@
 # stdint.m4 serial 61
-dnl Copyright (C) 2001-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2001-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/stdint_h.m4 b/m4/stdint_h.m4
index b8684b61a9..70349f6cb2 100644
--- a/m4/stdint_h.m4
+++ b/m4/stdint_h.m4
@@ -1,5 +1,5 @@
 # stdint_h.m4 serial 9
-dnl Copyright (C) 1997-2004, 2006, 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 1997-2004, 2006, 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/stdio_h.m4 b/m4/stdio_h.m4
index 42e96071f8..94271e11e7 100644
--- a/m4/stdio_h.m4
+++ b/m4/stdio_h.m4
@@ -1,5 +1,5 @@
 # stdio_h.m4 serial 59
-dnl Copyright (C) 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/stdlib_h.m4 b/m4/stdlib_h.m4
index 9e2096976f..e96be22f58 100644
--- a/m4/stdlib_h.m4
+++ b/m4/stdlib_h.m4
@@ -1,5 +1,5 @@
 # stdlib_h.m4 serial 66
-dnl Copyright (C) 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/stdnoreturn.m4 b/m4/stdnoreturn.m4
index c6549b4ff8..4631a1cb38 100644
--- a/m4/stdnoreturn.m4
+++ b/m4/stdnoreturn.m4
@@ -1,6 +1,6 @@
 # Check for stdnoreturn.h that conforms to C11.
 
-dnl Copyright 2012-2022 Free Software Foundation, Inc.
+dnl Copyright 2012-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/stpcpy.m4 b/m4/stpcpy.m4
index 241e68c8c5..e8a76bc34f 100644
--- a/m4/stpcpy.m4
+++ b/m4/stpcpy.m4
@@ -1,5 +1,5 @@
 # stpcpy.m4 serial 9
-dnl Copyright (C) 2002, 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002, 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/stpncpy.m4 b/m4/stpncpy.m4
index ad5f5d6ff8..7238329dc1 100644
--- a/m4/stpncpy.m4
+++ b/m4/stpncpy.m4
@@ -1,5 +1,5 @@
 # stpncpy.m4 serial 19
-dnl Copyright (C) 2002-2003, 2005-2007, 2009-2022 Free Software Foundation,
+dnl Copyright (C) 2002-2003, 2005-2007, 2009-2023 Free Software Foundation,
 dnl Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
diff --git a/m4/strcase.m4 b/m4/strcase.m4
index d1ffaba3ce..3cf740d234 100644
--- a/m4/strcase.m4
+++ b/m4/strcase.m4
@@ -1,5 +1,5 @@
 # strcase.m4 serial 12
-dnl Copyright (C) 2002, 2005-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002, 2005-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/strcasestr.m4 b/m4/strcasestr.m4
index 6344b7e51e..971e0b2314 100644
--- a/m4/strcasestr.m4
+++ b/m4/strcasestr.m4
@@ -1,5 +1,5 @@
 # strcasestr.m4 serial 28
-dnl Copyright (C) 2005, 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2005, 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/strchrnul.m4 b/m4/strchrnul.m4
index 630699b8f6..73e0649609 100644
--- a/m4/strchrnul.m4
+++ b/m4/strchrnul.m4
@@ -1,5 +1,5 @@
 # strchrnul.m4 serial 10
-dnl Copyright (C) 2003, 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2003, 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/strcspn.m4 b/m4/strcspn.m4
index 39ff4e38f5..5448d2ba0e 100644
--- a/m4/strcspn.m4
+++ b/m4/strcspn.m4
@@ -1,5 +1,5 @@
 # strcspn.m4 serial 4
-dnl Copyright (C) 2002-2003, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2003, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/strdup.m4 b/m4/strdup.m4
index da8899d166..ecfcdd0150 100644
--- a/m4/strdup.m4
+++ b/m4/strdup.m4
@@ -1,6 +1,6 @@
 # strdup.m4 serial 15
 
-dnl Copyright (C) 2002-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2023 Free Software Foundation, Inc.
 
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
diff --git a/m4/strerror.m4 b/m4/strerror.m4
index 4716649b9c..8879eb08bb 100644
--- a/m4/strerror.m4
+++ b/m4/strerror.m4
@@ -1,5 +1,5 @@
 # strerror.m4 serial 23
-dnl Copyright (C) 2002, 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002, 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/strerror_r.m4 b/m4/strerror_r.m4
index 23c3b423ba..fb4ae6b600 100644
--- a/m4/strerror_r.m4
+++ b/m4/strerror_r.m4
@@ -1,5 +1,5 @@
 # strerror_r.m4 serial 24
-dnl Copyright (C) 2002, 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002, 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/strerrorname_np.m4 b/m4/strerrorname_np.m4
index 461c6559c3..7e68bf7a91 100644
--- a/m4/strerrorname_np.m4
+++ b/m4/strerrorname_np.m4
@@ -1,5 +1,5 @@
 # strerrorname_np.m4 serial 2
-dnl Copyright (C) 2020-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2020-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/strfmon_l.m4 b/m4/strfmon_l.m4
index 8181c8a2dc..c635a5a515 100644
--- a/m4/strfmon_l.m4
+++ b/m4/strfmon_l.m4
@@ -1,5 +1,5 @@
 # strfmon_l.m4 serial 3
-dnl Copyright (C) 2017-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2017-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/strftime-fixes.m4 b/m4/strftime-fixes.m4
index e2459ac7de..ee587aa223 100644
--- a/m4/strftime-fixes.m4
+++ b/m4/strftime-fixes.m4
@@ -1,5 +1,5 @@
 # strftime-fixes.m4 serial 2
-dnl Copyright (C) 2017-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2017-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/string_h.m4 b/m4/string_h.m4
index 6069d4a752..5da3cc2529 100644
--- a/m4/string_h.m4
+++ b/m4/string_h.m4
@@ -1,6 +1,6 @@
 # Configure a GNU-like replacement for <string.h>.
 
-# Copyright (C) 2007-2022 Free Software Foundation, Inc.
+# Copyright (C) 2007-2023 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
diff --git a/m4/strings_h.m4 b/m4/strings_h.m4
index 6965b7c149..4c41221b15 100644
--- a/m4/strings_h.m4
+++ b/m4/strings_h.m4
@@ -1,7 +1,7 @@
 # Configure a replacement for <strings.h>.
 # serial 9
 
-# Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
diff --git a/m4/strncat.m4 b/m4/strncat.m4
index 627280cf6c..d8101457f8 100644
--- a/m4/strncat.m4
+++ b/m4/strncat.m4
@@ -1,5 +1,5 @@
 # strncat.m4 serial 6
-dnl Copyright (C) 2002-2004, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2004, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/strndup.m4 b/m4/strndup.m4
index a239d45a50..9ec9715c79 100644
--- a/m4/strndup.m4
+++ b/m4/strndup.m4
@@ -1,5 +1,5 @@
 # strndup.m4 serial 23
-dnl Copyright (C) 2002-2003, 2005-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2003, 2005-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/strnlen.m4 b/m4/strnlen.m4
index 0934274de7..d2cac59b6f 100644
--- a/m4/strnlen.m4
+++ b/m4/strnlen.m4
@@ -1,5 +1,5 @@
 # strnlen.m4 serial 14
-dnl Copyright (C) 2002-2003, 2005-2007, 2009-2022 Free Software Foundation,
+dnl Copyright (C) 2002-2003, 2005-2007, 2009-2023 Free Software Foundation,
 dnl Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
diff --git a/m4/strpbrk.m4 b/m4/strpbrk.m4
index b65c6e3281..e966a81494 100644
--- a/m4/strpbrk.m4
+++ b/m4/strpbrk.m4
@@ -1,5 +1,5 @@
 # strpbrk.m4 serial 7
-dnl Copyright (C) 2002-2003, 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2003, 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/strptime.m4 b/m4/strptime.m4
index 19a1eff2ec..e5d995ec90 100644
--- a/m4/strptime.m4
+++ b/m4/strptime.m4
@@ -1,5 +1,5 @@
 # strptime.m4 serial 8
-dnl Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/strsep.m4 b/m4/strsep.m4
index 602f96aba1..e0da09a325 100644
--- a/m4/strsep.m4
+++ b/m4/strsep.m4
@@ -1,5 +1,5 @@
 # strsep.m4 serial 11
-dnl Copyright (C) 2002-2004, 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2004, 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/strsignal.m4 b/m4/strsignal.m4
index 6d558e7134..9465be3165 100644
--- a/m4/strsignal.m4
+++ b/m4/strsignal.m4
@@ -1,5 +1,5 @@
 # strsignal.m4 serial 10
-dnl Copyright (C) 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/strstr.m4 b/m4/strstr.m4
index 6cc20727fc..7de203a7b7 100644
--- a/m4/strstr.m4
+++ b/m4/strstr.m4
@@ -1,5 +1,5 @@
 # strstr.m4 serial 24
-dnl Copyright (C) 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/strtod-obsolete.m4 b/m4/strtod-obsolete.m4
index e42fdf9c9c..22d5b14eb5 100644
--- a/m4/strtod-obsolete.m4
+++ b/m4/strtod-obsolete.m4
@@ -1,5 +1,5 @@
 # strtod-obsolete.m4 serial 1
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/strtod.m4 b/m4/strtod.m4
index 26882eb734..4440cbaa47 100644
--- a/m4/strtod.m4
+++ b/m4/strtod.m4
@@ -1,5 +1,5 @@
 # strtod.m4 serial 26
-dnl Copyright (C) 2002-2003, 2006-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2003, 2006-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/strtoimax.m4 b/m4/strtoimax.m4
index 08598936b3..db5cfb7aa9 100644
--- a/m4/strtoimax.m4
+++ b/m4/strtoimax.m4
@@ -1,5 +1,5 @@
 # strtoimax.m4 serial 16
-dnl Copyright (C) 2002-2004, 2006, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2004, 2006, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/strtok_r.m4 b/m4/strtok_r.m4
index 22185f5ae9..4c701ccc20 100644
--- a/m4/strtok_r.m4
+++ b/m4/strtok_r.m4
@@ -1,5 +1,5 @@
 # strtok_r.m4 serial 16
-dnl Copyright (C) 2002-2004, 2006-2007, 2009-2022 Free Software Foundation,
+dnl Copyright (C) 2002-2004, 2006-2007, 2009-2023 Free Software Foundation,
 dnl Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
diff --git a/m4/strtol.m4 b/m4/strtol.m4
index 23d2584667..7e3b0d0044 100644
--- a/m4/strtol.m4
+++ b/m4/strtol.m4
@@ -1,5 +1,5 @@
 # strtol.m4 serial 7
-dnl Copyright (C) 2002-2003, 2006, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2003, 2006, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/strtold.m4 b/m4/strtold.m4
index 8f1d107f25..5556aa7413 100644
--- a/m4/strtold.m4
+++ b/m4/strtold.m4
@@ -1,5 +1,5 @@
 # strtold.m4 serial 7
-dnl Copyright (C) 2002-2003, 2006-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2003, 2006-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/strtoll.m4 b/m4/strtoll.m4
index dc37d9984d..ede630c606 100644
--- a/m4/strtoll.m4
+++ b/m4/strtoll.m4
@@ -1,5 +1,5 @@
 # strtoll.m4 serial 9
-dnl Copyright (C) 2002, 2004, 2006, 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002, 2004, 2006, 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/strtoul.m4 b/m4/strtoul.m4
index ab3783eb96..30a83d7e19 100644
--- a/m4/strtoul.m4
+++ b/m4/strtoul.m4
@@ -1,5 +1,5 @@
 # strtoul.m4 serial 6
-dnl Copyright (C) 2002, 2006, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002, 2006, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/strtoull.m4 b/m4/strtoull.m4
index 8c8e30c618..a9b0ddf9f2 100644
--- a/m4/strtoull.m4
+++ b/m4/strtoull.m4
@@ -1,5 +1,5 @@
 # strtoull.m4 serial 9
-dnl Copyright (C) 2002, 2004, 2006, 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002, 2004, 2006, 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/strtoumax.m4 b/m4/strtoumax.m4
index df31400774..ede809cebb 100644
--- a/m4/strtoumax.m4
+++ b/m4/strtoumax.m4
@@ -1,5 +1,5 @@
 # strtoumax.m4 serial 13
-dnl Copyright (C) 2002-2004, 2006, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2004, 2006, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/strverscmp.m4 b/m4/strverscmp.m4
index cb273dd904..5128600a15 100644
--- a/m4/strverscmp.m4
+++ b/m4/strverscmp.m4
@@ -1,5 +1,5 @@
 # strverscmp.m4 serial 9
-dnl Copyright (C) 2002, 2005-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002, 2005-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/supersede.m4 b/m4/supersede.m4
index 13f1ce2819..53ce4ac153 100644
--- a/m4/supersede.m4
+++ b/m4/supersede.m4
@@ -1,5 +1,5 @@
 # supersede.m4 serial 1
-dnl Copyright (C) 2020-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2020-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/symlink.m4 b/m4/symlink.m4
index 5be2babbcb..7796ec8bbc 100644
--- a/m4/symlink.m4
+++ b/m4/symlink.m4
@@ -1,7 +1,7 @@
 # serial 9
 # See if we need to provide symlink replacement.
 
-dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/symlinkat.m4 b/m4/symlinkat.m4
index 4d7b823e36..24fa7685c4 100644
--- a/m4/symlinkat.m4
+++ b/m4/symlinkat.m4
@@ -1,7 +1,7 @@
 # serial 10
 # See if we need to provide symlinkat replacement.
 
-dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/sys_file_h.m4 b/m4/sys_file_h.m4
index 61bd733ee4..60d4e30569 100644
--- a/m4/sys_file_h.m4
+++ b/m4/sys_file_h.m4
@@ -1,7 +1,7 @@
 # Configure a replacement for <sys/file.h>.
 # serial 9
 
-# Copyright (C) 2008-2022 Free Software Foundation, Inc.
+# Copyright (C) 2008-2023 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
diff --git a/m4/sys_ioctl_h.m4 b/m4/sys_ioctl_h.m4
index be65364351..80f0510e81 100644
--- a/m4/sys_ioctl_h.m4
+++ b/m4/sys_ioctl_h.m4
@@ -1,5 +1,5 @@
 # sys_ioctl_h.m4 serial 15
-dnl Copyright (C) 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/sys_random_h.m4 b/m4/sys_random_h.m4
index a5ba85c67c..01d5feebb3 100644
--- a/m4/sys_random_h.m4
+++ b/m4/sys_random_h.m4
@@ -1,5 +1,5 @@
 # sys_random_h.m4 serial 8
-dnl Copyright (C) 2020-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2020-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/sys_resource_h.m4 b/m4/sys_resource_h.m4
index 400e4d0fa2..d31a725ead 100644
--- a/m4/sys_resource_h.m4
+++ b/m4/sys_resource_h.m4
@@ -1,5 +1,5 @@
 # sys_resource_h.m4 serial 5
-dnl Copyright (C) 2012-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2012-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/sys_select_h.m4 b/m4/sys_select_h.m4
index 2743cd1795..4ec5ed7a09 100644
--- a/m4/sys_select_h.m4
+++ b/m4/sys_select_h.m4
@@ -1,5 +1,5 @@
 # sys_select_h.m4 serial 23
-dnl Copyright (C) 2006-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2006-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/sys_socket_h.m4 b/m4/sys_socket_h.m4
index ba3ae68e61..98a10416ca 100644
--- a/m4/sys_socket_h.m4
+++ b/m4/sys_socket_h.m4
@@ -1,5 +1,5 @@
 # sys_socket_h.m4 serial 29
-dnl Copyright (C) 2005-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2005-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/sys_stat_h.m4 b/m4/sys_stat_h.m4
index 2adbfdeef4..ca57398aeb 100644
--- a/m4/sys_stat_h.m4
+++ b/m4/sys_stat_h.m4
@@ -1,5 +1,5 @@
 # sys_stat_h.m4 serial 42   -*- Autoconf -*-
-dnl Copyright (C) 2006-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2006-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/sys_time_h.m4 b/m4/sys_time_h.m4
index bc5e2b1364..45a1f8b024 100644
--- a/m4/sys_time_h.m4
+++ b/m4/sys_time_h.m4
@@ -1,7 +1,7 @@
 # Configure a replacement for <sys/time.h>.
 # serial 12
 
-# Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
diff --git a/m4/sys_times_h.m4 b/m4/sys_times_h.m4
index 5d26954e98..3d18b54b53 100644
--- a/m4/sys_times_h.m4
+++ b/m4/sys_times_h.m4
@@ -1,7 +1,7 @@
 # Configure a replacement for <sys/times.h>.
 # serial 11
 
-# Copyright (C) 2008-2022 Free Software Foundation, Inc.
+# Copyright (C) 2008-2023 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
diff --git a/m4/sys_types_h.m4 b/m4/sys_types_h.m4
index a5bef220c2..627671fbdf 100644
--- a/m4/sys_types_h.m4
+++ b/m4/sys_types_h.m4
@@ -1,5 +1,5 @@
 # sys_types_h.m4 serial 13
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/sys_uio_h.m4 b/m4/sys_uio_h.m4
index 36f55eadcd..93a65d26e1 100644
--- a/m4/sys_uio_h.m4
+++ b/m4/sys_uio_h.m4
@@ -1,5 +1,5 @@
 # sys_uio_h.m4 serial 3
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/sys_utsname_h.m4 b/m4/sys_utsname_h.m4
index 909544286e..fb0d790f02 100644
--- a/m4/sys_utsname_h.m4
+++ b/m4/sys_utsname_h.m4
@@ -1,5 +1,5 @@
 # sys_utsname_h.m4 serial 11
-dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/sys_wait_h.m4 b/m4/sys_wait_h.m4
index 0aa4f7ce80..36b4293362 100644
--- a/m4/sys_wait_h.m4
+++ b/m4/sys_wait_h.m4
@@ -1,5 +1,5 @@
 # sys_wait_h.m4 serial 9
-dnl Copyright (C) 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/sysexits.m4 b/m4/sysexits.m4
index fe590b3aca..5dfc193a31 100644
--- a/m4/sysexits.m4
+++ b/m4/sysexits.m4
@@ -1,5 +1,5 @@
 # sysexits.m4 serial 7
-dnl Copyright (C) 2003, 2005, 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2003, 2005, 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/tan.m4 b/m4/tan.m4
index df6b6d40c7..797695393f 100644
--- a/m4/tan.m4
+++ b/m4/tan.m4
@@ -1,5 +1,5 @@
 # tan.m4 serial 1
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/tanf.m4 b/m4/tanf.m4
index 565faf8be5..f2270b5fe4 100644
--- a/m4/tanf.m4
+++ b/m4/tanf.m4
@@ -1,5 +1,5 @@
 # tanf.m4 serial 3
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/tanh.m4 b/m4/tanh.m4
index 67b2114ed3..177769ce2c 100644
--- a/m4/tanh.m4
+++ b/m4/tanh.m4
@@ -1,5 +1,5 @@
 # tanh.m4 serial 1
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/tanhf.m4 b/m4/tanhf.m4
index f00c1f22b5..7310e75e5f 100644
--- a/m4/tanhf.m4
+++ b/m4/tanhf.m4
@@ -1,5 +1,5 @@
 # tanhf.m4 serial 3
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/tanl.m4 b/m4/tanl.m4
index e2df1b9a6c..292e8f96f2 100644
--- a/m4/tanl.m4
+++ b/m4/tanl.m4
@@ -1,5 +1,5 @@
 # tanl.m4 serial 9
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/tcgetsid.m4 b/m4/tcgetsid.m4
index 58f055df3f..368c9b442d 100644
--- a/m4/tcgetsid.m4
+++ b/m4/tcgetsid.m4
@@ -1,5 +1,5 @@
 # tcgetsid.m4 serial 5
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/tempname.m4 b/m4/tempname.m4
index 22ccec1f8d..abed7991da 100644
--- a/m4/tempname.m4
+++ b/m4/tempname.m4
@@ -1,6 +1,6 @@
 #serial 5
 
-# Copyright (C) 2006-2007, 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2006-2007, 2009-2023 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
diff --git a/m4/termcap.m4 b/m4/termcap.m4
index ce14890be5..ad6cca2a81 100644
--- a/m4/termcap.m4
+++ b/m4/termcap.m4
@@ -1,5 +1,5 @@
 # termcap.m4 serial 10
-dnl Copyright (C) 2000-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2000-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/terminfo.m4 b/m4/terminfo.m4
index 4e9af63699..8f729f2e3c 100644
--- a/m4/terminfo.m4
+++ b/m4/terminfo.m4
@@ -1,5 +1,5 @@
 # terminfo.m4 serial 5
-dnl Copyright (C) 2000-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2000-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/termios_h.m4 b/m4/termios_h.m4
index 6c835388be..4a69003360 100644
--- a/m4/termios_h.m4
+++ b/m4/termios_h.m4
@@ -1,5 +1,5 @@
 # termios_h.m4 serial 7
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/thrd.m4 b/m4/thrd.m4
index ce78a83739..452629dbbb 100644
--- a/m4/thrd.m4
+++ b/m4/thrd.m4
@@ -1,5 +1,5 @@
 # thrd.m4 serial 1
-dnl Copyright (C) 2019-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2019-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/thread.m4 b/m4/thread.m4
index 1a8e543cba..12515f6a93 100644
--- a/m4/thread.m4
+++ b/m4/thread.m4
@@ -1,5 +1,5 @@
 # thread.m4 serial 3
-dnl Copyright (C) 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/threadlib.m4 b/m4/threadlib.m4
index ecb4970af2..ff959346c0 100644
--- a/m4/threadlib.m4
+++ b/m4/threadlib.m4
@@ -1,5 +1,5 @@
 # threadlib.m4 serial 32
-dnl Copyright (C) 2005-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2005-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/threads_h.m4 b/m4/threads_h.m4
index fc707e43fa..77fe20d279 100644
--- a/m4/threads_h.m4
+++ b/m4/threads_h.m4
@@ -1,5 +1,5 @@
 # threads_h.m4 serial 10
-dnl Copyright (C) 2019-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2019-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/time_h.m4 b/m4/time_h.m4
index 4ac8fd0075..f6bf3a4f30 100644
--- a/m4/time_h.m4
+++ b/m4/time_h.m4
@@ -1,6 +1,6 @@
 # Configure a more-standard replacement for <time.h>.
 
-# Copyright (C) 2000-2001, 2003-2007, 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2000-2001, 2003-2007, 2009-2023 Free Software Foundation, Inc.
 
 # serial 20
 
diff --git a/m4/time_r.m4 b/m4/time_r.m4
index 8a1ad9dadf..adce438abf 100644
--- a/m4/time_r.m4
+++ b/m4/time_r.m4
@@ -1,6 +1,6 @@
 dnl Reentrant time functions: localtime_r, gmtime_r.
 
-dnl Copyright (C) 2003, 2006-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2003, 2006-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/time_rz.m4 b/m4/time_rz.m4
index 4cb6a06485..d13bc06b7a 100644
--- a/m4/time_rz.m4
+++ b/m4/time_rz.m4
@@ -1,6 +1,6 @@
 dnl Time zone functions: tzalloc, localtime_rz, etc.
 
-dnl Copyright (C) 2015-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2015-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/timegm.m4 b/m4/timegm.m4
index f1893941f8..6079f1a39c 100644
--- a/m4/timegm.m4
+++ b/m4/timegm.m4
@@ -1,5 +1,5 @@
 # timegm.m4 serial 13
-dnl Copyright (C) 2003, 2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2003, 2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/timer_time.m4 b/m4/timer_time.m4
index 8d41f945c5..4c2608b58e 100644
--- a/m4/timer_time.m4
+++ b/m4/timer_time.m4
@@ -1,5 +1,5 @@
 # timer_time.m4 serial 5
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/times.m4 b/m4/times.m4
index cd828c6d41..d52a2e1b4a 100644
--- a/m4/times.m4
+++ b/m4/times.m4
@@ -1,5 +1,5 @@
 # times.m4 serial 2
-dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/timespec.m4 b/m4/timespec.m4
index 6a1afef040..95f475f2cc 100644
--- a/m4/timespec.m4
+++ b/m4/timespec.m4
@@ -1,6 +1,6 @@
 #serial 15
 
-# Copyright (C) 2000-2001, 2003-2007, 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2000-2001, 2003-2007, 2009-2023 Free Software Foundation, Inc.
 
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
diff --git a/m4/timespec_get.m4 b/m4/timespec_get.m4
index acea56d626..866ba5003a 100644
--- a/m4/timespec_get.m4
+++ b/m4/timespec_get.m4
@@ -1,5 +1,5 @@
 # timespec_get.m4 serial 3
-dnl Copyright (C) 2021-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2021-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/timespec_getres.m4 b/m4/timespec_getres.m4
index 1f1c9d8e86..d7adaee41d 100644
--- a/m4/timespec_getres.m4
+++ b/m4/timespec_getres.m4
@@ -1,5 +1,5 @@
 # Test whether timespec_getres works.
-dnl Copyright 2021-2022 Free Software Foundation, Inc.
+dnl Copyright 2021-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/tls.m4 b/m4/tls.m4
index 3111363ceb..03180b5208 100644
--- a/m4/tls.m4
+++ b/m4/tls.m4
@@ -1,5 +1,5 @@
 # tls.m4 serial 2 (gettext-0.18)
-dnl Copyright (C) 2005, 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2005, 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/tm_gmtoff.m4 b/m4/tm_gmtoff.m4
index 9275bed673..bc41de361c 100644
--- a/m4/tm_gmtoff.m4
+++ b/m4/tm_gmtoff.m4
@@ -1,5 +1,5 @@
 # tm_gmtoff.m4 serial 3
-dnl Copyright (C) 2002, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/tmpdir.m4 b/m4/tmpdir.m4
index 1e015aa9ed..cf89497ab7 100644
--- a/m4/tmpdir.m4
+++ b/m4/tmpdir.m4
@@ -1,5 +1,5 @@
 # tmpdir.m4 serial 4
-dnl Copyright (C) 2001-2002, 2006, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2001-2002, 2006, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/tmpfile.m4 b/m4/tmpfile.m4
index 36abd15956..e0df72be97 100644
--- a/m4/tmpfile.m4
+++ b/m4/tmpfile.m4
@@ -1,5 +1,5 @@
 # tmpfile.m4 serial 4
-# Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
diff --git a/m4/towctrans.m4 b/m4/towctrans.m4
index 31e910cb2a..6dd8efb93b 100644
--- a/m4/towctrans.m4
+++ b/m4/towctrans.m4
@@ -1,5 +1,5 @@
 # towctrans.m4 serial 2
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/trunc-ieee.m4 b/m4/trunc-ieee.m4
index 41c7210288..913800227b 100644
--- a/m4/trunc-ieee.m4
+++ b/m4/trunc-ieee.m4
@@ -1,5 +1,5 @@
 # trunc-ieee.m4 serial 1
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/trunc.m4 b/m4/trunc.m4
index 811256ce5a..154afc67da 100644
--- a/m4/trunc.m4
+++ b/m4/trunc.m4
@@ -1,5 +1,5 @@
 # trunc.m4 serial 15
-dnl Copyright (C) 2007, 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007, 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/truncate.m4 b/m4/truncate.m4
index 5aee7feacd..312d0d6864 100644
--- a/m4/truncate.m4
+++ b/m4/truncate.m4
@@ -1,5 +1,5 @@
 # truncate.m4 serial 3   -*- Autoconf -*-
-dnl Copyright (C) 2017-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2017-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/truncf-ieee.m4 b/m4/truncf-ieee.m4
index 35031e4ee0..7dbf7d4f0b 100644
--- a/m4/truncf-ieee.m4
+++ b/m4/truncf-ieee.m4
@@ -1,5 +1,5 @@
 # truncf-ieee.m4 serial 1
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/truncf.m4 b/m4/truncf.m4
index a9781507e8..e22e43cb45 100644
--- a/m4/truncf.m4
+++ b/m4/truncf.m4
@@ -1,5 +1,5 @@
 # truncf.m4 serial 15
-dnl Copyright (C) 2007, 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007, 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/truncl-ieee.m4 b/m4/truncl-ieee.m4
index ad4d8afe26..22c99896c6 100644
--- a/m4/truncl-ieee.m4
+++ b/m4/truncl-ieee.m4
@@ -1,5 +1,5 @@
 # truncl-ieee.m4 serial 1
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/truncl.m4 b/m4/truncl.m4
index 8c63443761..5cd5587c2f 100644
--- a/m4/truncl.m4
+++ b/m4/truncl.m4
@@ -1,5 +1,5 @@
 # truncl.m4 serial 17
-dnl Copyright (C) 2007-2008, 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2008, 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/tsearch.m4 b/m4/tsearch.m4
index cc09760f80..d24b2ca4a5 100644
--- a/m4/tsearch.m4
+++ b/m4/tsearch.m4
@@ -1,5 +1,5 @@
 # tsearch.m4 serial 8
-dnl Copyright (C) 2006-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2006-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/ttyname_r.m4 b/m4/ttyname_r.m4
index ce1c8ef1ee..3f027da45a 100644
--- a/m4/ttyname_r.m4
+++ b/m4/ttyname_r.m4
@@ -1,5 +1,5 @@
 # ttyname_r.m4 serial 11
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/tzset.m4 b/m4/tzset.m4
index 2c7e17e28f..72e935fe18 100644
--- a/m4/tzset.m4
+++ b/m4/tzset.m4
@@ -1,6 +1,6 @@
 # serial 16
 
-# Copyright (C) 2003, 2007, 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2003, 2007, 2009-2023 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
diff --git a/m4/uchar_h.m4 b/m4/uchar_h.m4
index 1a6124d9da..2d1869a293 100644
--- a/m4/uchar_h.m4
+++ b/m4/uchar_h.m4
@@ -1,5 +1,5 @@
 # uchar_h.m4 serial 20
-dnl Copyright (C) 2019-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2019-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/ulonglong.m4 b/m4/ulonglong.m4
index 7ebb4a06a6..5d452123ee 100644
--- a/m4/ulonglong.m4
+++ b/m4/ulonglong.m4
@@ -1,5 +1,5 @@
 # ulonglong.m4 serial 10
-dnl Copyright (C) 1999-2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 1999-2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/uname.m4 b/m4/uname.m4
index f00685231b..b61c7eb83a 100644
--- a/m4/uname.m4
+++ b/m4/uname.m4
@@ -1,5 +1,5 @@
 # uname.m4 serial 11
-dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/ungetc.m4 b/m4/ungetc.m4
index 12a1099194..8977a346dd 100644
--- a/m4/ungetc.m4
+++ b/m4/ungetc.m4
@@ -1,5 +1,5 @@
 # ungetc.m4 serial 10
-dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/unicodeio.m4 b/m4/unicodeio.m4
index 2d202dfcb0..86a7a20435 100644
--- a/m4/unicodeio.m4
+++ b/m4/unicodeio.m4
@@ -1,5 +1,5 @@
 # unicodeio.m4 serial 3
-dnl Copyright (C) 2002-2003, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2003, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/unistd-safer.m4 b/m4/unistd-safer.m4
index 33158a4805..ced03b0111 100644
--- a/m4/unistd-safer.m4
+++ b/m4/unistd-safer.m4
@@ -1,5 +1,5 @@
 #serial 9
-dnl Copyright (C) 2002, 2005-2006, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002, 2005-2006, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/unistd_h.m4 b/m4/unistd_h.m4
index 4c66ccc0a4..f4384027e3 100644
--- a/m4/unistd_h.m4
+++ b/m4/unistd_h.m4
@@ -1,5 +1,5 @@
 # unistd_h.m4 serial 90
-dnl Copyright (C) 2006-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2006-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/unlink-busy.m4 b/m4/unlink-busy.m4
index 1c22d1fd89..27f103e78a 100644
--- a/m4/unlink-busy.m4
+++ b/m4/unlink-busy.m4
@@ -4,7 +4,7 @@ dnl From J. David Anglin.
 
 dnl HPUX and other systems can't unlink shared text that is being executed.
 
-# Copyright (C) 2000-2001, 2004, 2007, 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2000-2001, 2004, 2007, 2009-2023 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
diff --git a/m4/unlink.m4 b/m4/unlink.m4
index e25b5679d2..d74d55006e 100644
--- a/m4/unlink.m4
+++ b/m4/unlink.m4
@@ -1,5 +1,5 @@
 # unlink.m4 serial 15
-dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/unlinkat.m4 b/m4/unlinkat.m4
index 55af07d234..55cdb2a0a4 100644
--- a/m4/unlinkat.m4
+++ b/m4/unlinkat.m4
@@ -1,5 +1,5 @@
 # unlinkat.m4 serial 2
-dnl Copyright (C) 2004-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2004-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/unlinkdir.m4 b/m4/unlinkdir.m4
index 8e3aa9a30f..c3a9cfdaf7 100644
--- a/m4/unlinkdir.m4
+++ b/m4/unlinkdir.m4
@@ -1,6 +1,6 @@
 # serial 7
 
-# Copyright (C) 2005-2007, 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2005-2007, 2009-2023 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
diff --git a/m4/unlocked-io.m4 b/m4/unlocked-io.m4
index d42c95cedb..407c0bac83 100644
--- a/m4/unlocked-io.m4
+++ b/m4/unlocked-io.m4
@@ -1,6 +1,6 @@
 # unlocked-io.m4 serial 16
 
-# Copyright (C) 1998-2006, 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 1998-2006, 2009-2023 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
diff --git a/m4/unlockpt.m4 b/m4/unlockpt.m4
index b4e9e56ee1..9acbea6a37 100644
--- a/m4/unlockpt.m4
+++ b/m4/unlockpt.m4
@@ -1,5 +1,5 @@
 # unlockpt.m4 serial 2
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/uptime.m4 b/m4/uptime.m4
index eca8a21c40..ec5951f84a 100644
--- a/m4/uptime.m4
+++ b/m4/uptime.m4
@@ -1,6 +1,6 @@
 # serial 8
 
-# Copyright (C) 1996, 1999-2001, 2004, 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 1996, 1999-2001, 2004, 2009-2023 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
diff --git a/m4/userspec.m4 b/m4/userspec.m4
index 359f2d2ed8..4b3546df12 100644
--- a/m4/userspec.m4
+++ b/m4/userspec.m4
@@ -1,5 +1,5 @@
 # serial 11
-dnl Copyright (C) 2002-2006, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2006, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/usleep.m4 b/m4/usleep.m4
index 25d23f5115..b25e7ceb7e 100644
--- a/m4/usleep.m4
+++ b/m4/usleep.m4
@@ -1,5 +1,5 @@
 # usleep.m4 serial 7
-dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/utime.m4 b/m4/utime.m4
index d73e8aaf03..4c0443ae8a 100644
--- a/m4/utime.m4
+++ b/m4/utime.m4
@@ -1,5 +1,5 @@
 # utime.m4 serial 4
-dnl Copyright (C) 2017-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2017-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/utime_h.m4 b/m4/utime_h.m4
index 739ef118f0..6b6403e264 100644
--- a/m4/utime_h.m4
+++ b/m4/utime_h.m4
@@ -1,5 +1,5 @@
 # utime_h.m4 serial 8
-dnl Copyright (C) 2017-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2017-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/utimecmp.m4 b/m4/utimecmp.m4
index 3a45803b04..1ac3eebff5 100644
--- a/m4/utimecmp.m4
+++ b/m4/utimecmp.m4
@@ -1,5 +1,5 @@
 #serial 4
-dnl Copyright (C) 2004-2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2004-2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/utimens.m4 b/m4/utimens.m4
index 62aec78a63..ae35ef789b 100644
--- a/m4/utimens.m4
+++ b/m4/utimens.m4
@@ -1,4 +1,4 @@
-dnl Copyright (C) 2003-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2003-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/utimensat.m4 b/m4/utimensat.m4
index 3abdb86511..dd210fc989 100644
--- a/m4/utimensat.m4
+++ b/m4/utimensat.m4
@@ -1,7 +1,7 @@
 # serial 9
 # See if we need to provide utimensat replacement.
 
-dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/utimes.m4 b/m4/utimes.m4
index bf22161406..73b9a2da34 100644
--- a/m4/utimes.m4
+++ b/m4/utimes.m4
@@ -1,7 +1,7 @@
 # Detect some bugs in glibc's implementation of utimes.
 # serial 8
 
-dnl Copyright (C) 2003-2005, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2003-2005, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/va-args.m4 b/m4/va-args.m4
index dfec1d8005..8949a7de13 100644
--- a/m4/va-args.m4
+++ b/m4/va-args.m4
@@ -1,5 +1,5 @@
 # va-args.m4 serial 1
-dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/valgrind-tests.m4 b/m4/valgrind-tests.m4
index a8d5a621e2..0157f7cb8f 100644
--- a/m4/valgrind-tests.m4
+++ b/m4/valgrind-tests.m4
@@ -1,5 +1,5 @@
 # valgrind-tests.m4 serial 8
-dnl Copyright (C) 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/vararrays.m4 b/m4/vararrays.m4
index 28e22a49df..fd6230c296 100644
--- a/m4/vararrays.m4
+++ b/m4/vararrays.m4
@@ -4,7 +4,7 @@
 
 # From Paul Eggert
 
-# Copyright (C) 2001, 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2001, 2009-2023 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
diff --git a/m4/vasnprintf-posix.m4 b/m4/vasnprintf-posix.m4
index aecccb3533..baf7cb437d 100644
--- a/m4/vasnprintf-posix.m4
+++ b/m4/vasnprintf-posix.m4
@@ -1,5 +1,5 @@
 # vasnprintf-posix.m4 serial 13
-dnl Copyright (C) 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/vasnprintf.m4 b/m4/vasnprintf.m4
index afdece71c9..6361c8436c 100644
--- a/m4/vasnprintf.m4
+++ b/m4/vasnprintf.m4
@@ -1,5 +1,5 @@
 # vasnprintf.m4 serial 38
-dnl Copyright (C) 2002-2004, 2006-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2004, 2006-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/vasprintf-posix.m4 b/m4/vasprintf-posix.m4
index 122b2219c0..7c198a6410 100644
--- a/m4/vasprintf-posix.m4
+++ b/m4/vasprintf-posix.m4
@@ -1,5 +1,5 @@
 # vasprintf-posix.m4 serial 13
-dnl Copyright (C) 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/vasprintf.m4 b/m4/vasprintf.m4
index b92977b662..6e6156a754 100644
--- a/m4/vasprintf.m4
+++ b/m4/vasprintf.m4
@@ -1,5 +1,5 @@
 # vasprintf.m4 serial 6
-dnl Copyright (C) 2002-2003, 2006-2007, 2009-2022 Free Software Foundation,
+dnl Copyright (C) 2002-2003, 2006-2007, 2009-2023 Free Software Foundation,
 dnl Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
diff --git a/m4/vdprintf-posix.m4 b/m4/vdprintf-posix.m4
index 7b6d6311fc..a873cbe003 100644
--- a/m4/vdprintf-posix.m4
+++ b/m4/vdprintf-posix.m4
@@ -1,5 +1,5 @@
 # vdprintf-posix.m4 serial 2
-dnl Copyright (C) 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/vdprintf.m4 b/m4/vdprintf.m4
index c2b2abafe2..eeea4b7c7d 100644
--- a/m4/vdprintf.m4
+++ b/m4/vdprintf.m4
@@ -1,5 +1,5 @@
 # vdprintf.m4 serial 1
-dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/version-etc.m4 b/m4/version-etc.m4
index c1f355bce5..76b5d3e88e 100644
--- a/m4/version-etc.m4
+++ b/m4/version-etc.m4
@@ -1,5 +1,5 @@
 # version-etc.m4 serial 1
-# Copyright (C) 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2009-2023 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
diff --git a/m4/vfprintf-posix.m4 b/m4/vfprintf-posix.m4
index f46d215667..ec68052214 100644
--- a/m4/vfprintf-posix.m4
+++ b/m4/vfprintf-posix.m4
@@ -1,5 +1,5 @@
 # vfprintf-posix.m4 serial 14
-dnl Copyright (C) 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/visibility.m4 b/m4/visibility.m4
index 4a212a4e5e..f0468e89b5 100644
--- a/m4/visibility.m4
+++ b/m4/visibility.m4
@@ -1,5 +1,5 @@
 # visibility.m4 serial 8
-dnl Copyright (C) 2005, 2008, 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2005, 2008, 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/vprintf-posix.m4 b/m4/vprintf-posix.m4
index 9ff0d00e80..b25d326bf8 100644
--- a/m4/vprintf-posix.m4
+++ b/m4/vprintf-posix.m4
@@ -1,5 +1,5 @@
 # vprintf-posix.m4 serial 3
-dnl Copyright (C) 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/vsnprintf-posix.m4 b/m4/vsnprintf-posix.m4
index 18dcb65fc2..5ea04a05e5 100644
--- a/m4/vsnprintf-posix.m4
+++ b/m4/vsnprintf-posix.m4
@@ -1,5 +1,5 @@
 # vsnprintf-posix.m4 serial 15
-dnl Copyright (C) 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/vsnprintf.m4 b/m4/vsnprintf.m4
index 02b448f3bd..7fbb11c4a2 100644
--- a/m4/vsnprintf.m4
+++ b/m4/vsnprintf.m4
@@ -1,5 +1,5 @@
 # vsnprintf.m4 serial 7
-dnl Copyright (C) 2002-2004, 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2004, 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/vsprintf-posix.m4 b/m4/vsprintf-posix.m4
index ccaffe8df5..3ca0178ebd 100644
--- a/m4/vsprintf-posix.m4
+++ b/m4/vsprintf-posix.m4
@@ -1,5 +1,5 @@
 # vsprintf-posix.m4 serial 12
-dnl Copyright (C) 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/wait-process.m4 b/m4/wait-process.m4
index e85a4c67ff..a70a592663 100644
--- a/m4/wait-process.m4
+++ b/m4/wait-process.m4
@@ -1,5 +1,5 @@
 # wait-process.m4 serial 6
-dnl Copyright (C) 2003, 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2003, 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/waitpid.m4 b/m4/waitpid.m4
index 8e7568fe91..b001062193 100644
--- a/m4/waitpid.m4
+++ b/m4/waitpid.m4
@@ -1,5 +1,5 @@
 # waitpid.m4 serial 2
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/warn-on-use.m4 b/m4/warn-on-use.m4
index a81731f31c..10649c5cba 100644
--- a/m4/warn-on-use.m4
+++ b/m4/warn-on-use.m4
@@ -1,5 +1,5 @@
 # warn-on-use.m4 serial 10
-dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2010-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/warnings.m4 b/m4/warnings.m4
index 60088f93ed..063bc5ca64 100644
--- a/m4/warnings.m4
+++ b/m4/warnings.m4
@@ -1,5 +1,5 @@
 # warnings.m4 serial 16
-dnl Copyright (C) 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/wchar_h.m4 b/m4/wchar_h.m4
index 4baba1af05..8ec66193e0 100644
--- a/m4/wchar_h.m4
+++ b/m4/wchar_h.m4
@@ -1,6 +1,6 @@
 dnl A placeholder for ISO C99 <wchar.h>, for platforms that have issues.
 
-dnl Copyright (C) 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/wchar_t.m4 b/m4/wchar_t.m4
index 268e3e5159..50bde08aec 100644
--- a/m4/wchar_t.m4
+++ b/m4/wchar_t.m4
@@ -1,5 +1,5 @@
 # wchar_t.m4 serial 4 (gettext-0.18.2)
-dnl Copyright (C) 2002-2003, 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2003, 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/wcpcpy.m4 b/m4/wcpcpy.m4
index 9a5b91d52f..6f200db995 100644
--- a/m4/wcpcpy.m4
+++ b/m4/wcpcpy.m4
@@ -1,5 +1,5 @@
 # wcpcpy.m4 serial 3
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/wcpncpy.m4 b/m4/wcpncpy.m4
index dfc90ad2b3..42e583743f 100644
--- a/m4/wcpncpy.m4
+++ b/m4/wcpncpy.m4
@@ -1,5 +1,5 @@
 # wcpncpy.m4 serial 3
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/wcrtomb.m4 b/m4/wcrtomb.m4
index fee21d7ef9..d51b36e17e 100644
--- a/m4/wcrtomb.m4
+++ b/m4/wcrtomb.m4
@@ -1,5 +1,5 @@
 # wcrtomb.m4 serial 17
-dnl Copyright (C) 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/wcscasecmp.m4 b/m4/wcscasecmp.m4
index 48f0198b73..11416834ff 100644
--- a/m4/wcscasecmp.m4
+++ b/m4/wcscasecmp.m4
@@ -1,5 +1,5 @@
 # wcscasecmp.m4 serial 2
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/wcscat.m4 b/m4/wcscat.m4
index 91de05e607..e8e3d578f9 100644
--- a/m4/wcscat.m4
+++ b/m4/wcscat.m4
@@ -1,5 +1,5 @@
 # wcscat.m4 serial 2
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/wcschr.m4 b/m4/wcschr.m4
index 4e63f4e5b9..4ea2b0a416 100644
--- a/m4/wcschr.m4
+++ b/m4/wcschr.m4
@@ -1,5 +1,5 @@
 # wcschr.m4 serial 2
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/wcscmp.m4 b/m4/wcscmp.m4
index 9b933cc1be..61fd800e4d 100644
--- a/m4/wcscmp.m4
+++ b/m4/wcscmp.m4
@@ -1,5 +1,5 @@
 # wcscmp.m4 serial 2
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/wcscoll.m4 b/m4/wcscoll.m4
index 438f0145f6..10d4a07348 100644
--- a/m4/wcscoll.m4
+++ b/m4/wcscoll.m4
@@ -1,5 +1,5 @@
 # wcscoll.m4 serial 2
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/wcscpy.m4 b/m4/wcscpy.m4
index be4992cb71..77d63e04eb 100644
--- a/m4/wcscpy.m4
+++ b/m4/wcscpy.m4
@@ -1,5 +1,5 @@
 # wcscpy.m4 serial 2
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/wcscspn.m4 b/m4/wcscspn.m4
index 60f9e23192..63b888ddcd 100644
--- a/m4/wcscspn.m4
+++ b/m4/wcscspn.m4
@@ -1,5 +1,5 @@
 # wcscspn.m4 serial 2
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/wcsdup.m4 b/m4/wcsdup.m4
index 3bc745596f..71d3b241fc 100644
--- a/m4/wcsdup.m4
+++ b/m4/wcsdup.m4
@@ -1,5 +1,5 @@
 # wcsdup.m4 serial 4
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/wcsftime.m4 b/m4/wcsftime.m4
index 094ecd0289..ce8a8f4cac 100644
--- a/m4/wcsftime.m4
+++ b/m4/wcsftime.m4
@@ -1,5 +1,5 @@
 # wcsftime.m4 serial 1
-dnl Copyright (C) 2017-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2017-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/wcslen.m4 b/m4/wcslen.m4
index 9e81443729..3f2014aef5 100644
--- a/m4/wcslen.m4
+++ b/m4/wcslen.m4
@@ -1,5 +1,5 @@
 # wcslen.m4 serial 2
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/wcsncasecmp.m4 b/m4/wcsncasecmp.m4
index 70b7fc6b45..aefe96603d 100644
--- a/m4/wcsncasecmp.m4
+++ b/m4/wcsncasecmp.m4
@@ -1,5 +1,5 @@
 # wcsncasecmp.m4 serial 2
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/wcsncat.m4 b/m4/wcsncat.m4
index b8ec55fe07..3712f1cd79 100644
--- a/m4/wcsncat.m4
+++ b/m4/wcsncat.m4
@@ -1,5 +1,5 @@
 # wcsncat.m4 serial 2
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/wcsncmp.m4 b/m4/wcsncmp.m4
index 4768c6be71..6253af3c22 100644
--- a/m4/wcsncmp.m4
+++ b/m4/wcsncmp.m4
@@ -1,5 +1,5 @@
 # wcsncmp.m4 serial 2
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/wcsncpy.m4 b/m4/wcsncpy.m4
index 132bcf85a9..30e666208e 100644
--- a/m4/wcsncpy.m4
+++ b/m4/wcsncpy.m4
@@ -1,5 +1,5 @@
 # wcsncpy.m4 serial 2
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/wcsnlen.m4 b/m4/wcsnlen.m4
index a5788606ee..797334c618 100644
--- a/m4/wcsnlen.m4
+++ b/m4/wcsnlen.m4
@@ -1,5 +1,5 @@
 # wcsnlen.m4 serial 2
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/wcsnrtombs.m4 b/m4/wcsnrtombs.m4
index 4e58410db1..e31d72cc97 100644
--- a/m4/wcsnrtombs.m4
+++ b/m4/wcsnrtombs.m4
@@ -1,5 +1,5 @@
 # wcsnrtombs.m4 serial 7
-dnl Copyright (C) 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/wcspbrk.m4 b/m4/wcspbrk.m4
index 4aaed88248..f4da6ccca2 100644
--- a/m4/wcspbrk.m4
+++ b/m4/wcspbrk.m4
@@ -1,5 +1,5 @@
 # wcspbrk.m4 serial 2
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/wcsrchr.m4 b/m4/wcsrchr.m4
index d69cfa1c10..6b44688321 100644
--- a/m4/wcsrchr.m4
+++ b/m4/wcsrchr.m4
@@ -1,5 +1,5 @@
 # wcsrchr.m4 serial 2
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/wcsrtombs.m4 b/m4/wcsrtombs.m4
index 528bb876ef..776f465156 100644
--- a/m4/wcsrtombs.m4
+++ b/m4/wcsrtombs.m4
@@ -1,5 +1,5 @@
 # wcsrtombs.m4 serial 13
-dnl Copyright (C) 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/wcsspn.m4 b/m4/wcsspn.m4
index 9a1f61930b..de5daa0e99 100644
--- a/m4/wcsspn.m4
+++ b/m4/wcsspn.m4
@@ -1,5 +1,5 @@
 # wcsspn.m4 serial 2
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/wcsstr.m4 b/m4/wcsstr.m4
index a2382e5efa..861c88b566 100644
--- a/m4/wcsstr.m4
+++ b/m4/wcsstr.m4
@@ -1,5 +1,5 @@
 # wcsstr.m4 serial 2
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/wcstok.m4 b/m4/wcstok.m4
index ef8ae197a1..e17232bab6 100644
--- a/m4/wcstok.m4
+++ b/m4/wcstok.m4
@@ -1,5 +1,5 @@
 # wcstok.m4 serial 6
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/wcswidth.m4 b/m4/wcswidth.m4
index f0665f48d0..0dda23f02e 100644
--- a/m4/wcswidth.m4
+++ b/m4/wcswidth.m4
@@ -1,5 +1,5 @@
 # wcswidth.m4 serial 2
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/wcsxfrm.m4 b/m4/wcsxfrm.m4
index 278dc2b8b8..d6e1e696f6 100644
--- a/m4/wcsxfrm.m4
+++ b/m4/wcsxfrm.m4
@@ -1,5 +1,5 @@
 # wcsxfrm.m4 serial 2
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/wctob.m4 b/m4/wctob.m4
index af172cd159..90042a52b4 100644
--- a/m4/wctob.m4
+++ b/m4/wctob.m4
@@ -1,5 +1,5 @@
 # wctob.m4 serial 13
-dnl Copyright (C) 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/wctomb.m4 b/m4/wctomb.m4
index 12329d8ebc..2e22310a02 100644
--- a/m4/wctomb.m4
+++ b/m4/wctomb.m4
@@ -1,5 +1,5 @@
 # wctomb.m4 serial 2
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/wctrans.m4 b/m4/wctrans.m4
index 12e97bd546..14eeb53012 100644
--- a/m4/wctrans.m4
+++ b/m4/wctrans.m4
@@ -1,5 +1,5 @@
 # wctrans.m4 serial 2
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/wctype.m4 b/m4/wctype.m4
index de4e266577..7ab497432b 100644
--- a/m4/wctype.m4
+++ b/m4/wctype.m4
@@ -1,5 +1,5 @@
 # wctype.m4 serial 2
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/wctype_h.m4 b/m4/wctype_h.m4
index 702cb39cd5..6856a73595 100644
--- a/m4/wctype_h.m4
+++ b/m4/wctype_h.m4
@@ -2,7 +2,7 @@
 
 dnl A placeholder for ISO C99 <wctype.h>, for platforms that lack it.
 
-dnl Copyright (C) 2006-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2006-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/wcwidth.m4 b/m4/wcwidth.m4
index 9dd59579f6..f204f3d845 100644
--- a/m4/wcwidth.m4
+++ b/m4/wcwidth.m4
@@ -1,5 +1,5 @@
 # wcwidth.m4 serial 34
-dnl Copyright (C) 2006-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2006-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/windows-stat-inodes.m4 b/m4/windows-stat-inodes.m4
index 2f109c9625..ac0d1e68ec 100644
--- a/m4/windows-stat-inodes.m4
+++ b/m4/windows-stat-inodes.m4
@@ -1,5 +1,5 @@
 # windows-stat-inodes.m4 serial 1
-dnl Copyright (C) 2017-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2017-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/windows-stat-timespec.m4 b/m4/windows-stat-timespec.m4
index 558dbf6fb1..2bb2ea9306 100644
--- a/m4/windows-stat-timespec.m4
+++ b/m4/windows-stat-timespec.m4
@@ -1,5 +1,5 @@
 # windows-stat-timespec.m4 serial 1
-dnl Copyright (C) 2017-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2017-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/wint_t.m4 b/m4/wint_t.m4
index adc5866140..dfd743b3a6 100644
--- a/m4/wint_t.m4
+++ b/m4/wint_t.m4
@@ -1,5 +1,5 @@
 # wint_t.m4 serial 11
-dnl Copyright (C) 2003, 2007-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2003, 2007-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/wmemchr.m4 b/m4/wmemchr.m4
index e75b551962..ac414fbc57 100644
--- a/m4/wmemchr.m4
+++ b/m4/wmemchr.m4
@@ -1,5 +1,5 @@
 # wmemchr.m4 serial 5
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/wmemcmp.m4 b/m4/wmemcmp.m4
index 07e6fa576e..534dde10cc 100644
--- a/m4/wmemcmp.m4
+++ b/m4/wmemcmp.m4
@@ -1,5 +1,5 @@
 # wmemcmp.m4 serial 5
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/wmemcpy.m4 b/m4/wmemcpy.m4
index 7a270e30f1..cb002609ff 100644
--- a/m4/wmemcpy.m4
+++ b/m4/wmemcpy.m4
@@ -1,5 +1,5 @@
 # wmemcpy.m4 serial 5
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/wmemmove.m4 b/m4/wmemmove.m4
index 941b6fd42d..eaf4af0802 100644
--- a/m4/wmemmove.m4
+++ b/m4/wmemmove.m4
@@ -1,5 +1,5 @@
 # wmemmove.m4 serial 5
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/wmempcpy.m4 b/m4/wmempcpy.m4
index 9765039b0c..40fbb0d7ff 100644
--- a/m4/wmempcpy.m4
+++ b/m4/wmempcpy.m4
@@ -1,5 +1,5 @@
 # wmempcpy.m4 serial 1
-dnl Copyright (C) 2020-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2020-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/wmemset.m4 b/m4/wmemset.m4
index c82c200840..f078db2414 100644
--- a/m4/wmemset.m4
+++ b/m4/wmemset.m4
@@ -1,5 +1,5 @@
 # wmemset.m4 serial 5
-dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2011-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/write-any-file.m4 b/m4/write-any-file.m4
index 82be34aeff..e0d46fe3cc 100644
--- a/m4/write-any-file.m4
+++ b/m4/write-any-file.m4
@@ -1,6 +1,6 @@
 # Determine whether we can write any file.
 
-# Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
diff --git a/m4/write.m4 b/m4/write.m4
index 33b5dce60a..fc691f09b5 100644
--- a/m4/write.m4
+++ b/m4/write.m4
@@ -1,5 +1,5 @@
 # write.m4 serial 6
-dnl Copyright (C) 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/xalloc.m4 b/m4/xalloc.m4
index 17a9c06dc4..fc56f59a00 100644
--- a/m4/xalloc.m4
+++ b/m4/xalloc.m4
@@ -1,5 +1,5 @@
 # xalloc.m4 serial 18
-dnl Copyright (C) 2002-2006, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2006, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/xgetcwd.m4 b/m4/xgetcwd.m4
index 8b48535d09..9695d99991 100644
--- a/m4/xgetcwd.m4
+++ b/m4/xgetcwd.m4
@@ -1,5 +1,5 @@
 #serial 8
-dnl Copyright (C) 2002-2006, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2006, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/xnanosleep.m4 b/m4/xnanosleep.m4
index b0856dd1f9..7ce72e90b4 100644
--- a/m4/xnanosleep.m4
+++ b/m4/xnanosleep.m4
@@ -1,5 +1,5 @@
 #serial 6
-dnl Copyright (C) 2005-2006, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2005-2006, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/xsize.m4 b/m4/xsize.m4
index 0109049e04..649db9c5ea 100644
--- a/m4/xsize.m4
+++ b/m4/xsize.m4
@@ -1,5 +1,5 @@
 # xsize.m4 serial 5
-dnl Copyright (C) 2003-2004, 2008-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2003-2004, 2008-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/xstrndup.m4 b/m4/xstrndup.m4
index 41eabd3ef6..1fb6a7ddf8 100644
--- a/m4/xstrndup.m4
+++ b/m4/xstrndup.m4
@@ -1,5 +1,5 @@
 # xstrndup.m4 serial 2
-dnl Copyright (C) 2003, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2003, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/xstrtod.m4 b/m4/xstrtod.m4
index 631df06f3c..c6d5e871d0 100644
--- a/m4/xstrtod.m4
+++ b/m4/xstrtod.m4
@@ -1,5 +1,5 @@
 #serial 8
-dnl Copyright (C) 2002-2003, 2005-2006, 2009-2022 Free Software Foundation,
+dnl Copyright (C) 2002-2003, 2005-2006, 2009-2023 Free Software Foundation,
 dnl Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
diff --git a/m4/xstrtol.m4 b/m4/xstrtol.m4
index 3793de6468..dc4126169a 100644
--- a/m4/xstrtol.m4
+++ b/m4/xstrtol.m4
@@ -1,5 +1,5 @@
 #serial 11
-dnl Copyright (C) 2002-2007, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2007, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/xvasprintf.m4 b/m4/xvasprintf.m4
index 10480a23cb..b7e0701cd3 100644
--- a/m4/xvasprintf.m4
+++ b/m4/xvasprintf.m4
@@ -1,5 +1,5 @@
 # xvasprintf.m4 serial 2
-dnl Copyright (C) 2006, 2009-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2006, 2009-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/yesno.m4 b/m4/yesno.m4
index 45ab266c7f..2146b9ee9b 100644
--- a/m4/yesno.m4
+++ b/m4/yesno.m4
@@ -1,5 +1,5 @@
 # yesno.m4 serial 6
-dnl Copyright (C) 2002-2003, 2005-2006, 2009-2022 Free Software Foundation,
+dnl Copyright (C) 2002-2003, 2005-2006, 2009-2023 Free Software Foundation,
 dnl Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
diff --git a/m4/yield.m4 b/m4/yield.m4
index 58bdb51934..3bfb8cda5b 100644
--- a/m4/yield.m4
+++ b/m4/yield.m4
@@ -1,5 +1,5 @@
 # yield.m4 serial 4
-dnl Copyright (C) 2005-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2005-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/m4/zzgnulib.m4 b/m4/zzgnulib.m4
index fd73a201fd..362102b606 100644
--- a/m4/zzgnulib.m4
+++ b/m4/zzgnulib.m4
@@ -1,5 +1,5 @@
 # zzgnulib.m4 serial 1
-dnl Copyright (C) 2020-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2020-2023 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
diff --git a/modules/COPYING b/modules/COPYING
index 89390f720e..220339fec0 100644
--- a/modules/COPYING
+++ b/modules/COPYING
@@ -2,7 +2,7 @@ The files in this directory describe the gnulib modules.
 The following copyright notice applies to each of these
 description files.
 
-Copyright (C) 2002-2022 Free Software Foundation, Inc.
+Copyright (C) 2002-2023 Free Software Foundation, Inc.
 This file is free software; the Free Software Foundation
 gives unlimited permission to copy and/or distribute it,
 with or without modifications, as long as this notice is preserved.
diff --git a/modules/README b/modules/README
index 8d3c51a501..d474c3e3e7 100644
--- a/modules/README
+++ b/modules/README
@@ -9,7 +9,7 @@ For every module,
 
 All the files in this directory are distributed under the following copyright:
 
-  Copyright (C) 2002-2022 Free Software Foundation, Inc.
+  Copyright (C) 2002-2023 Free Software Foundation, Inc.
   Copying and distribution of this file, with or without modification,
   in any medium, are permitted without royalty provided the copyright
   notice and this notice are preserved.
diff --git a/posix-modules b/posix-modules
index 1851538513..0db07f6bed 100755
--- a/posix-modules
+++ b/posix-modules
@@ -1,6 +1,6 @@
 #!/bin/sh
 #
-# Copyright (C) 2002-2008, 2010-2022 Free Software Foundation, Inc.
+# Copyright (C) 2002-2008, 2010-2023 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/pygnulib/GLConfig.py b/pygnulib/GLConfig.py
index 216f2e05fa..a2392bf904 100644
--- a/pygnulib/GLConfig.py
+++ b/pygnulib/GLConfig.py
@@ -1,4 +1,4 @@
-# Copyright (C) 2002-2022 Free Software Foundation, Inc.
+# Copyright (C) 2002-2023 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/pygnulib/GLEmiter.py b/pygnulib/GLEmiter.py
index 8c8b3ed8a7..93f50b728c 100644
--- a/pygnulib/GLEmiter.py
+++ b/pygnulib/GLEmiter.py
@@ -1,4 +1,4 @@
-# Copyright (C) 2002-2022 Free Software Foundation, Inc.
+# Copyright (C) 2002-2023 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/pygnulib/GLError.py b/pygnulib/GLError.py
index c736e423af..712d74409b 100644
--- a/pygnulib/GLError.py
+++ b/pygnulib/GLError.py
@@ -1,4 +1,4 @@
-# Copyright (C) 2002-2022 Free Software Foundation, Inc.
+# Copyright (C) 2002-2023 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/pygnulib/GLFileSystem.py b/pygnulib/GLFileSystem.py
index 82f5f085b9..a0c6874770 100644
--- a/pygnulib/GLFileSystem.py
+++ b/pygnulib/GLFileSystem.py
@@ -1,4 +1,4 @@
-# Copyright (C) 2002-2022 Free Software Foundation, Inc.
+# Copyright (C) 2002-2023 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/pygnulib/GLImport.py b/pygnulib/GLImport.py
index 5dd73fa8bd..41b33146a3 100644
--- a/pygnulib/GLImport.py
+++ b/pygnulib/GLImport.py
@@ -1,4 +1,4 @@
-# Copyright (C) 2002-2022 Free Software Foundation, Inc.
+# Copyright (C) 2002-2023 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/pygnulib/GLInfo.py b/pygnulib/GLInfo.py
index b2d4457a5f..5e2eba54dd 100644
--- a/pygnulib/GLInfo.py
+++ b/pygnulib/GLInfo.py
@@ -1,4 +1,4 @@
-# Copyright (C) 2002-2022 Free Software Foundation, Inc.
+# Copyright (C) 2002-2023 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/pygnulib/GLMakefileTable.py b/pygnulib/GLMakefileTable.py
index d23f5710cb..e8ebe339be 100644
--- a/pygnulib/GLMakefileTable.py
+++ b/pygnulib/GLMakefileTable.py
@@ -1,4 +1,4 @@
-# Copyright (C) 2002-2022 Free Software Foundation, Inc.
+# Copyright (C) 2002-2023 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/pygnulib/GLModuleSystem.py b/pygnulib/GLModuleSystem.py
index f9b47a64a5..cc9bb27642 100644
--- a/pygnulib/GLModuleSystem.py
+++ b/pygnulib/GLModuleSystem.py
@@ -1,4 +1,4 @@
-# Copyright (C) 2002-2022 Free Software Foundation, Inc.
+# Copyright (C) 2002-2023 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/pygnulib/GLTestDir.py b/pygnulib/GLTestDir.py
index 68cc5ce411..6eead9adb8 100644
--- a/pygnulib/GLTestDir.py
+++ b/pygnulib/GLTestDir.py
@@ -1,4 +1,4 @@
-# Copyright (C) 2002-2022 Free Software Foundation, Inc.
+# Copyright (C) 2002-2023 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/pygnulib/__init__.py b/pygnulib/__init__.py
index 5e916b2e2b..ca3685be49 100644
--- a/pygnulib/__init__.py
+++ b/pygnulib/__init__.py
@@ -1,4 +1,4 @@
-# Copyright (C) 2002-2022 Free Software Foundation, Inc.
+# Copyright (C) 2002-2023 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/pygnulib/classes.py b/pygnulib/classes.py
index 575e0b08c3..4b7b211702 100644
--- a/pygnulib/classes.py
+++ b/pygnulib/classes.py
@@ -1,4 +1,4 @@
-# Copyright (C) 2002-2022 Free Software Foundation, Inc.
+# Copyright (C) 2002-2023 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/pygnulib/constants.py b/pygnulib/constants.py
index 10e11623b4..5bdd00f514 100644
--- a/pygnulib/constants.py
+++ b/pygnulib/constants.py
@@ -1,4 +1,4 @@
-# Copyright (C) 2002-2022 Free Software Foundation, Inc.
+# Copyright (C) 2002-2023 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/tests/altstack-util.h b/tests/altstack-util.h
index 8d0ee7e11a..80e4d4ec28 100644
--- a/tests/altstack-util.h
+++ b/tests/altstack-util.h
@@ -1,5 +1,5 @@
 /* Some auxiliary stuff for defining an alternate stack.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/atomic-int-gnulib.h b/tests/atomic-int-gnulib.h
index d1c68a2baa..d60adc4377 100644
--- a/tests/atomic-int-gnulib.h
+++ b/tests/atomic-int-gnulib.h
@@ -1,5 +1,5 @@
 /* Atomic integers.  Useful for testing multithreaded locking primitives.
-   Copyright (C) 2005, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005, 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/atomic-int-isoc.h b/tests/atomic-int-isoc.h
index c39a329d9c..19b038631e 100644
--- a/tests/atomic-int-isoc.h
+++ b/tests/atomic-int-isoc.h
@@ -1,5 +1,5 @@
 /* Atomic integers.  Useful for testing multithreaded locking primitives.
-   Copyright (C) 2005, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005, 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/atomic-int-posix.h b/tests/atomic-int-posix.h
index d03f153184..844f998ff7 100644
--- a/tests/atomic-int-posix.h
+++ b/tests/atomic-int-posix.h
@@ -1,5 +1,5 @@
 /* Atomic integers.  Useful for testing multithreaded locking primitives.
-   Copyright (C) 2005, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005, 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/bench-digest.h b/tests/bench-digest.h
index f5852dcc16..38c4f03dc8 100644
--- a/tests/bench-digest.h
+++ b/tests/bench-digest.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2018-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2018-2023 Free Software Foundation, Inc.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/tests/bench-md5.c b/tests/bench-md5.c
index c77702725a..eb846471af 100644
--- a/tests/bench-md5.c
+++ b/tests/bench-md5.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2018-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2018-2023 Free Software Foundation, Inc.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/tests/bench-sha1.c b/tests/bench-sha1.c
index df56a0bccc..14bf5d30fa 100644
--- a/tests/bench-sha1.c
+++ b/tests/bench-sha1.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2018-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2018-2023 Free Software Foundation, Inc.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/tests/bench-sha224.c b/tests/bench-sha224.c
index 978bd023f6..f8e48cfbdd 100644
--- a/tests/bench-sha224.c
+++ b/tests/bench-sha224.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2018-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2018-2023 Free Software Foundation, Inc.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/tests/bench-sha256.c b/tests/bench-sha256.c
index 90c1a6ce11..ad877542d0 100644
--- a/tests/bench-sha256.c
+++ b/tests/bench-sha256.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2018-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2018-2023 Free Software Foundation, Inc.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/tests/bench-sha384.c b/tests/bench-sha384.c
index afe7739919..9af27584ce 100644
--- a/tests/bench-sha384.c
+++ b/tests/bench-sha384.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2018-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2018-2023 Free Software Foundation, Inc.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/tests/bench-sha512.c b/tests/bench-sha512.c
index c598d1a6ae..485f1332c5 100644
--- a/tests/bench-sha512.c
+++ b/tests/bench-sha512.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2018-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2018-2023 Free Software Foundation, Inc.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/tests/havelib/Makefile.am b/tests/havelib/Makefile.am
index 8e223563d5..328f665563 100644
--- a/tests/havelib/Makefile.am
+++ b/tests/havelib/Makefile.am
@@ -1,5 +1,5 @@
 ## Makefile for the autoconf-lib-link/tests subdirectory of GNU gettext
-## Copyright (C) 1995-1997, 2001-2003, 2006, 2009-2022 Free Software
+## Copyright (C) 1995-1997, 2001-2003, 2006, 2009-2023 Free Software
 ## Foundation, Inc.
 ##
 ## This program is free software: you can redistribute it and/or modify
diff --git a/tests/havelib/rpathlx/configure.ac 
b/tests/havelib/rpathlx/configure.ac
index 26c23b2571..41f399a871 100644
--- a/tests/havelib/rpathlx/configure.ac
+++ b/tests/havelib/rpathlx/configure.ac
@@ -1,6 +1,6 @@
 dnl Configuration of a program that links with librpathx.
 dnl
-dnl Copyright (C) 2002-2003, 2005, 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2003, 2005, 2010-2023 Free Software Foundation, Inc.
 dnl
 dnl This program is free software: you can redistribute it and/or modify
 dnl it under the terms of the GNU General Public License as published by
diff --git a/tests/havelib/rpathly/configure.ac 
b/tests/havelib/rpathly/configure.ac
index 5d9b452056..89e9c89a31 100644
--- a/tests/havelib/rpathly/configure.ac
+++ b/tests/havelib/rpathly/configure.ac
@@ -1,6 +1,6 @@
 dnl Configuration of a program that links with librpathy.
 dnl
-dnl Copyright (C) 2002-2003, 2005, 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2003, 2005, 2010-2023 Free Software Foundation, Inc.
 dnl
 dnl This program is free software: you can redistribute it and/or modify
 dnl it under the terms of the GNU General Public License as published by
diff --git a/tests/havelib/rpathlyx/configure.ac 
b/tests/havelib/rpathlyx/configure.ac
index 646f56dbff..953d549a20 100644
--- a/tests/havelib/rpathlyx/configure.ac
+++ b/tests/havelib/rpathlyx/configure.ac
@@ -1,6 +1,6 @@
 dnl Configuration of a program that links with librpathy.
 dnl
-dnl Copyright (C) 2002-2003, 2005, 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2003, 2005, 2010-2023 Free Software Foundation, Inc.
 dnl
 dnl This program is free software: you can redistribute it and/or modify
 dnl it under the terms of the GNU General Public License as published by
diff --git a/tests/havelib/rpathlz/configure.ac 
b/tests/havelib/rpathlz/configure.ac
index 70b817c3f2..76f6b9ae3b 100644
--- a/tests/havelib/rpathlz/configure.ac
+++ b/tests/havelib/rpathlz/configure.ac
@@ -1,6 +1,6 @@
 dnl Configuration of a program that links with librpathz.
 dnl
-dnl Copyright (C) 2002-2003, 2005, 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2003, 2005, 2010-2023 Free Software Foundation, Inc.
 dnl
 dnl This program is free software: you can redistribute it and/or modify
 dnl it under the terms of the GNU General Public License as published by
diff --git a/tests/havelib/rpathlzyx/configure.ac 
b/tests/havelib/rpathlzyx/configure.ac
index 17ed620ef8..80279ffdbb 100644
--- a/tests/havelib/rpathlzyx/configure.ac
+++ b/tests/havelib/rpathlzyx/configure.ac
@@ -1,6 +1,6 @@
 dnl Configuration of a program that links with librpathz.
 dnl
-dnl Copyright (C) 2002-2003, 2005, 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2003, 2005, 2010-2023 Free Software Foundation, Inc.
 dnl
 dnl This program is free software: you can redistribute it and/or modify
 dnl it under the terms of the GNU General Public License as published by
diff --git a/tests/havelib/rpathx/configure.ac 
b/tests/havelib/rpathx/configure.ac
index 2889ea6fc6..2558c52d01 100644
--- a/tests/havelib/rpathx/configure.ac
+++ b/tests/havelib/rpathx/configure.ac
@@ -1,6 +1,6 @@
 dnl Configuration of librpathx.
 dnl
-dnl Copyright (C) 2002-2003, 2005, 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2003, 2005, 2010-2023 Free Software Foundation, Inc.
 dnl
 dnl This program is free software: you can redistribute it and/or modify
 dnl it under the terms of the GNU General Public License as published by
diff --git a/tests/havelib/rpathy/configure.ac 
b/tests/havelib/rpathy/configure.ac
index 56c9b3edb3..58248e69ac 100644
--- a/tests/havelib/rpathy/configure.ac
+++ b/tests/havelib/rpathy/configure.ac
@@ -1,6 +1,6 @@
 dnl Configuration of librpathy that depends on librpathx.
 dnl
-dnl Copyright (C) 2002-2003, 2005, 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2003, 2005, 2010-2023 Free Software Foundation, Inc.
 dnl
 dnl This program is free software: you can redistribute it and/or modify
 dnl it under the terms of the GNU General Public License as published by
diff --git a/tests/havelib/rpathz/configure.ac 
b/tests/havelib/rpathz/configure.ac
index 04a1f9ef2e..54460668ae 100644
--- a/tests/havelib/rpathz/configure.ac
+++ b/tests/havelib/rpathz/configure.ac
@@ -1,6 +1,6 @@
 dnl Configuration of librpathz that depends on librpathx and librpathy.
 dnl
-dnl Copyright (C) 2002-2003, 2005, 2010-2022 Free Software Foundation, Inc.
+dnl Copyright (C) 2002-2003, 2005, 2010-2023 Free Software Foundation, Inc.
 dnl
 dnl This program is free software: you can redistribute it and/or modify
 dnl it under the terms of the GNU General Public License as published by
diff --git a/tests/iconvsupport.c b/tests/iconvsupport.c
index ee2af0ddad..779ab53ab8 100644
--- a/tests/iconvsupport.c
+++ b/tests/iconvsupport.c
@@ -1,5 +1,5 @@
 /* Test iconv support.
-   Copyright (C) 2018-2022 Free Software Foundation, Inc.
+   Copyright (C) 2018-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/infinity.h b/tests/infinity.h
index 6f68f3681b..ebe9df3c40 100644
--- a/tests/infinity.h
+++ b/tests/infinity.h
@@ -1,5 +1,5 @@
 /* Macros for infinity.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/init.sh b/tests/init.sh
index 7d6afd16e2..6c09392867 100644
--- a/tests/init.sh
+++ b/tests/init.sh
@@ -1,6 +1,6 @@
 # source this file; set up for tests
 
-# Copyright (C) 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/tests/locale.c b/tests/locale.c
index d7ae610386..a71d885eaf 100644
--- a/tests/locale.c
+++ b/tests/locale.c
@@ -1,5 +1,5 @@
 /* Program that prints the names of the categories of the current locale.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/macros.h b/tests/macros.h
index 7f5eb2de2e..eea90567d8 100644
--- a/tests/macros.h
+++ b/tests/macros.h
@@ -1,5 +1,5 @@
 /* Common macros used by gnulib tests.
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/minus-zero.h b/tests/minus-zero.h
index d43d8e32f0..287a3f5937 100644
--- a/tests/minus-zero.h
+++ b/tests/minus-zero.h
@@ -1,5 +1,5 @@
 /* Macros for floating-point negative zero.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/mmap-anon-util.h b/tests/mmap-anon-util.h
index b03a2b8021..08541221fc 100644
--- a/tests/mmap-anon-util.h
+++ b/tests/mmap-anon-util.h
@@ -1,5 +1,5 @@
 /* Some auxiliary stuff for using mmap & friends.
-   Copyright (C) 2002-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/nan.h b/tests/nan.h
index 6a3a239acd..05f141d2a9 100644
--- a/tests/nan.h
+++ b/tests/nan.h
@@ -1,5 +1,5 @@
 /* Macros for not-a-number.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/nap.h b/tests/nap.h
index 37f8009c6d..5dea86d431 100644
--- a/tests/nap.h
+++ b/tests/nap.h
@@ -1,5 +1,5 @@
 /* Assist in file system timestamp tests.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/null-ptr.h b/tests/null-ptr.h
index 1ca7bd0d31..e951b613ba 100644
--- a/tests/null-ptr.h
+++ b/tests/null-ptr.h
@@ -1,5 +1,5 @@
 /* Return a NULL pointer, without letting the compiler know it.
-   Copyright (C) 2017-2022 Free Software Foundation, Inc.
+   Copyright (C) 2017-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/qemu.h b/tests/qemu.h
index 0974573d89..9aa012c84b 100644
--- a/tests/qemu.h
+++ b/tests/qemu.h
@@ -1,5 +1,5 @@
 /* Determine whether the current process is running under QEMU.
-   Copyright (C) 2021-2022 Free Software Foundation, Inc.
+   Copyright (C) 2021-2023 Free Software Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
diff --git a/tests/randomd.c b/tests/randomd.c
index 87e8faefee..c4ebfba9d2 100644
--- a/tests/randomd.c
+++ b/tests/randomd.c
@@ -1,5 +1,5 @@
 /* Some random 'double' numbers used by gnulib tests.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/randomf.c b/tests/randomf.c
index 36aff94dbd..ab7ae34faf 100644
--- a/tests/randomf.c
+++ b/tests/randomf.c
@@ -1,5 +1,5 @@
 /* Some random 'float' numbers used by gnulib tests.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/randoml.c b/tests/randoml.c
index 8feab2a972..a698f7fdfe 100644
--- a/tests/randoml.c
+++ b/tests/randoml.c
@@ -1,5 +1,5 @@
 /* Some random 'long double' numbers used by gnulib tests.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/signature.h b/tests/signature.h
index 7a8ef91a53..e939fec9a3 100644
--- a/tests/signature.h
+++ b/tests/signature.h
@@ -1,5 +1,5 @@
 /* Macro for checking that a function declaration is compliant.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/socket-client.h b/tests/socket-client.h
index 6c10b3194f..51e783eedc 100644
--- a/tests/socket-client.h
+++ b/tests/socket-client.h
@@ -1,5 +1,5 @@
 /* Create sockets for use in tests (client side).
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/socket-server.h b/tests/socket-server.h
index 92052d7b29..56649cfa89 100644
--- a/tests/socket-server.h
+++ b/tests/socket-server.h
@@ -1,5 +1,5 @@
 /* Create sockets for use in tests (server side).
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-_Exit.c b/tests/test-_Exit.c
index 2ae7355c03..e6e58cbfd1 100644
--- a/tests/test-_Exit.c
+++ b/tests/test-_Exit.c
@@ -1,5 +1,5 @@
 /* Test of terminating the current process.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-accept.c b/tests/test-accept.c
index 234de6410b..1d56efc975 100644
--- a/tests/test-accept.c
+++ b/tests/test-accept.c
@@ -1,5 +1,5 @@
 /* Test accepting a connection to a server socket.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-accept4.c b/tests/test-accept4.c
index 5156ee3c61..99f26cfa73 100644
--- a/tests/test-accept4.c
+++ b/tests/test-accept4.c
@@ -1,5 +1,5 @@
 /* Test accepting a connection to a server socket.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-access.c b/tests/test-access.c
index d6b8afc1b7..5f9a4ad216 100644
--- a/tests/test-access.c
+++ b/tests/test-access.c
@@ -1,5 +1,5 @@
 /* Tests of access.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-acos.c b/tests/test-acos.c
index 7f995b9a3c..b0effca5f4 100644
--- a/tests/test-acos.c
+++ b/tests/test-acos.c
@@ -1,5 +1,5 @@
 /* Test of acos() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-acosf.c b/tests/test-acosf.c
index 506c612dc8..b0ffd93560 100644
--- a/tests/test-acosf.c
+++ b/tests/test-acosf.c
@@ -1,5 +1,5 @@
 /* Test of acosf() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-acosl.c b/tests/test-acosl.c
index 83bf936ec7..7839cb635c 100644
--- a/tests/test-acosl.c
+++ b/tests/test-acosl.c
@@ -1,5 +1,5 @@
 /* Test of acosl() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-alignalloc.c b/tests/test-alignalloc.c
index eccaea0e68..30b821bd65 100644
--- a/tests/test-alignalloc.c
+++ b/tests/test-alignalloc.c
@@ -1,6 +1,6 @@
 /* Test alignalloc and alignfree.
 
-   Copyright 2022 Free Software Foundation, Inc.
+   Copyright 2022-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-aligned-malloc.c b/tests/test-aligned-malloc.c
index 7b9b8ab869..56c0c8df2c 100644
--- a/tests/test-aligned-malloc.c
+++ b/tests/test-aligned-malloc.c
@@ -1,6 +1,6 @@
 /* Test of allocating memory with given alignment.
 
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-aligned_alloc.c b/tests/test-aligned_alloc.c
index 1e4180eabe..29695adc82 100644
--- a/tests/test-aligned_alloc.c
+++ b/tests/test-aligned_alloc.c
@@ -1,6 +1,6 @@
 /* Test of allocating memory with given alignment.
 
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-alignof.c b/tests/test-alignof.c
index 0e516f5d1b..4b737e94c5 100644
--- a/tests/test-alignof.c
+++ b/tests/test-alignof.c
@@ -1,5 +1,5 @@
 /* Test of <alignof.h>.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-alloca-opt.c b/tests/test-alloca-opt.c
index a64ed82aa2..b059439c36 100644
--- a/tests/test-alloca-opt.c
+++ b/tests/test-alloca-opt.c
@@ -1,5 +1,5 @@
 /* Test of optional automatic memory allocation.
-   Copyright (C) 2005, 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005, 2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-arcfour.c b/tests/test-arcfour.c
index 143f5bdcc0..a12f58fcc1 100644
--- a/tests/test-arcfour.c
+++ b/tests/test-arcfour.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2005, 2010-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2005, 2010-2023 Free Software Foundation, Inc.
  * Written by Simon Josefsson
  *
  * This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-arctwo.c b/tests/test-arctwo.c
index cbcecc699f..be8f07002e 100644
--- a/tests/test-arctwo.c
+++ b/tests/test-arctwo.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2005, 2010-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2005, 2010-2023 Free Software Foundation, Inc.
  * Written by Simon Josefsson
  *
  * This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-areadlink-with-size.c b/tests/test-areadlink-with-size.c
index a820874f9e..2853c1ffae 100644
--- a/tests/test-areadlink-with-size.c
+++ b/tests/test-areadlink-with-size.c
@@ -1,5 +1,5 @@
 /* Tests of areadlink_with_size.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-areadlink.c b/tests/test-areadlink.c
index 59b3cdf594..45492acd2f 100644
--- a/tests/test-areadlink.c
+++ b/tests/test-areadlink.c
@@ -1,5 +1,5 @@
 /* Tests of areadlink.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-areadlink.h b/tests/test-areadlink.h
index 40fc2f6d9a..32cae3f4d9 100644
--- a/tests/test-areadlink.h
+++ b/tests/test-areadlink.h
@@ -1,5 +1,5 @@
 /* Tests of areadlink and friends.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-areadlinkat-with-size.c 
b/tests/test-areadlinkat-with-size.c
index cf71d66782..0f10bacb2a 100644
--- a/tests/test-areadlinkat-with-size.c
+++ b/tests/test-areadlinkat-with-size.c
@@ -1,5 +1,5 @@
 /* Tests of areadlinkat_with_size.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-areadlinkat.c b/tests/test-areadlinkat.c
index b4959f0758..8f671a0bd4 100644
--- a/tests/test-areadlinkat.c
+++ b/tests/test-areadlinkat.c
@@ -1,5 +1,5 @@
 /* Tests of areadlinkat.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-argmatch.c b/tests/test-argmatch.c
index b05e431266..80aba527a7 100644
--- a/tests/test-argmatch.c
+++ b/tests/test-argmatch.c
@@ -1,5 +1,5 @@
 /* Test of exact or abbreviated match search.
-   Copyright (C) 1990, 1998-1999, 2001-2022 Free Software Foundation, Inc.
+   Copyright (C) 1990, 1998-1999, 2001-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-argp-2.sh b/tests/test-argp-2.sh
index 1cb2e83341..cbe967c50c 100755
--- a/tests/test-argp-2.sh
+++ b/tests/test-argp-2.sh
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Test suite for argp.
-# Copyright (C) 2006-2022 Free Software Foundation, Inc.
+# Copyright (C) 2006-2023 Free Software Foundation, Inc.
 # This file is part of the GNUlib Library.
 #
 # This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-argp-version-etc-1.sh b/tests/test-argp-version-etc-1.sh
index d3e4230766..2a4710e9eb 100755
--- a/tests/test-argp-version-etc-1.sh
+++ b/tests/test-argp-version-etc-1.sh
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Test suite for argp-version-etc.
-# Copyright (C) 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2009-2023 Free Software Foundation, Inc.
 # This file is part of the GNUlib Library.
 #
 # This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-argp-version-etc.c b/tests/test-argp-version-etc.c
index 22f7e3af30..c3f818f0d9 100644
--- a/tests/test-argp-version-etc.c
+++ b/tests/test-argp-version-etc.c
@@ -1,5 +1,5 @@
 /* Test suite for argp-version-etc.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    This file is part of the GNUlib Library.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-argp.c b/tests/test-argp.c
index 6db7596d20..8090148b70 100644
--- a/tests/test-argp.c
+++ b/tests/test-argp.c
@@ -1,5 +1,5 @@
 /* Test suite for argp.
-   Copyright (C) 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2007, 2009-2023 Free Software Foundation, Inc.
    This file is part of the GNUlib Library.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-argv-iter.c b/tests/test-argv-iter.c
index 5f861795f0..ea5803ab46 100644
--- a/tests/test-argv-iter.c
+++ b/tests/test-argv-iter.c
@@ -1,5 +1,5 @@
 /* Test argv iterator
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-arpa_inet-c++.cc b/tests/test-arpa_inet-c++.cc
index 3eb4015e4b..d87dd065b2 100644
--- a/tests/test-arpa_inet-c++.cc
+++ b/tests/test-arpa_inet-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <arpa/inet.h> substitute in C++ mode.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-arpa_inet.c b/tests/test-arpa_inet.c
index cfe4a7a27a..a19192be40 100644
--- a/tests/test-arpa_inet.c
+++ b/tests/test-arpa_inet.c
@@ -1,5 +1,5 @@
 /* Test of <arpa/inet.h> substitute.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-array-mergesort.c b/tests/test-array-mergesort.c
index 5996bc31ec..293cdd0377 100644
--- a/tests/test-array-mergesort.c
+++ b/tests/test-array-mergesort.c
@@ -1,5 +1,5 @@
 /* Test of stable-sorting of an array using mergesort.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify it
    under the terms of the GNU Lesser General Public License as published
diff --git a/tests/test-array_list.c b/tests/test-array_list.c
index 075831d761..8e1d9d028a 100644
--- a/tests/test-array_list.c
+++ b/tests/test-array_list.c
@@ -1,5 +1,5 @@
 /* Test of sequential list data type implementation.
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2007.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-array_map.c b/tests/test-array_map.c
index 358c179221..a1600fc062 100644
--- a/tests/test-array_map.c
+++ b/tests/test-array_map.c
@@ -1,5 +1,5 @@
 /* Test of map data type implementation.
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2018.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-array_omap.c b/tests/test-array_omap.c
index dd28fbeabe..a458a44c5b 100644
--- a/tests/test-array_omap.c
+++ b/tests/test-array_omap.c
@@ -1,5 +1,5 @@
 /* Test of ordered map data type implementation.
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2018.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-array_oset.c b/tests/test-array_oset.c
index 58d0a58548..50ad3536cc 100644
--- a/tests/test-array_oset.c
+++ b/tests/test-array_oset.c
@@ -1,5 +1,5 @@
 /* Test of ordered set data type implementation.
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2007.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-array_set.c b/tests/test-array_set.c
index a9cd93cbfd..c44ce82a18 100644
--- a/tests/test-array_set.c
+++ b/tests/test-array_set.c
@@ -1,5 +1,5 @@
 /* Test of set data type implementation.
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2018.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-asin.c b/tests/test-asin.c
index 3f1bbfb695..2ca3158cd8 100644
--- a/tests/test-asin.c
+++ b/tests/test-asin.c
@@ -1,5 +1,5 @@
 /* Test of asin() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-asinf.c b/tests/test-asinf.c
index ba0a9e9b29..48783a69ba 100644
--- a/tests/test-asinf.c
+++ b/tests/test-asinf.c
@@ -1,5 +1,5 @@
 /* Test of asinf() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-asinl.c b/tests/test-asinl.c
index 5270398448..8ce7717edc 100644
--- a/tests/test-asinl.c
+++ b/tests/test-asinl.c
@@ -1,5 +1,5 @@
 /* Test of asinl() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-assert-h-c++.cc b/tests/test-assert-h-c++.cc
index 1fc452338d..4fa23bfeec 100644
--- a/tests/test-assert-h-c++.cc
+++ b/tests/test-assert-h-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <assert.h> substitute in C++ mode.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-assert-h-c++2.cc b/tests/test-assert-h-c++2.cc
index 9df136cfff..3c19de325c 100644
--- a/tests/test-assert-h-c++2.cc
+++ b/tests/test-assert-h-c++2.cc
@@ -1,5 +1,5 @@
 /* Test of <assert.h> substitute in C++ mode.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-assert.c b/tests/test-assert.c
index 45b0c0f457..1bb79ae1b9 100644
--- a/tests/test-assert.c
+++ b/tests/test-assert.c
@@ -1,5 +1,5 @@
 /* Test assert.h and static_assert.
-   Copyright 2022 Free Software Foundation, Inc.
+   Copyright 2022-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-astrxfrm.c b/tests/test-astrxfrm.c
index 8e3349afec..1cd19e94f2 100644
--- a/tests/test-astrxfrm.c
+++ b/tests/test-astrxfrm.c
@@ -1,5 +1,5 @@
 /* Test of astrxfrm() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-asyncsafe-linked_list-strong.c 
b/tests/test-asyncsafe-linked_list-strong.c
index 7af421ef84..3cbde4d0bf 100644
--- a/tests/test-asyncsafe-linked_list-strong.c
+++ b/tests/test-asyncsafe-linked_list-strong.c
@@ -1,5 +1,5 @@
 /* Test of async-safe sequential list data type implementation.
-   Copyright (C) 2021-2022 Free Software Foundation, Inc.
+   Copyright (C) 2021-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-asyncsafe-linked_list-weak.c 
b/tests/test-asyncsafe-linked_list-weak.c
index 280c0e6e8d..992f0c0832 100644
--- a/tests/test-asyncsafe-linked_list-weak.c
+++ b/tests/test-asyncsafe-linked_list-weak.c
@@ -1,5 +1,5 @@
 /* Test of async-safe sequential list data type implementation.
-   Copyright (C) 2021-2022 Free Software Foundation, Inc.
+   Copyright (C) 2021-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-asyncsafe-spin1.c b/tests/test-asyncsafe-spin1.c
index 8fe12f2cca..6983631f39 100644
--- a/tests/test-asyncsafe-spin1.c
+++ b/tests/test-asyncsafe-spin1.c
@@ -1,5 +1,5 @@
 /* Test of spin locks for communication between threads and signal handlers.
-   Copyright (C) 2005, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005, 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-asyncsafe-spin2.c b/tests/test-asyncsafe-spin2.c
index 797bbbd806..ac4eab52c3 100644
--- a/tests/test-asyncsafe-spin2.c
+++ b/tests/test-asyncsafe-spin2.c
@@ -1,5 +1,5 @@
 /* Test of spin locks for communication between threads and signal handlers.
-   Copyright (C) 2005, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005, 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-atan.c b/tests/test-atan.c
index adef2f9100..1c4a1789e0 100644
--- a/tests/test-atan.c
+++ b/tests/test-atan.c
@@ -1,5 +1,5 @@
 /* Test of atan() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-atan2.c b/tests/test-atan2.c
index 4a7969edd8..95fb77e57d 100644
--- a/tests/test-atan2.c
+++ b/tests/test-atan2.c
@@ -1,5 +1,5 @@
 /* Test of atan2() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-atan2f.c b/tests/test-atan2f.c
index ce35fd1b59..e69a70a14e 100644
--- a/tests/test-atan2f.c
+++ b/tests/test-atan2f.c
@@ -1,5 +1,5 @@
 /* Test of atan2f() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-atanf.c b/tests/test-atanf.c
index 40e946a8e0..a4a7976d37 100644
--- a/tests/test-atanf.c
+++ b/tests/test-atanf.c
@@ -1,5 +1,5 @@
 /* Test of atanf() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-atanl.c b/tests/test-atanl.c
index 7279cd80eb..1d4cd371ad 100644
--- a/tests/test-atanl.c
+++ b/tests/test-atanl.c
@@ -1,5 +1,5 @@
 /* Test of atanl() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-atexit.c b/tests/test-atexit.c
index 95f05a32e6..fd4c5bc578 100644
--- a/tests/test-atexit.c
+++ b/tests/test-atexit.c
@@ -1,5 +1,5 @@
 /* Test of execution of program termination handlers.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-avltree_list.c b/tests/test-avltree_list.c
index 7e8bae93d7..fcd190974d 100644
--- a/tests/test-avltree_list.c
+++ b/tests/test-avltree_list.c
@@ -1,5 +1,5 @@
 /* Test of sequential list data type implementation.
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-avltree_omap.c b/tests/test-avltree_omap.c
index 5e1233b656..afc01d2ebf 100644
--- a/tests/test-avltree_omap.c
+++ b/tests/test-avltree_omap.c
@@ -1,5 +1,5 @@
 /* Test of ordered map data type implementation.
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2018.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-avltree_oset.c b/tests/test-avltree_oset.c
index 93f14e400a..8ce8efbd9f 100644
--- a/tests/test-avltree_oset.c
+++ b/tests/test-avltree_oset.c
@@ -1,5 +1,5 @@
 /* Test of ordered set data type implementation.
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-avltreehash_list.c b/tests/test-avltreehash_list.c
index 2f902505ca..652b5d2716 100644
--- a/tests/test-avltreehash_list.c
+++ b/tests/test-avltreehash_list.c
@@ -1,5 +1,5 @@
 /* Test of sequential list data type implementation.
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-base32.c b/tests/test-base32.c
index 6596620cca..2e7d3c53b3 100644
--- a/tests/test-base32.c
+++ b/tests/test-base32.c
@@ -1,5 +1,5 @@
 /* Self tests for base32.
-   Copyright (C) 2004, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2004, 2008-2023 Free Software Foundation, Inc.
    Based on the tests for base64 written by Simon Josefsson.
    Adapted for base32 by Gijs van Tulder.
 
diff --git a/tests/test-base64.c b/tests/test-base64.c
index 31042450b3..5196db09f4 100644
--- a/tests/test-base64.c
+++ b/tests/test-base64.c
@@ -1,5 +1,5 @@
 /* Self tests for base64.
-   Copyright (C) 2004, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2004, 2008-2023 Free Software Foundation, Inc.
    Written by Simon Josefsson.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-binary-io.c b/tests/test-binary-io.c
index 2d71ae9c22..a474d37179 100644
--- a/tests/test-binary-io.c
+++ b/tests/test-binary-io.c
@@ -1,5 +1,5 @@
 /* Test of binary mode I/O.
-   Copyright (C) 2005, 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005, 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-bind.c b/tests/test-bind.c
index 17063bf74a..98b3e5b051 100644
--- a/tests/test-bind.c
+++ b/tests/test-bind.c
@@ -1,5 +1,5 @@
 /* Test binding a server socket to a port.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-bitrotate.c b/tests/test-bitrotate.c
index da5f951f63..f92b31b520 100644
--- a/tests/test-bitrotate.c
+++ b/tests/test-bitrotate.c
@@ -1,5 +1,5 @@
 /* Test of <bitrotate.h> substitute.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-bitset.c b/tests/test-bitset.c
index 2db6c1e464..8c1d6aee7b 100644
--- a/tests/test-bitset.c
+++ b/tests/test-bitset.c
@@ -1,5 +1,5 @@
 /* Test of bitset.
-   Copyright (C) 2018-2022 Free Software Foundation, Inc.
+   Copyright (C) 2018-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-btoc32.c b/tests/test-btoc32.c
index 2409edf117..90b38cfcf5 100644
--- a/tests/test-btoc32.c
+++ b/tests/test-btoc32.c
@@ -1,5 +1,5 @@
 /* Test of conversion of unibyte character to 32-bit wide character.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-btowc.c b/tests/test-btowc.c
index 32806f07b1..849db470f4 100644
--- a/tests/test-btowc.c
+++ b/tests/test-btowc.c
@@ -1,5 +1,5 @@
 /* Test of conversion of unibyte character to wide character.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-byteswap.c b/tests/test-byteswap.c
index f7683653be..916338d936 100644
--- a/tests/test-byteswap.c
+++ b/tests/test-byteswap.c
@@ -1,5 +1,5 @@
 /* Test of <byteswap.h> substitute.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-c-ctype.c b/tests/test-c-ctype.c
index 9870520d96..ad306b687a 100644
--- a/tests/test-c-ctype.c
+++ b/tests/test-c-ctype.c
@@ -1,5 +1,5 @@
 /* Test of character handling in C locale.
-   Copyright (C) 2005, 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005, 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-c-dtoastr.c b/tests/test-c-dtoastr.c
index 2f5eb27b3b..073e7fc887 100644
--- a/tests/test-c-dtoastr.c
+++ b/tests/test-c-dtoastr.c
@@ -1,5 +1,5 @@
 /* Test of c_dtoastr() function.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-c-ldtoastr.c b/tests/test-c-ldtoastr.c
index be88a05adc..025651605f 100644
--- a/tests/test-c-ldtoastr.c
+++ b/tests/test-c-ldtoastr.c
@@ -1,5 +1,5 @@
 /* Test of c_ldtoastr() function.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-c-snprintf.c b/tests/test-c-snprintf.c
index 49e635d052..86c5389349 100644
--- a/tests/test-c-snprintf.c
+++ b/tests/test-c-snprintf.c
@@ -1,5 +1,5 @@
 /* Test of c_snprintf() function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-c-stack.c b/tests/test-c-stack.c
index 8642437e8f..2f689d9183 100644
--- a/tests/test-c-stack.c
+++ b/tests/test-c-stack.c
@@ -1,5 +1,5 @@
 /* Test of c-stack module.
-   Copyright (C) 2002, 2004, 2006, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2004, 2006, 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-c-strcasecmp.c b/tests/test-c-strcasecmp.c
index 1bb518dadc..ad33a68e37 100644
--- a/tests/test-c-strcasecmp.c
+++ b/tests/test-c-strcasecmp.c
@@ -1,5 +1,5 @@
 /* Test of case-insensitive string comparison function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-c-strcasestr.c b/tests/test-c-strcasestr.c
index 514a4705f2..818f5a994b 100644
--- a/tests/test-c-strcasestr.c
+++ b/tests/test-c-strcasestr.c
@@ -1,5 +1,5 @@
 /* Test of case-insensitive searching in a string.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-c-strncasecmp.c b/tests/test-c-strncasecmp.c
index 734eb87b0a..c8501a2e27 100644
--- a/tests/test-c-strncasecmp.c
+++ b/tests/test-c-strncasecmp.c
@@ -1,5 +1,5 @@
 /* Test of case-insensitive string comparison function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-c-strstr.c b/tests/test-c-strstr.c
index 8a4267ef50..d8f8465b29 100644
--- a/tests/test-c-strstr.c
+++ b/tests/test-c-strstr.c
@@ -1,5 +1,5 @@
 /* Test of searching in a string.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-c-vasprintf.c b/tests/test-c-vasprintf.c
index ece8a035b5..5ef4fd0465 100644
--- a/tests/test-c-vasprintf.c
+++ b/tests/test-c-vasprintf.c
@@ -1,5 +1,5 @@
 /* Test of c_asprintf() and c_vasprintf() functions.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-c-vsnprintf.c b/tests/test-c-vsnprintf.c
index aec81f4862..dcccf45a30 100644
--- a/tests/test-c-vsnprintf.c
+++ b/tests/test-c-vsnprintf.c
@@ -1,5 +1,5 @@
 /* Test of c_vsnprintf() function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-c-xvasprintf.c b/tests/test-c-xvasprintf.c
index 50e34c88f7..283538b15d 100644
--- a/tests/test-c-xvasprintf.c
+++ b/tests/test-c-xvasprintf.c
@@ -1,5 +1,5 @@
 /* Test of c_xasprintf() and c_xvasprintf() functions.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-c32isalnum.c b/tests/test-c32isalnum.c
index 0295a2aad8..1d43fe261f 100644
--- a/tests/test-c32isalnum.c
+++ b/tests/test-c32isalnum.c
@@ -1,5 +1,5 @@
 /* Test of c32isalnum() function.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-c32isalpha.c b/tests/test-c32isalpha.c
index a5b7a2501f..dcb24d1fe8 100644
--- a/tests/test-c32isalpha.c
+++ b/tests/test-c32isalpha.c
@@ -1,5 +1,5 @@
 /* Test of c32isalpha() function.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-c32isblank.c b/tests/test-c32isblank.c
index 35ffdef21a..1f5a7747cb 100644
--- a/tests/test-c32isblank.c
+++ b/tests/test-c32isblank.c
@@ -1,5 +1,5 @@
 /* Test of c32isblank() function.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-c32iscntrl.c b/tests/test-c32iscntrl.c
index 2cd1f470c6..4cb23e1f8d 100644
--- a/tests/test-c32iscntrl.c
+++ b/tests/test-c32iscntrl.c
@@ -1,5 +1,5 @@
 /* Test of c32iscntrl() function.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-c32isdigit.c b/tests/test-c32isdigit.c
index 19f07c3570..73df34b24a 100644
--- a/tests/test-c32isdigit.c
+++ b/tests/test-c32isdigit.c
@@ -1,5 +1,5 @@
 /* Test of c32isdigit() function.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-c32isgraph.c b/tests/test-c32isgraph.c
index 6522517828..8b10919884 100644
--- a/tests/test-c32isgraph.c
+++ b/tests/test-c32isgraph.c
@@ -1,5 +1,5 @@
 /* Test of c32isgraph() function.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-c32islower.c b/tests/test-c32islower.c
index d0a42a4978..78de25ae60 100644
--- a/tests/test-c32islower.c
+++ b/tests/test-c32islower.c
@@ -1,5 +1,5 @@
 /* Test of c32islower() function.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-c32isprint.c b/tests/test-c32isprint.c
index d36eadedb1..498605d8f7 100644
--- a/tests/test-c32isprint.c
+++ b/tests/test-c32isprint.c
@@ -1,5 +1,5 @@
 /* Test of c32isprint() function.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-c32ispunct.c b/tests/test-c32ispunct.c
index c366638ad0..168ad283b9 100644
--- a/tests/test-c32ispunct.c
+++ b/tests/test-c32ispunct.c
@@ -1,5 +1,5 @@
 /* Test of c32ispunct() function.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-c32isspace.c b/tests/test-c32isspace.c
index 9b1d558e9b..86170d9edc 100644
--- a/tests/test-c32isspace.c
+++ b/tests/test-c32isspace.c
@@ -1,5 +1,5 @@
 /* Test of c32isspace() function.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-c32isupper.c b/tests/test-c32isupper.c
index 67f4faf658..465a544664 100644
--- a/tests/test-c32isupper.c
+++ b/tests/test-c32isupper.c
@@ -1,5 +1,5 @@
 /* Test of c32isupper() function.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-c32isxdigit.c b/tests/test-c32isxdigit.c
index d4a2675dc8..e4359f779f 100644
--- a/tests/test-c32isxdigit.c
+++ b/tests/test-c32isxdigit.c
@@ -1,5 +1,5 @@
 /* Test of c32isxdigit() function.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-c32rtomb-w32.c b/tests/test-c32rtomb-w32.c
index 685f4d14c3..06cfa1e44f 100644
--- a/tests/test-c32rtomb-w32.c
+++ b/tests/test-c32rtomb-w32.c
@@ -1,5 +1,5 @@
 /* Test of conversion of wide character to multibyte character.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-c32rtomb.c b/tests/test-c32rtomb.c
index 29466409c9..bb4b4bec0b 100644
--- a/tests/test-c32rtomb.c
+++ b/tests/test-c32rtomb.c
@@ -1,5 +1,5 @@
 /* Test of conversion of wide character to multibyte character.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-c32snrtombs.c b/tests/test-c32snrtombs.c
index 78d9815a2b..3e397882f3 100644
--- a/tests/test-c32snrtombs.c
+++ b/tests/test-c32snrtombs.c
@@ -1,5 +1,5 @@
 /* Test of conversion of 32-bit wide string to string.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-c32srtombs.c b/tests/test-c32srtombs.c
index 5a297afcda..1b856a992c 100644
--- a/tests/test-c32srtombs.c
+++ b/tests/test-c32srtombs.c
@@ -1,5 +1,5 @@
 /* Test of conversion of 32-bit wide string to string.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-c32stombs.c b/tests/test-c32stombs.c
index 2b834752c6..d54bc37802 100644
--- a/tests/test-c32stombs.c
+++ b/tests/test-c32stombs.c
@@ -1,5 +1,5 @@
 /* Test of conversion of 32-bit wide string to string.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-call_once.c b/tests/test-call_once.c
index bd042e41b5..6f515e42c7 100644
--- a/tests/test-call_once.c
+++ b/tests/test-call_once.c
@@ -1,5 +1,5 @@
 /* Test of once-only execution in multithreaded situations.
-   Copyright (C) 2018-2022 Free Software Foundation, Inc.
+   Copyright (C) 2018-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-calloc-gnu.c b/tests/test-calloc-gnu.c
index 4a7b7745f8..bcd47d4f01 100644
--- a/tests/test-calloc-gnu.c
+++ b/tests/test-calloc-gnu.c
@@ -1,5 +1,5 @@
 /* Test of calloc function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-canonicalize-lgpl.c b/tests/test-canonicalize-lgpl.c
index a750421788..9d249dff54 100644
--- a/tests/test-canonicalize-lgpl.c
+++ b/tests/test-canonicalize-lgpl.c
@@ -1,5 +1,5 @@
 /* Test of execution of file name canonicalization.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-canonicalize.c b/tests/test-canonicalize.c
index b52d026580..8c5207ff7d 100644
--- a/tests/test-canonicalize.c
+++ b/tests/test-canonicalize.c
@@ -1,5 +1,5 @@
 /* Test of execution of file name canonicalization.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-carray_list.c b/tests/test-carray_list.c
index 5f76f5bc3e..1784c1cdac 100644
--- a/tests/test-carray_list.c
+++ b/tests/test-carray_list.c
@@ -1,5 +1,5 @@
 /* Test of sequential list data type implementation.
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-cbrt-ieee.c b/tests/test-cbrt-ieee.c
index b2a68bdaa2..be31c8bb9e 100644
--- a/tests/test-cbrt-ieee.c
+++ b/tests/test-cbrt-ieee.c
@@ -1,5 +1,5 @@
 /* Test of cbrt() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-cbrt-ieee.h b/tests/test-cbrt-ieee.h
index b59d1346b7..83f7054ff0 100644
--- a/tests/test-cbrt-ieee.h
+++ b/tests/test-cbrt-ieee.h
@@ -1,5 +1,5 @@
 /* Test of cbrt*() function family.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-cbrt.c b/tests/test-cbrt.c
index 4236515536..64a16ccbf5 100644
--- a/tests/test-cbrt.c
+++ b/tests/test-cbrt.c
@@ -1,5 +1,5 @@
 /* Test of cbrt() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-cbrt.h b/tests/test-cbrt.h
index 653ae82125..2f8667ceaa 100644
--- a/tests/test-cbrt.h
+++ b/tests/test-cbrt.h
@@ -1,5 +1,5 @@
 /* Test of cbrt*() function family.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-cbrtf-ieee.c b/tests/test-cbrtf-ieee.c
index 055646c658..ab1a1879f2 100644
--- a/tests/test-cbrtf-ieee.c
+++ b/tests/test-cbrtf-ieee.c
@@ -1,5 +1,5 @@
 /* Test of cbrtf() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-cbrtf.c b/tests/test-cbrtf.c
index f8b6532bcb..6e0d5ed6ba 100644
--- a/tests/test-cbrtf.c
+++ b/tests/test-cbrtf.c
@@ -1,5 +1,5 @@
 /* Test of cbrtf() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-cbrtl-ieee.c b/tests/test-cbrtl-ieee.c
index e367e5f3cc..96cb2aff46 100644
--- a/tests/test-cbrtl-ieee.c
+++ b/tests/test-cbrtl-ieee.c
@@ -1,5 +1,5 @@
 /* Test of cbrtl() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-cbrtl.c b/tests/test-cbrtl.c
index 33a13ccb33..340b2f7d50 100644
--- a/tests/test-cbrtl.c
+++ b/tests/test-cbrtl.c
@@ -1,5 +1,5 @@
 /* Test of cbrtl() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-ceil-ieee.c b/tests/test-ceil-ieee.c
index c1d4bcb490..cc92935833 100644
--- a/tests/test-ceil-ieee.c
+++ b/tests/test-ceil-ieee.c
@@ -1,5 +1,5 @@
 /* Test of rounding towards positive infinity.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-ceil1.c b/tests/test-ceil1.c
index 29887e3409..4811284614 100644
--- a/tests/test-ceil1.c
+++ b/tests/test-ceil1.c
@@ -1,5 +1,5 @@
 /* Test of rounding towards positive infinity.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-ceil2.c b/tests/test-ceil2.c
index 1bc08aabf8..cfd377eeef 100644
--- a/tests/test-ceil2.c
+++ b/tests/test-ceil2.c
@@ -1,5 +1,5 @@
 /* Test of rounding towards positive infinity.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-ceilf-ieee.c b/tests/test-ceilf-ieee.c
index f22e60324a..02edc0d92a 100644
--- a/tests/test-ceilf-ieee.c
+++ b/tests/test-ceilf-ieee.c
@@ -1,5 +1,5 @@
 /* Test of rounding towards positive infinity.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-ceilf1.c b/tests/test-ceilf1.c
index 787d64ea79..61a4ae99b5 100644
--- a/tests/test-ceilf1.c
+++ b/tests/test-ceilf1.c
@@ -1,5 +1,5 @@
 /* Test of rounding towards positive infinity.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-ceilf2.c b/tests/test-ceilf2.c
index cc579a7ffe..8b1401e7a3 100644
--- a/tests/test-ceilf2.c
+++ b/tests/test-ceilf2.c
@@ -1,5 +1,5 @@
 /* Test of rounding towards positive infinity.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-ceill-ieee.c b/tests/test-ceill-ieee.c
index 97ce039b61..e7fe114cd9 100644
--- a/tests/test-ceill-ieee.c
+++ b/tests/test-ceill-ieee.c
@@ -1,5 +1,5 @@
 /* Test of rounding towards positive infinity.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-ceill.c b/tests/test-ceill.c
index ddb38ecb17..7e6130349f 100644
--- a/tests/test-ceill.c
+++ b/tests/test-ceill.c
@@ -1,5 +1,5 @@
 /* Test of rounding towards positive infinity.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-chdir.c b/tests/test-chdir.c
index e649753362..80c74290b6 100644
--- a/tests/test-chdir.c
+++ b/tests/test-chdir.c
@@ -1,5 +1,5 @@
 /* Test changing to a directory.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-chmod.c b/tests/test-chmod.c
index 7834dcd906..36c8bd466d 100644
--- a/tests/test-chmod.c
+++ b/tests/test-chmod.c
@@ -1,5 +1,5 @@
 /* Test changing the protections of a file.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-chown.c b/tests/test-chown.c
index ec99e40cf0..7d876eaf1e 100644
--- a/tests/test-chown.c
+++ b/tests/test-chown.c
@@ -1,5 +1,5 @@
 /* Tests of chown.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-chown.h b/tests/test-chown.h
index c1cf7bb8f8..e8c3d49ff9 100644
--- a/tests/test-chown.h
+++ b/tests/test-chown.h
@@ -1,5 +1,5 @@
 /* Tests of chown.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-chownat.c b/tests/test-chownat.c
index 907d794395..9caab1fea8 100644
--- a/tests/test-chownat.c
+++ b/tests/test-chownat.c
@@ -1,5 +1,5 @@
 /* Tests of chownat and lchownat
-   Copyright 2020-2022 Free Software Foundation, Inc.
+   Copyright 2020-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-cloexec.c b/tests/test-cloexec.c
index 6069e537b1..e8c8eb61a6 100644
--- a/tests/test-cloexec.c
+++ b/tests/test-cloexec.c
@@ -1,5 +1,5 @@
 /* Test duplicating non-inheritable file descriptors.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-close.c b/tests/test-close.c
index db25aab011..9e3ec867bd 100644
--- a/tests/test-close.c
+++ b/tests/test-close.c
@@ -1,5 +1,5 @@
 /* Test closing a file or socket.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-closein.c b/tests/test-closein.c
index cbe46d037a..e9187f76e8 100644
--- a/tests/test-closein.c
+++ b/tests/test-closein.c
@@ -1,5 +1,5 @@
 /* Test of closein module.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-cnd.c b/tests/test-cnd.c
index 3678dc9710..d7fcaba649 100644
--- a/tests/test-cnd.c
+++ b/tests/test-cnd.c
@@ -1,5 +1,5 @@
 /* Test of condition variables in multithreaded situations.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-cond.c b/tests/test-cond.c
index 925fd88612..6f2cf97b21 100644
--- a/tests/test-cond.c
+++ b/tests/test-cond.c
@@ -1,5 +1,5 @@
 /* Test of condition variables in multithreaded situations.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-connect.c b/tests/test-connect.c
index 2a93d01f9a..84b1367b33 100644
--- a/tests/test-connect.c
+++ b/tests/test-connect.c
@@ -1,5 +1,5 @@
 /* Test connecting a client socket.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-copy-acl.c b/tests/test-copy-acl.c
index fd5023a2c5..de47b9a86f 100644
--- a/tests/test-copy-acl.c
+++ b/tests/test-copy-acl.c
@@ -1,5 +1,5 @@
 /* Test of copying of files.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-copy-file.c b/tests/test-copy-file.c
index bc9308f5af..35d6666608 100644
--- a/tests/test-copy-file.c
+++ b/tests/test-copy-file.c
@@ -1,5 +1,5 @@
 /* Test of copying of files.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-copysign.c b/tests/test-copysign.c
index 990a211e6c..9572252822 100644
--- a/tests/test-copysign.c
+++ b/tests/test-copysign.c
@@ -1,5 +1,5 @@
 /* Test of copysign() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-copysignf.c b/tests/test-copysignf.c
index bdff3d28b7..1b89cde77f 100644
--- a/tests/test-copysignf.c
+++ b/tests/test-copysignf.c
@@ -1,5 +1,5 @@
 /* Test of copysignf() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-copysignl.c b/tests/test-copysignl.c
index 10bfd6740a..13b8e72e9d 100644
--- a/tests/test-copysignl.c
+++ b/tests/test-copysignl.c
@@ -1,5 +1,5 @@
 /* Test of copysignl() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-cos.c b/tests/test-cos.c
index eebf2fa2f3..666ec7fe38 100644
--- a/tests/test-cos.c
+++ b/tests/test-cos.c
@@ -1,5 +1,5 @@
 /* Test of cos() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-cosf.c b/tests/test-cosf.c
index 7ae182c974..86cbdb3dc8 100644
--- a/tests/test-cosf.c
+++ b/tests/test-cosf.c
@@ -1,5 +1,5 @@
 /* Test of cosf() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-cosh.c b/tests/test-cosh.c
index 92a2a05ee4..09131b5903 100644
--- a/tests/test-cosh.c
+++ b/tests/test-cosh.c
@@ -1,5 +1,5 @@
 /* Test of cosh() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-coshf.c b/tests/test-coshf.c
index faa6a0a215..c15ebd3db6 100644
--- a/tests/test-coshf.c
+++ b/tests/test-coshf.c
@@ -1,5 +1,5 @@
 /* Test of coshf() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-cosl.c b/tests/test-cosl.c
index 9d9f1cc1f5..a12256196e 100644
--- a/tests/test-cosl.c
+++ b/tests/test-cosl.c
@@ -1,5 +1,5 @@
 /* Test of cosl() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-count-leading-zeros.c b/tests/test-count-leading-zeros.c
index d85edd48af..30fa9801df 100644
--- a/tests/test-count-leading-zeros.c
+++ b/tests/test-count-leading-zeros.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2012-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2012-2023 Free Software Foundation, Inc.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/tests/test-count-one-bits.c b/tests/test-count-one-bits.c
index e52ffb7877..63dba7a86e 100644
--- a/tests/test-count-one-bits.c
+++ b/tests/test-count-one-bits.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2007-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2007-2023 Free Software Foundation, Inc.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/tests/test-count-trailing-zeros.c 
b/tests/test-count-trailing-zeros.c
index a319ed3608..f53ae14106 100644
--- a/tests/test-count-trailing-zeros.c
+++ b/tests/test-count-trailing-zeros.c
@@ -1,5 +1,5 @@
 /* Test counting of trailing zeros.
-   Copyright (C) 2013-2022 Free Software Foundation, Inc.
+   Copyright (C) 2013-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-crc.c b/tests/test-crc.c
index 0b4dc0f376..266d8be35d 100644
--- a/tests/test-crc.c
+++ b/tests/test-crc.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2005-2007, 2010-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2005-2007, 2010-2023 Free Software Foundation, Inc.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/tests/test-creat.c b/tests/test-creat.c
index 7aa2c7deb0..bad98e5a88 100644
--- a/tests/test-creat.c
+++ b/tests/test-creat.c
@@ -1,5 +1,5 @@
 /* Test of creating a file.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-ctype-c++.cc b/tests/test-ctype-c++.cc
index 1f4be4742b..c5728b8c43 100644
--- a/tests/test-ctype-c++.cc
+++ b/tests/test-ctype-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <ctype.h> substitute in C++ mode.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-ctype-c++2.cc b/tests/test-ctype-c++2.cc
index 671270cc72..07b2ca19ff 100644
--- a/tests/test-ctype-c++2.cc
+++ b/tests/test-ctype-c++2.cc
@@ -1,5 +1,5 @@
 /* Test of <ctype.h> substitute in C++ mode.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-ctype.c b/tests/test-ctype.c
index 93c4e32b6d..3b385fd64b 100644
--- a/tests/test-ctype.c
+++ b/tests/test-ctype.c
@@ -1,5 +1,5 @@
 /* Test of <ctype.h> substitute.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-des.c b/tests/test-des.c
index b6ecda76e2..41e8077c4d 100644
--- a/tests/test-des.c
+++ b/tests/test-des.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2005, 2007, 2010-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2005, 2007, 2010-2023 Free Software Foundation, Inc.
  * Written by Simon Josefsson
  *
  * This program is free software; you can redistribute it and/or modify
diff --git a/tests/test-dfa-invalid-char-class.sh 
b/tests/test-dfa-invalid-char-class.sh
index 5ec73b66ab..1428d7966a 100755
--- a/tests/test-dfa-invalid-char-class.sh
+++ b/tests/test-dfa-invalid-char-class.sh
@@ -1,7 +1,7 @@
 #!/bin/sh
 # This use of our DFA-testing helper would fail for grep-2.21.
 
-# Copyright 2014-2022 Free Software Foundation, Inc.
+# Copyright 2014-2023 Free Software Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/tests/test-dfa-invalid-merge.sh b/tests/test-dfa-invalid-merge.sh
index 937a6ae4c2..d5314cb64b 100755
--- a/tests/test-dfa-invalid-merge.sh
+++ b/tests/test-dfa-invalid-merge.sh
@@ -3,7 +3,7 @@
 # a+a+a to a+a, thus possibly reporting a false match.
 # Introduced in v0.1-2111-g4299106ce
 
-# Copyright 2020-2022 Free Software Foundation, Inc.
+# Copyright 2020-2023 Free Software Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/tests/test-dfa-match-aux.c b/tests/test-dfa-match-aux.c
index 8e1c9088a1..b39bb6da86 100644
--- a/tests/test-dfa-match-aux.c
+++ b/tests/test-dfa-match-aux.c
@@ -1,6 +1,6 @@
 /* Auxiliary program to test a DFA code path that cannot be triggered
    by grep or gawk.
-   Copyright 2014-2022 Free Software Foundation, Inc.
+   Copyright 2014-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-dfa-match.sh b/tests/test-dfa-match.sh
index 4561584c4c..a5aa68c6e1 100755
--- a/tests/test-dfa-match.sh
+++ b/tests/test-dfa-match.sh
@@ -1,7 +1,7 @@
 #!/bin/sh
 # This would fail with grep-2.21's dfa.c.
 
-# Copyright 2014-2022 Free Software Foundation, Inc.
+# Copyright 2014-2023 Free Software Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/tests/test-di-set.c b/tests/test-di-set.c
index 0427c961e9..2f9f06a4cb 100644
--- a/tests/test-di-set.c
+++ b/tests/test-di-set.c
@@ -1,5 +1,5 @@
 /* Test the di-set module.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-digest.h b/tests/test-digest.h
index 73e0d9c042..da6537315a 100644
--- a/tests/test-digest.h
+++ b/tests/test-digest.h
@@ -1,5 +1,5 @@
 /* Test of message digests.
-   Copyright (C) 2018-2022 Free Software Foundation, Inc.
+   Copyright (C) 2018-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-dirent-c++.cc b/tests/test-dirent-c++.cc
index d375fd9fa6..df571f2b79 100644
--- a/tests/test-dirent-c++.cc
+++ b/tests/test-dirent-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <dirent.h> substitute in C++ mode.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-dirent-safer.c b/tests/test-dirent-safer.c
index 80755f95fd..fd36aa62f6 100644
--- a/tests/test-dirent-safer.c
+++ b/tests/test-dirent-safer.c
@@ -1,5 +1,5 @@
 /* Test that directory streams leave standard fds alone.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-dirent.c b/tests/test-dirent.c
index f3468b8b18..68970566d8 100644
--- a/tests/test-dirent.c
+++ b/tests/test-dirent.c
@@ -1,5 +1,5 @@
 /* Test of <dirent.h> substitute.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-dirname.c b/tests/test-dirname.c
index 33cfe58487..bebd732f0a 100644
--- a/tests/test-dirname.c
+++ b/tests/test-dirname.c
@@ -1,5 +1,5 @@
 /* Test the gnulib dirname module.
-   Copyright (C) 2005-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005-2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-dprintf-posix.c b/tests/test-dprintf-posix.c
index cade0d12c0..f0887bfc61 100644
--- a/tests/test-dprintf-posix.c
+++ b/tests/test-dprintf-posix.c
@@ -1,5 +1,5 @@
 /* Test of POSIX compatible dprintf() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-dprintf-posix2.c b/tests/test-dprintf-posix2.c
index 856f48318e..2440046790 100644
--- a/tests/test-dprintf-posix2.c
+++ b/tests/test-dprintf-posix2.c
@@ -1,5 +1,5 @@
 /* Test of POSIX compatible dprintf() function.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-dprintf.c b/tests/test-dprintf.c
index 2567792d39..0284d39276 100644
--- a/tests/test-dprintf.c
+++ b/tests/test-dprintf.c
@@ -1,5 +1,5 @@
 /* Test of dprintf() function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-dup-safer.c b/tests/test-dup-safer.c
index 329ee033a7..c2de3003ff 100644
--- a/tests/test-dup-safer.c
+++ b/tests/test-dup-safer.c
@@ -1,5 +1,5 @@
 /* Test that dup_safer leaves standard fds alone.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-dup.c b/tests/test-dup.c
index 87bf6c7fa3..0390caf9f4 100644
--- a/tests/test-dup.c
+++ b/tests/test-dup.c
@@ -1,5 +1,5 @@
 /* Test duplicating a file descriptor.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-dup2.c b/tests/test-dup2.c
index e4ec1c2549..85133ea1e4 100644
--- a/tests/test-dup2.c
+++ b/tests/test-dup2.c
@@ -1,5 +1,5 @@
 /* Test duplicating file descriptors.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-dup3.c b/tests/test-dup3.c
index 87d83c77a1..3fab570e12 100644
--- a/tests/test-dup3.c
+++ b/tests/test-dup3.c
@@ -1,5 +1,5 @@
 /* Test duplicating file descriptors.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-duplocale.c b/tests/test-duplocale.c
index bf82f08607..d38064820e 100644
--- a/tests/test-duplocale.c
+++ b/tests/test-duplocale.c
@@ -1,5 +1,5 @@
 /* Test of duplicating a locale object.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-dynarray.c b/tests/test-dynarray.c
index 0e4eeda2da..b46241698d 100644
--- a/tests/test-dynarray.c
+++ b/tests/test-dynarray.c
@@ -1,5 +1,5 @@
 /* Test of type-safe arrays that grow dynamically.
-   Copyright (C) 2021-2022 Free Software Foundation, Inc.
+   Copyright (C) 2021-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-environ.c b/tests/test-environ.c
index 6242205f09..3df1f0f68e 100644
--- a/tests/test-environ.c
+++ b/tests/test-environ.c
@@ -1,5 +1,5 @@
 /* Test of environ variable.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-erf.c b/tests/test-erf.c
index adf5987c44..0b703be6ff 100644
--- a/tests/test-erf.c
+++ b/tests/test-erf.c
@@ -1,5 +1,5 @@
 /* Test of erf() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-erfc.c b/tests/test-erfc.c
index cbfe4354b0..768b8ccc50 100644
--- a/tests/test-erfc.c
+++ b/tests/test-erfc.c
@@ -1,5 +1,5 @@
 /* Test of erfc() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-errno-c++.cc b/tests/test-errno-c++.cc
index 732992c3f1..5bea7a9438 100644
--- a/tests/test-errno-c++.cc
+++ b/tests/test-errno-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <errno.h> substitute in C++ mode.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-errno-c++2.cc b/tests/test-errno-c++2.cc
index 431a2148d7..5df948b8e1 100644
--- a/tests/test-errno-c++2.cc
+++ b/tests/test-errno-c++2.cc
@@ -1,5 +1,5 @@
 /* Test of <errno.h> substitute in C++ mode.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-errno.c b/tests/test-errno.c
index bbfd5da67f..c665e28eb7 100644
--- a/tests/test-errno.c
+++ b/tests/test-errno.c
@@ -1,5 +1,5 @@
 /* Test of <errno.h> substitute.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-exclude.c b/tests/test-exclude.c
index 7cce5e5f36..5a81cab4be 100644
--- a/tests/test-exclude.c
+++ b/tests/test-exclude.c
@@ -1,5 +1,5 @@
 /* Test suite for exclude.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    This file is part of the GNUlib Library.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-exclude1.sh b/tests/test-exclude1.sh
index 4a11c7b36d..9aca1d8970 100755
--- a/tests/test-exclude1.sh
+++ b/tests/test-exclude1.sh
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Test suite for exclude.
-# Copyright (C) 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2009-2023 Free Software Foundation, Inc.
 # This file is part of the GNUlib Library.
 #
 # This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-exclude2.sh b/tests/test-exclude2.sh
index 4cb1c6bea4..ff7ced0874 100755
--- a/tests/test-exclude2.sh
+++ b/tests/test-exclude2.sh
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Test suite for exclude.
-# Copyright (C) 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2009-2023 Free Software Foundation, Inc.
 # This file is part of the GNUlib Library.
 #
 # This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-exclude3.sh b/tests/test-exclude3.sh
index fa0268808b..97744dc880 100755
--- a/tests/test-exclude3.sh
+++ b/tests/test-exclude3.sh
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Test suite for exclude.
-# Copyright (C) 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2009-2023 Free Software Foundation, Inc.
 # This file is part of the GNUlib Library.
 #
 # This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-exclude4.sh b/tests/test-exclude4.sh
index 4d58e1163b..998dae08e0 100755
--- a/tests/test-exclude4.sh
+++ b/tests/test-exclude4.sh
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Test suite for exclude.
-# Copyright (C) 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2009-2023 Free Software Foundation, Inc.
 # This file is part of the GNUlib Library.
 #
 # This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-exclude5.sh b/tests/test-exclude5.sh
index 3f514af9d3..f386df8494 100755
--- a/tests/test-exclude5.sh
+++ b/tests/test-exclude5.sh
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Test suite for exclude.
-# Copyright (C) 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2009-2023 Free Software Foundation, Inc.
 # This file is part of the GNUlib Library.
 #
 # This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-exclude6.sh b/tests/test-exclude6.sh
index eacdcc63fe..8362b019f0 100755
--- a/tests/test-exclude6.sh
+++ b/tests/test-exclude6.sh
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Test suite for exclude.
-# Copyright (C) 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2009-2023 Free Software Foundation, Inc.
 # This file is part of the GNUlib Library.
 #
 # This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-exclude7.sh b/tests/test-exclude7.sh
index b5c975d6d2..08f67efcb9 100755
--- a/tests/test-exclude7.sh
+++ b/tests/test-exclude7.sh
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Test suite for exclude.
-# Copyright (C) 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2009-2023 Free Software Foundation, Inc.
 # This file is part of the GNUlib Library.
 #
 # This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-exclude8.sh b/tests/test-exclude8.sh
index 52536f22a1..a2e007d4c0 100755
--- a/tests/test-exclude8.sh
+++ b/tests/test-exclude8.sh
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Test suite for exclude.
-# Copyright (C) 2010-2022 Free Software Foundation, Inc.
+# Copyright (C) 2010-2023 Free Software Foundation, Inc.
 # This file is part of the GNUlib Library.
 #
 # This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-exec-child.c b/tests/test-exec-child.c
index 9f7e21d80f..3e03193b6a 100644
--- a/tests/test-exec-child.c
+++ b/tests/test-exec-child.c
@@ -1,5 +1,5 @@
 /* Callee program for the tests of the exec*() functions.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-execl-main.c b/tests/test-execl-main.c
index d67c39e95e..f55cea5afa 100644
--- a/tests/test-execl-main.c
+++ b/tests/test-execl-main.c
@@ -1,5 +1,5 @@
 /* Test of execl().
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-execl.sh b/tests/test-execl.sh
index 74ab56f452..a59626e7ab 100755
--- a/tests/test-execl.sh
+++ b/tests/test-execl.sh
@@ -2,7 +2,7 @@
 
 # Test of execl().
 #
-# Copyright (C) 2020-2022 Free Software Foundation, Inc.
+# Copyright (C) 2020-2023 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/tests/test-execle-main.c b/tests/test-execle-main.c
index 17bf809498..91e58f2afa 100644
--- a/tests/test-execle-main.c
+++ b/tests/test-execle-main.c
@@ -1,5 +1,5 @@
 /* Test of execle().
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-execle.sh b/tests/test-execle.sh
index c5a3c8b571..024aaec757 100755
--- a/tests/test-execle.sh
+++ b/tests/test-execle.sh
@@ -2,7 +2,7 @@
 
 # Test of execle().
 #
-# Copyright (C) 2020-2022 Free Software Foundation, Inc.
+# Copyright (C) 2020-2023 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/tests/test-execlp-main.c b/tests/test-execlp-main.c
index af1dcf9995..75c109152c 100644
--- a/tests/test-execlp-main.c
+++ b/tests/test-execlp-main.c
@@ -1,5 +1,5 @@
 /* Test of execlp().
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-execlp.sh b/tests/test-execlp.sh
index f1c38d0d30..53f60bb3a7 100755
--- a/tests/test-execlp.sh
+++ b/tests/test-execlp.sh
@@ -2,7 +2,7 @@
 
 # Test of execlp().
 #
-# Copyright (C) 2020-2022 Free Software Foundation, Inc.
+# Copyright (C) 2020-2023 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/tests/test-execute-child.c b/tests/test-execute-child.c
index 33ca77c62d..53d0252a7f 100644
--- a/tests/test-execute-child.c
+++ b/tests/test-execute-child.c
@@ -1,5 +1,5 @@
 /* Child program invoked by test-execute-main.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-execute-main.c b/tests/test-execute-main.c
index 0a2fe327ee..d89b34465b 100644
--- a/tests/test-execute-main.c
+++ b/tests/test-execute-main.c
@@ -1,5 +1,5 @@
 /* Test of execute.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-execute-script.c b/tests/test-execute-script.c
index fce1a13086..5a27a2fa69 100644
--- a/tests/test-execute-script.c
+++ b/tests/test-execute-script.c
@@ -1,5 +1,5 @@
 /* Test of execute.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-execv-main.c b/tests/test-execv-main.c
index fbbd757f62..605f23407f 100644
--- a/tests/test-execv-main.c
+++ b/tests/test-execv-main.c
@@ -1,5 +1,5 @@
 /* Test of execv().
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-execv.sh b/tests/test-execv.sh
index ca4a0bf87e..28c9aa3ce2 100755
--- a/tests/test-execv.sh
+++ b/tests/test-execv.sh
@@ -2,7 +2,7 @@
 
 # Test of execv().
 #
-# Copyright (C) 2020-2022 Free Software Foundation, Inc.
+# Copyright (C) 2020-2023 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/tests/test-execve-main.c b/tests/test-execve-main.c
index bfd02c9b64..72a93f7588 100644
--- a/tests/test-execve-main.c
+++ b/tests/test-execve-main.c
@@ -1,5 +1,5 @@
 /* Test of execve().
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-execve.sh b/tests/test-execve.sh
index 51b2802ad2..91f670549f 100755
--- a/tests/test-execve.sh
+++ b/tests/test-execve.sh
@@ -2,7 +2,7 @@
 
 # Test of execve().
 #
-# Copyright (C) 2020-2022 Free Software Foundation, Inc.
+# Copyright (C) 2020-2023 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/tests/test-execvp-main.c b/tests/test-execvp-main.c
index e8272aa661..bc9d94a087 100644
--- a/tests/test-execvp-main.c
+++ b/tests/test-execvp-main.c
@@ -1,5 +1,5 @@
 /* Test of execvp().
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-execvp.sh b/tests/test-execvp.sh
index b04c445afe..2b1e8a9401 100755
--- a/tests/test-execvp.sh
+++ b/tests/test-execvp.sh
@@ -2,7 +2,7 @@
 
 # Test of execvp().
 #
-# Copyright (C) 2020-2022 Free Software Foundation, Inc.
+# Copyright (C) 2020-2023 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/tests/test-execvpe-main.c b/tests/test-execvpe-main.c
index d67b726bbc..b813ea24b3 100644
--- a/tests/test-execvpe-main.c
+++ b/tests/test-execvpe-main.c
@@ -1,5 +1,5 @@
 /* Test of execvpe().
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-execvpe.sh b/tests/test-execvpe.sh
index f1afa12968..1e338f7976 100755
--- a/tests/test-execvpe.sh
+++ b/tests/test-execvpe.sh
@@ -2,7 +2,7 @@
 
 # Test of execvpe().
 #
-# Copyright (C) 2020-2022 Free Software Foundation, Inc.
+# Copyright (C) 2020-2023 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/tests/test-exp-ieee.c b/tests/test-exp-ieee.c
index e48c76b60a..942372ecd4 100644
--- a/tests/test-exp-ieee.c
+++ b/tests/test-exp-ieee.c
@@ -1,5 +1,5 @@
 /* Test of exp() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-exp-ieee.h b/tests/test-exp-ieee.h
index 6ea04bbf93..39c7a95293 100644
--- a/tests/test-exp-ieee.h
+++ b/tests/test-exp-ieee.h
@@ -1,5 +1,5 @@
 /* Test of exp*() function family.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-exp.c b/tests/test-exp.c
index f505f68a66..a0a626e2f6 100644
--- a/tests/test-exp.c
+++ b/tests/test-exp.c
@@ -1,5 +1,5 @@
 /* Test of exp() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-exp.h b/tests/test-exp.h
index fea7ce7a6c..e018f4e1e3 100644
--- a/tests/test-exp.h
+++ b/tests/test-exp.h
@@ -1,5 +1,5 @@
 /* Test of exp*() function family.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-exp2-ieee.c b/tests/test-exp2-ieee.c
index 9690c29284..2e1247d343 100644
--- a/tests/test-exp2-ieee.c
+++ b/tests/test-exp2-ieee.c
@@ -1,5 +1,5 @@
 /* Test of exp2() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-exp2-ieee.h b/tests/test-exp2-ieee.h
index ba15ff0b4d..e57f2d1696 100644
--- a/tests/test-exp2-ieee.h
+++ b/tests/test-exp2-ieee.h
@@ -1,5 +1,5 @@
 /* Test of exp2*() function family.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-exp2.c b/tests/test-exp2.c
index 61d81d4244..3a7ab1a80d 100644
--- a/tests/test-exp2.c
+++ b/tests/test-exp2.c
@@ -1,5 +1,5 @@
 /* Test of exp2() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-exp2.h b/tests/test-exp2.h
index e927bfb667..82347ca923 100644
--- a/tests/test-exp2.h
+++ b/tests/test-exp2.h
@@ -1,5 +1,5 @@
 /* Test of exp2*() function family.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-exp2f-ieee.c b/tests/test-exp2f-ieee.c
index 5ee302831a..2561abfa90 100644
--- a/tests/test-exp2f-ieee.c
+++ b/tests/test-exp2f-ieee.c
@@ -1,5 +1,5 @@
 /* Test of exp2f() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-exp2f.c b/tests/test-exp2f.c
index e9008976ca..a6483e7738 100644
--- a/tests/test-exp2f.c
+++ b/tests/test-exp2f.c
@@ -1,5 +1,5 @@
 /* Test of exp2f() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-exp2l-ieee.c b/tests/test-exp2l-ieee.c
index b6eec7d74e..0531c15944 100644
--- a/tests/test-exp2l-ieee.c
+++ b/tests/test-exp2l-ieee.c
@@ -1,5 +1,5 @@
 /* Test of exp2l() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-exp2l.c b/tests/test-exp2l.c
index 92b9ee05dc..c9d9beacbb 100644
--- a/tests/test-exp2l.c
+++ b/tests/test-exp2l.c
@@ -1,5 +1,5 @@
 /* Test of exp2l() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-expf-ieee.c b/tests/test-expf-ieee.c
index ad0015422e..c7b9cac25d 100644
--- a/tests/test-expf-ieee.c
+++ b/tests/test-expf-ieee.c
@@ -1,5 +1,5 @@
 /* Test of expf() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-expf.c b/tests/test-expf.c
index 78c0bf33bb..20533cbe89 100644
--- a/tests/test-expf.c
+++ b/tests/test-expf.c
@@ -1,5 +1,5 @@
 /* Test of expf() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-expl-ieee.c b/tests/test-expl-ieee.c
index aa2379058c..f201a40989 100644
--- a/tests/test-expl-ieee.c
+++ b/tests/test-expl-ieee.c
@@ -1,5 +1,5 @@
 /* Test of expl() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-expl.c b/tests/test-expl.c
index 154034d20c..b3c3634d54 100644
--- a/tests/test-expl.c
+++ b/tests/test-expl.c
@@ -1,5 +1,5 @@
 /* Test of expl() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-explicit_bzero.c b/tests/test-explicit_bzero.c
index 42d9d3cb60..9754750e13 100644
--- a/tests/test-explicit_bzero.c
+++ b/tests/test-explicit_bzero.c
@@ -1,5 +1,5 @@
 /* Test of explicit_bzero() function.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-expm1-ieee.c b/tests/test-expm1-ieee.c
index 2ca86bcdaf..da5847add3 100644
--- a/tests/test-expm1-ieee.c
+++ b/tests/test-expm1-ieee.c
@@ -1,5 +1,5 @@
 /* Test of expm1() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-expm1-ieee.h b/tests/test-expm1-ieee.h
index e387900c52..b83d5ce346 100644
--- a/tests/test-expm1-ieee.h
+++ b/tests/test-expm1-ieee.h
@@ -1,5 +1,5 @@
 /* Test of expm1*() function family.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-expm1.c b/tests/test-expm1.c
index ad721b7615..4fa80de612 100644
--- a/tests/test-expm1.c
+++ b/tests/test-expm1.c
@@ -1,5 +1,5 @@
 /* Test of expm1() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-expm1.h b/tests/test-expm1.h
index e543e45516..8d2a9b9398 100644
--- a/tests/test-expm1.h
+++ b/tests/test-expm1.h
@@ -1,5 +1,5 @@
 /* Test of expm1*() function family.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-expm1f-ieee.c b/tests/test-expm1f-ieee.c
index aed68156ff..a16401ea2e 100644
--- a/tests/test-expm1f-ieee.c
+++ b/tests/test-expm1f-ieee.c
@@ -1,5 +1,5 @@
 /* Test of expm1f() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-expm1f.c b/tests/test-expm1f.c
index d3c27fc663..2ec0cb6d1a 100644
--- a/tests/test-expm1f.c
+++ b/tests/test-expm1f.c
@@ -1,5 +1,5 @@
 /* Test of expm1f() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-expm1l-ieee.c b/tests/test-expm1l-ieee.c
index bb2589e440..916c8991ec 100644
--- a/tests/test-expm1l-ieee.c
+++ b/tests/test-expm1l-ieee.c
@@ -1,5 +1,5 @@
 /* Test of expm1l() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-expm1l.c b/tests/test-expm1l.c
index b829f0ada2..d09c38e69e 100644
--- a/tests/test-expm1l.c
+++ b/tests/test-expm1l.c
@@ -1,5 +1,5 @@
 /* Test of expm1l() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fabs-ieee.c b/tests/test-fabs-ieee.c
index aedc0a96c5..a3025f37ba 100644
--- a/tests/test-fabs-ieee.c
+++ b/tests/test-fabs-ieee.c
@@ -1,5 +1,5 @@
 /* Test of fabs() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fabs-ieee.h b/tests/test-fabs-ieee.h
index 21ffa9afc6..82c72fcd44 100644
--- a/tests/test-fabs-ieee.h
+++ b/tests/test-fabs-ieee.h
@@ -1,5 +1,5 @@
 /* Test of ldexp*() function family.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fabs.c b/tests/test-fabs.c
index 4460138a81..c25a9e7d14 100644
--- a/tests/test-fabs.c
+++ b/tests/test-fabs.c
@@ -1,5 +1,5 @@
 /* Test of fabs() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fabs.h b/tests/test-fabs.h
index 93c6a6cbc0..6008828256 100644
--- a/tests/test-fabs.h
+++ b/tests/test-fabs.h
@@ -1,5 +1,5 @@
 /* Test of fabs*() function family.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fabsf-ieee.c b/tests/test-fabsf-ieee.c
index b0e7f7cb4b..6bece63e01 100644
--- a/tests/test-fabsf-ieee.c
+++ b/tests/test-fabsf-ieee.c
@@ -1,5 +1,5 @@
 /* Test of fabsf() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fabsf.c b/tests/test-fabsf.c
index 22d5386d0a..8e4ffd4514 100644
--- a/tests/test-fabsf.c
+++ b/tests/test-fabsf.c
@@ -1,5 +1,5 @@
 /* Test of fabsf() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fabsl-ieee.c b/tests/test-fabsl-ieee.c
index 1304d3c9cf..436d00118e 100644
--- a/tests/test-fabsl-ieee.c
+++ b/tests/test-fabsl-ieee.c
@@ -1,5 +1,5 @@
 /* Test of fabsl() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fabsl.c b/tests/test-fabsl.c
index b87df65848..d14acbfb09 100644
--- a/tests/test-fabsl.c
+++ b/tests/test-fabsl.c
@@ -1,5 +1,5 @@
 /* Test of fabsl() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-faccessat.c b/tests/test-faccessat.c
index 218a7398a9..5f6ecd95d1 100644
--- a/tests/test-faccessat.c
+++ b/tests/test-faccessat.c
@@ -1,5 +1,5 @@
 /* Test checking user's permissions for a file.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fbufmode.c b/tests/test-fbufmode.c
index 0dd0050cc9..4ca2498d9b 100644
--- a/tests/test-fbufmode.c
+++ b/tests/test-fbufmode.c
@@ -1,5 +1,5 @@
 /* Test of fbufmode() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fchdir.c b/tests/test-fchdir.c
index 5eee2ab085..7925877109 100644
--- a/tests/test-fchdir.c
+++ b/tests/test-fchdir.c
@@ -1,5 +1,5 @@
 /* Test changing to a directory named by a file descriptor.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fchmod.c b/tests/test-fchmod.c
index 91e5c3f280..dd04242082 100644
--- a/tests/test-fchmod.c
+++ b/tests/test-fchmod.c
@@ -1,5 +1,5 @@
 /* Test changing the protections of a file.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fchmodat.c b/tests/test-fchmodat.c
index 3608ecdaac..f7e8797b77 100644
--- a/tests/test-fchmodat.c
+++ b/tests/test-fchmodat.c
@@ -1,5 +1,5 @@
 /* Test changing the protections of a file relative to an open directory.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fchown.c b/tests/test-fchown.c
index debfa7dc44..f259eac95a 100644
--- a/tests/test-fchown.c
+++ b/tests/test-fchown.c
@@ -1,5 +1,5 @@
 /* Tests of fchown.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fchownat.c b/tests/test-fchownat.c
index 2c8cace801..d1061744bd 100644
--- a/tests/test-fchownat.c
+++ b/tests/test-fchownat.c
@@ -1,5 +1,5 @@
 /* Tests of fchownat.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fclose.c b/tests/test-fclose.c
index b31261740c..5eda8fa672 100644
--- a/tests/test-fclose.c
+++ b/tests/test-fclose.c
@@ -1,5 +1,5 @@
 /* Test of fclose module.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fcntl-h-c++.cc b/tests/test-fcntl-h-c++.cc
index cc872e925d..88d9ed1790 100644
--- a/tests/test-fcntl-h-c++.cc
+++ b/tests/test-fcntl-h-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <fcntl.h> substitute in C++ mode.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fcntl-h.c b/tests/test-fcntl-h.c
index 150197928d..c255213203 100644
--- a/tests/test-fcntl-h.c
+++ b/tests/test-fcntl-h.c
@@ -1,5 +1,5 @@
 /* Test of <fcntl.h> substitute.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fcntl-safer.c b/tests/test-fcntl-safer.c
index ef4ab75b0a..c1b2acf582 100644
--- a/tests/test-fcntl-safer.c
+++ b/tests/test-fcntl-safer.c
@@ -1,5 +1,5 @@
 /* Test of opening a file descriptor.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fcntl.c b/tests/test-fcntl.c
index 77ca347972..4206de991a 100644
--- a/tests/test-fcntl.c
+++ b/tests/test-fcntl.c
@@ -1,5 +1,5 @@
 /* Test of fcntl(2).
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fdatasync.c b/tests/test-fdatasync.c
index bb97856ea6..a20df22c61 100644
--- a/tests/test-fdatasync.c
+++ b/tests/test-fdatasync.c
@@ -1,5 +1,5 @@
 /* Test of fdatasync() function.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fdopen.c b/tests/test-fdopen.c
index d67beeddca..113bde0c83 100644
--- a/tests/test-fdopen.c
+++ b/tests/test-fdopen.c
@@ -1,5 +1,5 @@
 /* Test opening a stream with a file descriptor.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fdopendir.c b/tests/test-fdopendir.c
index 89079ead8a..41b15f3e77 100644
--- a/tests/test-fdopendir.c
+++ b/tests/test-fdopendir.c
@@ -1,5 +1,5 @@
 /* Test opening a directory stream from a file descriptor.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fdutimensat.c b/tests/test-fdutimensat.c
index 2a2cd2ad90..ce2fe5db9b 100644
--- a/tests/test-fdutimensat.c
+++ b/tests/test-fdutimensat.c
@@ -1,5 +1,5 @@
 /* Tests of fdutimensat.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fflush.c b/tests/test-fflush.c
index 98ec5019fa..c996b18c25 100644
--- a/tests/test-fflush.c
+++ b/tests/test-fflush.c
@@ -1,5 +1,5 @@
 /* Test of POSIX compatible fflush() function.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fflush2.c b/tests/test-fflush2.c
index ec648d6892..9ffa360349 100644
--- a/tests/test-fflush2.c
+++ b/tests/test-fflush2.c
@@ -1,5 +1,5 @@
 /* Test of POSIX compatible fflush() function.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-ffs.c b/tests/test-ffs.c
index 808833a9d1..6fa5d0ca18 100644
--- a/tests/test-ffs.c
+++ b/tests/test-ffs.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2011-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2011-2023 Free Software Foundation, Inc.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/tests/test-ffsl.c b/tests/test-ffsl.c
index 93abccbd5e..e052294db2 100644
--- a/tests/test-ffsl.c
+++ b/tests/test-ffsl.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2011-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2011-2023 Free Software Foundation, Inc.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/tests/test-ffsll.c b/tests/test-ffsll.c
index 08d3c63785..e704f2051c 100644
--- a/tests/test-ffsll.c
+++ b/tests/test-ffsll.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2011-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2011-2023 Free Software Foundation, Inc.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fgetc.c b/tests/test-fgetc.c
index 2b289dc1d0..59ab4098d4 100644
--- a/tests/test-fgetc.c
+++ b/tests/test-fgetc.c
@@ -1,5 +1,5 @@
 /* Test of fgetc() function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-file-has-acl.c b/tests/test-file-has-acl.c
index 3da1c68167..79e45cfcb4 100644
--- a/tests/test-file-has-acl.c
+++ b/tests/test-file-has-acl.c
@@ -1,5 +1,5 @@
 /* Test for presence of ACL.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-filenamecat.c b/tests/test-filenamecat.c
index c5e4275cf9..8cc5f9469d 100644
--- a/tests/test-filenamecat.c
+++ b/tests/test-filenamecat.c
@@ -1,6 +1,6 @@
 /* Test of concatenation of two arbitrary file names.
 
-   Copyright (C) 1996-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 1996-2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-filevercmp.c b/tests/test-filevercmp.c
index 998250990d..8014ceb2b2 100644
--- a/tests/test-filevercmp.c
+++ b/tests/test-filevercmp.c
@@ -1,5 +1,5 @@
 /* Test of filevercmp() function.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-float-c++.cc b/tests/test-float-c++.cc
index f306d1c51b..effa518bb8 100644
--- a/tests/test-float-c++.cc
+++ b/tests/test-float-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <float.h> substitute in C++ mode.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-float-c++2.cc b/tests/test-float-c++2.cc
index 3e7387e2b6..37984927b2 100644
--- a/tests/test-float-c++2.cc
+++ b/tests/test-float-c++2.cc
@@ -1,5 +1,5 @@
 /* Test of <float.h> substitute in C++ mode.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-float.c b/tests/test-float.c
index 986f7da8e5..315c3d6610 100644
--- a/tests/test-float.c
+++ b/tests/test-float.c
@@ -1,5 +1,5 @@
 /* Test of <float.h> substitute.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-flock.c b/tests/test-flock.c
index 9dad7be216..caf71b799f 100644
--- a/tests/test-flock.c
+++ b/tests/test-flock.c
@@ -1,5 +1,5 @@
 /* Test of flock() function.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-floor-ieee.c b/tests/test-floor-ieee.c
index 8a5cb230bc..00c702c958 100644
--- a/tests/test-floor-ieee.c
+++ b/tests/test-floor-ieee.c
@@ -1,5 +1,5 @@
 /* Test of rounding towards negative infinity.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-floor1.c b/tests/test-floor1.c
index be320e9bbc..6edf66618f 100644
--- a/tests/test-floor1.c
+++ b/tests/test-floor1.c
@@ -1,5 +1,5 @@
 /* Test of rounding towards negative infinity.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-floor2.c b/tests/test-floor2.c
index fc6832e1d0..a0a9197682 100644
--- a/tests/test-floor2.c
+++ b/tests/test-floor2.c
@@ -1,5 +1,5 @@
 /* Test of rounding towards negative infinity.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-floorf-ieee.c b/tests/test-floorf-ieee.c
index 647c135685..32ceb5b7b1 100644
--- a/tests/test-floorf-ieee.c
+++ b/tests/test-floorf-ieee.c
@@ -1,5 +1,5 @@
 /* Test of rounding towards negative infinity.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-floorf1.c b/tests/test-floorf1.c
index 7331368d79..b2787f6ff3 100644
--- a/tests/test-floorf1.c
+++ b/tests/test-floorf1.c
@@ -1,5 +1,5 @@
 /* Test of rounding towards negative infinity.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-floorf2.c b/tests/test-floorf2.c
index 9aaabf5b12..56746580be 100644
--- a/tests/test-floorf2.c
+++ b/tests/test-floorf2.c
@@ -1,5 +1,5 @@
 /* Test of rounding towards negative infinity.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-floorl-ieee.c b/tests/test-floorl-ieee.c
index 8c059d7c92..81eb3868ec 100644
--- a/tests/test-floorl-ieee.c
+++ b/tests/test-floorl-ieee.c
@@ -1,5 +1,5 @@
 /* Test of rounding towards negative infinity.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-floorl.c b/tests/test-floorl.c
index e52e95f72a..8b8b462cbe 100644
--- a/tests/test-floorl.c
+++ b/tests/test-floorl.c
@@ -1,5 +1,5 @@
 /* Test of rounding towards negative infinity.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fma-ieee.c b/tests/test-fma-ieee.c
index 33d8a7ef40..166fd92cd9 100644
--- a/tests/test-fma-ieee.c
+++ b/tests/test-fma-ieee.c
@@ -1,5 +1,5 @@
 /* Test of fma() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fma-ieee.h b/tests/test-fma-ieee.h
index fd1a1e9763..0e06e8cffb 100644
--- a/tests/test-fma-ieee.h
+++ b/tests/test-fma-ieee.h
@@ -1,5 +1,5 @@
 /* Test of ldexp*() function family.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fma1.c b/tests/test-fma1.c
index 8b9d367e0e..52b10f539b 100644
--- a/tests/test-fma1.c
+++ b/tests/test-fma1.c
@@ -1,5 +1,5 @@
 /* Test of fma().
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fma1.h b/tests/test-fma1.h
index 29ffc64962..d19ec3d591 100644
--- a/tests/test-fma1.h
+++ b/tests/test-fma1.h
@@ -1,5 +1,5 @@
 /* Test of fused multiply-add.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fma2.c b/tests/test-fma2.c
index cc2e50c477..5bcbff7158 100644
--- a/tests/test-fma2.c
+++ b/tests/test-fma2.c
@@ -1,5 +1,5 @@
 /* Test of fma().
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fma2.h b/tests/test-fma2.h
index 9172306584..0d858706de 100644
--- a/tests/test-fma2.h
+++ b/tests/test-fma2.h
@@ -1,5 +1,5 @@
 /* Test of fused multiply-add.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fmaf-ieee.c b/tests/test-fmaf-ieee.c
index 321eb141e2..93d29053c8 100644
--- a/tests/test-fmaf-ieee.c
+++ b/tests/test-fmaf-ieee.c
@@ -1,5 +1,5 @@
 /* Test of fmaf() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fmaf1.c b/tests/test-fmaf1.c
index 82cd1efc59..1fc4aa7ebe 100644
--- a/tests/test-fmaf1.c
+++ b/tests/test-fmaf1.c
@@ -1,5 +1,5 @@
 /* Test of fmaf().
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fmaf2.c b/tests/test-fmaf2.c
index 07696732a6..1131d8f3c4 100644
--- a/tests/test-fmaf2.c
+++ b/tests/test-fmaf2.c
@@ -1,5 +1,5 @@
 /* Test of fmaf().
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fmal-ieee.c b/tests/test-fmal-ieee.c
index 01bfb44202..e0f2aa526b 100644
--- a/tests/test-fmal-ieee.c
+++ b/tests/test-fmal-ieee.c
@@ -1,5 +1,5 @@
 /* Test of fmal() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fmal1.c b/tests/test-fmal1.c
index f9f33c6e5f..e445160fae 100644
--- a/tests/test-fmal1.c
+++ b/tests/test-fmal1.c
@@ -1,5 +1,5 @@
 /* Test of fmal().
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fmal2.c b/tests/test-fmal2.c
index cd79dc8be0..2872dd5e9b 100644
--- a/tests/test-fmal2.c
+++ b/tests/test-fmal2.c
@@ -1,5 +1,5 @@
 /* Test of fmal().
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fmod-ieee.c b/tests/test-fmod-ieee.c
index 1f339a3852..56cdd01b60 100644
--- a/tests/test-fmod-ieee.c
+++ b/tests/test-fmod-ieee.c
@@ -1,5 +1,5 @@
 /* Test of fmod() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fmod-ieee.h b/tests/test-fmod-ieee.h
index 6fe74d1479..d0575f871a 100644
--- a/tests/test-fmod-ieee.h
+++ b/tests/test-fmod-ieee.h
@@ -1,5 +1,5 @@
 /* Test of fmod*() function family.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fmod.c b/tests/test-fmod.c
index 533e5a5643..a453fb9afe 100644
--- a/tests/test-fmod.c
+++ b/tests/test-fmod.c
@@ -1,5 +1,5 @@
 /* Test of fmod() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fmod.h b/tests/test-fmod.h
index 5e16027584..b081f0c101 100644
--- a/tests/test-fmod.h
+++ b/tests/test-fmod.h
@@ -1,5 +1,5 @@
 /* Test of fmod*() function family.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fmodf-ieee.c b/tests/test-fmodf-ieee.c
index c556317e7c..207867eeb5 100644
--- a/tests/test-fmodf-ieee.c
+++ b/tests/test-fmodf-ieee.c
@@ -1,5 +1,5 @@
 /* Test of fmodf() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fmodf.c b/tests/test-fmodf.c
index 7da23cc306..e57c81002e 100644
--- a/tests/test-fmodf.c
+++ b/tests/test-fmodf.c
@@ -1,5 +1,5 @@
 /* Test of fmodf() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fmodl-ieee.c b/tests/test-fmodl-ieee.c
index d2ecabc991..ddea1c2213 100644
--- a/tests/test-fmodl-ieee.c
+++ b/tests/test-fmodl-ieee.c
@@ -1,5 +1,5 @@
 /* Test of fmodl() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fmodl.c b/tests/test-fmodl.c
index 45bae6f621..07c199a51f 100644
--- a/tests/test-fmodl.c
+++ b/tests/test-fmodl.c
@@ -1,5 +1,5 @@
 /* Test of fmodl() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fnmatch-h-c++.cc b/tests/test-fnmatch-h-c++.cc
index 816b6db4e9..481845fa35 100644
--- a/tests/test-fnmatch-h-c++.cc
+++ b/tests/test-fnmatch-h-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <fnmatch.h> substitute in C++ mode.
-   Copyright (C) 2018-2022 Free Software Foundation, Inc.
+   Copyright (C) 2018-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fnmatch-h.c b/tests/test-fnmatch-h.c
index b72c0fc464..e26b640b4f 100644
--- a/tests/test-fnmatch-h.c
+++ b/tests/test-fnmatch-h.c
@@ -1,5 +1,5 @@
 /* Test of <fnmatch.h> substitute.
-   Copyright (C) 2018-2022 Free Software Foundation, Inc.
+   Copyright (C) 2018-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fnmatch.c b/tests/test-fnmatch.c
index 07ae5eb8ce..3777aa2790 100644
--- a/tests/test-fnmatch.c
+++ b/tests/test-fnmatch.c
@@ -1,5 +1,5 @@
 /* Test of fnmatch string matching function.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fopen-gnu.c b/tests/test-fopen-gnu.c
index bba2decc57..1fa8824c41 100644
--- a/tests/test-fopen-gnu.c
+++ b/tests/test-fopen-gnu.c
@@ -1,5 +1,5 @@
 /* Test of opening a file stream.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fopen-safer.c b/tests/test-fopen-safer.c
index 1e0ec37476..b2120f676b 100644
--- a/tests/test-fopen-safer.c
+++ b/tests/test-fopen-safer.c
@@ -1,5 +1,5 @@
 /* Test of opening a file stream.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fopen.c b/tests/test-fopen.c
index 5020ed080b..17984e0555 100644
--- a/tests/test-fopen.c
+++ b/tests/test-fopen.c
@@ -1,5 +1,5 @@
 /* Test of opening a file stream.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fopen.h b/tests/test-fopen.h
index 4b66ec7009..a03c931816 100644
--- a/tests/test-fopen.h
+++ b/tests/test-fopen.h
@@ -1,5 +1,5 @@
 /* Test of opening a file stream.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-forkpty.c b/tests/test-forkpty.c
index 8cf7c8f9bd..a941aa42be 100644
--- a/tests/test-forkpty.c
+++ b/tests/test-forkpty.c
@@ -1,5 +1,5 @@
 /* Test of pty.h and forkpty function.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fpending.c b/tests/test-fpending.c
index 405fb82f24..3a5d6894cd 100644
--- a/tests/test-fpending.c
+++ b/tests/test-fpending.c
@@ -1,6 +1,6 @@
 /* Ensure that __fpending works.
 
-   Copyright (C) 2004, 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2004, 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fprintf-posix.c b/tests/test-fprintf-posix.c
index 8f0fadb826..bdc6ccbb4e 100644
--- a/tests/test-fprintf-posix.c
+++ b/tests/test-fprintf-posix.c
@@ -1,5 +1,5 @@
 /* Test of POSIX compatible fprintf() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fprintf-posix.h b/tests/test-fprintf-posix.h
index d9b355ed46..e70ed0904e 100644
--- a/tests/test-fprintf-posix.h
+++ b/tests/test-fprintf-posix.h
@@ -1,5 +1,5 @@
 /* Test of POSIX compatible vsprintf() and sprintf() functions.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fprintf-posix2.c b/tests/test-fprintf-posix2.c
index 7d6b07995c..9140969f56 100644
--- a/tests/test-fprintf-posix2.c
+++ b/tests/test-fprintf-posix2.c
@@ -1,5 +1,5 @@
 /* Test of POSIX compatible fprintf() function.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fprintf-posix3.c b/tests/test-fprintf-posix3.c
index 648a85e076..330642d66a 100644
--- a/tests/test-fprintf-posix3.c
+++ b/tests/test-fprintf-posix3.c
@@ -1,5 +1,5 @@
 /* Test of POSIX compatible fprintf() function.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fpurge.c b/tests/test-fpurge.c
index 381b8a1c80..386bbe9fa2 100644
--- a/tests/test-fpurge.c
+++ b/tests/test-fpurge.c
@@ -1,5 +1,5 @@
 /* Test of fpurge() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fputc.c b/tests/test-fputc.c
index 34f4cf538e..2f0f1a33a9 100644
--- a/tests/test-fputc.c
+++ b/tests/test-fputc.c
@@ -1,5 +1,5 @@
 /* Test of fputc() function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fread.c b/tests/test-fread.c
index e85ce052eb..54e9d631ae 100644
--- a/tests/test-fread.c
+++ b/tests/test-fread.c
@@ -1,5 +1,5 @@
 /* Test of fread() function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-freadable.c b/tests/test-freadable.c
index 264da91e0c..d66cc35e01 100644
--- a/tests/test-freadable.c
+++ b/tests/test-freadable.c
@@ -1,5 +1,5 @@
 /* Test of freadable() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-freadahead.c b/tests/test-freadahead.c
index 6193a08445..33adf1ab06 100644
--- a/tests/test-freadahead.c
+++ b/tests/test-freadahead.c
@@ -1,5 +1,5 @@
 /* Test of freadahead() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-freading.c b/tests/test-freading.c
index c06ccf9fe7..f371b91514 100644
--- a/tests/test-freading.c
+++ b/tests/test-freading.c
@@ -1,5 +1,5 @@
 /* Test of freading() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-freadptr.c b/tests/test-freadptr.c
index 3d8f29ed91..6ffbba4398 100644
--- a/tests/test-freadptr.c
+++ b/tests/test-freadptr.c
@@ -1,5 +1,5 @@
 /* Test of freadptr() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-freadptr2.c b/tests/test-freadptr2.c
index 36f00dd887..c4b74c856b 100644
--- a/tests/test-freadptr2.c
+++ b/tests/test-freadptr2.c
@@ -1,5 +1,5 @@
 /* Test of freadptr() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-freadseek.c b/tests/test-freadseek.c
index efe0346bc5..69e203ee1a 100644
--- a/tests/test-freadseek.c
+++ b/tests/test-freadseek.c
@@ -1,5 +1,5 @@
 /* Test of freadseek() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-free.c b/tests/test-free.c
index 9248712b1b..c530e861e2 100644
--- a/tests/test-free.c
+++ b/tests/test-free.c
@@ -1,5 +1,5 @@
 /* Test of free() function.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-freopen-safer.c b/tests/test-freopen-safer.c
index 14d585381e..958fc8917a 100644
--- a/tests/test-freopen-safer.c
+++ b/tests/test-freopen-safer.c
@@ -1,5 +1,5 @@
 /* Test of reopening a stream.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-freopen.c b/tests/test-freopen.c
index 1ac4417252..11efa5f5f5 100644
--- a/tests/test-freopen.c
+++ b/tests/test-freopen.c
@@ -1,5 +1,5 @@
 /* Test of opening a file stream.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-frexp-ieee.c b/tests/test-frexp-ieee.c
index 94b724c7e0..d44acecdd9 100644
--- a/tests/test-frexp-ieee.c
+++ b/tests/test-frexp-ieee.c
@@ -1,5 +1,5 @@
 /* Test of splitting a double into fraction and mantissa.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-frexp-ieee.h b/tests/test-frexp-ieee.h
index 6932c404d8..2b2be7cff3 100644
--- a/tests/test-frexp-ieee.h
+++ b/tests/test-frexp-ieee.h
@@ -1,5 +1,5 @@
 /* Test of splitting a double into fraction and mantissa.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-frexp.c b/tests/test-frexp.c
index db7d207993..b6db44f000 100644
--- a/tests/test-frexp.c
+++ b/tests/test-frexp.c
@@ -1,5 +1,5 @@
 /* Test of splitting a double into fraction and mantissa.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-frexp.h b/tests/test-frexp.h
index cdc6ea3ec1..ead73d7591 100644
--- a/tests/test-frexp.h
+++ b/tests/test-frexp.h
@@ -1,5 +1,5 @@
 /* Test of splitting a double into fraction and mantissa.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-frexpf-ieee.c b/tests/test-frexpf-ieee.c
index 011af6ca7a..a0dc933a07 100644
--- a/tests/test-frexpf-ieee.c
+++ b/tests/test-frexpf-ieee.c
@@ -1,5 +1,5 @@
 /* Test of splitting a double into fraction and mantissa.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-frexpf.c b/tests/test-frexpf.c
index 6f18d36228..4f722d668c 100644
--- a/tests/test-frexpf.c
+++ b/tests/test-frexpf.c
@@ -1,5 +1,5 @@
 /* Test of splitting a float into fraction and mantissa.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-frexpl-ieee.c b/tests/test-frexpl-ieee.c
index ffa5035147..8d687391d3 100644
--- a/tests/test-frexpl-ieee.c
+++ b/tests/test-frexpl-ieee.c
@@ -1,5 +1,5 @@
 /* Test of splitting a double into fraction and mantissa.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-frexpl.c b/tests/test-frexpl.c
index d469234d3e..b12bc3331e 100644
--- a/tests/test-frexpl.c
+++ b/tests/test-frexpl.c
@@ -1,5 +1,5 @@
 /* Test of splitting a 'long double' into fraction and mantissa.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fseek.c b/tests/test-fseek.c
index 3d0c4d6e21..161a53eaf3 100644
--- a/tests/test-fseek.c
+++ b/tests/test-fseek.c
@@ -1,5 +1,5 @@
 /* Test of fseek() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fseeko.c b/tests/test-fseeko.c
index 7bf61151f4..e2908c01bc 100644
--- a/tests/test-fseeko.c
+++ b/tests/test-fseeko.c
@@ -1,5 +1,5 @@
 /* Test of fseeko() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fseeko3.c b/tests/test-fseeko3.c
index 36364d74d3..a5e0b2a532 100644
--- a/tests/test-fseeko3.c
+++ b/tests/test-fseeko3.c
@@ -1,5 +1,5 @@
 /* Test of fseeko() function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fseeko4.c b/tests/test-fseeko4.c
index 9607f46be7..f509702b3e 100644
--- a/tests/test-fseeko4.c
+++ b/tests/test-fseeko4.c
@@ -1,5 +1,5 @@
 /* Test of fseeko() function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fseterr.c b/tests/test-fseterr.c
index de28326d7c..b3d7dcb463 100644
--- a/tests/test-fseterr.c
+++ b/tests/test-fseterr.c
@@ -1,5 +1,5 @@
 /* Test setting the error indicator of a stream.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fstat.c b/tests/test-fstat.c
index f2cb2137ce..59c2dc4d1a 100644
--- a/tests/test-fstat.c
+++ b/tests/test-fstat.c
@@ -1,5 +1,5 @@
 /* Tests of fstat() function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fstatat.c b/tests/test-fstatat.c
index a534fc103c..fe8a694076 100644
--- a/tests/test-fstatat.c
+++ b/tests/test-fstatat.c
@@ -1,5 +1,5 @@
 /* Tests of fstatat.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fstrcmp.c b/tests/test-fstrcmp.c
index a46b106f01..ba8c57915a 100644
--- a/tests/test-fstrcmp.c
+++ b/tests/test-fstrcmp.c
@@ -1,5 +1,5 @@
 /* Test of fuzzy string comparison.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fsync.c b/tests/test-fsync.c
index f0e3a9520e..b7ab2504cd 100644
--- a/tests/test-fsync.c
+++ b/tests/test-fsync.c
@@ -1,5 +1,5 @@
 /* Test of fsync() function.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-ftell.c b/tests/test-ftell.c
index 632b4f41fa..191a6af5ed 100644
--- a/tests/test-ftell.c
+++ b/tests/test-ftell.c
@@ -1,5 +1,5 @@
 /* Test of ftell() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-ftell3.c b/tests/test-ftell3.c
index 29aadedf50..bb4b7b2fcb 100644
--- a/tests/test-ftell3.c
+++ b/tests/test-ftell3.c
@@ -1,5 +1,5 @@
 /* Test of ftell() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-ftello.c b/tests/test-ftello.c
index a1b4f9b653..d8b4ffc4c8 100644
--- a/tests/test-ftello.c
+++ b/tests/test-ftello.c
@@ -1,5 +1,5 @@
 /* Test of ftello() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-ftello3.c b/tests/test-ftello3.c
index 88904050b8..3542775ce1 100644
--- a/tests/test-ftello3.c
+++ b/tests/test-ftello3.c
@@ -1,5 +1,5 @@
 /* Test of ftello() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-ftello4.c b/tests/test-ftello4.c
index 7f66553ceb..b1ff8268f6 100644
--- a/tests/test-ftello4.c
+++ b/tests/test-ftello4.c
@@ -1,5 +1,5 @@
 /* Test of ftello() function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-ftruncate.c b/tests/test-ftruncate.c
index 64e1152a70..bcd63932fa 100644
--- a/tests/test-ftruncate.c
+++ b/tests/test-ftruncate.c
@@ -1,5 +1,5 @@
 /* Test truncating a file.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fts.c b/tests/test-fts.c
index 177b5216f1..026a231310 100644
--- a/tests/test-fts.c
+++ b/tests/test-fts.c
@@ -1,5 +1,5 @@
 /* Test the fts function.
-   Copyright 2017-2022 Free Software Foundation, Inc.
+   Copyright 2017-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-func.c b/tests/test-func.c
index b9a2b858a3..65ef14ccf1 100644
--- a/tests/test-func.c
+++ b/tests/test-func.c
@@ -1,5 +1,5 @@
 /* Test whether __func__ is available
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-futimens.c b/tests/test-futimens.c
index ac009eba42..54ffd703c8 100644
--- a/tests/test-futimens.c
+++ b/tests/test-futimens.c
@@ -1,5 +1,5 @@
 /* Tests of futimens.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-futimens.h b/tests/test-futimens.h
index c817c2835e..1ee16985a8 100644
--- a/tests/test-futimens.h
+++ b/tests/test-futimens.h
@@ -1,5 +1,5 @@
 /* Test of file timestamp modification functions.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fwritable.c b/tests/test-fwritable.c
index be0d2ee62d..1e564427f0 100644
--- a/tests/test-fwritable.c
+++ b/tests/test-fwritable.c
@@ -1,5 +1,5 @@
 /* Test of fwritable() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fwrite.c b/tests/test-fwrite.c
index d362c40b06..07f8b73e03 100644
--- a/tests/test-fwrite.c
+++ b/tests/test-fwrite.c
@@ -1,5 +1,5 @@
 /* Test of fwrite() function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-fwriting.c b/tests/test-fwriting.c
index 58cc7b0fe8..b79fbe6d58 100644
--- a/tests/test-fwriting.c
+++ b/tests/test-fwriting.c
@@ -1,5 +1,5 @@
 /* Test of fwriting() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-gc-arcfour.c b/tests/test-gc-arcfour.c
index a667966534..02336ec3c8 100644
--- a/tests/test-gc-arcfour.c
+++ b/tests/test-gc-arcfour.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2005, 2010-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2005, 2010-2023 Free Software Foundation, Inc.
  * Written by Simon Josefsson
  *
  * This program is free software; you can redistribute it and/or modify
diff --git a/tests/test-gc-arctwo.c b/tests/test-gc-arctwo.c
index a86362f99a..67c089afb3 100644
--- a/tests/test-gc-arctwo.c
+++ b/tests/test-gc-arctwo.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2005, 2010-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2005, 2010-2023 Free Software Foundation, Inc.
  * Written by Simon Josefsson
  *
  * This program is free software; you can redistribute it and/or modify
diff --git a/tests/test-gc-des.c b/tests/test-gc-des.c
index dd1ae5f6fd..da27a0dd87 100644
--- a/tests/test-gc-des.c
+++ b/tests/test-gc-des.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2005, 2010-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2005, 2010-2023 Free Software Foundation, Inc.
  * Written by Simon Josefsson
  *
  * This program is free software; you can redistribute it and/or modify
diff --git a/tests/test-gc-hmac-md5.c b/tests/test-gc-hmac-md5.c
index 878be197ae..7817a4bc33 100644
--- a/tests/test-gc-hmac-md5.c
+++ b/tests/test-gc-hmac-md5.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2005, 2010-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2005, 2010-2023 Free Software Foundation, Inc.
  * Written by Simon Josefsson
  *
  * This program is free software; you can redistribute it and/or modify
diff --git a/tests/test-gc-hmac-sha1.c b/tests/test-gc-hmac-sha1.c
index 0b529b1a3b..05c054de14 100644
--- a/tests/test-gc-hmac-sha1.c
+++ b/tests/test-gc-hmac-sha1.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2005, 2010-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2005, 2010-2023 Free Software Foundation, Inc.
  * Written by Simon Josefsson
  *
  * This program is free software; you can redistribute it and/or modify
diff --git a/tests/test-gc-hmac-sha256.c b/tests/test-gc-hmac-sha256.c
index 2dbd92469a..d9e81af9d3 100644
--- a/tests/test-gc-hmac-sha256.c
+++ b/tests/test-gc-hmac-sha256.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2005, 2010-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2005, 2010-2023 Free Software Foundation, Inc.
  * Written by Simon Josefsson
  *
  * This program is free software; you can redistribute it and/or modify
diff --git a/tests/test-gc-hmac-sha512.c b/tests/test-gc-hmac-sha512.c
index bfb190134b..d017751536 100644
--- a/tests/test-gc-hmac-sha512.c
+++ b/tests/test-gc-hmac-sha512.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2005, 2010-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2005, 2010-2023 Free Software Foundation, Inc.
  * Written by Simon Josefsson
  *
  * This program is free software; you can redistribute it and/or modify
diff --git a/tests/test-gc-md2.c b/tests/test-gc-md2.c
index 2b29ba20a6..73736031a8 100644
--- a/tests/test-gc-md2.c
+++ b/tests/test-gc-md2.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2005, 2010-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2005, 2010-2023 Free Software Foundation, Inc.
  * Written by Simon Josefsson
  *
  * This program is free software; you can redistribute it and/or modify
diff --git a/tests/test-gc-md4.c b/tests/test-gc-md4.c
index 73fe46d9aa..4b6fc09a2a 100644
--- a/tests/test-gc-md4.c
+++ b/tests/test-gc-md4.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2005, 2010-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2005, 2010-2023 Free Software Foundation, Inc.
  * Written by Simon Josefsson
  *
  * This program is free software; you can redistribute it and/or modify
diff --git a/tests/test-gc-md5.c b/tests/test-gc-md5.c
index aca853f1da..7b1d0877d5 100644
--- a/tests/test-gc-md5.c
+++ b/tests/test-gc-md5.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2005, 2010-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2005, 2010-2023 Free Software Foundation, Inc.
  * Written by Simon Josefsson
  *
  * This program is free software; you can redistribute it and/or modify
diff --git a/tests/test-gc-pbkdf2-sha1.c b/tests/test-gc-pbkdf2-sha1.c
index adb7ef3922..f09362600d 100644
--- a/tests/test-gc-pbkdf2-sha1.c
+++ b/tests/test-gc-pbkdf2-sha1.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2002-2005, 2007, 2010-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2002-2005, 2007, 2010-2023 Free Software Foundation, Inc.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/tests/test-gc-pbkdf2.c b/tests/test-gc-pbkdf2.c
index 44cda4188b..1d59e6998f 100644
--- a/tests/test-gc-pbkdf2.c
+++ b/tests/test-gc-pbkdf2.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2002-2005, 2007, 2010-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2002-2005, 2007, 2010-2023 Free Software Foundation, Inc.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/tests/test-gc-rijndael.c b/tests/test-gc-rijndael.c
index 62b29ff6d7..2439d89201 100644
--- a/tests/test-gc-rijndael.c
+++ b/tests/test-gc-rijndael.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2005, 2010-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2005, 2010-2023 Free Software Foundation, Inc.
  * Written by Simon Josefsson
  *
  * This program is free software; you can redistribute it and/or modify
diff --git a/tests/test-gc-sha1.c b/tests/test-gc-sha1.c
index f1444a213c..7b35bfe472 100644
--- a/tests/test-gc-sha1.c
+++ b/tests/test-gc-sha1.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2005, 2010-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2005, 2010-2023 Free Software Foundation, Inc.
  * Written by Simon Josefsson
  *
  * This program is free software; you can redistribute it and/or modify
diff --git a/tests/test-gc-sha256.c b/tests/test-gc-sha256.c
index d8958d75a1..d9214543b4 100644
--- a/tests/test-gc-sha256.c
+++ b/tests/test-gc-sha256.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2005, 2010-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2005, 2010-2023 Free Software Foundation, Inc.
  * Written by Simon Josefsson
  *
  * This program is free software; you can redistribute it and/or modify
diff --git a/tests/test-gc-sha512.c b/tests/test-gc-sha512.c
index 3ed764ce9a..bf4c2b2e31 100644
--- a/tests/test-gc-sha512.c
+++ b/tests/test-gc-sha512.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2005, 2010-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2005, 2010-2023 Free Software Foundation, Inc.
  * Written by Simon Josefsson
  *
  * This program is free software; you can redistribute it and/or modify
diff --git a/tests/test-gc-sm3.c b/tests/test-gc-sm3.c
index d55def2b77..63e2a1d05c 100644
--- a/tests/test-gc-sm3.c
+++ b/tests/test-gc-sm3.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2017-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2017-2023 Free Software Foundation, Inc.
  * Written by Jia Zhang <qianyue.zj@alibaba-inc.com>
  *
  * This program is free software; you can redistribute it and/or modify
diff --git a/tests/test-gc.c b/tests/test-gc.c
index 2af2c34ba4..eb5c799ba5 100644
--- a/tests/test-gc.c
+++ b/tests/test-gc.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2005-2006, 2010-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2005-2006, 2010-2023 Free Software Foundation, Inc.
  * Written by Simon Josefsson
  *
  * This program is free software; you can redistribute it and/or modify
diff --git a/tests/test-get-rusage-as.c b/tests/test-get-rusage-as.c
index 2cfa501e3c..4351a71633 100644
--- a/tests/test-get-rusage-as.c
+++ b/tests/test-get-rusage-as.c
@@ -1,5 +1,5 @@
 /* Test of getter for RLIMIT_AS.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-get-rusage-data.c b/tests/test-get-rusage-data.c
index be045ad79f..4f0eb53e9d 100644
--- a/tests/test-get-rusage-data.c
+++ b/tests/test-get-rusage-data.c
@@ -1,5 +1,5 @@
 /* Test of getter for RLIMIT_DATA.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-getaddrinfo.c b/tests/test-getaddrinfo.c
index 48a3874250..880b9005c8 100644
--- a/tests/test-getaddrinfo.c
+++ b/tests/test-getaddrinfo.c
@@ -1,6 +1,6 @@
 /* Test the getaddrinfo module.
 
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-getcwd-lgpl.c b/tests/test-getcwd-lgpl.c
index 73fad473de..821244f3de 100644
--- a/tests/test-getcwd-lgpl.c
+++ b/tests/test-getcwd-lgpl.c
@@ -1,5 +1,5 @@
 /* Test of getcwd() function.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-getcwd.c b/tests/test-getcwd.c
index 439c2b1dd1..aa510d4e45 100644
--- a/tests/test-getcwd.c
+++ b/tests/test-getcwd.c
@@ -1,5 +1,5 @@
 /* Test of getcwd() function.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-getdelim.c b/tests/test-getdelim.c
index 87de470c19..28e16a1bda 100644
--- a/tests/test-getdelim.c
+++ b/tests/test-getdelim.c
@@ -1,5 +1,5 @@
 /* Test of getdelim() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-getdomainname.c b/tests/test-getdomainname.c
index f1e7fb49f2..c1c74e1c6c 100644
--- a/tests/test-getdomainname.c
+++ b/tests/test-getdomainname.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2008-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2008-2023 Free Software Foundation, Inc.
  * Written by Simon Josefsson.
  *
  * This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-getdtablesize.c b/tests/test-getdtablesize.c
index 4816427912..46a546fead 100644
--- a/tests/test-getdtablesize.c
+++ b/tests/test-getdtablesize.c
@@ -1,5 +1,5 @@
 /* Test of getdtablesize() function.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-getentropy.c b/tests/test-getentropy.c
index 9d243c7d60..a05050813d 100644
--- a/tests/test-getentropy.c
+++ b/tests/test-getentropy.c
@@ -1,5 +1,5 @@
 /* Test the getentropy function.
-   Copyright 2020-2022 Free Software Foundation, Inc.
+   Copyright 2020-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-getgroups.c b/tests/test-getgroups.c
index e5bc163f39..625d5f2788 100644
--- a/tests/test-getgroups.c
+++ b/tests/test-getgroups.c
@@ -1,5 +1,5 @@
 /* Tests of getgroups.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-gethostname.c b/tests/test-gethostname.c
index 65702624a0..1d9cc67429 100644
--- a/tests/test-gethostname.c
+++ b/tests/test-gethostname.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2008-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2008-2023 Free Software Foundation, Inc.
  * Written by Simon Josefsson.
  *
  * This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-getline.c b/tests/test-getline.c
index a33b289c0e..fa4d2ae949 100644
--- a/tests/test-getline.c
+++ b/tests/test-getline.c
@@ -1,5 +1,5 @@
 /* Test of getline() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-getloadavg.c b/tests/test-getloadavg.c
index 86799601f8..6a3ee096d3 100644
--- a/tests/test-getloadavg.c
+++ b/tests/test-getloadavg.c
@@ -1,5 +1,5 @@
 /* Test of getting load average.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-getlogin.c b/tests/test-getlogin.c
index 599d38c389..63bf2d49e7 100644
--- a/tests/test-getlogin.c
+++ b/tests/test-getlogin.c
@@ -1,5 +1,5 @@
 /* Test of getting user name.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-getlogin.h b/tests/test-getlogin.h
index 564aea9d09..e4ae3b8fb9 100644
--- a/tests/test-getlogin.h
+++ b/tests/test-getlogin.h
@@ -1,5 +1,5 @@
 /* Test of getting user name.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-getlogin_r.c b/tests/test-getlogin_r.c
index 8e1a154216..26ebcd9abc 100644
--- a/tests/test-getlogin_r.c
+++ b/tests/test-getlogin_r.c
@@ -1,5 +1,5 @@
 /* Test of getting user name.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-getndelim2.c b/tests/test-getndelim2.c
index bedbb03615..1f18b135fc 100644
--- a/tests/test-getndelim2.c
+++ b/tests/test-getndelim2.c
@@ -1,5 +1,5 @@
 /* Test of getndelim2() function.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-getopt-gnu.c b/tests/test-getopt-gnu.c
index d64ade6f89..8289a3c4d3 100644
--- a/tests/test-getopt-gnu.c
+++ b/tests/test-getopt-gnu.c
@@ -1,5 +1,5 @@
 /* Test of command line argument processing.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-getopt-main.h b/tests/test-getopt-main.h
index 34ec2b3532..510685d6f6 100644
--- a/tests/test-getopt-main.h
+++ b/tests/test-getopt-main.h
@@ -1,5 +1,5 @@
 /* Test of command line argument processing.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-getopt-posix.c b/tests/test-getopt-posix.c
index 3e0b71bf72..f933b38c38 100644
--- a/tests/test-getopt-posix.c
+++ b/tests/test-getopt-posix.c
@@ -1,5 +1,5 @@
 /* Test of command line argument processing.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-getopt.h b/tests/test-getopt.h
index a7ac4a5541..781acc1f13 100644
--- a/tests/test-getopt.h
+++ b/tests/test-getopt.h
@@ -1,5 +1,5 @@
 /* Test of command line argument processing.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-getopt_long.h b/tests/test-getopt_long.h
index faa5954e43..c686aed428 100644
--- a/tests/test-getopt_long.h
+++ b/tests/test-getopt_long.h
@@ -1,5 +1,5 @@
 /* Test of command line argument processing.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-getpass.c b/tests/test-getpass.c
index 42910a691c..856d2850ad 100644
--- a/tests/test-getpass.c
+++ b/tests/test-getpass.c
@@ -1,5 +1,5 @@
 /* Test getpass implementation.
-   Copyright (C) 2005, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005, 2009-2023 Free Software Foundation, Inc.
    Written by Simon Josefsson.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-getpeername.c b/tests/test-getpeername.c
index ba14425f2e..21ba2c923e 100644
--- a/tests/test-getpeername.c
+++ b/tests/test-getpeername.c
@@ -1,5 +1,5 @@
 /* Test getpeername() function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-getprogname.c b/tests/test-getprogname.c
index 8503f3c333..0c1f1fcfa7 100644
--- a/tests/test-getprogname.c
+++ b/tests/test-getprogname.c
@@ -1,5 +1,5 @@
 /* Test the gnulib getprogname module.
-   Copyright (C) 2016-2022 Free Software Foundation, Inc.
+   Copyright (C) 2016-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-getrandom.c b/tests/test-getrandom.c
index b0f94eec52..4670118104 100644
--- a/tests/test-getrandom.c
+++ b/tests/test-getrandom.c
@@ -1,5 +1,5 @@
 /* Test of getting random bytes.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-getrusage.c b/tests/test-getrusage.c
index ef8c806c86..815e693de6 100644
--- a/tests/test-getrusage.c
+++ b/tests/test-getrusage.c
@@ -1,5 +1,5 @@
 /* Test of getting resource utilization.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-getsockname.c b/tests/test-getsockname.c
index 3dbb4d9269..5a71abf270 100644
--- a/tests/test-getsockname.c
+++ b/tests/test-getsockname.c
@@ -1,5 +1,5 @@
 /* Test getsockname() function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-getsockopt.c b/tests/test-getsockopt.c
index 093e135018..8582f51cd4 100644
--- a/tests/test-getsockopt.c
+++ b/tests/test-getsockopt.c
@@ -1,5 +1,5 @@
 /* Test getsockopt() function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-gettime-res.c b/tests/test-gettime-res.c
index 0b13f93ec6..425fa3f25a 100644
--- a/tests/test-gettime-res.c
+++ b/tests/test-gettime-res.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 2022 Free Software Foundation, Inc.
+ * Copyright 2022-2023 Free Software Foundation, Inc.
  * Written by Paul Eggert.
  *
  * This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-gettimeofday.c b/tests/test-gettimeofday.c
index 47a5b58f3e..ac133e3695 100644
--- a/tests/test-gettimeofday.c
+++ b/tests/test-gettimeofday.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2005, 2007, 2009-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2005, 2007, 2009-2023 Free Software Foundation, Inc.
  * Written by Jim Meyering.
  *
  * This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-getumask.c b/tests/test-getumask.c
index 552b5c9a9c..6ee50836bc 100644
--- a/tests/test-getumask.c
+++ b/tests/test-getumask.c
@@ -1,5 +1,5 @@
 /* Test of retrieving the umask of the process.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-glob-h-c++.cc b/tests/test-glob-h-c++.cc
index 2909093c06..7e81e3757f 100644
--- a/tests/test-glob-h-c++.cc
+++ b/tests/test-glob-h-c++.cc
@@ -1,5 +1,5 @@
 /* Test of glob/globfree functions in C++ mode.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-glob-h.c b/tests/test-glob-h.c
index a62cdfff7d..90d542693e 100644
--- a/tests/test-glob-h.c
+++ b/tests/test-glob-h.c
@@ -1,5 +1,5 @@
 /* Test of <glob.h> substitute.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-glob.c b/tests/test-glob.c
index 61c7ca4583..62657062d1 100644
--- a/tests/test-glob.c
+++ b/tests/test-glob.c
@@ -1,5 +1,5 @@
 /* Test of glob/globfree functions.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-grantpt.c b/tests/test-grantpt.c
index 2c62b9c125..6c00915ce1 100644
--- a/tests/test-grantpt.c
+++ b/tests/test-grantpt.c
@@ -1,5 +1,5 @@
 /* Test acquiring ownership of the slave side of a pseudo-terminal.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-hamt.c b/tests/test-hamt.c
index c63fee58cd..6fdffeac06 100644
--- a/tests/test-hamt.c
+++ b/tests/test-hamt.c
@@ -1,5 +1,5 @@
 /* Test of persistent hash array mapped trie implementation.
-   Copyright (C) 2021-2022 Free Software Foundation, Inc.
+   Copyright (C) 2021-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-hard-locale.c b/tests/test-hard-locale.c
index 8570bc61ba..eb02f4f6e6 100644
--- a/tests/test-hard-locale.c
+++ b/tests/test-hard-locale.c
@@ -1,5 +1,5 @@
 /* Test of determination whether a locale is different from the "C" locale.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-hash.c b/tests/test-hash.c
index f8b404392e..08a14e2f24 100644
--- a/tests/test-hash.c
+++ b/tests/test-hash.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2009-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2009-2023 Free Software Foundation, Inc.
  * Written by Jim Meyering
  *
  * This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-hash_map.c b/tests/test-hash_map.c
index 9800cfdc4b..74f7e5c9ef 100644
--- a/tests/test-hash_map.c
+++ b/tests/test-hash_map.c
@@ -1,5 +1,5 @@
 /* Test of map data type implementation.
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2018.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-hash_set.c b/tests/test-hash_set.c
index fb327ef456..e23320aef0 100644
--- a/tests/test-hash_set.c
+++ b/tests/test-hash_set.c
@@ -1,5 +1,5 @@
 /* Test of set data type implementation.
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2018.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-hmac-md5.c b/tests/test-hmac-md5.c
index 811276c34c..b7181574a5 100644
--- a/tests/test-hmac-md5.c
+++ b/tests/test-hmac-md5.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2005, 2010-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2005, 2010-2023 Free Software Foundation, Inc.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/tests/test-hmac-sha1.c b/tests/test-hmac-sha1.c
index 0607dff06b..5967b9106d 100644
--- a/tests/test-hmac-sha1.c
+++ b/tests/test-hmac-sha1.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2005, 2010-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2005, 2010-2023 Free Software Foundation, Inc.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/tests/test-hmac-sha256.c b/tests/test-hmac-sha256.c
index d302e56a83..5dd72dc23c 100644
--- a/tests/test-hmac-sha256.c
+++ b/tests/test-hmac-sha256.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2005, 2010-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2005, 2010-2023 Free Software Foundation, Inc.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/tests/test-hmac-sha512.c b/tests/test-hmac-sha512.c
index d1e1d7b713..c4ad27cd06 100644
--- a/tests/test-hmac-sha512.c
+++ b/tests/test-hmac-sha512.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2005, 2010-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2005, 2010-2023 Free Software Foundation, Inc.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/tests/test-hypot-ieee.c b/tests/test-hypot-ieee.c
index 4a3cd93d5c..e8d107ba8c 100644
--- a/tests/test-hypot-ieee.c
+++ b/tests/test-hypot-ieee.c
@@ -1,5 +1,5 @@
 /* Test of hypot() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-hypot-ieee.h b/tests/test-hypot-ieee.h
index ee6ba499f0..cbc67fff49 100644
--- a/tests/test-hypot-ieee.h
+++ b/tests/test-hypot-ieee.h
@@ -1,5 +1,5 @@
 /* Test of hypot*() function family.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-hypot.c b/tests/test-hypot.c
index 277bc6ebd8..7fdc0a11c7 100644
--- a/tests/test-hypot.c
+++ b/tests/test-hypot.c
@@ -1,5 +1,5 @@
 /* Test of hypot() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-hypot.h b/tests/test-hypot.h
index 263d65a41f..b7d98746de 100644
--- a/tests/test-hypot.h
+++ b/tests/test-hypot.h
@@ -1,5 +1,5 @@
 /* Test of hypot*() function family.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-hypotf-ieee.c b/tests/test-hypotf-ieee.c
index a0ea466263..fc269f8972 100644
--- a/tests/test-hypotf-ieee.c
+++ b/tests/test-hypotf-ieee.c
@@ -1,5 +1,5 @@
 /* Test of hypotf() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-hypotf.c b/tests/test-hypotf.c
index b1bab31b85..948939a468 100644
--- a/tests/test-hypotf.c
+++ b/tests/test-hypotf.c
@@ -1,5 +1,5 @@
 /* Test of hypotf() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-hypotl-ieee.c b/tests/test-hypotl-ieee.c
index ed2b89fab2..70d2ca34f2 100644
--- a/tests/test-hypotl-ieee.c
+++ b/tests/test-hypotl-ieee.c
@@ -1,5 +1,5 @@
 /* Test of hypotl() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-hypotl.c b/tests/test-hypotl.c
index 6b00ca9d7f..295d5fac4b 100644
--- a/tests/test-hypotl.c
+++ b/tests/test-hypotl.c
@@ -1,5 +1,5 @@
 /* Test of hypotl() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-i-ring.c b/tests/test-i-ring.c
index fff3328dfa..1f202fa4c3 100644
--- a/tests/test-i-ring.c
+++ b/tests/test-i-ring.c
@@ -1,5 +1,5 @@
 /* Test the simple ring buffer.
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-iconv-h-c++.cc b/tests/test-iconv-h-c++.cc
index 164c081a62..18a81575c8 100644
--- a/tests/test-iconv-h-c++.cc
+++ b/tests/test-iconv-h-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <iconv.h> substitute in C++ mode.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-iconv-h.c b/tests/test-iconv-h.c
index 32bba5e880..98d8a9f868 100644
--- a/tests/test-iconv-h.c
+++ b/tests/test-iconv-h.c
@@ -1,5 +1,5 @@
 /* Test of <iconv.h> substitute.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-iconv-utf.c b/tests/test-iconv-utf.c
index a9cec47c7b..39fbdce814 100644
--- a/tests/test-iconv-utf.c
+++ b/tests/test-iconv-utf.c
@@ -1,5 +1,5 @@
 /* Test of character set conversion.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-iconv.c b/tests/test-iconv.c
index c92ac8aa39..2b6a0199b6 100644
--- a/tests/test-iconv.c
+++ b/tests/test-iconv.c
@@ -1,5 +1,5 @@
 /* Test of character set conversion.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-iconvme.c b/tests/test-iconvme.c
index 37edfdd06c..0e0f5b12c9 100644
--- a/tests/test-iconvme.c
+++ b/tests/test-iconvme.c
@@ -1,5 +1,5 @@
 /* Recode strings between character sets, using iconv.
-   Copyright (C) 2004-2005, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2004-2005, 2009-2023 Free Software Foundation, Inc.
    Written by Simon Josefsson.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-idpriv-drop.c b/tests/test-idpriv-drop.c
index d66ef939d4..c367259b95 100644
--- a/tests/test-idpriv-drop.c
+++ b/tests/test-idpriv-drop.c
@@ -1,5 +1,5 @@
 /* Test of dropping uid/gid privileges of the current process permanently.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-idpriv-droptemp.c b/tests/test-idpriv-droptemp.c
index 101747bc35..9fa19fd126 100644
--- a/tests/test-idpriv-droptemp.c
+++ b/tests/test-idpriv-droptemp.c
@@ -1,5 +1,5 @@
 /* Test of dropping uid/gid privileges of the current process temporarily.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-ieee754-h.c b/tests/test-ieee754-h.c
index 73d2ea0795..02e2db0531 100644
--- a/tests/test-ieee754-h.c
+++ b/tests/test-ieee754-h.c
@@ -1,5 +1,5 @@
 /* Test <ieee754.h>.
-   Copyright 2018-2022 Free Software Foundation, Inc.
+   Copyright 2018-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-ignore-value.c b/tests/test-ignore-value.c
index d35314b378..c2e6aaf718 100644
--- a/tests/test-ignore-value.c
+++ b/tests/test-ignore-value.c
@@ -1,6 +1,6 @@
 /* Test the "ignore-value" module.
 
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-ilogb.c b/tests/test-ilogb.c
index 79dad5c4e9..109d8486ba 100644
--- a/tests/test-ilogb.c
+++ b/tests/test-ilogb.c
@@ -1,5 +1,5 @@
 /* Test of ilogb() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-ilogb.h b/tests/test-ilogb.h
index 6587e52f3e..b3ec364277 100644
--- a/tests/test-ilogb.h
+++ b/tests/test-ilogb.h
@@ -1,5 +1,5 @@
 /* Test of ilogb*() function family.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-ilogbf.c b/tests/test-ilogbf.c
index 0fa3b94fcd..f67bf5a592 100644
--- a/tests/test-ilogbf.c
+++ b/tests/test-ilogbf.c
@@ -1,5 +1,5 @@
 /* Test of ilogbf() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-ilogbl.c b/tests/test-ilogbl.c
index dc7fa202b8..14e3f4eee7 100644
--- a/tests/test-ilogbl.c
+++ b/tests/test-ilogbl.c
@@ -1,5 +1,5 @@
 /* Test of ilogbl() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-imaxabs.c b/tests/test-imaxabs.c
index bd5f0c93a3..2ef9f89cd3 100644
--- a/tests/test-imaxabs.c
+++ b/tests/test-imaxabs.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2011-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2011-2023 Free Software Foundation, Inc.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/tests/test-imaxdiv.c b/tests/test-imaxdiv.c
index 5764393324..1f9297ce58 100644
--- a/tests/test-imaxdiv.c
+++ b/tests/test-imaxdiv.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2011-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2011-2023 Free Software Foundation, Inc.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/tests/test-immutable.c b/tests/test-immutable.c
index 01afcc5bea..04d791d705 100644
--- a/tests/test-immutable.c
+++ b/tests/test-immutable.c
@@ -1,5 +1,5 @@
 /* Test of immutable data.
-   Copyright (C) 2021-2022 Free Software Foundation, Inc.
+   Copyright (C) 2021-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-inet_ntop.c b/tests/test-inet_ntop.c
index bb36e79082..58813835b8 100644
--- a/tests/test-inet_ntop.c
+++ b/tests/test-inet_ntop.c
@@ -1,5 +1,5 @@
 /* Test of inet_ntop function.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-inet_pton.c b/tests/test-inet_pton.c
index 9ea0218f9a..b6c1571f5f 100644
--- a/tests/test-inet_pton.c
+++ b/tests/test-inet_pton.c
@@ -1,5 +1,5 @@
 /* Test of inet_pton function.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-init.sh b/tests/test-init.sh
index cac46f71b5..badc1396f3 100755
--- a/tests/test-init.sh
+++ b/tests/test-init.sh
@@ -1,6 +1,6 @@
 #!/bin/sh
 # Unit tests for init.sh
-# Copyright (C) 2011-2022 Free Software Foundation, Inc.
+# Copyright (C) 2011-2023 Free Software Foundation, Inc.
 # This file is part of the GNUlib Library.
 #
 # This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-ino-map.c b/tests/test-ino-map.c
index 8937c686d9..ce6b55be52 100644
--- a/tests/test-ino-map.c
+++ b/tests/test-ino-map.c
@@ -1,5 +1,5 @@
 /* Test the ino-map module.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-integer_length.c b/tests/test-integer_length.c
index 57cc545a80..05508a3430 100644
--- a/tests/test-integer_length.c
+++ b/tests/test-integer_length.c
@@ -1,5 +1,5 @@
 /* Test of integer_length().
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-integer_length_l.c b/tests/test-integer_length_l.c
index 9c654fa8d2..66c28a194b 100644
--- a/tests/test-integer_length_l.c
+++ b/tests/test-integer_length_l.c
@@ -1,5 +1,5 @@
 /* Test of integer_length_l().
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-integer_length_ll.c b/tests/test-integer_length_ll.c
index ffb4b44393..94819de644 100644
--- a/tests/test-integer_length_ll.c
+++ b/tests/test-integer_length_ll.c
@@ -1,5 +1,5 @@
 /* Test of integer_length_ll().
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-intprops.c b/tests/test-intprops.c
index a54d581229..5785706c08 100644
--- a/tests/test-intprops.c
+++ b/tests/test-intprops.c
@@ -1,5 +1,5 @@
 /* Test intprops.h.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-inttostr.c b/tests/test-inttostr.c
index bf305c18aa..a8870b74c3 100644
--- a/tests/test-inttostr.c
+++ b/tests/test-inttostr.c
@@ -1,5 +1,5 @@
 /* Test inttostr functions, and incidentally, INT_BUFSIZE_BOUND
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-inttypes-c++.cc b/tests/test-inttypes-c++.cc
index 38dd0649f1..cbfd73b625 100644
--- a/tests/test-inttypes-c++.cc
+++ b/tests/test-inttypes-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <inttypes.h> substitute in C++ mode.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-inttypes-c++2.cc b/tests/test-inttypes-c++2.cc
index d2dbf0da24..1251b6adfe 100644
--- a/tests/test-inttypes-c++2.cc
+++ b/tests/test-inttypes-c++2.cc
@@ -1,5 +1,5 @@
 /* Test of <inttypes.h> substitute in C++ mode.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-inttypes.c b/tests/test-inttypes.c
index 161b19c87b..464436a53b 100644
--- a/tests/test-inttypes.c
+++ b/tests/test-inttypes.c
@@ -1,5 +1,5 @@
 /* Test of <inttypes.h> substitute.
-   Copyright (C) 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-ioctl.c b/tests/test-ioctl.c
index 0db59c7402..646fe57a10 100644
--- a/tests/test-ioctl.c
+++ b/tests/test-ioctl.c
@@ -1,5 +1,5 @@
 /* Test of ioctl() function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-isatty.c b/tests/test-isatty.c
index 251e9bfe06..352365b6c6 100644
--- a/tests/test-isatty.c
+++ b/tests/test-isatty.c
@@ -1,5 +1,5 @@
 /* Test isatty() function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-isblank.c b/tests/test-isblank.c
index 2af87f4276..5f2a1838f8 100644
--- a/tests/test-isblank.c
+++ b/tests/test-isblank.c
@@ -1,5 +1,5 @@
 /* Test of isblank() function.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-isfinite.c b/tests/test-isfinite.c
index 809e18a29d..edb5f43327 100644
--- a/tests/test-isfinite.c
+++ b/tests/test-isfinite.c
@@ -1,5 +1,5 @@
 /* Test of isfinite() substitute.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-isinf.c b/tests/test-isinf.c
index 73f3fa14d8..f1bca0ce10 100644
--- a/tests/test-isinf.c
+++ b/tests/test-isinf.c
@@ -1,5 +1,5 @@
 /* Test of isinf() substitute.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-isnan.c b/tests/test-isnan.c
index be6ed64d6f..062c4cad24 100644
--- a/tests/test-isnan.c
+++ b/tests/test-isnan.c
@@ -1,5 +1,5 @@
 /* Test of isnand() substitute.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-isnand-nolibm.c b/tests/test-isnand-nolibm.c
index 6c3831c79d..4f074d3746 100644
--- a/tests/test-isnand-nolibm.c
+++ b/tests/test-isnand-nolibm.c
@@ -1,5 +1,5 @@
 /* Test of isnand() substitute.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-isnand.c b/tests/test-isnand.c
index 916156c244..4a2bb2f09c 100644
--- a/tests/test-isnand.c
+++ b/tests/test-isnand.c
@@ -1,5 +1,5 @@
 /* Test of isnand() substitute.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-isnand.h b/tests/test-isnand.h
index ef758608fa..2d89ce1aed 100644
--- a/tests/test-isnand.h
+++ b/tests/test-isnand.h
@@ -1,5 +1,5 @@
 /* Test of isnand() substitute.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-isnanf-nolibm.c b/tests/test-isnanf-nolibm.c
index c651a413c7..f87918da6f 100644
--- a/tests/test-isnanf-nolibm.c
+++ b/tests/test-isnanf-nolibm.c
@@ -1,5 +1,5 @@
 /* Test of isnanf() substitute.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-isnanf.c b/tests/test-isnanf.c
index 3209a12901..fdb827f2ef 100644
--- a/tests/test-isnanf.c
+++ b/tests/test-isnanf.c
@@ -1,5 +1,5 @@
 /* Test of isnanf() substitute.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-isnanf.h b/tests/test-isnanf.h
index 0855a03110..aa2a72c128 100644
--- a/tests/test-isnanf.h
+++ b/tests/test-isnanf.h
@@ -1,5 +1,5 @@
 /* Test of isnanf() substitute.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-isnanl-nolibm.c b/tests/test-isnanl-nolibm.c
index 3c3f5d7d38..b901d21819 100644
--- a/tests/test-isnanl-nolibm.c
+++ b/tests/test-isnanl-nolibm.c
@@ -1,5 +1,5 @@
 /* Test of isnanl() substitute.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-isnanl.c b/tests/test-isnanl.c
index d1447722f6..befabb2145 100644
--- a/tests/test-isnanl.c
+++ b/tests/test-isnanl.c
@@ -1,5 +1,5 @@
 /* Test of isnanl() substitute.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-isnanl.h b/tests/test-isnanl.h
index 37f986ed88..4ca408bf91 100644
--- a/tests/test-isnanl.h
+++ b/tests/test-isnanl.h
@@ -1,5 +1,5 @@
 /* Test of isnanl() substitute.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-iswblank.c b/tests/test-iswblank.c
index fe9a9a1f42..d8db5ff8af 100644
--- a/tests/test-iswblank.c
+++ b/tests/test-iswblank.c
@@ -1,5 +1,5 @@
 /* Test of iswblank() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-iswdigit.c b/tests/test-iswdigit.c
index ef024dc639..c2beb8d19d 100644
--- a/tests/test-iswdigit.c
+++ b/tests/test-iswdigit.c
@@ -1,5 +1,5 @@
 /* Test of iswdigit() function.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-iswxdigit.c b/tests/test-iswxdigit.c
index 96e578b0e2..84101fd8e3 100644
--- a/tests/test-iswxdigit.c
+++ b/tests/test-iswxdigit.c
@@ -1,5 +1,5 @@
 /* Test of iswxdigit() function.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-j0.c b/tests/test-j0.c
index 85196f9599..9d54b591a1 100644
--- a/tests/test-j0.c
+++ b/tests/test-j0.c
@@ -1,5 +1,5 @@
 /* Test of j0() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-j1.c b/tests/test-j1.c
index ba0d17d073..9b0e0a30d7 100644
--- a/tests/test-j1.c
+++ b/tests/test-j1.c
@@ -1,5 +1,5 @@
 /* Test of j1() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-jn.c b/tests/test-jn.c
index 858d357c66..f8cbdd670e 100644
--- a/tests/test-jn.c
+++ b/tests/test-jn.c
@@ -1,5 +1,5 @@
 /* Test of jn() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-langinfo-c++.cc b/tests/test-langinfo-c++.cc
index 3420a57074..161f47e240 100644
--- a/tests/test-langinfo-c++.cc
+++ b/tests/test-langinfo-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <langinfo.h> substitute in C++ mode.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-langinfo.c b/tests/test-langinfo.c
index 1a909b16b6..743cd12634 100644
--- a/tests/test-langinfo.c
+++ b/tests/test-langinfo.c
@@ -1,5 +1,5 @@
 /* Test of <langinfo.h> substitute.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-lchmod.c b/tests/test-lchmod.c
index 0239e7fd07..8640ac6b27 100644
--- a/tests/test-lchmod.c
+++ b/tests/test-lchmod.c
@@ -1,5 +1,5 @@
 /* Test changing the protections of a file.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-lchown.c b/tests/test-lchown.c
index 13eee846ac..6d9bcea816 100644
--- a/tests/test-lchown.c
+++ b/tests/test-lchown.c
@@ -1,5 +1,5 @@
 /* Tests of lchown.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-lchown.h b/tests/test-lchown.h
index b1a73d45e9..1e5dffef7f 100644
--- a/tests/test-lchown.h
+++ b/tests/test-lchown.h
@@ -1,5 +1,5 @@
 /* Tests of lchown.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-ldexp-ieee.c b/tests/test-ldexp-ieee.c
index 24a4e3b444..9617418807 100644
--- a/tests/test-ldexp-ieee.c
+++ b/tests/test-ldexp-ieee.c
@@ -1,5 +1,5 @@
 /* Test of ldexp() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-ldexp-ieee.h b/tests/test-ldexp-ieee.h
index bc6c17d250..cf5ba3fec8 100644
--- a/tests/test-ldexp-ieee.h
+++ b/tests/test-ldexp-ieee.h
@@ -1,5 +1,5 @@
 /* Test of ldexp*() function family.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-ldexp.c b/tests/test-ldexp.c
index 73ebbc1ff5..8a6536a8ba 100644
--- a/tests/test-ldexp.c
+++ b/tests/test-ldexp.c
@@ -1,5 +1,5 @@
 /* Test of ldexp() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-ldexp.h b/tests/test-ldexp.h
index 03872cf387..b1aac4f325 100644
--- a/tests/test-ldexp.h
+++ b/tests/test-ldexp.h
@@ -1,5 +1,5 @@
 /* Test of ldexp*() function family.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-ldexpf-ieee.c b/tests/test-ldexpf-ieee.c
index a4cd92bc22..4f558a3821 100644
--- a/tests/test-ldexpf-ieee.c
+++ b/tests/test-ldexpf-ieee.c
@@ -1,5 +1,5 @@
 /* Test of ldexpf() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-ldexpf.c b/tests/test-ldexpf.c
index 92502088f5..f72cf3f817 100644
--- a/tests/test-ldexpf.c
+++ b/tests/test-ldexpf.c
@@ -1,5 +1,5 @@
 /* Test of ldexpf() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-ldexpl-ieee.c b/tests/test-ldexpl-ieee.c
index af1a7b3d47..0179c304bd 100644
--- a/tests/test-ldexpl-ieee.c
+++ b/tests/test-ldexpl-ieee.c
@@ -1,5 +1,5 @@
 /* Test of ldexpl() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-ldexpl.c b/tests/test-ldexpl.c
index 609e843db1..337a6157bd 100644
--- a/tests/test-ldexpl.c
+++ b/tests/test-ldexpl.c
@@ -1,5 +1,5 @@
 /* Test of multiplying a 'long double' by a power of 2.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-lgamma.c b/tests/test-lgamma.c
index cff082f5d4..907ca3ad20 100644
--- a/tests/test-lgamma.c
+++ b/tests/test-lgamma.c
@@ -1,5 +1,5 @@
 /* Test of lgamma() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-libgmp.c b/tests/test-libgmp.c
index ec1766affd..a7a4d8565a 100644
--- a/tests/test-libgmp.c
+++ b/tests/test-libgmp.c
@@ -1,5 +1,5 @@
 /* Test of libgmp or its mini-gmp substitute.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-libtextstyle.c b/tests/test-libtextstyle.c
index c447e95f99..2768c310f4 100644
--- a/tests/test-libtextstyle.c
+++ b/tests/test-libtextstyle.c
@@ -1,5 +1,5 @@
 /* Ad-hoc testing program for GNU libtextstyle.
-   Copyright (C) 2018-2022 Free Software Foundation, Inc.
+   Copyright (C) 2018-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2018.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-limits-h-c++.cc b/tests/test-limits-h-c++.cc
index b6e4b387c3..c93b81f9cf 100644
--- a/tests/test-limits-h-c++.cc
+++ b/tests/test-limits-h-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <limits.h> substitute in C++ mode.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-limits-h-c++2.cc b/tests/test-limits-h-c++2.cc
index 23ea4aba8c..7710b117a1 100644
--- a/tests/test-limits-h-c++2.cc
+++ b/tests/test-limits-h-c++2.cc
@@ -1,5 +1,5 @@
 /* Test of <limits.h> substitute in C++ mode.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-limits-h.c b/tests/test-limits-h.c
index 8432ddc72d..d8cdac288d 100644
--- a/tests/test-limits-h.c
+++ b/tests/test-limits-h.c
@@ -1,5 +1,5 @@
 /* Test of <limits.h> substitute.
-   Copyright 2016-2022 Free Software Foundation, Inc.
+   Copyright 2016-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-link.c b/tests/test-link.c
index fa654dc274..cd6af3b587 100644
--- a/tests/test-link.c
+++ b/tests/test-link.c
@@ -1,5 +1,5 @@
 /* Test of link() function.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-link.h b/tests/test-link.h
index 487ce2569a..623f6c70c7 100644
--- a/tests/test-link.h
+++ b/tests/test-link.h
@@ -1,5 +1,5 @@
 /* Test of link() function.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-linkat.c b/tests/test-linkat.c
index 3ef2312107..16378b7246 100644
--- a/tests/test-linkat.c
+++ b/tests/test-linkat.c
@@ -1,5 +1,5 @@
 /* Tests of linkat.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-linked_list.c b/tests/test-linked_list.c
index eed4c0b023..21baff8925 100644
--- a/tests/test-linked_list.c
+++ b/tests/test-linked_list.c
@@ -1,5 +1,5 @@
 /* Test of sequential list data type implementation.
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-linkedhash_list.c b/tests/test-linkedhash_list.c
index 1c5f07d4b0..955454a2f1 100644
--- a/tests/test-linkedhash_list.c
+++ b/tests/test-linkedhash_list.c
@@ -1,5 +1,5 @@
 /* Test of sequential list data type implementation.
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-linkedhash_map.c b/tests/test-linkedhash_map.c
index de146b8ee7..c5de22898b 100644
--- a/tests/test-linkedhash_map.c
+++ b/tests/test-linkedhash_map.c
@@ -1,5 +1,5 @@
 /* Test of map data type implementation.
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2018.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-linkedhash_set.c b/tests/test-linkedhash_set.c
index 4e1167013e..598b57b2f9 100644
--- a/tests/test-linkedhash_set.c
+++ b/tests/test-linkedhash_set.c
@@ -1,5 +1,5 @@
 /* Test of set data type implementation.
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2018.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-list-c++.cc b/tests/test-list-c++.cc
index b1b5661c69..c2252fd264 100644
--- a/tests/test-list-c++.cc
+++ b/tests/test-list-c++.cc
@@ -1,5 +1,5 @@
 /* Test of list data type implementation as a C++ class.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2020.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-listen.c b/tests/test-listen.c
index e9d345680b..43b86a8bb0 100644
--- a/tests/test-listen.c
+++ b/tests/test-listen.c
@@ -1,5 +1,5 @@
 /* Test listen() function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-localcharset.c b/tests/test-localcharset.c
index 9d6f941ca8..e0ea591b33 100644
--- a/tests/test-localcharset.c
+++ b/tests/test-localcharset.c
@@ -1,5 +1,5 @@
 /* Manual test of localcharset() function.
-   Copyright (C) 2018-2022 Free Software Foundation, Inc.
+   Copyright (C) 2018-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-locale-c++.cc b/tests/test-locale-c++.cc
index e4c66c5b6e..367530ffe4 100644
--- a/tests/test-locale-c++.cc
+++ b/tests/test-locale-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <locale.h> substitute in C++ mode.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-locale-c++2.cc b/tests/test-locale-c++2.cc
index 1aa9fa667e..d32ac0d4d6 100644
--- a/tests/test-locale-c++2.cc
+++ b/tests/test-locale-c++2.cc
@@ -1,5 +1,5 @@
 /* Test of <locale.h> substitute in C++ mode.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-locale.c b/tests/test-locale.c
index 3aad7d85a8..831467908c 100644
--- a/tests/test-locale.c
+++ b/tests/test-locale.c
@@ -1,5 +1,5 @@
 /* Test of <locale.h> substitute.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-localeconv.c b/tests/test-localeconv.c
index e90a83d3dd..ab3f5feb7c 100644
--- a/tests/test-localeconv.c
+++ b/tests/test-localeconv.c
@@ -1,5 +1,5 @@
 /* Test of localeconv() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-localename.c b/tests/test-localename.c
index 9ba388f36a..21b12e8b2e 100644
--- a/tests/test-localename.c
+++ b/tests/test-localename.c
@@ -1,5 +1,5 @@
 /* Test of gl_locale_name function and its variants.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-lock.c b/tests/test-lock.c
index a8fb32f860..b52f7e0cd8 100644
--- a/tests/test-lock.c
+++ b/tests/test-lock.c
@@ -1,5 +1,5 @@
 /* Test of locking in multithreaded situations.
-   Copyright (C) 2005, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005, 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-log-ieee.c b/tests/test-log-ieee.c
index 12284a84ae..5ad6087255 100644
--- a/tests/test-log-ieee.c
+++ b/tests/test-log-ieee.c
@@ -1,5 +1,5 @@
 /* Test of log() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-log-ieee.h b/tests/test-log-ieee.h
index f8c0fb2069..3f51f36d6c 100644
--- a/tests/test-log-ieee.h
+++ b/tests/test-log-ieee.h
@@ -1,5 +1,5 @@
 /* Test of log*() function family.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-log.c b/tests/test-log.c
index b83f37496b..060458e7b8 100644
--- a/tests/test-log.c
+++ b/tests/test-log.c
@@ -1,5 +1,5 @@
 /* Test of log() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-log.h b/tests/test-log.h
index 8b082c629b..1d8d5f1cb6 100644
--- a/tests/test-log.h
+++ b/tests/test-log.h
@@ -1,5 +1,5 @@
 /* Test of log*() function family.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-log10-ieee.c b/tests/test-log10-ieee.c
index 2128cfa960..b540c847e5 100644
--- a/tests/test-log10-ieee.c
+++ b/tests/test-log10-ieee.c
@@ -1,5 +1,5 @@
 /* Test of log10() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-log10-ieee.h b/tests/test-log10-ieee.h
index 04ce1d76b0..13048cc5d2 100644
--- a/tests/test-log10-ieee.h
+++ b/tests/test-log10-ieee.h
@@ -1,5 +1,5 @@
 /* Test of log10*() function family.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-log10.c b/tests/test-log10.c
index 82f4494d9c..b581e68cb4 100644
--- a/tests/test-log10.c
+++ b/tests/test-log10.c
@@ -1,5 +1,5 @@
 /* Test of log10() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-log10.h b/tests/test-log10.h
index 00969d2d06..64e6a5dd51 100644
--- a/tests/test-log10.h
+++ b/tests/test-log10.h
@@ -1,5 +1,5 @@
 /* Test of log10*() function family.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-log10f-ieee.c b/tests/test-log10f-ieee.c
index 10c4667c0b..fa3ffcd85d 100644
--- a/tests/test-log10f-ieee.c
+++ b/tests/test-log10f-ieee.c
@@ -1,5 +1,5 @@
 /* Test of log10f() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-log10f.c b/tests/test-log10f.c
index 9dc70daef7..3e5583fe23 100644
--- a/tests/test-log10f.c
+++ b/tests/test-log10f.c
@@ -1,5 +1,5 @@
 /* Test of log10f() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-log10l-ieee.c b/tests/test-log10l-ieee.c
index db438c187d..d86583e790 100644
--- a/tests/test-log10l-ieee.c
+++ b/tests/test-log10l-ieee.c
@@ -1,5 +1,5 @@
 /* Test of log10l() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-log10l.c b/tests/test-log10l.c
index 7954f0b735..3a8d674f9b 100644
--- a/tests/test-log10l.c
+++ b/tests/test-log10l.c
@@ -1,5 +1,5 @@
 /* Test of log10l() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-log1p-ieee.c b/tests/test-log1p-ieee.c
index 83c6910b47..84a5ed4603 100644
--- a/tests/test-log1p-ieee.c
+++ b/tests/test-log1p-ieee.c
@@ -1,5 +1,5 @@
 /* Test of log1p() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-log1p-ieee.h b/tests/test-log1p-ieee.h
index f1ef54e9a8..c324577d03 100644
--- a/tests/test-log1p-ieee.h
+++ b/tests/test-log1p-ieee.h
@@ -1,5 +1,5 @@
 /* Test of log1p*() function family.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-log1p.c b/tests/test-log1p.c
index b2113b869f..7cd28c5eb2 100644
--- a/tests/test-log1p.c
+++ b/tests/test-log1p.c
@@ -1,5 +1,5 @@
 /* Test of log1p() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-log1p.h b/tests/test-log1p.h
index c7c8069957..57ec65a947 100644
--- a/tests/test-log1p.h
+++ b/tests/test-log1p.h
@@ -1,5 +1,5 @@
 /* Test of log1p*() function family.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-log1pf-ieee.c b/tests/test-log1pf-ieee.c
index 5e67833610..cfb8a02c71 100644
--- a/tests/test-log1pf-ieee.c
+++ b/tests/test-log1pf-ieee.c
@@ -1,5 +1,5 @@
 /* Test of log1pf() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-log1pf.c b/tests/test-log1pf.c
index 1ee3ddde07..69b175b38c 100644
--- a/tests/test-log1pf.c
+++ b/tests/test-log1pf.c
@@ -1,5 +1,5 @@
 /* Test of log1pf() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-log1pl-ieee.c b/tests/test-log1pl-ieee.c
index 4c0c97869a..c11425eadc 100644
--- a/tests/test-log1pl-ieee.c
+++ b/tests/test-log1pl-ieee.c
@@ -1,5 +1,5 @@
 /* Test of log1pl() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-log1pl.c b/tests/test-log1pl.c
index 86e5fb28e7..6d88d946d1 100644
--- a/tests/test-log1pl.c
+++ b/tests/test-log1pl.c
@@ -1,5 +1,5 @@
 /* Test of log1pl() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-log2-ieee.c b/tests/test-log2-ieee.c
index 2d1af45323..3e646348e2 100644
--- a/tests/test-log2-ieee.c
+++ b/tests/test-log2-ieee.c
@@ -1,5 +1,5 @@
 /* Test of log2() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-log2-ieee.h b/tests/test-log2-ieee.h
index 1be542cff7..2dfc94cfeb 100644
--- a/tests/test-log2-ieee.h
+++ b/tests/test-log2-ieee.h
@@ -1,5 +1,5 @@
 /* Test of log2*() function family.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-log2.c b/tests/test-log2.c
index fdb54c18df..9ba25b0715 100644
--- a/tests/test-log2.c
+++ b/tests/test-log2.c
@@ -1,5 +1,5 @@
 /* Test of log2() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-log2.h b/tests/test-log2.h
index 26c6d27953..a7ae7d75f6 100644
--- a/tests/test-log2.h
+++ b/tests/test-log2.h
@@ -1,5 +1,5 @@
 /* Test of log2*() function family.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-log2f-ieee.c b/tests/test-log2f-ieee.c
index f005e4e3a5..1a97bf3087 100644
--- a/tests/test-log2f-ieee.c
+++ b/tests/test-log2f-ieee.c
@@ -1,5 +1,5 @@
 /* Test of log2f() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-log2f.c b/tests/test-log2f.c
index 93eb7ae79f..77b3cd86cc 100644
--- a/tests/test-log2f.c
+++ b/tests/test-log2f.c
@@ -1,5 +1,5 @@
 /* Test of log2f() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-log2l-ieee.c b/tests/test-log2l-ieee.c
index 894cffae4c..c73bdc0484 100644
--- a/tests/test-log2l-ieee.c
+++ b/tests/test-log2l-ieee.c
@@ -1,5 +1,5 @@
 /* Test of log2l() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-log2l.c b/tests/test-log2l.c
index 7e488d1ee2..2892a8e9f5 100644
--- a/tests/test-log2l.c
+++ b/tests/test-log2l.c
@@ -1,5 +1,5 @@
 /* Test of log2l() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-logb-ieee.c b/tests/test-logb-ieee.c
index 385c00262a..408635ebf8 100644
--- a/tests/test-logb-ieee.c
+++ b/tests/test-logb-ieee.c
@@ -1,5 +1,5 @@
 /* Test of logb() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-logb-ieee.h b/tests/test-logb-ieee.h
index eeb401133a..8e827e9c33 100644
--- a/tests/test-logb-ieee.h
+++ b/tests/test-logb-ieee.h
@@ -1,5 +1,5 @@
 /* Test of log1b*() function family.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-logb.c b/tests/test-logb.c
index 5775b48f0b..c170ee209b 100644
--- a/tests/test-logb.c
+++ b/tests/test-logb.c
@@ -1,5 +1,5 @@
 /* Test of logb() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-logb.h b/tests/test-logb.h
index aa4728c111..375036f3af 100644
--- a/tests/test-logb.h
+++ b/tests/test-logb.h
@@ -1,5 +1,5 @@
 /* Test of logb*() function family.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-logbf-ieee.c b/tests/test-logbf-ieee.c
index 2c2aa56a24..f6c8cdd6e9 100644
--- a/tests/test-logbf-ieee.c
+++ b/tests/test-logbf-ieee.c
@@ -1,5 +1,5 @@
 /* Test of logbf() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-logbf.c b/tests/test-logbf.c
index 8af24fe346..7f2d8304f8 100644
--- a/tests/test-logbf.c
+++ b/tests/test-logbf.c
@@ -1,5 +1,5 @@
 /* Test of logbf() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-logbl-ieee.c b/tests/test-logbl-ieee.c
index 2335afcc19..7a05acabba 100644
--- a/tests/test-logbl-ieee.c
+++ b/tests/test-logbl-ieee.c
@@ -1,5 +1,5 @@
 /* Test of logbl() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-logbl.c b/tests/test-logbl.c
index 76ae225390..73e3bae68a 100644
--- a/tests/test-logbl.c
+++ b/tests/test-logbl.c
@@ -1,5 +1,5 @@
 /* Test of logbl() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-logf-ieee.c b/tests/test-logf-ieee.c
index bd90392b43..583d727bd6 100644
--- a/tests/test-logf-ieee.c
+++ b/tests/test-logf-ieee.c
@@ -1,5 +1,5 @@
 /* Test of logf() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-logf.c b/tests/test-logf.c
index c64e9ed37c..ef473a5017 100644
--- a/tests/test-logf.c
+++ b/tests/test-logf.c
@@ -1,5 +1,5 @@
 /* Test of logf() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-login_tty.c b/tests/test-login_tty.c
index c8f971de4e..7ed09f048b 100644
--- a/tests/test-login_tty.c
+++ b/tests/test-login_tty.c
@@ -1,5 +1,5 @@
 /* Test of login_tty() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-logl-ieee.c b/tests/test-logl-ieee.c
index c0ea6f3e95..9961be29ae 100644
--- a/tests/test-logl-ieee.c
+++ b/tests/test-logl-ieee.c
@@ -1,5 +1,5 @@
 /* Test of logl() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-logl.c b/tests/test-logl.c
index 057926b189..37ad7474f2 100644
--- a/tests/test-logl.c
+++ b/tests/test-logl.c
@@ -1,5 +1,5 @@
 /* Test of logl() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-lseek.c b/tests/test-lseek.c
index 1bcb06feb2..3be4891bf6 100644
--- a/tests/test-lseek.c
+++ b/tests/test-lseek.c
@@ -1,5 +1,5 @@
 /* Test of lseek() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-lstat.c b/tests/test-lstat.c
index c35d41cbb1..61aed86794 100644
--- a/tests/test-lstat.c
+++ b/tests/test-lstat.c
@@ -1,5 +1,5 @@
 /* Test of lstat() function.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-lstat.h b/tests/test-lstat.h
index 3982d16053..8a367678c4 100644
--- a/tests/test-lstat.h
+++ b/tests/test-lstat.h
@@ -1,5 +1,5 @@
 /* Test of lstat() function.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-lutimens.h b/tests/test-lutimens.h
index fdec95a226..97ed96ac7f 100644
--- a/tests/test-lutimens.h
+++ b/tests/test-lutimens.h
@@ -1,5 +1,5 @@
 /* Test of file timestamp modification functions.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-malloc-gnu.c b/tests/test-malloc-gnu.c
index 8873eb893f..e2462dad48 100644
--- a/tests/test-malloc-gnu.c
+++ b/tests/test-malloc-gnu.c
@@ -1,5 +1,5 @@
 /* Test of malloc function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-malloc-h-c++.cc b/tests/test-malloc-h-c++.cc
index e379bbe65f..f2a781916e 100644
--- a/tests/test-malloc-h-c++.cc
+++ b/tests/test-malloc-h-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <malloc.h> substitute in C++ mode.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-malloc-h.c b/tests/test-malloc-h.c
index 8c2b37916c..00582342c9 100644
--- a/tests/test-malloc-h.c
+++ b/tests/test-malloc-h.c
@@ -1,5 +1,5 @@
 /* Test of <malloc.h> substitute.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-malloca.c b/tests/test-malloca.c
index 8665f4655f..ad3dc1b2ae 100644
--- a/tests/test-malloca.c
+++ b/tests/test-malloca.c
@@ -1,5 +1,5 @@
 /* Test of safe automatic memory allocation.
-   Copyright (C) 2005, 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005, 2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-map-c++.cc b/tests/test-map-c++.cc
index c09bfd6bb5..4ecece2b67 100644
--- a/tests/test-map-c++.cc
+++ b/tests/test-map-c++.cc
@@ -1,5 +1,5 @@
 /* Test of map data type implementation as a C++ class.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2020.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-math-c++.cc b/tests/test-math-c++.cc
index 6749fa58a1..e6cdb07a26 100644
--- a/tests/test-math-c++.cc
+++ b/tests/test-math-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <math.h> substitute in C++ mode.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-math-c++2.cc b/tests/test-math-c++2.cc
index 2e911132d1..c16efce2ec 100644
--- a/tests/test-math-c++2.cc
+++ b/tests/test-math-c++2.cc
@@ -1,5 +1,5 @@
 /* Test of <math.h> substitute in C++ mode.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-math.c b/tests/test-math.c
index 7089e8d60e..874c5969f7 100644
--- a/tests/test-math.c
+++ b/tests/test-math.c
@@ -1,5 +1,5 @@
 /* Test of <math.h> substitute.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-mbmemcasecmp.c b/tests/test-mbmemcasecmp.c
index 633453d8db..477f68ba54 100644
--- a/tests/test-mbmemcasecmp.c
+++ b/tests/test-mbmemcasecmp.c
@@ -1,5 +1,5 @@
 /* Test of case-insensitive memory area comparison function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-mbmemcasecmp.h b/tests/test-mbmemcasecmp.h
index a36f263284..ed72bd5efc 100644
--- a/tests/test-mbmemcasecmp.h
+++ b/tests/test-mbmemcasecmp.h
@@ -1,5 +1,5 @@
 /* Test of case-insensitive memory area comparison function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-mbmemcasecoll.c b/tests/test-mbmemcasecoll.c
index c17ddbb153..d5b274bffa 100644
--- a/tests/test-mbmemcasecoll.c
+++ b/tests/test-mbmemcasecoll.c
@@ -1,5 +1,5 @@
 /* Test of case-insensitive memory area comparison function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-mbrtoc32-w32.c b/tests/test-mbrtoc32-w32.c
index 80db9e9f9a..403ab69ba2 100644
--- a/tests/test-mbrtoc32-w32.c
+++ b/tests/test-mbrtoc32-w32.c
@@ -1,5 +1,5 @@
 /* Test of conversion of multibyte character to 32-bit wide character.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-mbrtoc32.c b/tests/test-mbrtoc32.c
index ed479dcea2..c8f735d520 100644
--- a/tests/test-mbrtoc32.c
+++ b/tests/test-mbrtoc32.c
@@ -1,5 +1,5 @@
 /* Test of conversion of multibyte character to 32-bit wide character.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-mbrtowc-w32.c b/tests/test-mbrtowc-w32.c
index 04287e984e..5d07bb03ed 100644
--- a/tests/test-mbrtowc-w32.c
+++ b/tests/test-mbrtowc-w32.c
@@ -1,5 +1,5 @@
 /* Test of conversion of multibyte character to wide character.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-mbrtowc.c b/tests/test-mbrtowc.c
index 0e86bd49cf..9019ea0e71 100644
--- a/tests/test-mbrtowc.c
+++ b/tests/test-mbrtowc.c
@@ -1,5 +1,5 @@
 /* Test of conversion of multibyte character to wide character.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-mbscasecmp.c b/tests/test-mbscasecmp.c
index a4069aebb7..9ecff601e9 100644
--- a/tests/test-mbscasecmp.c
+++ b/tests/test-mbscasecmp.c
@@ -1,5 +1,5 @@
 /* Test of case-insensitive string comparison function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-mbscasestr1.c b/tests/test-mbscasestr1.c
index 027cbaebf1..21dec47dd5 100644
--- a/tests/test-mbscasestr1.c
+++ b/tests/test-mbscasestr1.c
@@ -1,5 +1,5 @@
 /* Test of case-insensitive searching in a string.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-mbscasestr2.c b/tests/test-mbscasestr2.c
index 657f00ec20..518dfe4b40 100644
--- a/tests/test-mbscasestr2.c
+++ b/tests/test-mbscasestr2.c
@@ -1,5 +1,5 @@
 /* Test of searching in a string.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-mbscasestr3.c b/tests/test-mbscasestr3.c
index da4fe6d355..0efdb0a660 100644
--- a/tests/test-mbscasestr3.c
+++ b/tests/test-mbscasestr3.c
@@ -1,5 +1,5 @@
 /* Test of case-insensitive searching in a string.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-mbscasestr4.c b/tests/test-mbscasestr4.c
index 3d00cead7b..5d6267c2f5 100644
--- a/tests/test-mbscasestr4.c
+++ b/tests/test-mbscasestr4.c
@@ -1,5 +1,5 @@
 /* Test of case-insensitive searching in a string.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-mbschr.c b/tests/test-mbschr.c
index b7f017b1ce..12ce803410 100644
--- a/tests/test-mbschr.c
+++ b/tests/test-mbschr.c
@@ -1,5 +1,5 @@
 /* Test of searching a string for a character.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-mbscspn.c b/tests/test-mbscspn.c
index 8b0feec29b..64964bd4b5 100644
--- a/tests/test-mbscspn.c
+++ b/tests/test-mbscspn.c
@@ -1,5 +1,5 @@
 /* Test of searching a string for a character among a given set of characters.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-mbsinit.c b/tests/test-mbsinit.c
index 699701eb0a..8b9779ca86 100644
--- a/tests/test-mbsinit.c
+++ b/tests/test-mbsinit.c
@@ -1,5 +1,5 @@
 /* Test of test for initial conversion state.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-mbsncasecmp.c b/tests/test-mbsncasecmp.c
index 62a0a674ab..062d3f5172 100644
--- a/tests/test-mbsncasecmp.c
+++ b/tests/test-mbsncasecmp.c
@@ -1,5 +1,5 @@
 /* Test of case-insensitive string comparison function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-mbsnrtoc32s.c b/tests/test-mbsnrtoc32s.c
index 960183617b..88c11f5e47 100644
--- a/tests/test-mbsnrtoc32s.c
+++ b/tests/test-mbsnrtoc32s.c
@@ -1,5 +1,5 @@
 /* Test of conversion of string to 32-bit wide string.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-mbsnrtowcs.c b/tests/test-mbsnrtowcs.c
index 043ce813fa..e3456b4e2b 100644
--- a/tests/test-mbsnrtowcs.c
+++ b/tests/test-mbsnrtowcs.c
@@ -1,5 +1,5 @@
 /* Test of conversion of string to wide string.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-mbspbrk.c b/tests/test-mbspbrk.c
index a0e7563dd8..266a1da039 100644
--- a/tests/test-mbspbrk.c
+++ b/tests/test-mbspbrk.c
@@ -1,5 +1,5 @@
 /* Test of searching a string for a character among a given set of characters.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-mbspcasecmp.c b/tests/test-mbspcasecmp.c
index 2ed3b94203..5eeed3b8bb 100644
--- a/tests/test-mbspcasecmp.c
+++ b/tests/test-mbspcasecmp.c
@@ -1,5 +1,5 @@
 /* Test of case-insensitive string comparison function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-mbsrchr.c b/tests/test-mbsrchr.c
index fd6eb68fa9..5b4bcd8006 100644
--- a/tests/test-mbsrchr.c
+++ b/tests/test-mbsrchr.c
@@ -1,5 +1,5 @@
 /* Test of searching a string for the last occurrence of a character.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-mbsrtoc32s.c b/tests/test-mbsrtoc32s.c
index a653623949..ef985fdc03 100644
--- a/tests/test-mbsrtoc32s.c
+++ b/tests/test-mbsrtoc32s.c
@@ -1,5 +1,5 @@
 /* Test of conversion of string to 32-bit wide string.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-mbsrtowcs.c b/tests/test-mbsrtowcs.c
index 60ec329a93..d511690db9 100644
--- a/tests/test-mbsrtowcs.c
+++ b/tests/test-mbsrtowcs.c
@@ -1,5 +1,5 @@
 /* Test of conversion of string to wide string.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-mbsspn.c b/tests/test-mbsspn.c
index 6528b6d527..da7ffd4369 100644
--- a/tests/test-mbsspn.c
+++ b/tests/test-mbsspn.c
@@ -1,5 +1,5 @@
 /* Test of searching a string for a character outside a given set of 
characters.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-mbsstr1.c b/tests/test-mbsstr1.c
index 3bdb47c216..0de4a9ac4a 100644
--- a/tests/test-mbsstr1.c
+++ b/tests/test-mbsstr1.c
@@ -1,5 +1,5 @@
 /* Test of searching in a string.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-mbsstr2.c b/tests/test-mbsstr2.c
index fe99cb0e53..2f034ab07b 100644
--- a/tests/test-mbsstr2.c
+++ b/tests/test-mbsstr2.c
@@ -1,5 +1,5 @@
 /* Test of searching in a string.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-mbsstr3.c b/tests/test-mbsstr3.c
index c9f38fb679..5831f17018 100644
--- a/tests/test-mbsstr3.c
+++ b/tests/test-mbsstr3.c
@@ -1,5 +1,5 @@
 /* Test of searching in a string.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-mbstoc32s.c b/tests/test-mbstoc32s.c
index c495ae65d5..5358118906 100644
--- a/tests/test-mbstoc32s.c
+++ b/tests/test-mbstoc32s.c
@@ -1,5 +1,5 @@
 /* Test of conversion of string to 32-bit wide string.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-md2-buffer.c b/tests/test-md2-buffer.c
index 4c81351aab..c7d3febea3 100644
--- a/tests/test-md2-buffer.c
+++ b/tests/test-md2-buffer.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2005, 2010-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2005, 2010-2023 Free Software Foundation, Inc.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/tests/test-md4-buffer.c b/tests/test-md4-buffer.c
index 819a76f8fc..40f3e71d8b 100644
--- a/tests/test-md4-buffer.c
+++ b/tests/test-md4-buffer.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2005, 2010-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2005, 2010-2023 Free Software Foundation, Inc.
  * Written by Simon Josefsson
  *
  * This program is free software; you can redistribute it and/or modify
diff --git a/tests/test-md5-buffer.c b/tests/test-md5-buffer.c
index c181daad9d..2c4e94edd1 100644
--- a/tests/test-md5-buffer.c
+++ b/tests/test-md5-buffer.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2005, 2009-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2005, 2009-2023 Free Software Foundation, Inc.
  * Written by Simon Josefsson
  *
  * This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-md5-stream.c b/tests/test-md5-stream.c
index c3a15024d4..248d88140b 100644
--- a/tests/test-md5-stream.c
+++ b/tests/test-md5-stream.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2005, 2009-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2005, 2009-2023 Free Software Foundation, Inc.
  * Written by Simon Josefsson
  *
  * This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-memalign.c b/tests/test-memalign.c
index 46191e7433..272955aa74 100644
--- a/tests/test-memalign.c
+++ b/tests/test-memalign.c
@@ -1,6 +1,6 @@
 /* Test of allocating memory with given alignment.
 
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-memcasecmp.c b/tests/test-memcasecmp.c
index 407bb8a659..1352b59001 100644
--- a/tests/test-memcasecmp.c
+++ b/tests/test-memcasecmp.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2008-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2008-2023 Free Software Foundation, Inc.
  * Written by Simon Josefsson and Bruno Haible
  *
  * This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-memchr.c b/tests/test-memchr.c
index 8a2d3de406..9d31353452 100644
--- a/tests/test-memchr.c
+++ b/tests/test-memchr.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2008-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2008-2023 Free Software Foundation, Inc.
  * Written by Eric Blake and Bruno Haible
  *
  * This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-memchr2.c b/tests/test-memchr2.c
index 3f5e665fe8..328463fb77 100644
--- a/tests/test-memchr2.c
+++ b/tests/test-memchr2.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2008-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2008-2023 Free Software Foundation, Inc.
  * Written by Eric Blake
  *
  * This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-memcmp.c b/tests/test-memcmp.c
index d92f204a71..dde489eb73 100644
--- a/tests/test-memcmp.c
+++ b/tests/test-memcmp.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2008-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2008-2023 Free Software Foundation, Inc.
  * Written by Simon Josefsson
  *
  * This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-memcoll.c b/tests/test-memcoll.c
index ca8c52c888..073e8bd63d 100644
--- a/tests/test-memcoll.c
+++ b/tests/test-memcoll.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2008-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2008-2023 Free Software Foundation, Inc.
  * Written by Simon Josefsson and Bruno Haible
  *
  * This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-memmem.c b/tests/test-memmem.c
index d70f530cc6..0daf3b07e7 100644
--- a/tests/test-memmem.c
+++ b/tests/test-memmem.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2004, 2007-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2004, 2007-2023 Free Software Foundation, Inc.
  * Written by Bruno Haible and Eric Blake
  *
  * This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-memrchr.c b/tests/test-memrchr.c
index 3d2c0cdc0e..0fd22187ab 100644
--- a/tests/test-memrchr.c
+++ b/tests/test-memrchr.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2008-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2008-2023 Free Software Foundation, Inc.
  * Written by Eric Blake and Bruno Haible
  *
  * This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-memset_explicit.c b/tests/test-memset_explicit.c
index 3ad343b73f..ff5b9e62ef 100644
--- a/tests/test-memset_explicit.c
+++ b/tests/test-memset_explicit.c
@@ -1,5 +1,5 @@
 /* Test memset_explicit.
-   Copyright 2020-2022 Free Software Foundation, Inc.
+   Copyright 2020-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-mkdir.c b/tests/test-mkdir.c
index 0d0520dafe..022d80d45e 100644
--- a/tests/test-mkdir.c
+++ b/tests/test-mkdir.c
@@ -1,5 +1,5 @@
 /* Tests of mkdir.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-mkdir.h b/tests/test-mkdir.h
index 7d43ef80ee..4e57abee21 100644
--- a/tests/test-mkdir.h
+++ b/tests/test-mkdir.h
@@ -1,5 +1,5 @@
 /* Test of mkdir() function.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-mkdirat.c b/tests/test-mkdirat.c
index 446f81967c..11e29049c4 100644
--- a/tests/test-mkdirat.c
+++ b/tests/test-mkdirat.c
@@ -1,5 +1,5 @@
 /* Tests of mkdirat.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-mkfifo.c b/tests/test-mkfifo.c
index c31809961d..502bfd5a3c 100644
--- a/tests/test-mkfifo.c
+++ b/tests/test-mkfifo.c
@@ -1,5 +1,5 @@
 /* Tests of mkfifo.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-mkfifo.h b/tests/test-mkfifo.h
index 03f4c30e42..365fc6dd50 100644
--- a/tests/test-mkfifo.h
+++ b/tests/test-mkfifo.h
@@ -1,5 +1,5 @@
 /* Tests of mkfifo and friends.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-mkfifoat.c b/tests/test-mkfifoat.c
index 38a933c8e3..460afbd67d 100644
--- a/tests/test-mkfifoat.c
+++ b/tests/test-mkfifoat.c
@@ -1,5 +1,5 @@
 /* Tests of mkfifoat and mknodat.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-mknod.c b/tests/test-mknod.c
index 314bc61fe7..b23e6922f6 100644
--- a/tests/test-mknod.c
+++ b/tests/test-mknod.c
@@ -1,5 +1,5 @@
 /* Tests of mknod.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-modf-ieee.c b/tests/test-modf-ieee.c
index b45e4056c0..f1851352ab 100644
--- a/tests/test-modf-ieee.c
+++ b/tests/test-modf-ieee.c
@@ -1,5 +1,5 @@
 /* Test of modf() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-modf-ieee.h b/tests/test-modf-ieee.h
index 017b4a6ad8..b50006eb62 100644
--- a/tests/test-modf-ieee.h
+++ b/tests/test-modf-ieee.h
@@ -1,5 +1,5 @@
 /* Test of modf*() function family.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-modf.c b/tests/test-modf.c
index 83559620d6..a17efc3869 100644
--- a/tests/test-modf.c
+++ b/tests/test-modf.c
@@ -1,5 +1,5 @@
 /* Test of modf() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-modf.h b/tests/test-modf.h
index 0d9e80d422..76d22451ac 100644
--- a/tests/test-modf.h
+++ b/tests/test-modf.h
@@ -1,5 +1,5 @@
 /* Test of modf*() function family.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-modff-ieee.c b/tests/test-modff-ieee.c
index 8360b7f8bd..c4d3248d43 100644
--- a/tests/test-modff-ieee.c
+++ b/tests/test-modff-ieee.c
@@ -1,5 +1,5 @@
 /* Test of modff() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-modff.c b/tests/test-modff.c
index 147959c39e..3596472eec 100644
--- a/tests/test-modff.c
+++ b/tests/test-modff.c
@@ -1,5 +1,5 @@
 /* Test of modff() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-modfl-ieee.c b/tests/test-modfl-ieee.c
index 4f3052124f..21ceae39ba 100644
--- a/tests/test-modfl-ieee.c
+++ b/tests/test-modfl-ieee.c
@@ -1,5 +1,5 @@
 /* Test of modfl() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-modfl.c b/tests/test-modfl.c
index dfb0085617..38db028ab7 100644
--- a/tests/test-modfl.c
+++ b/tests/test-modfl.c
@@ -1,5 +1,5 @@
 /* Test of modfl() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-monetary-c++.cc b/tests/test-monetary-c++.cc
index 814a589d77..3abd45a8f8 100644
--- a/tests/test-monetary-c++.cc
+++ b/tests/test-monetary-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <monetary.h> substitute in C++ mode.
-   Copyright (C) 2017-2022 Free Software Foundation, Inc.
+   Copyright (C) 2017-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-monetary.c b/tests/test-monetary.c
index 0ed1063543..d5dd530eb1 100644
--- a/tests/test-monetary.c
+++ b/tests/test-monetary.c
@@ -1,5 +1,5 @@
 /* Test of <monetary.h> substitute.
-   Copyright (C) 2017-2022 Free Software Foundation, Inc.
+   Copyright (C) 2017-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-mtx.c b/tests/test-mtx.c
index 9181fcece9..128c403720 100644
--- a/tests/test-mtx.c
+++ b/tests/test-mtx.c
@@ -1,5 +1,5 @@
 /* Test of locking in multithreaded situations.
-   Copyright (C) 2005, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005, 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-nanosleep.c b/tests/test-nanosleep.c
index c208161559..c2f2a1922c 100644
--- a/tests/test-nanosleep.c
+++ b/tests/test-nanosleep.c
@@ -1,5 +1,5 @@
 /* Test of nanosleep() function.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-net_if-c++.cc b/tests/test-net_if-c++.cc
index b78d00be95..42d375d48c 100644
--- a/tests/test-net_if-c++.cc
+++ b/tests/test-net_if-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <net/if.h> substitute in C++ mode.
-   Copyright (C) 2022 Free Software Foundation, Inc.
+   Copyright (C) 2022-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-net_if.c b/tests/test-net_if.c
index c90b4a1a8a..1b8be41943 100644
--- a/tests/test-net_if.c
+++ b/tests/test-net_if.c
@@ -1,5 +1,5 @@
 /* Test of <net/if.h> functions.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-netdb-c++.cc b/tests/test-netdb-c++.cc
index 106608cd5b..cd12f544a0 100644
--- a/tests/test-netdb-c++.cc
+++ b/tests/test-netdb-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <netdb.h> substitute in C++ mode.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-netdb.c b/tests/test-netdb.c
index 378a7aff8f..a8a17bfa45 100644
--- a/tests/test-netdb.c
+++ b/tests/test-netdb.c
@@ -1,5 +1,5 @@
 /* Test of <netdb.h> substitute.
-   Copyright (C) 2007-2008, 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2008, 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-netinet_in-c++.cc b/tests/test-netinet_in-c++.cc
index e28192573f..7a8a257ac5 100644
--- a/tests/test-netinet_in-c++.cc
+++ b/tests/test-netinet_in-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <netinet/in.h> substitute in C++ mode.
-   Copyright (C) 2022 Free Software Foundation, Inc.
+   Copyright (C) 2022-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-netinet_in.c b/tests/test-netinet_in.c
index 3bc110e5b9..0639d2f5d9 100644
--- a/tests/test-netinet_in.c
+++ b/tests/test-netinet_in.c
@@ -1,5 +1,5 @@
 /* Test of <netinet/in.h> substitute.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-nextafter.c b/tests/test-nextafter.c
index f00f1d32a4..666ca21424 100644
--- a/tests/test-nextafter.c
+++ b/tests/test-nextafter.c
@@ -1,5 +1,5 @@
 /* Test of nextafter() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-nl_langinfo-mt.c b/tests/test-nl_langinfo-mt.c
index 1912e0dba5..806a093d77 100644
--- a/tests/test-nl_langinfo-mt.c
+++ b/tests/test-nl_langinfo-mt.c
@@ -1,5 +1,5 @@
 /* Multithread-safety test for nl_langinfo().
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-nl_langinfo.c b/tests/test-nl_langinfo.c
index f1a1d72839..5254f8626e 100644
--- a/tests/test-nl_langinfo.c
+++ b/tests/test-nl_langinfo.c
@@ -1,5 +1,5 @@
 /* Test of nl_langinfo replacement.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-nonblocking-misc.h b/tests/test-nonblocking-misc.h
index a1eeb22ed1..a6558ad167 100644
--- a/tests/test-nonblocking-misc.h
+++ b/tests/test-nonblocking-misc.h
@@ -1,6 +1,6 @@
 /* Test for nonblocking read and write.
 
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-nonblocking-pipe-child.c 
b/tests/test-nonblocking-pipe-child.c
index cced8dc0e4..d172ba94f6 100644
--- a/tests/test-nonblocking-pipe-child.c
+++ b/tests/test-nonblocking-pipe-child.c
@@ -1,6 +1,6 @@
 /* Child program invoked by test-nonblocking-pipe-main.
 
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-nonblocking-pipe-main.c 
b/tests/test-nonblocking-pipe-main.c
index e8e92980b1..a2819a7514 100644
--- a/tests/test-nonblocking-pipe-main.c
+++ b/tests/test-nonblocking-pipe-main.c
@@ -1,6 +1,6 @@
 /* Test for nonblocking read and write on pipes.
 
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-nonblocking-pipe.h b/tests/test-nonblocking-pipe.h
index e70e61afdf..f19c671a4f 100644
--- a/tests/test-nonblocking-pipe.h
+++ b/tests/test-nonblocking-pipe.h
@@ -1,6 +1,6 @@
 /* Test for nonblocking read and write.
 
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-nonblocking-reader.h b/tests/test-nonblocking-reader.h
index 819540eedb..e6f7a3da45 100644
--- a/tests/test-nonblocking-reader.h
+++ b/tests/test-nonblocking-reader.h
@@ -1,6 +1,6 @@
 /* The reader part of a test program for non-blocking communication.
 
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-nonblocking-socket-child.c 
b/tests/test-nonblocking-socket-child.c
index 640fc5d3c8..b97e089909 100644
--- a/tests/test-nonblocking-socket-child.c
+++ b/tests/test-nonblocking-socket-child.c
@@ -1,6 +1,6 @@
 /* Child program invoked by test-nonblocking-socket-main.
 
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-nonblocking-socket-main.c 
b/tests/test-nonblocking-socket-main.c
index 4008c733db..a6eddc5412 100644
--- a/tests/test-nonblocking-socket-main.c
+++ b/tests/test-nonblocking-socket-main.c
@@ -1,6 +1,6 @@
 /* Test for nonblocking read and write on sockets.
 
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-nonblocking-socket.h b/tests/test-nonblocking-socket.h
index 59e82e2d33..b605d46d83 100644
--- a/tests/test-nonblocking-socket.h
+++ b/tests/test-nonblocking-socket.h
@@ -1,6 +1,6 @@
 /* Test for nonblocking read and write.
 
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-nonblocking-writer.h b/tests/test-nonblocking-writer.h
index 3a848fa982..d5d7e03091 100644
--- a/tests/test-nonblocking-writer.h
+++ b/tests/test-nonblocking-writer.h
@@ -1,6 +1,6 @@
 /* The writer part of a test program for non-blocking communication.
 
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-nonblocking.c b/tests/test-nonblocking.c
index 41f44111a5..4b164d318c 100644
--- a/tests/test-nonblocking.c
+++ b/tests/test-nonblocking.c
@@ -1,5 +1,5 @@
 /* Test manipulation of non-blocking flag.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-noreturn-c++.cc b/tests/test-noreturn-c++.cc
index 534ae07925..6633a9bf40 100644
--- a/tests/test-noreturn-c++.cc
+++ b/tests/test-noreturn-c++.cc
@@ -1,5 +1,5 @@
 /* Test of macros for declaring functions as non-returning.
-   Copyright (C) 2017-2022 Free Software Foundation, Inc.
+   Copyright (C) 2017-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-noreturn.c b/tests/test-noreturn.c
index 95c499eac3..f061afbc4e 100644
--- a/tests/test-noreturn.c
+++ b/tests/test-noreturn.c
@@ -1,5 +1,5 @@
 /* Test of macros for declaring functions as non-returning.
-   Copyright (C) 2017-2022 Free Software Foundation, Inc.
+   Copyright (C) 2017-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-nstrftime.c b/tests/test-nstrftime.c
index 7a89f907dd..22dab6c9e4 100644
--- a/tests/test-nstrftime.c
+++ b/tests/test-nstrftime.c
@@ -1,5 +1,5 @@
 /* Test that nstrftime works as required.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-obstack-printf.c b/tests/test-obstack-printf.c
index d794e6a883..71d5f9db3f 100644
--- a/tests/test-obstack-printf.c
+++ b/tests/test-obstack-printf.c
@@ -1,5 +1,5 @@
 /* Test of obstack_printf() and obstack_vprintf() functions.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-omap-c++.cc b/tests/test-omap-c++.cc
index 4d98839fd6..b18b9b9f7c 100644
--- a/tests/test-omap-c++.cc
+++ b/tests/test-omap-c++.cc
@@ -1,5 +1,5 @@
 /* Test of ordered map data type implementation as a C++ class.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2020.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-once.c b/tests/test-once.c
index 5efe7c4a6b..190ae593a1 100644
--- a/tests/test-once.c
+++ b/tests/test-once.c
@@ -1,5 +1,5 @@
 /* Test of once-only execution in multithreaded situations.
-   Copyright (C) 2018-2022 Free Software Foundation, Inc.
+   Copyright (C) 2018-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-open.c b/tests/test-open.c
index d7c5a0869d..e137cef80b 100644
--- a/tests/test-open.c
+++ b/tests/test-open.c
@@ -1,5 +1,5 @@
 /* Test of opening a file descriptor.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-open.h b/tests/test-open.h
index 0da20a17e3..18549c4c4f 100644
--- a/tests/test-open.h
+++ b/tests/test-open.h
@@ -1,5 +1,5 @@
 /* Test of opening a file descriptor.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-openat-safer.c b/tests/test-openat-safer.c
index c5c379927e..94dcda68e4 100644
--- a/tests/test-openat-safer.c
+++ b/tests/test-openat-safer.c
@@ -1,5 +1,5 @@
 /* Test that openat_safer leave standard fds alone.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-openat.c b/tests/test-openat.c
index 5502bdd98a..ff6cd988fc 100644
--- a/tests/test-openat.c
+++ b/tests/test-openat.c
@@ -1,5 +1,5 @@
 /* Test that openat works.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-openpty.c b/tests/test-openpty.c
index ed16bbf241..04848cd533 100644
--- a/tests/test-openpty.c
+++ b/tests/test-openpty.c
@@ -1,5 +1,5 @@
 /* Test of pty.h and openpty function.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-oset-c++.cc b/tests/test-oset-c++.cc
index f96824314f..e5195e10ab 100644
--- a/tests/test-oset-c++.cc
+++ b/tests/test-oset-c++.cc
@@ -1,5 +1,5 @@
 /* Test of ordered set data type implementation as a C++ class.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2020.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-oset-update.h b/tests/test-oset-update.h
index 43e6492ff9..eb77990319 100644
--- a/tests/test-oset-update.h
+++ b/tests/test-oset-update.h
@@ -1,5 +1,5 @@
 /* Test of ordered set data type implementation.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2020.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-parse-datetime.c b/tests/test-parse-datetime.c
index 6dbcb3ac93..4c537ef122 100644
--- a/tests/test-parse-datetime.c
+++ b/tests/test-parse-datetime.c
@@ -1,5 +1,5 @@
 /* Test of parse_datetime() function.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-parse-duration.c b/tests/test-parse-duration.c
index d471185a37..eca67969d9 100644
--- a/tests/test-parse-duration.c
+++ b/tests/test-parse-duration.c
@@ -1,5 +1,5 @@
 /* Test of parsing durations.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-passfd.c b/tests/test-passfd.c
index e9b38be141..27fdd3c4e9 100644
--- a/tests/test-passfd.c
+++ b/tests/test-passfd.c
@@ -1,5 +1,5 @@
 /* Test of passing file descriptors.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-pathmax.c b/tests/test-pathmax.c
index 5f1f9cc2cd..f65b2d858e 100644
--- a/tests/test-pathmax.c
+++ b/tests/test-pathmax.c
@@ -1,5 +1,5 @@
 /* Test of "pathmax.h".
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-perror.c b/tests/test-perror.c
index e1ab3d6bf2..3ef0bc8b23 100644
--- a/tests/test-perror.c
+++ b/tests/test-perror.c
@@ -1,5 +1,5 @@
 /* Test of perror() function.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-perror2.c b/tests/test-perror2.c
index f1eb511033..de12480322 100644
--- a/tests/test-perror2.c
+++ b/tests/test-perror2.c
@@ -1,5 +1,5 @@
 /* Test of perror() function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-pipe-filter-gi1.c b/tests/test-pipe-filter-gi1.c
index 1cde6f6fee..05bcc08ae9 100644
--- a/tests/test-pipe-filter-gi1.c
+++ b/tests/test-pipe-filter-gi1.c
@@ -1,5 +1,5 @@
 /* Test of filtering of data through a subprocess.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <haible@clisp.cons.org>, 2009.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-pipe-filter-gi2-child.c 
b/tests/test-pipe-filter-gi2-child.c
index 684d907de5..1c8c60007a 100644
--- a/tests/test-pipe-filter-gi2-child.c
+++ b/tests/test-pipe-filter-gi2-child.c
@@ -1,6 +1,6 @@
 /* Child program invoked by test-pipe-filter-gi2-main.
 
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Paolo Bonzini <bonzini@gnu.org>, 2009.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-pipe-filter-gi2-main.c 
b/tests/test-pipe-filter-gi2-main.c
index e0f97e4c0c..e124ca15c6 100644
--- a/tests/test-pipe-filter-gi2-main.c
+++ b/tests/test-pipe-filter-gi2-main.c
@@ -1,6 +1,6 @@
 /* Test harness for pipe-filter-gi.
 
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Paolo Bonzini <bonzini@gnu.org>, 2009.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-pipe-filter-gi2.sh b/tests/test-pipe-filter-gi2.sh
index 319f1be4c2..429aac2db7 100755
--- a/tests/test-pipe-filter-gi2.sh
+++ b/tests/test-pipe-filter-gi2.sh
@@ -2,7 +2,7 @@
 
 # pipe-filter test driver.
 #
-# Copyright (C) 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2009-2023 Free Software Foundation, Inc.
 # Written by Paolo Bonzini <bonzini@gnu.org>, 2009.
 #
 # This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-pipe-filter-ii1.c b/tests/test-pipe-filter-ii1.c
index 95ca1b81d6..89c4014969 100644
--- a/tests/test-pipe-filter-ii1.c
+++ b/tests/test-pipe-filter-ii1.c
@@ -1,5 +1,5 @@
 /* Test of filtering of data through a subprocess.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <haible@clisp.cons.org>, 2009.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-pipe-filter-ii2-child.c 
b/tests/test-pipe-filter-ii2-child.c
index 1b8e2b886c..d44436e4f2 100644
--- a/tests/test-pipe-filter-ii2-child.c
+++ b/tests/test-pipe-filter-ii2-child.c
@@ -1,6 +1,6 @@
 /* Child program invoked by test-pipe-filter-ii2-main.
 
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Paolo Bonzini <bonzini@gnu.org>, 2009.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-pipe-filter-ii2-main.c 
b/tests/test-pipe-filter-ii2-main.c
index b17d9218a4..7782fa6401 100644
--- a/tests/test-pipe-filter-ii2-main.c
+++ b/tests/test-pipe-filter-ii2-main.c
@@ -1,6 +1,6 @@
 /* Test harness for pipe-filter-ii.
 
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    Written by Paolo Bonzini <bonzini@gnu.org>, 2009.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-pipe-filter-ii2.sh b/tests/test-pipe-filter-ii2.sh
index 4ccebb7372..03b228b7ce 100755
--- a/tests/test-pipe-filter-ii2.sh
+++ b/tests/test-pipe-filter-ii2.sh
@@ -2,7 +2,7 @@
 
 # pipe-filter test driver.
 #
-# Copyright (C) 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2009-2023 Free Software Foundation, Inc.
 # Written by Paolo Bonzini <bonzini@gnu.org>, 2009.
 #
 # This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-pipe.c b/tests/test-pipe.c
index 0525f7d49e..de1dd2ff7c 100644
--- a/tests/test-pipe.c
+++ b/tests/test-pipe.c
@@ -1,5 +1,5 @@
 /* Test of pipe.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-pipe2.c b/tests/test-pipe2.c
index b5c641a9da..7e0cdc7828 100644
--- a/tests/test-pipe2.c
+++ b/tests/test-pipe2.c
@@ -1,5 +1,5 @@
 /* Test of pipe2.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-poll-h-c++.cc b/tests/test-poll-h-c++.cc
index ee099ef788..86c9989e6a 100644
--- a/tests/test-poll-h-c++.cc
+++ b/tests/test-poll-h-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <poll.h> substitute in C++ mode.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-poll-h.c b/tests/test-poll-h.c
index 2abbc3b5c6..257005af0f 100644
--- a/tests/test-poll-h.c
+++ b/tests/test-poll-h.c
@@ -1,5 +1,5 @@
 /* Test of <poll.h> substitute.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-poll.c b/tests/test-poll.c
index 6edaeb33a0..716c38b492 100644
--- a/tests/test-poll.c
+++ b/tests/test-poll.c
@@ -1,5 +1,5 @@
 /* Test of poll() function.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-popen-safer.c b/tests/test-popen-safer.c
index 6006506675..fa53bcacdf 100644
--- a/tests/test-popen-safer.c
+++ b/tests/test-popen-safer.c
@@ -1,5 +1,5 @@
 /* Test of opening a subcommand stream.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-popen-safer2.c b/tests/test-popen-safer2.c
index 39a032dba7..6383c77ec4 100644
--- a/tests/test-popen-safer2.c
+++ b/tests/test-popen-safer2.c
@@ -1,5 +1,5 @@
 /* Test of opening a subcommand stream.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-popen.c b/tests/test-popen.c
index b5d8b28465..902ffa6afd 100644
--- a/tests/test-popen.c
+++ b/tests/test-popen.c
@@ -1,5 +1,5 @@
 /* Test of opening a subcommand stream.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-popen.h b/tests/test-popen.h
index a08dcb2c05..386d7838fe 100644
--- a/tests/test-popen.h
+++ b/tests/test-popen.h
@@ -1,5 +1,5 @@
 /* Test of opening a subcommand stream.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-posix_memalign.c b/tests/test-posix_memalign.c
index 26f95191fc..f0c91fbd9d 100644
--- a/tests/test-posix_memalign.c
+++ b/tests/test-posix_memalign.c
@@ -1,6 +1,6 @@
 /* Test of allocating memory with given alignment.
 
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-posix_openpt.c b/tests/test-posix_openpt.c
index d5c31ce845..5565566428 100644
--- a/tests/test-posix_openpt.c
+++ b/tests/test-posix_openpt.c
@@ -1,5 +1,5 @@
 /* Test of posix_openpt function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-posix_spawn-chdir.c b/tests/test-posix_spawn-chdir.c
index 044acaf220..8164e69891 100644
--- a/tests/test-posix_spawn-chdir.c
+++ b/tests/test-posix_spawn-chdir.c
@@ -1,5 +1,5 @@
 /* Test of posix_spawn() function with 'chdir' action.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-posix_spawn-dup2-stdin.c 
b/tests/test-posix_spawn-dup2-stdin.c
index 506fdf37b9..8a6c40cf02 100644
--- a/tests/test-posix_spawn-dup2-stdin.c
+++ b/tests/test-posix_spawn-dup2-stdin.c
@@ -1,5 +1,5 @@
 /* Test of posix_spawn() function: writing to a subprocess.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-posix_spawn-dup2-stdout.c 
b/tests/test-posix_spawn-dup2-stdout.c
index 52a36fc81a..91c318d717 100644
--- a/tests/test-posix_spawn-dup2-stdout.c
+++ b/tests/test-posix_spawn-dup2-stdout.c
@@ -1,5 +1,5 @@
 /* Test of posix_spawn() function: reading from a subprocess.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-posix_spawn-fchdir.c b/tests/test-posix_spawn-fchdir.c
index 54442f0d02..f7fec7873b 100644
--- a/tests/test-posix_spawn-fchdir.c
+++ b/tests/test-posix_spawn-fchdir.c
@@ -1,5 +1,5 @@
 /* Test of posix_spawn() function with 'fchdir' action.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-posix_spawn-inherit0.c 
b/tests/test-posix_spawn-inherit0.c
index 4e479233d9..bc32e92f5b 100644
--- a/tests/test-posix_spawn-inherit0.c
+++ b/tests/test-posix_spawn-inherit0.c
@@ -1,5 +1,5 @@
 /* Test of posix_spawn() function with an inherited file descriptor 0.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-posix_spawn-inherit1.c 
b/tests/test-posix_spawn-inherit1.c
index 3308e30375..60d48f4abc 100644
--- a/tests/test-posix_spawn-inherit1.c
+++ b/tests/test-posix_spawn-inherit1.c
@@ -1,5 +1,5 @@
 /* Test of posix_spawn() function with an inherited file descriptor 1.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-posix_spawn-open1.c b/tests/test-posix_spawn-open1.c
index 21e3cb4c05..0b10c6aaf8 100644
--- a/tests/test-posix_spawn-open1.c
+++ b/tests/test-posix_spawn-open1.c
@@ -1,5 +1,5 @@
 /* Test of posix_spawn() function with 'open' action.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-posix_spawn-open2.c b/tests/test-posix_spawn-open2.c
index 49ea5ed957..465692ae35 100644
--- a/tests/test-posix_spawn-open2.c
+++ b/tests/test-posix_spawn-open2.c
@@ -1,5 +1,5 @@
 /* Test of posix_spawn() function with 'open' action and O_APPEND flag.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-posix_spawn-script.c b/tests/test-posix_spawn-script.c
index 37b5bed965..ca4302f00f 100644
--- a/tests/test-posix_spawn-script.c
+++ b/tests/test-posix_spawn-script.c
@@ -1,5 +1,5 @@
 /* Test of posix_spawn() function.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-posix_spawn_file_actions_addchdir.c 
b/tests/test-posix_spawn_file_actions_addchdir.c
index 46acec286d..2d4a5fe78b 100644
--- a/tests/test-posix_spawn_file_actions_addchdir.c
+++ b/tests/test-posix_spawn_file_actions_addchdir.c
@@ -1,5 +1,5 @@
 /* Test posix_spawn_file_actions_addchdir() function.
-   Copyright (C) 2018-2022 Free Software Foundation, Inc.
+   Copyright (C) 2018-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-posix_spawn_file_actions_addclose.c 
b/tests/test-posix_spawn_file_actions_addclose.c
index d0ab33d14f..f900415dae 100644
--- a/tests/test-posix_spawn_file_actions_addclose.c
+++ b/tests/test-posix_spawn_file_actions_addclose.c
@@ -1,5 +1,5 @@
 /* Test posix_spawn_file_actions_addclose() function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-posix_spawn_file_actions_adddup2.c 
b/tests/test-posix_spawn_file_actions_adddup2.c
index f476d2bc2e..3b47ff6cb5 100644
--- a/tests/test-posix_spawn_file_actions_adddup2.c
+++ b/tests/test-posix_spawn_file_actions_adddup2.c
@@ -1,5 +1,5 @@
 /* Test posix_spawn_file_actions_adddup2() function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-posix_spawn_file_actions_addfchdir.c 
b/tests/test-posix_spawn_file_actions_addfchdir.c
index b5f3d77780..3e73acdf46 100644
--- a/tests/test-posix_spawn_file_actions_addfchdir.c
+++ b/tests/test-posix_spawn_file_actions_addfchdir.c
@@ -1,5 +1,5 @@
 /* Test posix_spawn_file_actions_addfchdir() function.
-   Copyright (C) 2018-2022 Free Software Foundation, Inc.
+   Copyright (C) 2018-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-posix_spawn_file_actions_addopen.c 
b/tests/test-posix_spawn_file_actions_addopen.c
index fa9590ec06..acc130e7df 100644
--- a/tests/test-posix_spawn_file_actions_addopen.c
+++ b/tests/test-posix_spawn_file_actions_addopen.c
@@ -1,5 +1,5 @@
 /* Test posix_spawn_file_actions_addopen() function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-posix_spawnp-script.c b/tests/test-posix_spawnp-script.c
index d2035ed63e..a057fefc73 100644
--- a/tests/test-posix_spawnp-script.c
+++ b/tests/test-posix_spawnp-script.c
@@ -1,5 +1,5 @@
 /* Test of posix_spawnp() function.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-posixtm.c b/tests/test-posixtm.c
index 7cdc08de90..eba31b4d84 100644
--- a/tests/test-posixtm.c
+++ b/tests/test-posixtm.c
@@ -1,5 +1,5 @@
 /* Test that posixtime works as required.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-pow.c b/tests/test-pow.c
index b882114ad0..a199c73082 100644
--- a/tests/test-pow.c
+++ b/tests/test-pow.c
@@ -1,5 +1,5 @@
 /* Test of pow() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-powf.c b/tests/test-powf.c
index b894e1bc93..d3296f6d95 100644
--- a/tests/test-powf.c
+++ b/tests/test-powf.c
@@ -1,5 +1,5 @@
 /* Test of powf() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-pread.c b/tests/test-pread.c
index fb7547e57d..51e011c5f4 100644
--- a/tests/test-pread.c
+++ b/tests/test-pread.c
@@ -1,5 +1,5 @@
 /* Test the pread function.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-printf-frexp.c b/tests/test-printf-frexp.c
index 01b34a5186..3965588f58 100644
--- a/tests/test-printf-frexp.c
+++ b/tests/test-printf-frexp.c
@@ -1,5 +1,5 @@
 /* Test of splitting a double into fraction and mantissa.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-printf-frexpl.c b/tests/test-printf-frexpl.c
index bc30fd1bbe..ede6127a77 100644
--- a/tests/test-printf-frexpl.c
+++ b/tests/test-printf-frexpl.c
@@ -1,5 +1,5 @@
 /* Test of splitting a 'long double' into fraction and mantissa.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-printf-posix.c b/tests/test-printf-posix.c
index 23c4d4c4c2..eca31033f4 100644
--- a/tests/test-printf-posix.c
+++ b/tests/test-printf-posix.c
@@ -1,5 +1,5 @@
 /* Test of POSIX compatible printf() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-printf-posix.h b/tests/test-printf-posix.h
index 218618379c..14d0eb5524 100644
--- a/tests/test-printf-posix.h
+++ b/tests/test-printf-posix.h
@@ -1,5 +1,5 @@
 /* Test of POSIX compatible vsprintf() and sprintf() functions.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-printf-posix2.c b/tests/test-printf-posix2.c
index 2bab7f455e..d7e2183f2e 100644
--- a/tests/test-printf-posix2.c
+++ b/tests/test-printf-posix2.c
@@ -1,5 +1,5 @@
 /* Test of POSIX compatible printf() function.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-priv-set.c b/tests/test-priv-set.c
index b5a7edc152..32dad1983b 100644
--- a/tests/test-priv-set.c
+++ b/tests/test-priv-set.c
@@ -1,5 +1,5 @@
 /* Test the priv-set module.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-pselect.c b/tests/test-pselect.c
index 898578bebd..41468684c5 100644
--- a/tests/test-pselect.c
+++ b/tests/test-pselect.c
@@ -1,5 +1,5 @@
 /* Test of pselect() substitute.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-pthread-c++.cc b/tests/test-pthread-c++.cc
index 67ba6e2f61..5b439a8129 100644
--- a/tests/test-pthread-c++.cc
+++ b/tests/test-pthread-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <pthread.h> substitute in C++ mode.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-pthread-cond.c b/tests/test-pthread-cond.c
index b8419003cd..f45d8b69c8 100644
--- a/tests/test-pthread-cond.c
+++ b/tests/test-pthread-cond.c
@@ -1,5 +1,5 @@
 /* Test of condition variables in multithreaded situations.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-pthread-mutex.c b/tests/test-pthread-mutex.c
index f7e9431479..4f093eb25f 100644
--- a/tests/test-pthread-mutex.c
+++ b/tests/test-pthread-mutex.c
@@ -1,5 +1,5 @@
 /* Test of locking in multithreaded situations.
-   Copyright (C) 2005, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005, 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-pthread-once1.c b/tests/test-pthread-once1.c
index dc9b766576..922f6311d8 100644
--- a/tests/test-pthread-once1.c
+++ b/tests/test-pthread-once1.c
@@ -1,5 +1,5 @@
 /* Test of once-only execution in multithreaded situations.
-   Copyright (C) 2018-2022 Free Software Foundation, Inc.
+   Copyright (C) 2018-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-pthread-once2.c b/tests/test-pthread-once2.c
index 17749ac068..baa762f376 100644
--- a/tests/test-pthread-once2.c
+++ b/tests/test-pthread-once2.c
@@ -1,5 +1,5 @@
 /* Test of once-only execution in multithreaded situations.
-   Copyright (C) 2005, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005, 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-pthread-rwlock.c b/tests/test-pthread-rwlock.c
index bd8461bbdd..d4a59812ff 100644
--- a/tests/test-pthread-rwlock.c
+++ b/tests/test-pthread-rwlock.c
@@ -1,5 +1,5 @@
 /* Test of read-write locks in multithreaded situations.
-   Copyright (C) 2005, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005, 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-pthread-spin.c b/tests/test-pthread-spin.c
index 752504e026..ede62e33dd 100644
--- a/tests/test-pthread-spin.c
+++ b/tests/test-pthread-spin.c
@@ -1,5 +1,5 @@
 /* Test of POSIX spin locks.
-   Copyright (C) 2005, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005, 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-pthread-thread.c b/tests/test-pthread-thread.c
index 3c08084d72..5a5bce5691 100644
--- a/tests/test-pthread-thread.c
+++ b/tests/test-pthread-thread.c
@@ -1,5 +1,5 @@
 /* Test of pthread_create () function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-pthread-tss.c b/tests/test-pthread-tss.c
index 8c0230a364..513e142d51 100644
--- a/tests/test-pthread-tss.c
+++ b/tests/test-pthread-tss.c
@@ -1,5 +1,5 @@
 /* Test of thread-specific storage in multithreaded situations.
-   Copyright (C) 2005, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005, 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-pthread.c b/tests/test-pthread.c
index 2fef5924e8..0c6776210b 100644
--- a/tests/test-pthread.c
+++ b/tests/test-pthread.c
@@ -1,5 +1,5 @@
 /* Test of <pthread.h> substitute.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-pthread_sigmask1.c b/tests/test-pthread_sigmask1.c
index 0f87baed7c..b1b6eb5ab9 100644
--- a/tests/test-pthread_sigmask1.c
+++ b/tests/test-pthread_sigmask1.c
@@ -1,5 +1,5 @@
 /* Test of pthread_sigmask in a single-threaded program.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-pthread_sigmask2.c b/tests/test-pthread_sigmask2.c
index 20349fe0ef..94f951f323 100644
--- a/tests/test-pthread_sigmask2.c
+++ b/tests/test-pthread_sigmask2.c
@@ -1,5 +1,5 @@
 /* Test of pthread_sigmask in a multi-threaded program.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-ptsname.c b/tests/test-ptsname.c
index b300a03a26..142b6a0a1d 100644
--- a/tests/test-ptsname.c
+++ b/tests/test-ptsname.c
@@ -1,5 +1,5 @@
 /* Test of ptsname(3).
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-ptsname_r.c b/tests/test-ptsname_r.c
index 4987d17680..9806b53eb7 100644
--- a/tests/test-ptsname_r.c
+++ b/tests/test-ptsname_r.c
@@ -1,5 +1,5 @@
 /* Test of ptsname_r(3).
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-pty-c++.cc b/tests/test-pty-c++.cc
index e37e8fa0c0..5e6e1d4e8b 100644
--- a/tests/test-pty-c++.cc
+++ b/tests/test-pty-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <pty.h> substitute in C++ mode.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-pwrite.c b/tests/test-pwrite.c
index 80b562e725..3c275e4d4f 100644
--- a/tests/test-pwrite.c
+++ b/tests/test-pwrite.c
@@ -1,5 +1,5 @@
 /* Test the pwrite function.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-qsort_r.c b/tests/test-qsort_r.c
index e7b9ac4440..59449e1c11 100644
--- a/tests/test-qsort_r.c
+++ b/tests/test-qsort_r.c
@@ -1,6 +1,6 @@
 /* Test qsort_r.
 
-   Copyright 2014-2022 Free Software Foundation, Inc.
+   Copyright 2014-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-quotearg-simple.c b/tests/test-quotearg-simple.c
index 8999d04b41..896c4bfebd 100644
--- a/tests/test-quotearg-simple.c
+++ b/tests/test-quotearg-simple.c
@@ -1,5 +1,5 @@
 /* Test of quotearg family of functions.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-quotearg.c b/tests/test-quotearg.c
index a6c2c7a740..19c3d3659d 100644
--- a/tests/test-quotearg.c
+++ b/tests/test-quotearg.c
@@ -1,5 +1,5 @@
 /* Test of quotearg family of functions.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-quotearg.h b/tests/test-quotearg.h
index 5fc65e8884..4cd27761d2 100644
--- a/tests/test-quotearg.h
+++ b/tests/test-quotearg.h
@@ -1,5 +1,5 @@
 /* Test of quotearg family of functions.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-raise.c b/tests/test-raise.c
index b1a3c8a4ef..7574b2b4a4 100644
--- a/tests/test-raise.c
+++ b/tests/test-raise.c
@@ -1,5 +1,5 @@
 /* Test raising a signal.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-random.c b/tests/test-random.c
index c21bc6fc5e..c3346b028e 100644
--- a/tests/test-random.c
+++ b/tests/test-random.c
@@ -1,5 +1,5 @@
 /* Test random.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-random_r.c b/tests/test-random_r.c
index 2382d80320..dffa709f5e 100644
--- a/tests/test-random_r.c
+++ b/tests/test-random_r.c
@@ -1,5 +1,5 @@
 /* Test random_r.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-rawmemchr.c b/tests/test-rawmemchr.c
index 7f2949a238..c2f6416e26 100644
--- a/tests/test-rawmemchr.c
+++ b/tests/test-rawmemchr.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2008-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2008-2023 Free Software Foundation, Inc.
  * Written by Eric Blake and Bruno Haible
  *
  * This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-rbtree_list.c b/tests/test-rbtree_list.c
index 9fe28c3b87..d4cf04fcdb 100644
--- a/tests/test-rbtree_list.c
+++ b/tests/test-rbtree_list.c
@@ -1,5 +1,5 @@
 /* Test of sequential list data type implementation.
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-rbtree_omap.c b/tests/test-rbtree_omap.c
index b16da0b252..1c73419e3e 100644
--- a/tests/test-rbtree_omap.c
+++ b/tests/test-rbtree_omap.c
@@ -1,5 +1,5 @@
 /* Test of ordered map data type implementation.
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2018.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-rbtree_oset.c b/tests/test-rbtree_oset.c
index 93a8aea211..b5c82f3e15 100644
--- a/tests/test-rbtree_oset.c
+++ b/tests/test-rbtree_oset.c
@@ -1,5 +1,5 @@
 /* Test of ordered set data type implementation.
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-rbtreehash_list.c b/tests/test-rbtreehash_list.c
index cd520cc7cd..9fae29cb61 100644
--- a/tests/test-rbtreehash_list.c
+++ b/tests/test-rbtreehash_list.c
@@ -1,5 +1,5 @@
 /* Test of sequential list data type implementation.
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2006.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-read-file.c b/tests/test-read-file.c
index 79ee769f3e..fa7e31d8ef 100644
--- a/tests/test-read-file.c
+++ b/tests/test-read-file.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2006-2007, 2010-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2006-2007, 2010-2023 Free Software Foundation, Inc.
  * Written by Simon Josefsson
  *
  * This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-read.c b/tests/test-read.c
index cf238e0f7a..dc7bb3c751 100644
--- a/tests/test-read.c
+++ b/tests/test-read.c
@@ -1,5 +1,5 @@
 /* Test the read() function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-readlink.c b/tests/test-readlink.c
index a722e048aa..51f1fcb675 100644
--- a/tests/test-readlink.c
+++ b/tests/test-readlink.c
@@ -1,5 +1,5 @@
 /* Tests of readlink.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-readlink.h b/tests/test-readlink.h
index b457fa6a94..2c10dff4e9 100644
--- a/tests/test-readlink.h
+++ b/tests/test-readlink.h
@@ -1,5 +1,5 @@
 /* Tests of readlink.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-readlinkat.c b/tests/test-readlinkat.c
index c084f3ea32..5a18fa3642 100644
--- a/tests/test-readlinkat.c
+++ b/tests/test-readlinkat.c
@@ -1,5 +1,5 @@
 /* Tests of readlinkat.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-readtokens.c b/tests/test-readtokens.c
index 472dbe6ca0..44b90e9679 100644
--- a/tests/test-readtokens.c
+++ b/tests/test-readtokens.c
@@ -1,5 +1,5 @@
 /* Test the readtokens module.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-realloc-gnu.c b/tests/test-realloc-gnu.c
index c3bca67a26..28afc628de 100644
--- a/tests/test-realloc-gnu.c
+++ b/tests/test-realloc-gnu.c
@@ -1,5 +1,5 @@
 /* Test of realloc function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-reallocarray.c b/tests/test-reallocarray.c
index b830361d64..26a366a483 100644
--- a/tests/test-reallocarray.c
+++ b/tests/test-reallocarray.c
@@ -1,5 +1,5 @@
 /* Test of reallocarray function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-recv.c b/tests/test-recv.c
index 59bf5e28c4..e102a7d814 100644
--- a/tests/test-recv.c
+++ b/tests/test-recv.c
@@ -1,5 +1,5 @@
 /* Test the recv() function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-recvfrom.c b/tests/test-recvfrom.c
index 344e30f9a5..0d463879e9 100644
--- a/tests/test-recvfrom.c
+++ b/tests/test-recvfrom.c
@@ -1,5 +1,5 @@
 /* Test the recvfrom() function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-regex-quote.c b/tests/test-regex-quote.c
index 918ccd5901..9fe76634b6 100644
--- a/tests/test-regex-quote.c
+++ b/tests/test-regex-quote.c
@@ -1,5 +1,5 @@
 /* Test of constructing a regular expression from a literal string.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-regex.c b/tests/test-regex.c
index 22b6390418..aa85e81c56 100644
--- a/tests/test-regex.c
+++ b/tests/test-regex.c
@@ -1,5 +1,5 @@
 /* Test regular expressions
-   Copyright 1996-2001, 2003-2022 Free Software Foundation, Inc.
+   Copyright 1996-2001, 2003-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-remainder-ieee.c b/tests/test-remainder-ieee.c
index a27b9d0f51..80a0a0cc4f 100644
--- a/tests/test-remainder-ieee.c
+++ b/tests/test-remainder-ieee.c
@@ -1,5 +1,5 @@
 /* Test of remainder() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-remainder-ieee.h b/tests/test-remainder-ieee.h
index cc99609d5a..d121daa80b 100644
--- a/tests/test-remainder-ieee.h
+++ b/tests/test-remainder-ieee.h
@@ -1,5 +1,5 @@
 /* Test of remainder*() function family.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-remainder.c b/tests/test-remainder.c
index 7d88325395..dafed82123 100644
--- a/tests/test-remainder.c
+++ b/tests/test-remainder.c
@@ -1,5 +1,5 @@
 /* Test of remainder() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-remainder.h b/tests/test-remainder.h
index b8a7706520..2213a9306c 100644
--- a/tests/test-remainder.h
+++ b/tests/test-remainder.h
@@ -1,5 +1,5 @@
 /* Test of remainder*() function family.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-remainderf-ieee.c b/tests/test-remainderf-ieee.c
index 751d5ca22c..c7739cc6dc 100644
--- a/tests/test-remainderf-ieee.c
+++ b/tests/test-remainderf-ieee.c
@@ -1,5 +1,5 @@
 /* Test of remainderf() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-remainderf.c b/tests/test-remainderf.c
index e733c5e26f..b9319b9747 100644
--- a/tests/test-remainderf.c
+++ b/tests/test-remainderf.c
@@ -1,5 +1,5 @@
 /* Test of remainderf() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-remainderl-ieee.c b/tests/test-remainderl-ieee.c
index 84d9a3ecd3..056dab8992 100644
--- a/tests/test-remainderl-ieee.c
+++ b/tests/test-remainderl-ieee.c
@@ -1,5 +1,5 @@
 /* Test of remainderl() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-remainderl.c b/tests/test-remainderl.c
index 17ed3d63e9..2f2a90649a 100644
--- a/tests/test-remainderl.c
+++ b/tests/test-remainderl.c
@@ -1,5 +1,5 @@
 /* Test of remainderl() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-remove.c b/tests/test-remove.c
index 1ff17ad431..46704fb486 100644
--- a/tests/test-remove.c
+++ b/tests/test-remove.c
@@ -1,5 +1,5 @@
 /* Tests of remove.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-rename.c b/tests/test-rename.c
index a87c3fb3eb..a4ef861df8 100644
--- a/tests/test-rename.c
+++ b/tests/test-rename.c
@@ -1,5 +1,5 @@
 /* Test of rename() function.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-rename.h b/tests/test-rename.h
index 9845dcdeaf..0b8ed7255c 100644
--- a/tests/test-rename.h
+++ b/tests/test-rename.h
@@ -1,5 +1,5 @@
 /* Test of rename() function.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-renameat.c b/tests/test-renameat.c
index 8a5ce7c629..f5db8ce531 100644
--- a/tests/test-renameat.c
+++ b/tests/test-renameat.c
@@ -1,5 +1,5 @@
 /* Tests of renameat.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-renameatu.c b/tests/test-renameatu.c
index 1d8986ee40..634b37559c 100644
--- a/tests/test-renameatu.c
+++ b/tests/test-renameatu.c
@@ -1,5 +1,5 @@
 /* Test renameatu.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-rijndael.c b/tests/test-rijndael.c
index 5da6ab0407..b77ba66425 100644
--- a/tests/test-rijndael.c
+++ b/tests/test-rijndael.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2005, 2010-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2005, 2010-2023 Free Software Foundation, Inc.
  * Written by Simon Josefsson
  *
  * This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-rint-ieee.c b/tests/test-rint-ieee.c
index 650f918a16..e6c662b932 100644
--- a/tests/test-rint-ieee.c
+++ b/tests/test-rint-ieee.c
@@ -1,5 +1,5 @@
 /* Test of rint() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-rint-ieee.h b/tests/test-rint-ieee.h
index 74ec6ca0d1..8b9d13115c 100644
--- a/tests/test-rint-ieee.h
+++ b/tests/test-rint-ieee.h
@@ -1,5 +1,5 @@
 /* Test of rint*() function family.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-rint.c b/tests/test-rint.c
index 200e358672..e64159cc2c 100644
--- a/tests/test-rint.c
+++ b/tests/test-rint.c
@@ -1,5 +1,5 @@
 /* Test of rint() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-rint.h b/tests/test-rint.h
index c5c9c67722..f6d0c9c147 100644
--- a/tests/test-rint.h
+++ b/tests/test-rint.h
@@ -1,5 +1,5 @@
 /* Test of rint*() function family.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-rintf-ieee.c b/tests/test-rintf-ieee.c
index 5f4e1a57e3..3de922204b 100644
--- a/tests/test-rintf-ieee.c
+++ b/tests/test-rintf-ieee.c
@@ -1,5 +1,5 @@
 /* Test of rintf() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-rintf.c b/tests/test-rintf.c
index 4fb90ca6bb..c457756dc2 100644
--- a/tests/test-rintf.c
+++ b/tests/test-rintf.c
@@ -1,5 +1,5 @@
 /* Test of rintf() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-rintl-ieee.c b/tests/test-rintl-ieee.c
index be090e9a7e..2093e3372f 100644
--- a/tests/test-rintl-ieee.c
+++ b/tests/test-rintl-ieee.c
@@ -1,5 +1,5 @@
 /* Test of rintl() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-rintl.c b/tests/test-rintl.c
index 976e1f2a37..8dd2039c13 100644
--- a/tests/test-rintl.c
+++ b/tests/test-rintl.c
@@ -1,5 +1,5 @@
 /* Test of rintl() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-rmdir.c b/tests/test-rmdir.c
index deea6bdf81..bf56b64b5d 100644
--- a/tests/test-rmdir.c
+++ b/tests/test-rmdir.c
@@ -1,5 +1,5 @@
 /* Tests of rmdir.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-rmdir.h b/tests/test-rmdir.h
index 58885ca459..a490b8981d 100644
--- a/tests/test-rmdir.h
+++ b/tests/test-rmdir.h
@@ -1,5 +1,5 @@
 /* Tests of rmdir.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-round-ieee.c b/tests/test-round-ieee.c
index f99a77f7cc..17c41812b9 100644
--- a/tests/test-round-ieee.c
+++ b/tests/test-round-ieee.c
@@ -1,5 +1,5 @@
 /* Test of rounding to nearest, breaking ties away from zero.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-round1.c b/tests/test-round1.c
index d37b2e5230..b07b32785d 100644
--- a/tests/test-round1.c
+++ b/tests/test-round1.c
@@ -1,5 +1,5 @@
 /* Test of rounding to nearest, breaking ties away from zero.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-round2.c b/tests/test-round2.c
index 05600eab7c..19c84cc85a 100644
--- a/tests/test-round2.c
+++ b/tests/test-round2.c
@@ -1,5 +1,5 @@
 /* Test of rounding to nearest, breaking ties away from zero.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-roundf-ieee.c b/tests/test-roundf-ieee.c
index 7e613a6e25..0c0dee01cd 100644
--- a/tests/test-roundf-ieee.c
+++ b/tests/test-roundf-ieee.c
@@ -1,5 +1,5 @@
 /* Test of rounding to nearest, breaking ties away from zero.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-roundf1.c b/tests/test-roundf1.c
index d44005e946..afd10042e3 100644
--- a/tests/test-roundf1.c
+++ b/tests/test-roundf1.c
@@ -1,5 +1,5 @@
 /* Test of rounding to nearest, breaking ties away from zero.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-roundl-ieee.c b/tests/test-roundl-ieee.c
index 4194bcac81..c320082fcb 100644
--- a/tests/test-roundl-ieee.c
+++ b/tests/test-roundl-ieee.c
@@ -1,5 +1,5 @@
 /* Test of rounding to nearest, breaking ties away from zero.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-roundl.c b/tests/test-roundl.c
index ba8a2402f4..6dd01c546e 100644
--- a/tests/test-roundl.c
+++ b/tests/test-roundl.c
@@ -1,5 +1,5 @@
 /* Test of rounding to nearest, breaking ties away from zero.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-rwlock1.c b/tests/test-rwlock1.c
index a9c0aa53d7..a5675317d3 100644
--- a/tests/test-rwlock1.c
+++ b/tests/test-rwlock1.c
@@ -1,5 +1,5 @@
 /* Test of glthread_rwlock_rdlock function.
-   Copyright (C) 2017-2022 Free Software Foundation, Inc.
+   Copyright (C) 2017-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-safe-alloc.c b/tests/test-safe-alloc.c
index 1c58996870..f713b54339 100644
--- a/tests/test-safe-alloc.c
+++ b/tests/test-safe-alloc.c
@@ -1,7 +1,7 @@
 /*
  * Test the safe-alloc macros
  *
- * Copyright (C) 2009-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2009-2023 Free Software Foundation, Inc.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
diff --git a/tests/test-sameacls.c b/tests/test-sameacls.c
index a0ea1b0b11..6d2212cf98 100644
--- a/tests/test-sameacls.c
+++ b/tests/test-sameacls.c
@@ -1,5 +1,5 @@
 /* Test whether two files have the same ACLs.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sched-c++.cc b/tests/test-sched-c++.cc
index 7ba8aaac06..ea2b87f337 100644
--- a/tests/test-sched-c++.cc
+++ b/tests/test-sched-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <sched.h> substitute in C++ mode.
-   Copyright (C) 2022 Free Software Foundation, Inc.
+   Copyright (C) 2022-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sched.c b/tests/test-sched.c
index 1326815b94..b379714cdb 100644
--- a/tests/test-sched.c
+++ b/tests/test-sched.c
@@ -1,5 +1,5 @@
 /* Test of <sched.h> substitute.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-scratch-buffer.c b/tests/test-scratch-buffer.c
index 3e9587fcf4..e2a14c492a 100644
--- a/tests/test-scratch-buffer.c
+++ b/tests/test-scratch-buffer.c
@@ -1,5 +1,5 @@
 /* Test of scratch_buffer functions.
-   Copyright (C) 2018-2022 Free Software Foundation, Inc.
+   Copyright (C) 2018-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-search-c++.cc b/tests/test-search-c++.cc
index 3e4f1cb4ea..91c9f9a31e 100644
--- a/tests/test-search-c++.cc
+++ b/tests/test-search-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <search.h> substitute in C++ mode.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-search.c b/tests/test-search.c
index e5d71d29d3..639b131573 100644
--- a/tests/test-search.c
+++ b/tests/test-search.c
@@ -1,5 +1,5 @@
 /* Test of <search.h> substitute.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-select-fd.c b/tests/test-select-fd.c
index 90699867cf..c99e5bba3f 100644
--- a/tests/test-select-fd.c
+++ b/tests/test-select-fd.c
@@ -1,5 +1,5 @@
 /* Test of select() substitute, reading or writing from a given file 
descriptor.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-select-stdin.c b/tests/test-select-stdin.c
index bf7e82b3e9..1182391060 100644
--- a/tests/test-select-stdin.c
+++ b/tests/test-select-stdin.c
@@ -1,5 +1,5 @@
 /* Test of select() substitute, reading from stdin.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-select.c b/tests/test-select.c
index 7cca5517a2..d04be58418 100644
--- a/tests/test-select.c
+++ b/tests/test-select.c
@@ -1,5 +1,5 @@
 /* Test of select() substitute.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-select.h b/tests/test-select.h
index 86a79ad83a..afa996f40c 100644
--- a/tests/test-select.h
+++ b/tests/test-select.h
@@ -1,5 +1,5 @@
 /* Test of select() substitute.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-send.c b/tests/test-send.c
index 6490afee82..89b54607aa 100644
--- a/tests/test-send.c
+++ b/tests/test-send.c
@@ -1,5 +1,5 @@
 /* Test the send() function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sendto.c b/tests/test-sendto.c
index 97b38a8ede..4cb1f2e319 100644
--- a/tests/test-sendto.c
+++ b/tests/test-sendto.c
@@ -1,5 +1,5 @@
 /* Test the sendto() function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-set-c++.cc b/tests/test-set-c++.cc
index bc7428256b..0efbf49978 100644
--- a/tests/test-set-c++.cc
+++ b/tests/test-set-c++.cc
@@ -1,5 +1,5 @@
 /* Test of set data type implementation as a C++ class.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2020.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-set-mode-acl.c b/tests/test-set-mode-acl.c
index 279a66fd2b..6c112db067 100644
--- a/tests/test-set-mode-acl.c
+++ b/tests/test-set-mode-acl.c
@@ -1,5 +1,5 @@
 /* Test of setting an ACL equivalent to a mode.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-setenv.c b/tests/test-setenv.c
index 2362c2e14f..422d9b76b3 100644
--- a/tests/test-setenv.c
+++ b/tests/test-setenv.c
@@ -1,5 +1,5 @@
 /* Tests of setenv.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sethostname1.c b/tests/test-sethostname1.c
index a577ce258d..f3fa7cb89f 100644
--- a/tests/test-sethostname1.c
+++ b/tests/test-sethostname1.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2011-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2011-2023 Free Software Foundation, Inc.
  * Written by Ben Walton.
  *
  * This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-sethostname2.c b/tests/test-sethostname2.c
index a0266acd48..08dd0ac033 100644
--- a/tests/test-sethostname2.c
+++ b/tests/test-sethostname2.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2011-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2011-2023 Free Software Foundation, Inc.
  * Written by Ben Walton.
  *
  * This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-setlocale1.c b/tests/test-setlocale1.c
index 6e50e65719..7376258e3e 100644
--- a/tests/test-setlocale1.c
+++ b/tests/test-setlocale1.c
@@ -1,5 +1,5 @@
 /* Test of setting the current locale.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-setlocale2.c b/tests/test-setlocale2.c
index 905c1939e2..ae78604f59 100644
--- a/tests/test-setlocale2.c
+++ b/tests/test-setlocale2.c
@@ -1,5 +1,5 @@
 /* Test of setting the current locale.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-setlocale_null-mt-all.c 
b/tests/test-setlocale_null-mt-all.c
index 2739f111bb..6036c260cd 100644
--- a/tests/test-setlocale_null-mt-all.c
+++ b/tests/test-setlocale_null-mt-all.c
@@ -1,5 +1,5 @@
 /* Multithread-safety test for setlocale_null_r (LC_ALL, ...).
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-setlocale_null-mt-one.c 
b/tests/test-setlocale_null-mt-one.c
index 9320efd66b..4829082ab5 100644
--- a/tests/test-setlocale_null-mt-one.c
+++ b/tests/test-setlocale_null-mt-one.c
@@ -1,5 +1,5 @@
 /* Multithread-safety test for setlocale_null_r (LC_xxx, ...).
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-setlocale_null.c b/tests/test-setlocale_null.c
index 9b8a663a92..73cbc3c095 100644
--- a/tests/test-setlocale_null.c
+++ b/tests/test-setlocale_null.c
@@ -1,5 +1,5 @@
 /* Test of setlocale_null_r function.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-setsockopt.c b/tests/test-setsockopt.c
index 0337684804..0543e39cd4 100644
--- a/tests/test-setsockopt.c
+++ b/tests/test-setsockopt.c
@@ -1,5 +1,5 @@
 /* Test setsockopt() function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sh-quote.c b/tests/test-sh-quote.c
index d1ba4d5611..19b28ad10b 100644
--- a/tests/test-sh-quote.c
+++ b/tests/test-sh-quote.c
@@ -1,5 +1,5 @@
 /* Test of sh-quote module.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sha1-buffer.c b/tests/test-sha1-buffer.c
index 58fd486527..cd2f2a6748 100644
--- a/tests/test-sha1-buffer.c
+++ b/tests/test-sha1-buffer.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2005, 2008-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2005, 2008-2023 Free Software Foundation, Inc.
  * Written by Simon Josefsson
  *
  * This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-sha1-stream.c b/tests/test-sha1-stream.c
index 91c7ec0068..0c72ee4c98 100644
--- a/tests/test-sha1-stream.c
+++ b/tests/test-sha1-stream.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2005, 2008-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2005, 2008-2023 Free Software Foundation, Inc.
  * Written by Simon Josefsson
  *
  * This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-sha256-stream.c b/tests/test-sha256-stream.c
index 5537e479db..949316e303 100644
--- a/tests/test-sha256-stream.c
+++ b/tests/test-sha256-stream.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2018-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2018-2023 Free Software Foundation, Inc.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sha512-stream.c b/tests/test-sha512-stream.c
index e43009fe0a..88eb5ef69a 100644
--- a/tests/test-sha512-stream.c
+++ b/tests/test-sha512-stream.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2018-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2018-2023 Free Software Foundation, Inc.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/tests/test-shutdown.c b/tests/test-shutdown.c
index ff4bddff0c..d9cfda3e2e 100644
--- a/tests/test-shutdown.c
+++ b/tests/test-shutdown.c
@@ -1,5 +1,5 @@
 /* Test the shutdown() function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sigabbrev_np.c b/tests/test-sigabbrev_np.c
index e35db0a120..dfec85ae7a 100644
--- a/tests/test-sigabbrev_np.c
+++ b/tests/test-sigabbrev_np.c
@@ -1,6 +1,6 @@
 /* Test of sigabbrev_np() function.
 
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sigaction.c b/tests/test-sigaction.c
index 7d10de229b..26350f9969 100644
--- a/tests/test-sigaction.c
+++ b/tests/test-sigaction.c
@@ -1,5 +1,5 @@
 /* Test of sigaction() function.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sigdescr_np.c b/tests/test-sigdescr_np.c
index 243f4aac66..741fcb3f3a 100644
--- a/tests/test-sigdescr_np.c
+++ b/tests/test-sigdescr_np.c
@@ -1,6 +1,6 @@
 /* Test of sigdescr_np() function.
 
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-signal-h-c++.cc b/tests/test-signal-h-c++.cc
index edac000474..6ed6a64078 100644
--- a/tests/test-signal-h-c++.cc
+++ b/tests/test-signal-h-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <signal.h> substitute in C++ mode.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-signal-h-c++2.cc b/tests/test-signal-h-c++2.cc
index 4c898c566b..e9ea8d4432 100644
--- a/tests/test-signal-h-c++2.cc
+++ b/tests/test-signal-h-c++2.cc
@@ -1,5 +1,5 @@
 /* Test of <signal.h> substitute in C++ mode.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-signal-h.c b/tests/test-signal-h.c
index 06c972743c..05ec06c2d2 100644
--- a/tests/test-signal-h.c
+++ b/tests/test-signal-h.c
@@ -1,5 +1,5 @@
 /* Test of <signal.h> substitute.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-signbit.c b/tests/test-signbit.c
index d1305ce052..49083c2c9a 100644
--- a/tests/test-signbit.c
+++ b/tests/test-signbit.c
@@ -1,5 +1,5 @@
 /* Test of signbit() substitute.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sigpipe.c b/tests/test-sigpipe.c
index 2d7b13c012..8a02f0c048 100644
--- a/tests/test-sigpipe.c
+++ b/tests/test-sigpipe.c
@@ -1,5 +1,5 @@
 /* Test of SIGPIPE handling.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sigprocmask.c b/tests/test-sigprocmask.c
index 574bc82e1a..b6d0114c8b 100644
--- a/tests/test-sigprocmask.c
+++ b/tests/test-sigprocmask.c
@@ -1,5 +1,5 @@
 /* Test of sigprocmask.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sigsegv-catch-segv1.c b/tests/test-sigsegv-catch-segv1.c
index a682a2ac11..55effac67c 100644
--- a/tests/test-sigsegv-catch-segv1.c
+++ b/tests/test-sigsegv-catch-segv1.c
@@ -1,5 +1,5 @@
 /* Test that the handler is called, with the right fault address.
-   Copyright (C) 2002-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sigsegv-catch-segv2.c b/tests/test-sigsegv-catch-segv2.c
index 28cc4ec089..1628f1a0de 100644
--- a/tests/test-sigsegv-catch-segv2.c
+++ b/tests/test-sigsegv-catch-segv2.c
@@ -1,5 +1,5 @@
 /* Test that the handler can be exited multiple times.
-   Copyright (C) 2002-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sigsegv-catch-stackoverflow1.c 
b/tests/test-sigsegv-catch-stackoverflow1.c
index bb25e2aeea..0c4f1d495a 100644
--- a/tests/test-sigsegv-catch-stackoverflow1.c
+++ b/tests/test-sigsegv-catch-stackoverflow1.c
@@ -1,5 +1,5 @@
 /* Test the stack overflow handler.
-   Copyright (C) 2002-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sigsegv-catch-stackoverflow2.c 
b/tests/test-sigsegv-catch-stackoverflow2.c
index 4cfd58b814..73309386aa 100644
--- a/tests/test-sigsegv-catch-stackoverflow2.c
+++ b/tests/test-sigsegv-catch-stackoverflow2.c
@@ -1,5 +1,5 @@
 /* Test that stack overflow and SIGSEGV are correctly distinguished.
-   Copyright (C) 2002-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-simple-atomic.c b/tests/test-simple-atomic.c
index ac865ce96f..e6d45ac775 100644
--- a/tests/test-simple-atomic.c
+++ b/tests/test-simple-atomic.c
@@ -1,5 +1,5 @@
 /* Test of simple atomic operations for multithreading.
-   Copyright (C) 2021-2022 Free Software Foundation, Inc.
+   Copyright (C) 2021-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sin.c b/tests/test-sin.c
index aa62105711..b6c8442540 100644
--- a/tests/test-sin.c
+++ b/tests/test-sin.c
@@ -1,5 +1,5 @@
 /* Test of sin() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sinf.c b/tests/test-sinf.c
index 620309768f..507f317ef8 100644
--- a/tests/test-sinf.c
+++ b/tests/test-sinf.c
@@ -1,5 +1,5 @@
 /* Test of sinf() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sinh.c b/tests/test-sinh.c
index b8e4e3bad4..53c5d0bdcc 100644
--- a/tests/test-sinh.c
+++ b/tests/test-sinh.c
@@ -1,5 +1,5 @@
 /* Test of sinh() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sinhf.c b/tests/test-sinhf.c
index 4ae46481ed..b32ac76393 100644
--- a/tests/test-sinhf.c
+++ b/tests/test-sinhf.c
@@ -1,5 +1,5 @@
 /* Test of sinhf() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sinl.c b/tests/test-sinl.c
index 7bc59debe0..7579ad7be4 100644
--- a/tests/test-sinl.c
+++ b/tests/test-sinl.c
@@ -1,5 +1,5 @@
 /* Test of sinl() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sleep.c b/tests/test-sleep.c
index 37af352579..391c49052b 100644
--- a/tests/test-sleep.c
+++ b/tests/test-sleep.c
@@ -1,5 +1,5 @@
 /* Test of sleep() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sm3-buffer.c b/tests/test-sm3-buffer.c
index 0d4cd8264d..7fa89e0379 100644
--- a/tests/test-sm3-buffer.c
+++ b/tests/test-sm3-buffer.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2017-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2017-2023 Free Software Foundation, Inc.
  * Written by Jia Zhang <qianyue.zj@alibaba-inc.com>
  *
  * This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-snprintf-posix.c b/tests/test-snprintf-posix.c
index 02dce7a791..d8d89fcd05 100644
--- a/tests/test-snprintf-posix.c
+++ b/tests/test-snprintf-posix.c
@@ -1,5 +1,5 @@
 /* Test of POSIX compatible snprintf() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-snprintf-posix.h b/tests/test-snprintf-posix.h
index 822befb11d..a69abb5622 100644
--- a/tests/test-snprintf-posix.h
+++ b/tests/test-snprintf-posix.h
@@ -1,5 +1,5 @@
 /* Test of POSIX compatible vsnprintf() and snprintf() functions.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-snprintf.c b/tests/test-snprintf.c
index 526fd29972..d106ad65dd 100644
--- a/tests/test-snprintf.c
+++ b/tests/test-snprintf.c
@@ -1,5 +1,5 @@
 /* Test of snprintf() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sockets.c b/tests/test-sockets.c
index 714da6c007..9293b7cdaa 100644
--- a/tests/test-sockets.c
+++ b/tests/test-sockets.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2008-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2008-2023 Free Software Foundation, Inc.
  * Written by Simon Josefsson.
  *
  * This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-spawn-c++.cc b/tests/test-spawn-c++.cc
index 0eca5f64ce..b67699dd6d 100644
--- a/tests/test-spawn-c++.cc
+++ b/tests/test-spawn-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <spawn.h> substitute in C++ mode.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-spawn-pipe-child.c b/tests/test-spawn-pipe-child.c
index 9dac7f7560..071beb320f 100644
--- a/tests/test-spawn-pipe-child.c
+++ b/tests/test-spawn-pipe-child.c
@@ -1,5 +1,5 @@
 /* Child program invoked by test-spawn-pipe-main.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-spawn-pipe-main.c b/tests/test-spawn-pipe-main.c
index 91dc0722d2..688c9a5bfa 100644
--- a/tests/test-spawn-pipe-main.c
+++ b/tests/test-spawn-pipe-main.c
@@ -1,5 +1,5 @@
 /* Test of create_pipe_bidi/wait_subprocess.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-spawn-pipe-script.c b/tests/test-spawn-pipe-script.c
index 5d574bf5cc..ddc6780999 100644
--- a/tests/test-spawn-pipe-script.c
+++ b/tests/test-spawn-pipe-script.c
@@ -1,5 +1,5 @@
 /* Test of create_pipe_in/wait_subprocess.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-spawn.c b/tests/test-spawn.c
index 80686aa0be..a6dd72b115 100644
--- a/tests/test-spawn.c
+++ b/tests/test-spawn.c
@@ -1,5 +1,5 @@
 /* Test of <spawn.h> substitute.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sprintf-posix.c b/tests/test-sprintf-posix.c
index c153ecf18d..9404a6fc99 100644
--- a/tests/test-sprintf-posix.c
+++ b/tests/test-sprintf-posix.c
@@ -1,5 +1,5 @@
 /* Test of POSIX compatible sprintf() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sprintf-posix.h b/tests/test-sprintf-posix.h
index cd5cf0989d..62d2b4ed56 100644
--- a/tests/test-sprintf-posix.h
+++ b/tests/test-sprintf-posix.h
@@ -1,5 +1,5 @@
 /* Test of POSIX compatible vsprintf() and sprintf() functions.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sqrt-ieee.c b/tests/test-sqrt-ieee.c
index 6bce031649..0ff9e68607 100644
--- a/tests/test-sqrt-ieee.c
+++ b/tests/test-sqrt-ieee.c
@@ -1,5 +1,5 @@
 /* Test of sqrt() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sqrt-ieee.h b/tests/test-sqrt-ieee.h
index a78832f90f..0ae68f87a8 100644
--- a/tests/test-sqrt-ieee.h
+++ b/tests/test-sqrt-ieee.h
@@ -1,5 +1,5 @@
 /* Test of sqrt*() function family.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sqrt.c b/tests/test-sqrt.c
index 20daeb39fd..e17be5a2bb 100644
--- a/tests/test-sqrt.c
+++ b/tests/test-sqrt.c
@@ -1,5 +1,5 @@
 /* Test of sqrt() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sqrt.h b/tests/test-sqrt.h
index 50ba62665b..9b987e3f72 100644
--- a/tests/test-sqrt.h
+++ b/tests/test-sqrt.h
@@ -1,5 +1,5 @@
 /* Test of sqrt*() function family.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sqrtf-ieee.c b/tests/test-sqrtf-ieee.c
index 4d58ac6a20..bfd99a6dfd 100644
--- a/tests/test-sqrtf-ieee.c
+++ b/tests/test-sqrtf-ieee.c
@@ -1,5 +1,5 @@
 /* Test of sqrtf() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sqrtf.c b/tests/test-sqrtf.c
index bd9636bfcc..896def93d3 100644
--- a/tests/test-sqrtf.c
+++ b/tests/test-sqrtf.c
@@ -1,5 +1,5 @@
 /* Test of sqrtf() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sqrtl-ieee.c b/tests/test-sqrtl-ieee.c
index 64e5fefb1a..afc82b6fc4 100644
--- a/tests/test-sqrtl-ieee.c
+++ b/tests/test-sqrtl-ieee.c
@@ -1,5 +1,5 @@
 /* Test of sqrtl() function.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sqrtl.c b/tests/test-sqrtl.c
index cd63b3086a..6c937459ca 100644
--- a/tests/test-sqrtl.c
+++ b/tests/test-sqrtl.c
@@ -1,5 +1,5 @@
 /* Test of sqrtl() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-ssfmalloc.c b/tests/test-ssfmalloc.c
index dcef94c9d0..ff1d74122d 100644
--- a/tests/test-ssfmalloc.c
+++ b/tests/test-ssfmalloc.c
@@ -1,5 +1,5 @@
 /* Test of simple and straight-forward malloc implementation.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-stack.c b/tests/test-stack.c
index 3f4ac4b184..ae72bb4077 100644
--- a/tests/test-stack.c
+++ b/tests/test-stack.c
@@ -1,5 +1,5 @@
 /* Test of the type-safe stack data type.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-stat-time.c b/tests/test-stat-time.c
index 7e961f2ff6..f20f5e2f9f 100644
--- a/tests/test-stat-time.c
+++ b/tests/test-stat-time.c
@@ -1,5 +1,5 @@
 /* Test of <stat-time.h>.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-stat.c b/tests/test-stat.c
index c8a4b98454..47fe8942bd 100644
--- a/tests/test-stat.c
+++ b/tests/test-stat.c
@@ -1,5 +1,5 @@
 /* Tests of stat.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-stat.h b/tests/test-stat.h
index 82f889708c..f2132c2a35 100644
--- a/tests/test-stat.h
+++ b/tests/test-stat.h
@@ -1,5 +1,5 @@
 /* Tests of stat.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-statat.c b/tests/test-statat.c
index f46c3f58b5..8390339403 100644
--- a/tests/test-statat.c
+++ b/tests/test-statat.c
@@ -1,5 +1,5 @@
 /* Tests of statat and lstatat.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-stdalign-c++.cc b/tests/test-stdalign-c++.cc
index 598b3c1da4..8ee5fcdb7e 100644
--- a/tests/test-stdalign-c++.cc
+++ b/tests/test-stdalign-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <stdalign.h> substitute in C++ mode.
-   Copyright (C) 2022 Free Software Foundation, Inc.
+   Copyright (C) 2022-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-stdalign.c b/tests/test-stdalign.c
index a935554563..c974ca8371 100644
--- a/tests/test-stdalign.c
+++ b/tests/test-stdalign.c
@@ -1,5 +1,5 @@
 /* Test of <stdalign.h>.
-   Copyright 2009-2022 Free Software Foundation, Inc.
+   Copyright 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-stdarg-c++.cc b/tests/test-stdarg-c++.cc
index de8c2bd509..d4ef971387 100644
--- a/tests/test-stdarg-c++.cc
+++ b/tests/test-stdarg-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <stdarg.h> substitute in C++ mode.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-stdarg-c++2.cc b/tests/test-stdarg-c++2.cc
index e0b36f7810..a617e406bf 100644
--- a/tests/test-stdarg-c++2.cc
+++ b/tests/test-stdarg-c++2.cc
@@ -1,5 +1,5 @@
 /* Test of <stdarg.h> substitute in C++ mode.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-stdbool-c++.cc b/tests/test-stdbool-c++.cc
index 98358f1ef8..b670737745 100644
--- a/tests/test-stdbool-c++.cc
+++ b/tests/test-stdbool-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <stdbool.h> substitute in C++ mode.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-stdbool-c++2.cc b/tests/test-stdbool-c++2.cc
index 551cbb67a0..e25028a789 100644
--- a/tests/test-stdbool-c++2.cc
+++ b/tests/test-stdbool-c++2.cc
@@ -1,5 +1,5 @@
 /* Test of <stdbool.h> substitute in C++ mode.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-stdbool.c b/tests/test-stdbool.c
index 923a2cd302..6ca9535e87 100644
--- a/tests/test-stdbool.c
+++ b/tests/test-stdbool.c
@@ -1,5 +1,5 @@
 /* Test bool.
-   Copyright (C) 2002-2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2002-2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-stdckdint-c++.cc b/tests/test-stdckdint-c++.cc
index 8be05bad10..9618c32541 100644
--- a/tests/test-stdckdint-c++.cc
+++ b/tests/test-stdckdint-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <stdckdint.h> substitute in C++ mode.
-   Copyright (C) 2022 Free Software Foundation, Inc.
+   Copyright (C) 2022-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-stdckdint.c b/tests/test-stdckdint.c
index c19525518c..43d5e809af 100644
--- a/tests/test-stdckdint.c
+++ b/tests/test-stdckdint.c
@@ -1,5 +1,5 @@
 /* Test <stdckdint.h>.
-   Copyright 2022 Free Software Foundation, Inc.
+   Copyright 2022-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-stddef-c++.cc b/tests/test-stddef-c++.cc
index 02183903a5..7d25b3d4b2 100644
--- a/tests/test-stddef-c++.cc
+++ b/tests/test-stddef-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <stddef.h> substitute in C++ mode.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-stddef-c++2.cc b/tests/test-stddef-c++2.cc
index defad445d2..68a8c7df36 100644
--- a/tests/test-stddef-c++2.cc
+++ b/tests/test-stddef-c++2.cc
@@ -1,5 +1,5 @@
 /* Test of <stddef.h> substitute in C++ mode.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-stddef.c b/tests/test-stddef.c
index 470c7a6bc1..25ad00e490 100644
--- a/tests/test-stddef.c
+++ b/tests/test-stddef.c
@@ -1,5 +1,5 @@
 /* Test of <stddef.h> substitute.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-stdint-c++.cc b/tests/test-stdint-c++.cc
index 1fc59f9a87..39601fd4d1 100644
--- a/tests/test-stdint-c++.cc
+++ b/tests/test-stdint-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <stdint.h> substitute in C++ mode.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-stdint-c++2.cc b/tests/test-stdint-c++2.cc
index 3f4ef7c928..47aed93858 100644
--- a/tests/test-stdint-c++2.cc
+++ b/tests/test-stdint-c++2.cc
@@ -1,5 +1,5 @@
 /* Test of <stdint.h> substitute in C++ mode.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-stdint.c b/tests/test-stdint.c
index 7d71f687df..a34c33f104 100644
--- a/tests/test-stdint.c
+++ b/tests/test-stdint.c
@@ -1,5 +1,5 @@
 /* Test of <stdint.h> substitute.
-   Copyright (C) 2006-2022 Free Software Foundation, Inc.
+   Copyright (C) 2006-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-stdio-c++.cc b/tests/test-stdio-c++.cc
index e61f63537b..9fad3c5ac4 100644
--- a/tests/test-stdio-c++.cc
+++ b/tests/test-stdio-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <stdio.h> substitute in C++ mode.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-stdio-c++2.cc b/tests/test-stdio-c++2.cc
index e4aab0121c..fc164addbd 100644
--- a/tests/test-stdio-c++2.cc
+++ b/tests/test-stdio-c++2.cc
@@ -1,5 +1,5 @@
 /* Test of <stdio.h> substitute in C++ mode.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-stdio.c b/tests/test-stdio.c
index 1908da358a..a3b0a3e2ba 100644
--- a/tests/test-stdio.c
+++ b/tests/test-stdio.c
@@ -1,5 +1,5 @@
 /* Test of <stdio.h> substitute.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-stdlib-c++.cc b/tests/test-stdlib-c++.cc
index 059d1c8854..184437c5fd 100644
--- a/tests/test-stdlib-c++.cc
+++ b/tests/test-stdlib-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <stdlib.h> substitute in C++ mode.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-stdlib-c++2.cc b/tests/test-stdlib-c++2.cc
index c99059d095..72cd8a1336 100644
--- a/tests/test-stdlib-c++2.cc
+++ b/tests/test-stdlib-c++2.cc
@@ -1,5 +1,5 @@
 /* Test of <stdlib.h> substitute in C++ mode.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-stdlib.c b/tests/test-stdlib.c
index 4fdafc9946..ceccd4d233 100644
--- a/tests/test-stdlib.c
+++ b/tests/test-stdlib.c
@@ -1,5 +1,5 @@
 /* Test of <stdlib.h> substitute.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-stdnoreturn.c b/tests/test-stdnoreturn.c
index a4df24c4c6..324a39b608 100644
--- a/tests/test-stdnoreturn.c
+++ b/tests/test-stdnoreturn.c
@@ -1,5 +1,5 @@
 /* Test of <stdnoreturn.h>.
-   Copyright 2012-2022 Free Software Foundation, Inc.
+   Copyright 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-stpncpy.c b/tests/test-stpncpy.c
index 74e8be9217..8c95b0a94f 100644
--- a/tests/test-stpncpy.c
+++ b/tests/test-stpncpy.c
@@ -1,5 +1,5 @@
 /* Test the system defined function stpncpy().
-   Copyright (C) 2003, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2003, 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-strcasestr.c b/tests/test-strcasestr.c
index 9395aa9fd2..192e1569f8 100644
--- a/tests/test-strcasestr.c
+++ b/tests/test-strcasestr.c
@@ -1,5 +1,5 @@
 /* Test of case-insensitive searching in a string.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-strchrnul.c b/tests/test-strchrnul.c
index 2f544ecbf5..eeb5080eca 100644
--- a/tests/test-strchrnul.c
+++ b/tests/test-strchrnul.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2008-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2008-2023 Free Software Foundation, Inc.
  * Written by Eric Blake and Bruno Haible
  *
  * This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-strerror.c b/tests/test-strerror.c
index b9ec040abb..d23e982c5d 100644
--- a/tests/test-strerror.c
+++ b/tests/test-strerror.c
@@ -1,5 +1,5 @@
 /* Test of strerror() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-strerror_r.c b/tests/test-strerror_r.c
index 916ce3fc23..7ad4424320 100644
--- a/tests/test-strerror_r.c
+++ b/tests/test-strerror_r.c
@@ -1,5 +1,5 @@
 /* Test of strerror_r() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-strerrorname_np.c b/tests/test-strerrorname_np.c
index d08da239fe..ae2291fd97 100644
--- a/tests/test-strerrorname_np.c
+++ b/tests/test-strerrorname_np.c
@@ -1,6 +1,6 @@
 /* Test of strerrorname_np() function.
 
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-strfmon_l.c b/tests/test-strfmon_l.c
index c37fcb60cc..245f04c2b5 100644
--- a/tests/test-strfmon_l.c
+++ b/tests/test-strfmon_l.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2017-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2017-2023 Free Software Foundation, Inc.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/tests/test-striconv.c b/tests/test-striconv.c
index a0030016b3..461886eb65 100644
--- a/tests/test-striconv.c
+++ b/tests/test-striconv.c
@@ -1,5 +1,5 @@
 /* Test of character set conversion.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-striconveh.c b/tests/test-striconveh.c
index 15627f3d0b..2f769fc234 100644
--- a/tests/test-striconveh.c
+++ b/tests/test-striconveh.c
@@ -1,5 +1,5 @@
 /* Test of character set conversion with error handling.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-striconveha.c b/tests/test-striconveha.c
index 6f6e884357..a3fb06c41e 100644
--- a/tests/test-striconveha.c
+++ b/tests/test-striconveha.c
@@ -1,5 +1,5 @@
 /* Test of character set conversion with error handling and autodetection.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-string-buffer.c b/tests/test-string-buffer.c
index 8a156afe1a..3d26ad25b9 100644
--- a/tests/test-string-buffer.c
+++ b/tests/test-string-buffer.c
@@ -1,5 +1,5 @@
 /* Test of buffer that accumulates a string by piecewise concatenation.
-   Copyright (C) 2021-2022 Free Software Foundation, Inc.
+   Copyright (C) 2021-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-string-c++.cc b/tests/test-string-c++.cc
index e062b6bea3..11e15ed8d4 100644
--- a/tests/test-string-c++.cc
+++ b/tests/test-string-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <string.h> substitute in C++ mode.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-string-c++2.cc b/tests/test-string-c++2.cc
index d8617533cf..db309af3ff 100644
--- a/tests/test-string-c++2.cc
+++ b/tests/test-string-c++2.cc
@@ -1,5 +1,5 @@
 /* Test of <string.h> substitute in C++ mode.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-string.c b/tests/test-string.c
index 94688726dd..054d7dd293 100644
--- a/tests/test-string.c
+++ b/tests/test-string.c
@@ -1,5 +1,5 @@
 /* Test of <string.h> substitute.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-strings-c++.cc b/tests/test-strings-c++.cc
index 5c017e3f08..5598113df2 100644
--- a/tests/test-strings-c++.cc
+++ b/tests/test-strings-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <strings.h> substitute in C++ mode.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-strings.c b/tests/test-strings.c
index 95f33e895c..410421639a 100644
--- a/tests/test-strings.c
+++ b/tests/test-strings.c
@@ -1,5 +1,5 @@
 /* Test of <strings.h> substitute.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-strncat.c b/tests/test-strncat.c
index c25890cb08..616a336da1 100644
--- a/tests/test-strncat.c
+++ b/tests/test-strncat.c
@@ -1,5 +1,5 @@
 /* Test of strncat() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-strnlen.c b/tests/test-strnlen.c
index e77fb2799e..2102d74882 100644
--- a/tests/test-strnlen.c
+++ b/tests/test-strnlen.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2010-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2010-2023 Free Software Foundation, Inc.
  * Written by Eric Blake
  *
  * This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-strsignal.c b/tests/test-strsignal.c
index 408f841f63..8a905bd82d 100644
--- a/tests/test-strsignal.c
+++ b/tests/test-strsignal.c
@@ -1,5 +1,5 @@
 /* Test of strsignal() function.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-strstr.c b/tests/test-strstr.c
index f59dda6704..b2e00c526c 100644
--- a/tests/test-strstr.c
+++ b/tests/test-strstr.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2004, 2007-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2004, 2007-2023 Free Software Foundation, Inc.
  * Written by Bruno Haible and Eric Blake
  *
  * This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-strtod.c b/tests/test-strtod.c
index 80ddeb5f4d..d764ebb73f 100644
--- a/tests/test-strtod.c
+++ b/tests/test-strtod.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2008-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2008-2023 Free Software Foundation, Inc.
  * Written by Eric Blake
  *
  * This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-strtod1.c b/tests/test-strtod1.c
index 3db6f7a76e..75f9f936f1 100644
--- a/tests/test-strtod1.c
+++ b/tests/test-strtod1.c
@@ -1,5 +1,5 @@
 /* Test of strtod() in a French locale.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-strtoimax.c b/tests/test-strtoimax.c
index a6886fe0cf..7d770b5c58 100644
--- a/tests/test-strtoimax.c
+++ b/tests/test-strtoimax.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2011-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2011-2023 Free Software Foundation, Inc.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/tests/test-strtol.c b/tests/test-strtol.c
index 4230ad28c7..ba8a54de4d 100644
--- a/tests/test-strtol.c
+++ b/tests/test-strtol.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2011-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2011-2023 Free Software Foundation, Inc.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/tests/test-strtold.c b/tests/test-strtold.c
index 91f4591681..40f5cfe68c 100644
--- a/tests/test-strtold.c
+++ b/tests/test-strtold.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2008-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2008-2023 Free Software Foundation, Inc.
  * Written by Eric Blake
  *
  * This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-strtold1.c b/tests/test-strtold1.c
index 54ab61b42b..bf85009b23 100644
--- a/tests/test-strtold1.c
+++ b/tests/test-strtold1.c
@@ -1,5 +1,5 @@
 /* Test of strtold() in a French locale.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-strtoll.c b/tests/test-strtoll.c
index 9b7388eb00..ecedbe6460 100644
--- a/tests/test-strtoll.c
+++ b/tests/test-strtoll.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2011-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2011-2023 Free Software Foundation, Inc.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/tests/test-strtoul.c b/tests/test-strtoul.c
index 1234ee6461..7e8e5f78c6 100644
--- a/tests/test-strtoul.c
+++ b/tests/test-strtoul.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2011-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2011-2023 Free Software Foundation, Inc.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/tests/test-strtoull.c b/tests/test-strtoull.c
index 5859459c1d..dd6ec2ad19 100644
--- a/tests/test-strtoull.c
+++ b/tests/test-strtoull.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2011-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2011-2023 Free Software Foundation, Inc.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/tests/test-strtoumax.c b/tests/test-strtoumax.c
index d8cd0d5ddd..899fb7665b 100644
--- a/tests/test-strtoumax.c
+++ b/tests/test-strtoumax.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2011-2022 Free Software Foundation, Inc.
+ * Copyright (C) 2011-2023 Free Software Foundation, Inc.
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/tests/test-strverscmp.c b/tests/test-strverscmp.c
index 395358f422..36f32116ff 100644
--- a/tests/test-strverscmp.c
+++ b/tests/test-strverscmp.c
@@ -1,5 +1,5 @@
 /* Test of strverscmp() function.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-supersede-fopen.h b/tests/test-supersede-fopen.h
index a7615cca6e..7bf696ec5c 100644
--- a/tests/test-supersede-fopen.h
+++ b/tests/test-supersede-fopen.h
@@ -1,6 +1,6 @@
 /* Tests for opening a file without destroying an old file with the same name.
 
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-supersede-open.h b/tests/test-supersede-open.h
index accaeca725..9cca856be1 100644
--- a/tests/test-supersede-open.h
+++ b/tests/test-supersede-open.h
@@ -1,6 +1,6 @@
 /* Tests for opening a file without destroying an old file with the same name.
 
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-supersede.c b/tests/test-supersede.c
index 0453d98bc9..abacd55b30 100644
--- a/tests/test-supersede.c
+++ b/tests/test-supersede.c
@@ -1,6 +1,6 @@
 /* Tests for opening a file without destroying an old file with the same name.
 
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-symlink.c b/tests/test-symlink.c
index 3dbd60a098..c3cd831450 100644
--- a/tests/test-symlink.c
+++ b/tests/test-symlink.c
@@ -1,5 +1,5 @@
 /* Tests of symlink.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-symlink.h b/tests/test-symlink.h
index 0ce5ad4ade..46a5c77f2f 100644
--- a/tests/test-symlink.h
+++ b/tests/test-symlink.h
@@ -1,5 +1,5 @@
 /* Tests of symlink.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-symlinkat.c b/tests/test-symlinkat.c
index 80f02528bf..e44f254035 100644
--- a/tests/test-symlinkat.c
+++ b/tests/test-symlinkat.c
@@ -1,5 +1,5 @@
 /* Tests of symlinkat.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sys_file-c++.cc b/tests/test-sys_file-c++.cc
index e87e2471c7..9dda3e935d 100644
--- a/tests/test-sys_file-c++.cc
+++ b/tests/test-sys_file-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <sys/file.h> substitute in C++ mode.
-   Copyright (C) 2022 Free Software Foundation, Inc.
+   Copyright (C) 2022-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sys_file.c b/tests/test-sys_file.c
index 1d9cff5f4c..347d6d2dd3 100644
--- a/tests/test-sys_file.c
+++ b/tests/test-sys_file.c
@@ -1,5 +1,5 @@
 /* Test of <sys/file.h> substitute.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sys_ioctl-c++.cc b/tests/test-sys_ioctl-c++.cc
index f42204c770..d59e24641a 100644
--- a/tests/test-sys_ioctl-c++.cc
+++ b/tests/test-sys_ioctl-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <sys/ioctl.h> substitute in C++ mode.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sys_ioctl.c b/tests/test-sys_ioctl.c
index 72c9d49a7e..dd053d4229 100644
--- a/tests/test-sys_ioctl.c
+++ b/tests/test-sys_ioctl.c
@@ -1,5 +1,5 @@
 /* Test of <sys/ioctl.h> substitute.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sys_random-c++.cc b/tests/test-sys_random-c++.cc
index c1b2b939bd..09ceef98da 100644
--- a/tests/test-sys_random-c++.cc
+++ b/tests/test-sys_random-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <sys/random.h> substitute in C++ mode.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sys_random.c b/tests/test-sys_random.c
index 049c6755db..574e231276 100644
--- a/tests/test-sys_random.c
+++ b/tests/test-sys_random.c
@@ -1,5 +1,5 @@
 /* Test of <sys/random.h> substitute.
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sys_resource-c++.cc b/tests/test-sys_resource-c++.cc
index f83d62fa2d..9ffe601b0d 100644
--- a/tests/test-sys_resource-c++.cc
+++ b/tests/test-sys_resource-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <sys/resource.h> substitute in C++ mode.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sys_resource.c b/tests/test-sys_resource.c
index 01b3f44a5c..9034244b80 100644
--- a/tests/test-sys_resource.c
+++ b/tests/test-sys_resource.c
@@ -1,5 +1,5 @@
 /* Test of <sys/resource.h> substitute.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sys_select-c++.cc b/tests/test-sys_select-c++.cc
index 1324efe9e8..0bdec561a1 100644
--- a/tests/test-sys_select-c++.cc
+++ b/tests/test-sys_select-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <sys/select.h> substitute in C++ mode.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sys_select.c b/tests/test-sys_select.c
index c895fe2b47..701ccc0eed 100644
--- a/tests/test-sys_select.c
+++ b/tests/test-sys_select.c
@@ -1,5 +1,5 @@
 /* Test of <sys/select.h> substitute.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sys_socket-c++.cc b/tests/test-sys_socket-c++.cc
index 55098e4fb2..ad3bfe4651 100644
--- a/tests/test-sys_socket-c++.cc
+++ b/tests/test-sys_socket-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <sys/socket.h> substitute in C++ mode.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sys_socket.c b/tests/test-sys_socket.c
index f230d5b4d9..b522c25a17 100644
--- a/tests/test-sys_socket.c
+++ b/tests/test-sys_socket.c
@@ -1,5 +1,5 @@
 /* Test of <sys/socket.h> substitute.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sys_stat-c++.cc b/tests/test-sys_stat-c++.cc
index ab5744571b..0ecebb084b 100644
--- a/tests/test-sys_stat-c++.cc
+++ b/tests/test-sys_stat-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <sys/stat.h> substitute in C++ mode.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sys_stat.c b/tests/test-sys_stat.c
index b404d9f22c..8453fc4a21 100644
--- a/tests/test-sys_stat.c
+++ b/tests/test-sys_stat.c
@@ -1,5 +1,5 @@
 /* Test of <sys/stat.h> substitute.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sys_time-c++.cc b/tests/test-sys_time-c++.cc
index e542b401ed..d41b96f5bc 100644
--- a/tests/test-sys_time-c++.cc
+++ b/tests/test-sys_time-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <sys/time.h> substitute in C++ mode.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sys_time.c b/tests/test-sys_time.c
index b952243e44..f0df8b8d86 100644
--- a/tests/test-sys_time.c
+++ b/tests/test-sys_time.c
@@ -1,5 +1,5 @@
 /* Test of <sys/time.h> substitute.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sys_times-c++.cc b/tests/test-sys_times-c++.cc
index 4b26814b61..b5c56d96a2 100644
--- a/tests/test-sys_times-c++.cc
+++ b/tests/test-sys_times-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <sys/times.h> substitute in C++ mode.
-   Copyright (C) 2022 Free Software Foundation, Inc.
+   Copyright (C) 2022-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sys_times.c b/tests/test-sys_times.c
index 846046c3c8..7517df1fcf 100644
--- a/tests/test-sys_times.c
+++ b/tests/test-sys_times.c
@@ -1,5 +1,5 @@
 /* Test of <sys/times.h> substitute.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sys_types-c++.cc b/tests/test-sys_types-c++.cc
index eacce39f72..e61f7dae3e 100644
--- a/tests/test-sys_types-c++.cc
+++ b/tests/test-sys_types-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <sys/types.h> substitute in C++ mode.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sys_types.c b/tests/test-sys_types.c
index 290bd0d53a..f9f2bb7054 100644
--- a/tests/test-sys_types.c
+++ b/tests/test-sys_types.c
@@ -1,5 +1,5 @@
 /* Test of <sys/types.h> substitute.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sys_uio-c++.cc b/tests/test-sys_uio-c++.cc
index 537947ba8e..e63b9a9bd6 100644
--- a/tests/test-sys_uio-c++.cc
+++ b/tests/test-sys_uio-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <sys/uio.h> substitute in C++ mode.
-   Copyright (C) 2022 Free Software Foundation, Inc.
+   Copyright (C) 2022-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sys_uio.c b/tests/test-sys_uio.c
index f4f7b7ac66..3ecd170d3c 100644
--- a/tests/test-sys_uio.c
+++ b/tests/test-sys_uio.c
@@ -1,5 +1,5 @@
 /* Test of <sys/uio.h> substitute.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sys_utsname-c++.cc b/tests/test-sys_utsname-c++.cc
index 9bf20802b6..6af2a65d8a 100644
--- a/tests/test-sys_utsname-c++.cc
+++ b/tests/test-sys_utsname-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <sys/utsname.h> substitute in C++ mode.
-   Copyright (C) 2022 Free Software Foundation, Inc.
+   Copyright (C) 2022-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sys_utsname.c b/tests/test-sys_utsname.c
index 5bf9ba5640..63d2206551 100644
--- a/tests/test-sys_utsname.c
+++ b/tests/test-sys_utsname.c
@@ -1,5 +1,5 @@
 /* Test of <sys/utsname.h> substitute.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sys_wait-c++.cc b/tests/test-sys_wait-c++.cc
index 856ec2d3a2..a3aa29a5e6 100644
--- a/tests/test-sys_wait-c++.cc
+++ b/tests/test-sys_wait-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <sys/wait.h> substitute in C++ mode.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sys_wait.c b/tests/test-sys_wait.c
index 6a13076792..7fbef06cfc 100644
--- a/tests/test-sys_wait.c
+++ b/tests/test-sys_wait.c
@@ -1,5 +1,5 @@
 /* Test of <sys/wait.h> substitute.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sys_wait.h b/tests/test-sys_wait.h
index 9becf28ebb..376a3155cf 100644
--- a/tests/test-sys_wait.h
+++ b/tests/test-sys_wait.h
@@ -1,5 +1,5 @@
 /* Test of macros shared between <sys/wait.h> and <stdlib.h>.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sysexits-c++.cc b/tests/test-sysexits-c++.cc
index 619369d5a0..dbd3e091f1 100644
--- a/tests/test-sysexits-c++.cc
+++ b/tests/test-sysexits-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <sysexits.h> substitute in C++ mode.
-   Copyright (C) 2022 Free Software Foundation, Inc.
+   Copyright (C) 2022-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-sysexits.c b/tests/test-sysexits.c
index 6212e14aca..1eeab87576 100644
--- a/tests/test-sysexits.c
+++ b/tests/test-sysexits.c
@@ -1,5 +1,5 @@
 /* Test of <sysexits.h> substitute.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-system-quote-child.c b/tests/test-system-quote-child.c
index 62d3f95957..08ab9e5080 100644
--- a/tests/test-system-quote-child.c
+++ b/tests/test-system-quote-child.c
@@ -1,5 +1,5 @@
 /* Child program invoked by test-system-quote-main.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-system-quote-main.c b/tests/test-system-quote-main.c
index 657719f597..811fc7ed09 100644
--- a/tests/test-system-quote-main.c
+++ b/tests/test-system-quote-main.c
@@ -1,5 +1,5 @@
 /* Test of system-quote module.
-   Copyright (C) 2012-2022 Free Software Foundation, Inc.
+   Copyright (C) 2012-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-tan.c b/tests/test-tan.c
index e14fd73e8a..19838930ae 100644
--- a/tests/test-tan.c
+++ b/tests/test-tan.c
@@ -1,5 +1,5 @@
 /* Test of tan() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-tanf.c b/tests/test-tanf.c
index bfbe6b3230..6a80c24388 100644
--- a/tests/test-tanf.c
+++ b/tests/test-tanf.c
@@ -1,5 +1,5 @@
 /* Test of tanf() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-tanh.c b/tests/test-tanh.c
index 17c1ef5a9b..783bb93a40 100644
--- a/tests/test-tanh.c
+++ b/tests/test-tanh.c
@@ -1,5 +1,5 @@
 /* Test of tanh() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-tanhf.c b/tests/test-tanhf.c
index a71d7fb85f..a769a9bb03 100644
--- a/tests/test-tanhf.c
+++ b/tests/test-tanhf.c
@@ -1,5 +1,5 @@
 /* Test of tanhf() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-tanl.c b/tests/test-tanl.c
index c06190d3d4..389d37294e 100644
--- a/tests/test-tanl.c
+++ b/tests/test-tanl.c
@@ -1,5 +1,5 @@
 /* Test of tanl() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-tempname.c b/tests/test-tempname.c
index 4a0ca65f2c..3c1f664b60 100644
--- a/tests/test-tempname.c
+++ b/tests/test-tempname.c
@@ -1,5 +1,5 @@
 /* Test of creating a temporary file.
-   Copyright (C) 2022 Free Software Foundation, Inc.
+   Copyright (C) 2022-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-term-style-control-hello.c 
b/tests/test-term-style-control-hello.c
index b932ad5967..b9004ea41d 100644
--- a/tests/test-term-style-control-hello.c
+++ b/tests/test-term-style-control-hello.c
@@ -1,5 +1,5 @@
 /* Simple test program for the term-style-control module.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2019.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-term-style-control-yes.c 
b/tests/test-term-style-control-yes.c
index 0c1466ea53..118434c99f 100644
--- a/tests/test-term-style-control-yes.c
+++ b/tests/test-term-style-control-yes.c
@@ -1,5 +1,5 @@
 /* Interactive test program for the term-style-control module.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2019.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-termcap.c b/tests/test-termcap.c
index 869f30e988..ab4062169e 100644
--- a/tests/test-termcap.c
+++ b/tests/test-termcap.c
@@ -1,5 +1,5 @@
 /* Ad-hoc testing program for <termcap.h>.
-   Copyright (C) 2022 Free Software Foundation, Inc.
+   Copyright (C) 2022-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-terminfo.c b/tests/test-terminfo.c
index 9f8f5e88a1..682ae2ed17 100644
--- a/tests/test-terminfo.c
+++ b/tests/test-terminfo.c
@@ -1,5 +1,5 @@
 /* Ad-hoc testing program for <termcap.h>.
-   Copyright (C) 2022 Free Software Foundation, Inc.
+   Copyright (C) 2022-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-termios-c++.cc b/tests/test-termios-c++.cc
index 84c1497d75..39953b9451 100644
--- a/tests/test-termios-c++.cc
+++ b/tests/test-termios-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <termios.h> substitute in C++ mode.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-termios.c b/tests/test-termios.c
index 39b64faee0..d4867a19af 100644
--- a/tests/test-termios.c
+++ b/tests/test-termios.c
@@ -1,5 +1,5 @@
 /* Test of <termios.h> substitute.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-thrd_create.c b/tests/test-thrd_create.c
index b134bc789b..b7b56dee31 100644
--- a/tests/test-thrd_create.c
+++ b/tests/test-thrd_create.c
@@ -1,5 +1,5 @@
 /* Test of thrd_create () macro.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-thrd_current.c b/tests/test-thrd_current.c
index 7c1cbcea95..0bf15f51fa 100644
--- a/tests/test-thrd_current.c
+++ b/tests/test-thrd_current.c
@@ -1,5 +1,5 @@
 /* Test of thrd_current () function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-thread_create.c b/tests/test-thread_create.c
index 17e6942bb5..9312d8e910 100644
--- a/tests/test-thread_create.c
+++ b/tests/test-thread_create.c
@@ -1,5 +1,5 @@
 /* Test of gl_thread_create () macro.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-thread_local.c b/tests/test-thread_local.c
index ab3f22aa8e..c30ad10238 100644
--- a/tests/test-thread_local.c
+++ b/tests/test-thread_local.c
@@ -1,5 +1,5 @@
 /* Test of thread-local storage in multithreaded situations.
-   Copyright (C) 2005, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005, 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-thread_self.c b/tests/test-thread_self.c
index 30d4638074..3073605005 100644
--- a/tests/test-thread_self.c
+++ b/tests/test-thread_self.c
@@ -1,5 +1,5 @@
 /* Test of gl_thread_self () macro.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-threads-c++.cc b/tests/test-threads-c++.cc
index 790e534c3c..7c3bcb80b1 100644
--- a/tests/test-threads-c++.cc
+++ b/tests/test-threads-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <threads.h> substitute in C++ mode.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-threads.c b/tests/test-threads.c
index 278acddd4e..2ccf58af18 100644
--- a/tests/test-threads.c
+++ b/tests/test-threads.c
@@ -1,5 +1,5 @@
 /* Test of <threads.h> substitute.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-time-c++.cc b/tests/test-time-c++.cc
index 67bcd3a2a1..70b2a0f0c7 100644
--- a/tests/test-time-c++.cc
+++ b/tests/test-time-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <time.h> substitute in C++ mode.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-time-c++2.cc b/tests/test-time-c++2.cc
index 90ea3921f8..7c4dcebafe 100644
--- a/tests/test-time-c++2.cc
+++ b/tests/test-time-c++2.cc
@@ -1,5 +1,5 @@
 /* Test of <time.h> substitute in C++ mode.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-time.c b/tests/test-time.c
index 6b69f3d529..2240705bb7 100644
--- a/tests/test-time.c
+++ b/tests/test-time.c
@@ -1,5 +1,5 @@
 /* Test of <time.h> substitute.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-times.c b/tests/test-times.c
index 1163cd1617..24df3cdcfe 100644
--- a/tests/test-times.c
+++ b/tests/test-times.c
@@ -1,5 +1,5 @@
 /* Test of times function.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-timespec.c b/tests/test-timespec.c
index 9959e95a6c..de7cb6f0e2 100644
--- a/tests/test-timespec.c
+++ b/tests/test-timespec.c
@@ -1,5 +1,5 @@
 /* Test timespec functions.
-   Copyright 2015-2022 Free Software Foundation, Inc.
+   Copyright 2015-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-timespec_get.c b/tests/test-timespec_get.c
index a9554c8ac0..1b20fe23c0 100644
--- a/tests/test-timespec_get.c
+++ b/tests/test-timespec_get.c
@@ -1,5 +1,5 @@
 /* Test of timespec_get() function.
-   Copyright (C) 2021-2022 Free Software Foundation, Inc.
+   Copyright (C) 2021-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-timespec_getres.c b/tests/test-timespec_getres.c
index 39ee3dc098..4ec7d02ec6 100644
--- a/tests/test-timespec_getres.c
+++ b/tests/test-timespec_getres.c
@@ -1,5 +1,5 @@
 /* Test timespec_getres.
-   Copyright 2021-2022 Free Software Foundation, Inc.
+   Copyright 2021-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-tls.c b/tests/test-tls.c
index e8b05c5a57..2b0a33ec5c 100644
--- a/tests/test-tls.c
+++ b/tests/test-tls.c
@@ -1,5 +1,5 @@
 /* Test of thread-local storage in multithreaded situations.
-   Copyright (C) 2005, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005, 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-trunc-ieee.c b/tests/test-trunc-ieee.c
index f94c3851d5..a511237df4 100644
--- a/tests/test-trunc-ieee.c
+++ b/tests/test-trunc-ieee.c
@@ -1,5 +1,5 @@
 /* Test of rounding towards zero.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-trunc1.c b/tests/test-trunc1.c
index f0ac9eebcf..d392b1773d 100644
--- a/tests/test-trunc1.c
+++ b/tests/test-trunc1.c
@@ -1,5 +1,5 @@
 /* Test of rounding towards zero.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-trunc2.c b/tests/test-trunc2.c
index 976ab250bb..9eab1525eb 100644
--- a/tests/test-trunc2.c
+++ b/tests/test-trunc2.c
@@ -1,5 +1,5 @@
 /* Test of rounding towards zero.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-truncate.c b/tests/test-truncate.c
index 449654c2db..f2bab2ed72 100644
--- a/tests/test-truncate.c
+++ b/tests/test-truncate.c
@@ -1,5 +1,5 @@
 /* Test truncating a file.
-   Copyright (C) 2017-2022 Free Software Foundation, Inc.
+   Copyright (C) 2017-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-truncf-ieee.c b/tests/test-truncf-ieee.c
index c2053147be..4c050522bb 100644
--- a/tests/test-truncf-ieee.c
+++ b/tests/test-truncf-ieee.c
@@ -1,5 +1,5 @@
 /* Test of rounding towards zero.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-truncf1.c b/tests/test-truncf1.c
index 2dd94f1111..7ca063fc08 100644
--- a/tests/test-truncf1.c
+++ b/tests/test-truncf1.c
@@ -1,5 +1,5 @@
 /* Test of rounding towards zero.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-truncf2.c b/tests/test-truncf2.c
index b25e16af3b..d645b9758c 100644
--- a/tests/test-truncf2.c
+++ b/tests/test-truncf2.c
@@ -1,5 +1,5 @@
 /* Test of rounding towards zero.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-truncl-ieee.c b/tests/test-truncl-ieee.c
index 1e4f8a14d2..ce072a3da5 100644
--- a/tests/test-truncl-ieee.c
+++ b/tests/test-truncl-ieee.c
@@ -1,5 +1,5 @@
 /* Test of rounding towards zero.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-truncl.c b/tests/test-truncl.c
index 4409256ff0..4b0afbb914 100644
--- a/tests/test-truncl.c
+++ b/tests/test-truncl.c
@@ -1,5 +1,5 @@
 /* Test of rounding towards zero.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-tsearch.c b/tests/test-tsearch.c
index 657d57e4aa..892f1ebd67 100644
--- a/tests/test-tsearch.c
+++ b/tests/test-tsearch.c
@@ -1,5 +1,5 @@
 /* Test program for tsearch et al.
-   Copyright (C) 1997, 2000-2001, 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 1997, 2000-2001, 2007-2023 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software: you can redistribute it and/or
diff --git a/tests/test-tss.c b/tests/test-tss.c
index 07bc479de7..ae17844ee5 100644
--- a/tests/test-tss.c
+++ b/tests/test-tss.c
@@ -1,5 +1,5 @@
 /* Test of thread-local storage in multithreaded situations.
-   Copyright (C) 2005, 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005, 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-ttyname_r.c b/tests/test-ttyname_r.c
index 37e69c8ed9..61b798b608 100644
--- a/tests/test-ttyname_r.c
+++ b/tests/test-ttyname_r.c
@@ -1,5 +1,5 @@
 /* Test of ttyname_r(3).
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-u64.c b/tests/test-u64.c
index e588974fe2..997ef062eb 100644
--- a/tests/test-u64.c
+++ b/tests/test-u64.c
@@ -1,5 +1,5 @@
 /* Test of <u64.h>
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-uchar-c++.cc b/tests/test-uchar-c++.cc
index 1f7eaf1207..09952123ff 100644
--- a/tests/test-uchar-c++.cc
+++ b/tests/test-uchar-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <uchar.h> substitute in C++ mode.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-uchar-c++2.cc b/tests/test-uchar-c++2.cc
index cfa293a644..6460095ccd 100644
--- a/tests/test-uchar-c++2.cc
+++ b/tests/test-uchar-c++2.cc
@@ -1,5 +1,5 @@
 /* Test of <uchar.h> substitute in C++ mode.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-uchar.c b/tests/test-uchar.c
index ad83d8ad91..0d5b7d77eb 100644
--- a/tests/test-uchar.c
+++ b/tests/test-uchar.c
@@ -1,5 +1,5 @@
 /* Test of <uchar.h> substitute.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-uname.c b/tests/test-uname.c
index 85ee2e801f..9e5a2e6201 100644
--- a/tests/test-uname.c
+++ b/tests/test-uname.c
@@ -1,5 +1,5 @@
 /* Test of system information.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-unicodeio.c b/tests/test-unicodeio.c
index aeff3a097e..1b7010c1ae 100644
--- a/tests/test-unicodeio.c
+++ b/tests/test-unicodeio.c
@@ -1,6 +1,6 @@
 /* Tests for Unicode character output.
 
-   Copyright (C) 2020-2022 Free Software Foundation, Inc.
+   Copyright (C) 2020-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-unistd-c++.cc b/tests/test-unistd-c++.cc
index 39aafdde09..ad0642db60 100644
--- a/tests/test-unistd-c++.cc
+++ b/tests/test-unistd-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <unistd.h> substitute in C++ mode.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-unistd.c b/tests/test-unistd.c
index a59af1e3ff..08c58324cd 100644
--- a/tests/test-unistd.c
+++ b/tests/test-unistd.c
@@ -1,5 +1,5 @@
 /* Test of <unistd.h> substitute.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-unlink.c b/tests/test-unlink.c
index d1ed36a1df..f8bdef696e 100644
--- a/tests/test-unlink.c
+++ b/tests/test-unlink.c
@@ -1,5 +1,5 @@
 /* Tests of unlink.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-unlink.h b/tests/test-unlink.h
index dde154bca1..8d30d3a6d2 100644
--- a/tests/test-unlink.h
+++ b/tests/test-unlink.h
@@ -1,5 +1,5 @@
 /* Tests of unlink.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-unlinkat.c b/tests/test-unlinkat.c
index b565fd67ef..22c17e7aed 100644
--- a/tests/test-unlinkat.c
+++ b/tests/test-unlinkat.c
@@ -1,5 +1,5 @@
 /* Tests of unlinkat.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-unlockpt.c b/tests/test-unlockpt.c
index f8d6514870..66518c327e 100644
--- a/tests/test-unlockpt.c
+++ b/tests/test-unlockpt.c
@@ -1,5 +1,5 @@
 /* Test unlocking of the slave side of a pseudo-terminal.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-unsetenv.c b/tests/test-unsetenv.c
index 61dbc81a60..ddc412867f 100644
--- a/tests/test-unsetenv.c
+++ b/tests/test-unsetenv.c
@@ -1,5 +1,5 @@
 /* Tests of unsetenv.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-update-copyright.sh b/tests/test-update-copyright.sh
index 5fc9492117..377cf8731e 100755
--- a/tests/test-update-copyright.sh
+++ b/tests/test-update-copyright.sh
@@ -1,6 +1,6 @@
 #!/bin/sh
 # Test suite for update-copyright.
-# Copyright (C) 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2009-2023 Free Software Foundation, Inc.
 # This file is part of the GNUlib Library.
 #
 # This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-userspec.c b/tests/test-userspec.c
index 08f1a9ca9d..330eb1e53c 100644
--- a/tests/test-userspec.c
+++ b/tests/test-userspec.c
@@ -1,5 +1,5 @@
 /* Test userspec.c
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-usleep.c b/tests/test-usleep.c
index e1133dd67e..c3e6525a1f 100644
--- a/tests/test-usleep.c
+++ b/tests/test-usleep.c
@@ -1,5 +1,5 @@
 /* Test of usleep() function.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-utime-h-c++.cc b/tests/test-utime-h-c++.cc
index 970257ef89..8793ef0ff3 100644
--- a/tests/test-utime-h-c++.cc
+++ b/tests/test-utime-h-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <utime.h> substitute in C++ mode.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-utime-h.c b/tests/test-utime-h.c
index 4853c092a3..f59434da50 100644
--- a/tests/test-utime-h.c
+++ b/tests/test-utime-h.c
@@ -1,5 +1,5 @@
 /* Test of <utime.h> substitute.
-   Copyright (C) 2017-2022 Free Software Foundation, Inc.
+   Copyright (C) 2017-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-utime.c b/tests/test-utime.c
index b172b0d51b..7c673320bd 100644
--- a/tests/test-utime.c
+++ b/tests/test-utime.c
@@ -1,5 +1,5 @@
 /* Tests of utime.
-   Copyright (C) 2017-2022 Free Software Foundation, Inc.
+   Copyright (C) 2017-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-utimens-common.h b/tests/test-utimens-common.h
index 5e772540dd..105816769e 100644
--- a/tests/test-utimens-common.h
+++ b/tests/test-utimens-common.h
@@ -1,5 +1,5 @@
 /* Test of file timestamp modification functions.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-utimens.c b/tests/test-utimens.c
index a2188f90b5..321fe3dc8f 100644
--- a/tests/test-utimens.c
+++ b/tests/test-utimens.c
@@ -1,5 +1,5 @@
 /* Tests of utimens.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-utimens.h b/tests/test-utimens.h
index 05a9cb28e4..a9039c4abf 100644
--- a/tests/test-utimens.h
+++ b/tests/test-utimens.h
@@ -1,5 +1,5 @@
 /* Test of file timestamp modification functions.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-utimensat.c b/tests/test-utimensat.c
index 5831fde1be..afa5e71204 100644
--- a/tests/test-utimensat.c
+++ b/tests/test-utimensat.c
@@ -1,5 +1,5 @@
 /* Tests of utimensat.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-vasnprintf-posix.c b/tests/test-vasnprintf-posix.c
index 24331fe184..ce894b5001 100644
--- a/tests/test-vasnprintf-posix.c
+++ b/tests/test-vasnprintf-posix.c
@@ -1,5 +1,5 @@
 /* Test of POSIX compatible vasnprintf() and asnprintf() functions.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-vasnprintf-posix2.c b/tests/test-vasnprintf-posix2.c
index b124332c79..f29bf5f086 100644
--- a/tests/test-vasnprintf-posix2.c
+++ b/tests/test-vasnprintf-posix2.c
@@ -1,5 +1,5 @@
 /* Test of POSIX compatible vasnprintf() and asnprintf() functions.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-vasnprintf-posix3.c b/tests/test-vasnprintf-posix3.c
index daf5e7e6bf..ad2d8d6460 100644
--- a/tests/test-vasnprintf-posix3.c
+++ b/tests/test-vasnprintf-posix3.c
@@ -1,5 +1,5 @@
 /* Test of POSIX compatible vasnprintf() and asnprintf() functions.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-vasnprintf.c b/tests/test-vasnprintf.c
index d73a0f6dae..635654bb13 100644
--- a/tests/test-vasnprintf.c
+++ b/tests/test-vasnprintf.c
@@ -1,5 +1,5 @@
 /* Test of vasnprintf() and asnprintf() functions.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-vasprintf-posix.c b/tests/test-vasprintf-posix.c
index 1995ff6d9b..6cfc3aa7f9 100644
--- a/tests/test-vasprintf-posix.c
+++ b/tests/test-vasprintf-posix.c
@@ -1,5 +1,5 @@
 /* Test of POSIX compatible vasprintf() and asprintf() functions.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-vasprintf.c b/tests/test-vasprintf.c
index d242e6a29b..017aa5e7bf 100644
--- a/tests/test-vasprintf.c
+++ b/tests/test-vasprintf.c
@@ -1,5 +1,5 @@
 /* Test of vasprintf() and asprintf() functions.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-vc-list-files-cvs.sh b/tests/test-vc-list-files-cvs.sh
index 35a8da2c60..40723facea 100755
--- a/tests/test-vc-list-files-cvs.sh
+++ b/tests/test-vc-list-files-cvs.sh
@@ -1,6 +1,6 @@
 #!/bin/sh
 # Unit tests for vc-list-files
-# Copyright (C) 2008-2022 Free Software Foundation, Inc.
+# Copyright (C) 2008-2023 Free Software Foundation, Inc.
 # This file is part of the GNUlib Library.
 #
 # This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-vc-list-files-git.sh b/tests/test-vc-list-files-git.sh
index d4e5743705..ab1080089e 100755
--- a/tests/test-vc-list-files-git.sh
+++ b/tests/test-vc-list-files-git.sh
@@ -1,6 +1,6 @@
 #!/bin/sh
 # Unit tests for vc-list-files
-# Copyright (C) 2008-2022 Free Software Foundation, Inc.
+# Copyright (C) 2008-2023 Free Software Foundation, Inc.
 # This file is part of the GNUlib Library.
 #
 # This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-vdprintf-posix.c b/tests/test-vdprintf-posix.c
index b54ed749f4..324ccce1fc 100644
--- a/tests/test-vdprintf-posix.c
+++ b/tests/test-vdprintf-posix.c
@@ -1,5 +1,5 @@
 /* Test of POSIX compatible vdprintf() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-vdprintf.c b/tests/test-vdprintf.c
index 2dcaf0e451..5f5d06805c 100644
--- a/tests/test-vdprintf.c
+++ b/tests/test-vdprintf.c
@@ -1,5 +1,5 @@
 /* Test of vdprintf() function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-verify-try.c b/tests/test-verify-try.c
index 2456133d46..ed7a1c398f 100644
--- a/tests/test-verify-try.c
+++ b/tests/test-verify-try.c
@@ -1,6 +1,6 @@
 /* Test the "verify" module.
 
-   Copyright (C) 2017-2022 Free Software Foundation, Inc.
+   Copyright (C) 2017-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-verify.c b/tests/test-verify.c
index 4ba89c0333..e581a107f4 100644
--- a/tests/test-verify.c
+++ b/tests/test-verify.c
@@ -1,6 +1,6 @@
 /* Test the "verify" module.
 
-   Copyright (C) 2005, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2005, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-version-etc.c b/tests/test-version-etc.c
index dc89c217c6..c81f228bd0 100644
--- a/tests/test-version-etc.c
+++ b/tests/test-version-etc.c
@@ -1,5 +1,5 @@
 /* Test suite for version-etc.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
    This file is part of the GNUlib Library.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-version-etc.sh b/tests/test-version-etc.sh
index f339d69d08..11dcc2884e 100755
--- a/tests/test-version-etc.sh
+++ b/tests/test-version-etc.sh
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Test suite for version-etc.
-# Copyright (C) 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2009-2023 Free Software Foundation, Inc.
 # This file is part of the GNUlib Library.
 #
 # This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-vfprintf-posix.c b/tests/test-vfprintf-posix.c
index d3cac61c9c..d5445bf4dc 100644
--- a/tests/test-vfprintf-posix.c
+++ b/tests/test-vfprintf-posix.c
@@ -1,5 +1,5 @@
 /* Test of POSIX compatible vfprintf() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-vprintf-posix.c b/tests/test-vprintf-posix.c
index 958ebd8f67..424409c1be 100644
--- a/tests/test-vprintf-posix.c
+++ b/tests/test-vprintf-posix.c
@@ -1,5 +1,5 @@
 /* Test of POSIX compatible vfprintf() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-vsnprintf-posix.c b/tests/test-vsnprintf-posix.c
index 3b08f53e92..5448f6769a 100644
--- a/tests/test-vsnprintf-posix.c
+++ b/tests/test-vsnprintf-posix.c
@@ -1,5 +1,5 @@
 /* Test of POSIX compatible vsnprintf() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-vsnprintf.c b/tests/test-vsnprintf.c
index fd4cc82e91..a6930eb9c2 100644
--- a/tests/test-vsnprintf.c
+++ b/tests/test-vsnprintf.c
@@ -1,5 +1,5 @@
 /* Test of vsnprintf() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-vsprintf-posix.c b/tests/test-vsprintf-posix.c
index 7bd8c8f688..fa8b092c7a 100644
--- a/tests/test-vsprintf-posix.c
+++ b/tests/test-vsprintf-posix.c
@@ -1,5 +1,5 @@
 /* Test of POSIX compatible vsprintf() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-wchar-c++.cc b/tests/test-wchar-c++.cc
index 85b7806ea8..7327c71825 100644
--- a/tests/test-wchar-c++.cc
+++ b/tests/test-wchar-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <wchar.h> substitute in C++ mode.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-wchar-c++2.cc b/tests/test-wchar-c++2.cc
index d285e8da40..20603ed795 100644
--- a/tests/test-wchar-c++2.cc
+++ b/tests/test-wchar-c++2.cc
@@ -1,5 +1,5 @@
 /* Test of <wchar.h> substitute in C++ mode.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-wchar-c++3.cc b/tests/test-wchar-c++3.cc
index 6ddb90653f..36f34ec187 100644
--- a/tests/test-wchar-c++3.cc
+++ b/tests/test-wchar-c++3.cc
@@ -1,5 +1,5 @@
 /* Test of <wchar.h> substitute in C++ mode.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-wchar.c b/tests/test-wchar.c
index af7c948601..4b8d53702e 100644
--- a/tests/test-wchar.c
+++ b/tests/test-wchar.c
@@ -1,5 +1,5 @@
 /* Test of <wchar.h> substitute.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-wcrtomb-w32.c b/tests/test-wcrtomb-w32.c
index 67fa5a31d8..4e75fe0e73 100644
--- a/tests/test-wcrtomb-w32.c
+++ b/tests/test-wcrtomb-w32.c
@@ -1,5 +1,5 @@
 /* Test of conversion of wide character to multibyte character.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-wcrtomb.c b/tests/test-wcrtomb.c
index 71d0faf3a8..6ec075083e 100644
--- a/tests/test-wcrtomb.c
+++ b/tests/test-wcrtomb.c
@@ -1,5 +1,5 @@
 /* Test of conversion of wide character to multibyte character.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-wcsnrtombs.c b/tests/test-wcsnrtombs.c
index ed02a27a58..440d7c5edd 100644
--- a/tests/test-wcsnrtombs.c
+++ b/tests/test-wcsnrtombs.c
@@ -1,5 +1,5 @@
 /* Test of conversion of wide string to string.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-wcsrtombs.c b/tests/test-wcsrtombs.c
index 68b3703293..e75dfa6cc7 100644
--- a/tests/test-wcsrtombs.c
+++ b/tests/test-wcsrtombs.c
@@ -1,5 +1,5 @@
 /* Test of conversion of wide string to string.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-wcstok.c b/tests/test-wcstok.c
index 42f5702785..60096e28f4 100644
--- a/tests/test-wcstok.c
+++ b/tests/test-wcstok.c
@@ -1,5 +1,5 @@
 /* Test of conversion of wide string to string.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-wctype-h-c++.cc b/tests/test-wctype-h-c++.cc
index 431a85c097..86ccc18ac1 100644
--- a/tests/test-wctype-h-c++.cc
+++ b/tests/test-wctype-h-c++.cc
@@ -1,5 +1,5 @@
 /* Test of <wctype.h> substitute in C++ mode.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-wctype-h-c++2.cc b/tests/test-wctype-h-c++2.cc
index 405517b0d1..e38e605729 100644
--- a/tests/test-wctype-h-c++2.cc
+++ b/tests/test-wctype-h-c++2.cc
@@ -1,5 +1,5 @@
 /* Test of <wctype.h> substitute in C++ mode.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-wctype-h.c b/tests/test-wctype-h.c
index 08da56b5b6..e413d4bedd 100644
--- a/tests/test-wctype-h.c
+++ b/tests/test-wctype-h.c
@@ -1,5 +1,5 @@
 /* Test of <wctype.h> substitute.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-wcwidth.c b/tests/test-wcwidth.c
index 7e522eecad..b6aa41fafe 100644
--- a/tests/test-wcwidth.c
+++ b/tests/test-wcwidth.c
@@ -1,5 +1,5 @@
 /* Test of wcwidth() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-write.c b/tests/test-write.c
index d61c767dc0..e1a0996237 100644
--- a/tests/test-write.c
+++ b/tests/test-write.c
@@ -1,5 +1,5 @@
 /* Test the write() function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-xalloc-die.c b/tests/test-xalloc-die.c
index 78781306a2..07dcb1dbda 100644
--- a/tests/test-xalloc-die.c
+++ b/tests/test-xalloc-die.c
@@ -1,5 +1,5 @@
 /* Test of xalloc_die() function.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-xalloc-die.sh b/tests/test-xalloc-die.sh
index 2a891110d2..822a2700ea 100755
--- a/tests/test-xalloc-die.sh
+++ b/tests/test-xalloc-die.sh
@@ -1,6 +1,6 @@
 #!/bin/sh
 # Test suite for xalloc_die.
-# Copyright (C) 2009-2022 Free Software Foundation, Inc.
+# Copyright (C) 2009-2023 Free Software Foundation, Inc.
 # This file is part of the GNUlib Library.
 #
 # This program is free software: you can redistribute it and/or modify
diff --git a/tests/test-xfprintf-posix.c b/tests/test-xfprintf-posix.c
index c6e08939ef..36ee020176 100644
--- a/tests/test-xfprintf-posix.c
+++ b/tests/test-xfprintf-posix.c
@@ -1,5 +1,5 @@
 /* Test of error-checking xfprintf() function with POSIX compatible formatting.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-xmemdup0.c b/tests/test-xmemdup0.c
index efe7bdcae5..eae3c58a33 100644
--- a/tests/test-xmemdup0.c
+++ b/tests/test-xmemdup0.c
@@ -1,5 +1,5 @@
 /* Test of xmemdup0() function.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-xprintf-posix.c b/tests/test-xprintf-posix.c
index 323f617178..2599614a2a 100644
--- a/tests/test-xprintf-posix.c
+++ b/tests/test-xprintf-posix.c
@@ -1,5 +1,5 @@
 /* Test of error-checking xprintf() function with POSIX compatible formatting.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-xstdopen.c b/tests/test-xstdopen.c
index d70b8bcc9a..b1c7f781fc 100644
--- a/tests/test-xstdopen.c
+++ b/tests/test-xstdopen.c
@@ -1,5 +1,5 @@
 /* Test of xstdopen() function.
-   Copyright (C) 2019-2022 Free Software Foundation, Inc.
+   Copyright (C) 2019-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-xstrtol.c b/tests/test-xstrtol.c
index 36cd9c9e5d..9c5d35f6e4 100644
--- a/tests/test-xstrtol.c
+++ b/tests/test-xstrtol.c
@@ -1,5 +1,5 @@
 /* Test of xstrtol module.
-   Copyright (C) 1995-1996, 1998-2001, 2003-2022 Free Software Foundation, Inc.
+   Copyright (C) 1995-1996, 1998-2001, 2003-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-xvasprintf.c b/tests/test-xvasprintf.c
index 74b0d80e94..4e316a7c1f 100644
--- a/tests/test-xvasprintf.c
+++ b/tests/test-xvasprintf.c
@@ -1,5 +1,5 @@
 /* Test of xvasprintf() and xasprintf() functions.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-y0.c b/tests/test-y0.c
index d2268ca0a7..c15099e520 100644
--- a/tests/test-y0.c
+++ b/tests/test-y0.c
@@ -1,5 +1,5 @@
 /* Test of y0() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-y1.c b/tests/test-y1.c
index 21ab8d666e..e53326874c 100644
--- a/tests/test-y1.c
+++ b/tests/test-y1.c
@@ -1,5 +1,5 @@
 /* Test of y1() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-yesno.c b/tests/test-yesno.c
index 3eea96ef49..2ed7bf6de0 100644
--- a/tests/test-yesno.c
+++ b/tests/test-yesno.c
@@ -1,5 +1,5 @@
 /* Test of yesno module.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/test-yn.c b/tests/test-yn.c
index 41fae9a685..76eaff8bf1 100644
--- a/tests/test-yn.c
+++ b/tests/test-yn.c
@@ -1,5 +1,5 @@
 /* Test of yn() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unicase/test-casecmp.h b/tests/unicase/test-casecmp.h
index a2f90acae0..4dea952701 100644
--- a/tests/unicase/test-casecmp.h
+++ b/tests/unicase/test-casecmp.h
@@ -1,5 +1,5 @@
 /* Test of case and normalization insensitive comparison of Unicode strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unicase/test-is-cased.h b/tests/unicase/test-is-cased.h
index db5c07ecbf..c56dced2d9 100644
--- a/tests/unicase/test-is-cased.h
+++ b/tests/unicase/test-is-cased.h
@@ -1,5 +1,5 @@
 /* Test of test whether case matters for a Unicode string.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unicase/test-is-casefolded.h 
b/tests/unicase/test-is-casefolded.h
index 37019777fa..912829200b 100644
--- a/tests/unicase/test-is-casefolded.h
+++ b/tests/unicase/test-is-casefolded.h
@@ -1,5 +1,5 @@
 /* Test of test whether a Unicode string is already case-folded.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unicase/test-is-lowercase.h 
b/tests/unicase/test-is-lowercase.h
index df91eb1eef..34b9f2dc1b 100644
--- a/tests/unicase/test-is-lowercase.h
+++ b/tests/unicase/test-is-lowercase.h
@@ -1,5 +1,5 @@
 /* Test of test whether a Unicode string is entirely lower case.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unicase/test-is-titlecase.h 
b/tests/unicase/test-is-titlecase.h
index c96a59d627..20b7bf6347 100644
--- a/tests/unicase/test-is-titlecase.h
+++ b/tests/unicase/test-is-titlecase.h
@@ -1,5 +1,5 @@
 /* Test of test whether a Unicode string is entirely title case.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unicase/test-is-uppercase.h 
b/tests/unicase/test-is-uppercase.h
index c58c545ce6..e47846ee70 100644
--- a/tests/unicase/test-is-uppercase.h
+++ b/tests/unicase/test-is-uppercase.h
@@ -1,5 +1,5 @@
 /* Test of test whether a Unicode string is entirely upper case.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unicase/test-locale-language.c 
b/tests/unicase/test-locale-language.c
index dfc1b39bd8..4bb48158fe 100644
--- a/tests/unicase/test-locale-language.c
+++ b/tests/unicase/test-locale-language.c
@@ -1,5 +1,5 @@
 /* Test of language code determination.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unicase/test-mapping-part1.h 
b/tests/unicase/test-mapping-part1.h
index 7bd02d13bd..41e4c11c3a 100644
--- a/tests/unicase/test-mapping-part1.h
+++ b/tests/unicase/test-mapping-part1.h
@@ -1,5 +1,5 @@
 /* Test of single character case mapping functions.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unicase/test-mapping-part2.h 
b/tests/unicase/test-mapping-part2.h
index aafe1a56dd..e8f9886111 100644
--- a/tests/unicase/test-mapping-part2.h
+++ b/tests/unicase/test-mapping-part2.h
@@ -1,5 +1,5 @@
 /* Test of single character case mapping functions.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unicase/test-predicate-part1.h 
b/tests/unicase/test-predicate-part1.h
index c0b9131bda..1d2904c373 100644
--- a/tests/unicase/test-predicate-part1.h
+++ b/tests/unicase/test-predicate-part1.h
@@ -1,5 +1,5 @@
 /* Test the Unicode character type functions.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unicase/test-predicate-part2.h 
b/tests/unicase/test-predicate-part2.h
index a3e2c0ffdd..81daa3a9b1 100644
--- a/tests/unicase/test-predicate-part2.h
+++ b/tests/unicase/test-predicate-part2.h
@@ -1,5 +1,5 @@
 /* Test the Unicode character type functions.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unicase/test-u16-casecmp.c b/tests/unicase/test-u16-casecmp.c
index 6bb4cbf69f..89076cee3c 100644
--- a/tests/unicase/test-u16-casecmp.c
+++ b/tests/unicase/test-u16-casecmp.c
@@ -1,5 +1,5 @@
 /* Test of case and normalization insensitive comparison of UTF-16 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unicase/test-u16-casecoll.c 
b/tests/unicase/test-u16-casecoll.c
index 2eebdff688..74d1e26273 100644
--- a/tests/unicase/test-u16-casecoll.c
+++ b/tests/unicase/test-u16-casecoll.c
@@ -1,6 +1,6 @@
 /* Test of locale dependent, case and normalization insensitive comparison of
    UTF-16 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unicase/test-u16-casefold.c 
b/tests/unicase/test-u16-casefold.c
index cb61f9928f..483ddcdb0c 100644
--- a/tests/unicase/test-u16-casefold.c
+++ b/tests/unicase/test-u16-casefold.c
@@ -1,5 +1,5 @@
 /* Test of casefolding mapping for UTF-16 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unicase/test-u16-is-cased.c 
b/tests/unicase/test-u16-is-cased.c
index 9ce5ff3a02..72f7225b90 100644
--- a/tests/unicase/test-u16-is-cased.c
+++ b/tests/unicase/test-u16-is-cased.c
@@ -1,5 +1,5 @@
 /* Test of test whether case matters for an UTF-16 string.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unicase/test-u16-is-casefolded.c 
b/tests/unicase/test-u16-is-casefolded.c
index 33a0724d95..53948004be 100644
--- a/tests/unicase/test-u16-is-casefolded.c
+++ b/tests/unicase/test-u16-is-casefolded.c
@@ -1,5 +1,5 @@
 /* Test of test whether an UTF-16 string is already case-folded.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unicase/test-u16-is-lowercase.c 
b/tests/unicase/test-u16-is-lowercase.c
index e9726e95d1..83c1e5bca1 100644
--- a/tests/unicase/test-u16-is-lowercase.c
+++ b/tests/unicase/test-u16-is-lowercase.c
@@ -1,5 +1,5 @@
 /* Test of test whether an UTF-16 string is entirely lower case.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unicase/test-u16-is-titlecase.c 
b/tests/unicase/test-u16-is-titlecase.c
index 27a4feefaf..19e81fb499 100644
--- a/tests/unicase/test-u16-is-titlecase.c
+++ b/tests/unicase/test-u16-is-titlecase.c
@@ -1,5 +1,5 @@
 /* Test of test whether an UTF-16 string is entirely title case.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unicase/test-u16-is-uppercase.c 
b/tests/unicase/test-u16-is-uppercase.c
index 2c5be2d8c3..a2fc71d2f7 100644
--- a/tests/unicase/test-u16-is-uppercase.c
+++ b/tests/unicase/test-u16-is-uppercase.c
@@ -1,5 +1,5 @@
 /* Test of test whether an UTF-16 string is entirely upper case.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unicase/test-u16-tolower.c b/tests/unicase/test-u16-tolower.c
index 7c20502de6..6bc446cf89 100644
--- a/tests/unicase/test-u16-tolower.c
+++ b/tests/unicase/test-u16-tolower.c
@@ -1,5 +1,5 @@
 /* Test of lowercase mapping for UTF-16 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unicase/test-u16-totitle.c b/tests/unicase/test-u16-totitle.c
index 98b489dfeb..1737cd2e02 100644
--- a/tests/unicase/test-u16-totitle.c
+++ b/tests/unicase/test-u16-totitle.c
@@ -1,5 +1,5 @@
 /* Test of titlecase mapping for UTF-16 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unicase/test-u16-toupper.c b/tests/unicase/test-u16-toupper.c
index e4e6ae3c95..64008eec10 100644
--- a/tests/unicase/test-u16-toupper.c
+++ b/tests/unicase/test-u16-toupper.c
@@ -1,5 +1,5 @@
 /* Test of uppercase mapping for UTF-16 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unicase/test-u32-casecmp.c b/tests/unicase/test-u32-casecmp.c
index 0080ac01c3..9b650eb2c6 100644
--- a/tests/unicase/test-u32-casecmp.c
+++ b/tests/unicase/test-u32-casecmp.c
@@ -1,5 +1,5 @@
 /* Test of case and normalization insensitive comparison of UTF-32 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unicase/test-u32-casecoll.c 
b/tests/unicase/test-u32-casecoll.c
index 62746c8a04..a772c6a1ad 100644
--- a/tests/unicase/test-u32-casecoll.c
+++ b/tests/unicase/test-u32-casecoll.c
@@ -1,6 +1,6 @@
 /* Test of locale dependent, case and normalization insensitive comparison of
    UTF-32 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unicase/test-u32-casefold.c 
b/tests/unicase/test-u32-casefold.c
index 26f8960d20..384db45d7c 100644
--- a/tests/unicase/test-u32-casefold.c
+++ b/tests/unicase/test-u32-casefold.c
@@ -1,5 +1,5 @@
 /* Test of casefolding mapping for UTF-32 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unicase/test-u32-is-cased.c 
b/tests/unicase/test-u32-is-cased.c
index a92c2671b2..a2953118ca 100644
--- a/tests/unicase/test-u32-is-cased.c
+++ b/tests/unicase/test-u32-is-cased.c
@@ -1,5 +1,5 @@
 /* Test of test whether case matters for an UTF-32 string.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unicase/test-u32-is-casefolded.c 
b/tests/unicase/test-u32-is-casefolded.c
index 701f45334a..0e9618e65f 100644
--- a/tests/unicase/test-u32-is-casefolded.c
+++ b/tests/unicase/test-u32-is-casefolded.c
@@ -1,5 +1,5 @@
 /* Test of test whether an UTF-32 string is already case-folded.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unicase/test-u32-is-lowercase.c 
b/tests/unicase/test-u32-is-lowercase.c
index 2f7c4c20fd..5040acf147 100644
--- a/tests/unicase/test-u32-is-lowercase.c
+++ b/tests/unicase/test-u32-is-lowercase.c
@@ -1,5 +1,5 @@
 /* Test of test whether an UTF-32 string is entirely lower case.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unicase/test-u32-is-titlecase.c 
b/tests/unicase/test-u32-is-titlecase.c
index a860867c6c..fbdd1d4910 100644
--- a/tests/unicase/test-u32-is-titlecase.c
+++ b/tests/unicase/test-u32-is-titlecase.c
@@ -1,5 +1,5 @@
 /* Test of test whether an UTF-32 string is entirely title case.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unicase/test-u32-is-uppercase.c 
b/tests/unicase/test-u32-is-uppercase.c
index 0cd34b8d6b..e50d3f5494 100644
--- a/tests/unicase/test-u32-is-uppercase.c
+++ b/tests/unicase/test-u32-is-uppercase.c
@@ -1,5 +1,5 @@
 /* Test of test whether an UTF-32 string is entirely upper case.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unicase/test-u32-tolower.c b/tests/unicase/test-u32-tolower.c
index 5044bc08bb..28f097a646 100644
--- a/tests/unicase/test-u32-tolower.c
+++ b/tests/unicase/test-u32-tolower.c
@@ -1,5 +1,5 @@
 /* Test of lowercase mapping for UTF-32 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unicase/test-u32-totitle.c b/tests/unicase/test-u32-totitle.c
index 08d2e61a94..5a6f46f054 100644
--- a/tests/unicase/test-u32-totitle.c
+++ b/tests/unicase/test-u32-totitle.c
@@ -1,5 +1,5 @@
 /* Test of titlecase mapping for UTF-32 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unicase/test-u32-toupper.c b/tests/unicase/test-u32-toupper.c
index ddc7ca2cee..5bde405833 100644
--- a/tests/unicase/test-u32-toupper.c
+++ b/tests/unicase/test-u32-toupper.c
@@ -1,5 +1,5 @@
 /* Test of uppercase mapping for UTF-32 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unicase/test-u8-casecmp.c b/tests/unicase/test-u8-casecmp.c
index d76b875892..3ec597e6e4 100644
--- a/tests/unicase/test-u8-casecmp.c
+++ b/tests/unicase/test-u8-casecmp.c
@@ -1,5 +1,5 @@
 /* Test of case and normalization insensitive comparison of UTF-8 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unicase/test-u8-casecoll.c b/tests/unicase/test-u8-casecoll.c
index e8a1969095..677d682cc2 100644
--- a/tests/unicase/test-u8-casecoll.c
+++ b/tests/unicase/test-u8-casecoll.c
@@ -1,6 +1,6 @@
 /* Test of locale dependent, case and normalization insensitive comparison of
    UTF-8 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unicase/test-u8-casefold.c b/tests/unicase/test-u8-casefold.c
index 5fd428445b..fcd3be8fb4 100644
--- a/tests/unicase/test-u8-casefold.c
+++ b/tests/unicase/test-u8-casefold.c
@@ -1,5 +1,5 @@
 /* Test of casefolding mapping for UTF-8 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unicase/test-u8-is-cased.c b/tests/unicase/test-u8-is-cased.c
index dc523836a2..76e97421ad 100644
--- a/tests/unicase/test-u8-is-cased.c
+++ b/tests/unicase/test-u8-is-cased.c
@@ -1,5 +1,5 @@
 /* Test of test whether case matters for an UTF-8 string.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unicase/test-u8-is-casefolded.c 
b/tests/unicase/test-u8-is-casefolded.c
index 6adf2888ff..7c88055f5a 100644
--- a/tests/unicase/test-u8-is-casefolded.c
+++ b/tests/unicase/test-u8-is-casefolded.c
@@ -1,5 +1,5 @@
 /* Test of test whether an UTF-8 string is already case-folded.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unicase/test-u8-is-lowercase.c 
b/tests/unicase/test-u8-is-lowercase.c
index 82a4c8d833..a1d7337a08 100644
--- a/tests/unicase/test-u8-is-lowercase.c
+++ b/tests/unicase/test-u8-is-lowercase.c
@@ -1,5 +1,5 @@
 /* Test of test whether an UTF-8 string is entirely lower case.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unicase/test-u8-is-titlecase.c 
b/tests/unicase/test-u8-is-titlecase.c
index e91b878ac9..1871593161 100644
--- a/tests/unicase/test-u8-is-titlecase.c
+++ b/tests/unicase/test-u8-is-titlecase.c
@@ -1,5 +1,5 @@
 /* Test of test whether an UTF-8 string is entirely title case.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unicase/test-u8-is-uppercase.c 
b/tests/unicase/test-u8-is-uppercase.c
index 33294fa9cf..bca9711639 100644
--- a/tests/unicase/test-u8-is-uppercase.c
+++ b/tests/unicase/test-u8-is-uppercase.c
@@ -1,5 +1,5 @@
 /* Test of test whether an UTF-8 string is entirely upper case.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unicase/test-u8-tolower.c b/tests/unicase/test-u8-tolower.c
index 73d9fca878..8121e5878d 100644
--- a/tests/unicase/test-u8-tolower.c
+++ b/tests/unicase/test-u8-tolower.c
@@ -1,5 +1,5 @@
 /* Test of lowercase mapping for UTF-8 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unicase/test-u8-totitle.c b/tests/unicase/test-u8-totitle.c
index 3a6cc10e00..0fb7da4857 100644
--- a/tests/unicase/test-u8-totitle.c
+++ b/tests/unicase/test-u8-totitle.c
@@ -1,5 +1,5 @@
 /* Test of titlecase mapping for UTF-8 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unicase/test-u8-toupper.c b/tests/unicase/test-u8-toupper.c
index ce0d35290e..e2ab164f12 100644
--- a/tests/unicase/test-u8-toupper.c
+++ b/tests/unicase/test-u8-toupper.c
@@ -1,5 +1,5 @@
 /* Test of uppercase mapping for UTF-8 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unicase/test-ulc-casecmp.c b/tests/unicase/test-ulc-casecmp.c
index 81534f045e..2316e17081 100644
--- a/tests/unicase/test-ulc-casecmp.c
+++ b/tests/unicase/test-ulc-casecmp.c
@@ -1,5 +1,5 @@
 /* Test of case and normalization insensitive comparison of strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unicase/test-ulc-casecoll.c 
b/tests/unicase/test-ulc-casecoll.c
index 07bc2dc440..0bece7fe5c 100644
--- a/tests/unicase/test-ulc-casecoll.c
+++ b/tests/unicase/test-ulc-casecoll.c
@@ -1,6 +1,6 @@
 /* Test of locale dependent, case and normalization insensitive comparison of
    strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uniconv/test-u16-conv-from-enc.c 
b/tests/uniconv/test-u16-conv-from-enc.c
index 82f0091c9d..4e25504e52 100644
--- a/tests/uniconv/test-u16-conv-from-enc.c
+++ b/tests/uniconv/test-u16-conv-from-enc.c
@@ -1,5 +1,5 @@
 /* Test of conversion to UTF-16 from legacy encodings.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uniconv/test-u16-conv-to-enc.c 
b/tests/uniconv/test-u16-conv-to-enc.c
index b423e10c35..3c3da71916 100644
--- a/tests/uniconv/test-u16-conv-to-enc.c
+++ b/tests/uniconv/test-u16-conv-to-enc.c
@@ -1,5 +1,5 @@
 /* Test of conversion from UTF-16 to legacy encodings.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uniconv/test-u16-strconv-from-enc.c 
b/tests/uniconv/test-u16-strconv-from-enc.c
index e34399ad81..dc711f3dee 100644
--- a/tests/uniconv/test-u16-strconv-from-enc.c
+++ b/tests/uniconv/test-u16-strconv-from-enc.c
@@ -1,5 +1,5 @@
 /* Test of conversion to UTF-16 from legacy encodings.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uniconv/test-u16-strconv-to-enc.c 
b/tests/uniconv/test-u16-strconv-to-enc.c
index bfdc6623d1..522d6c1555 100644
--- a/tests/uniconv/test-u16-strconv-to-enc.c
+++ b/tests/uniconv/test-u16-strconv-to-enc.c
@@ -1,5 +1,5 @@
 /* Test of conversion from UTF-16 to legacy encodings.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uniconv/test-u32-conv-from-enc.c 
b/tests/uniconv/test-u32-conv-from-enc.c
index 723a56b30c..4db422777b 100644
--- a/tests/uniconv/test-u32-conv-from-enc.c
+++ b/tests/uniconv/test-u32-conv-from-enc.c
@@ -1,5 +1,5 @@
 /* Test of conversion to UTF-32 from legacy encodings.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uniconv/test-u32-conv-to-enc.c 
b/tests/uniconv/test-u32-conv-to-enc.c
index ca51aa0842..71bc8e6650 100644
--- a/tests/uniconv/test-u32-conv-to-enc.c
+++ b/tests/uniconv/test-u32-conv-to-enc.c
@@ -1,5 +1,5 @@
 /* Test of conversion from UTF-32 to legacy encodings.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uniconv/test-u32-strconv-from-enc.c 
b/tests/uniconv/test-u32-strconv-from-enc.c
index bdd88347a4..a2517e3392 100644
--- a/tests/uniconv/test-u32-strconv-from-enc.c
+++ b/tests/uniconv/test-u32-strconv-from-enc.c
@@ -1,5 +1,5 @@
 /* Test of conversion to UTF-32 from legacy encodings.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uniconv/test-u32-strconv-to-enc.c 
b/tests/uniconv/test-u32-strconv-to-enc.c
index bca05f8655..9ada3e564b 100644
--- a/tests/uniconv/test-u32-strconv-to-enc.c
+++ b/tests/uniconv/test-u32-strconv-to-enc.c
@@ -1,5 +1,5 @@
 /* Test of conversion from UTF-32 to legacy encodings.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uniconv/test-u8-conv-from-enc.c 
b/tests/uniconv/test-u8-conv-from-enc.c
index 80a136f6d3..4e78f67e56 100644
--- a/tests/uniconv/test-u8-conv-from-enc.c
+++ b/tests/uniconv/test-u8-conv-from-enc.c
@@ -1,5 +1,5 @@
 /* Test of conversion to UTF-8 from legacy encodings.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uniconv/test-u8-conv-to-enc.c 
b/tests/uniconv/test-u8-conv-to-enc.c
index 97dc82a6f9..3cc5a6d720 100644
--- a/tests/uniconv/test-u8-conv-to-enc.c
+++ b/tests/uniconv/test-u8-conv-to-enc.c
@@ -1,5 +1,5 @@
 /* Test of conversion from UTF-8 to legacy encodings.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uniconv/test-u8-strconv-from-enc.c 
b/tests/uniconv/test-u8-strconv-from-enc.c
index 1ea836acf9..3aff0d75a2 100644
--- a/tests/uniconv/test-u8-strconv-from-enc.c
+++ b/tests/uniconv/test-u8-strconv-from-enc.c
@@ -1,5 +1,5 @@
 /* Test of conversion to UTF-8 from legacy encodings.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uniconv/test-u8-strconv-to-enc.c 
b/tests/uniconv/test-u8-strconv-to-enc.c
index e02f2056a9..bd7203ea27 100644
--- a/tests/uniconv/test-u8-strconv-to-enc.c
+++ b/tests/uniconv/test-u8-strconv-to-enc.c
@@ -1,5 +1,5 @@
 /* Test of conversion from UTF-8 to legacy encodings.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unigbrk/test-u16-grapheme-breaks.c 
b/tests/unigbrk/test-u16-grapheme-breaks.c
index a1cb80da81..7fda21f043 100644
--- a/tests/unigbrk/test-u16-grapheme-breaks.c
+++ b/tests/unigbrk/test-u16-grapheme-breaks.c
@@ -1,5 +1,5 @@
 /* Grapheme cluster breaks test.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify it
    under the terms of the GNU Lesser General Public License as published
diff --git a/tests/unigbrk/test-u16-grapheme-next.c 
b/tests/unigbrk/test-u16-grapheme-next.c
index bb7aba65f1..4974b852aa 100644
--- a/tests/unigbrk/test-u16-grapheme-next.c
+++ b/tests/unigbrk/test-u16-grapheme-next.c
@@ -1,5 +1,5 @@
 /* Next grapheme cluster length test.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify it
    under the terms of the GNU Lesser General Public License as published
diff --git a/tests/unigbrk/test-u16-grapheme-prev.c 
b/tests/unigbrk/test-u16-grapheme-prev.c
index 986b5ddf50..aaf93fa847 100644
--- a/tests/unigbrk/test-u16-grapheme-prev.c
+++ b/tests/unigbrk/test-u16-grapheme-prev.c
@@ -1,5 +1,5 @@
 /* Previous grapheme cluster test.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify it
    under the terms of the GNU Lesser General Public License as published
diff --git a/tests/unigbrk/test-u32-grapheme-breaks.c 
b/tests/unigbrk/test-u32-grapheme-breaks.c
index 7af266e8b4..f01d888428 100644
--- a/tests/unigbrk/test-u32-grapheme-breaks.c
+++ b/tests/unigbrk/test-u32-grapheme-breaks.c
@@ -1,5 +1,5 @@
 /* Grapheme cluster breaks test.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify it
    under the terms of the GNU Lesser General Public License as published
diff --git a/tests/unigbrk/test-u32-grapheme-next.c 
b/tests/unigbrk/test-u32-grapheme-next.c
index 1762378c3e..e2ab96b4a6 100644
--- a/tests/unigbrk/test-u32-grapheme-next.c
+++ b/tests/unigbrk/test-u32-grapheme-next.c
@@ -1,5 +1,5 @@
 /* Next grapheme cluster length test.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify it
    under the terms of the GNU Lesser General Public License as published
diff --git a/tests/unigbrk/test-u32-grapheme-prev.c 
b/tests/unigbrk/test-u32-grapheme-prev.c
index d3838f52b4..67a8c43c2b 100644
--- a/tests/unigbrk/test-u32-grapheme-prev.c
+++ b/tests/unigbrk/test-u32-grapheme-prev.c
@@ -1,5 +1,5 @@
 /* Previous grapheme cluster test.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify it
    under the terms of the GNU Lesser General Public License as published
diff --git a/tests/unigbrk/test-u8-grapheme-breaks.c 
b/tests/unigbrk/test-u8-grapheme-breaks.c
index fdc0d5050f..d3157377c9 100644
--- a/tests/unigbrk/test-u8-grapheme-breaks.c
+++ b/tests/unigbrk/test-u8-grapheme-breaks.c
@@ -1,5 +1,5 @@
 /* Grapheme cluster breaks test.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify it
    under the terms of the GNU Lesser General Public License as published
diff --git a/tests/unigbrk/test-u8-grapheme-next.c 
b/tests/unigbrk/test-u8-grapheme-next.c
index 5c61d84761..91818b6c71 100644
--- a/tests/unigbrk/test-u8-grapheme-next.c
+++ b/tests/unigbrk/test-u8-grapheme-next.c
@@ -1,5 +1,5 @@
 /* Next grapheme cluster length test.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify it
    under the terms of the GNU Lesser General Public License as published
diff --git a/tests/unigbrk/test-u8-grapheme-prev.c 
b/tests/unigbrk/test-u8-grapheme-prev.c
index a59e264db3..786488e47c 100644
--- a/tests/unigbrk/test-u8-grapheme-prev.c
+++ b/tests/unigbrk/test-u8-grapheme-prev.c
@@ -1,5 +1,5 @@
 /* Previous grapheme cluster test.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify it
    under the terms of the GNU Lesser General Public License as published
diff --git a/tests/unigbrk/test-uc-gbrk-prop.c 
b/tests/unigbrk/test-uc-gbrk-prop.c
index 605d83dcea..1344594ec5 100644
--- a/tests/unigbrk/test-uc-gbrk-prop.c
+++ b/tests/unigbrk/test-uc-gbrk-prop.c
@@ -1,5 +1,5 @@
 /* Test the Unicode grapheme break property function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unigbrk/test-uc-grapheme-breaks.c 
b/tests/unigbrk/test-uc-grapheme-breaks.c
index 1e3b1ee804..b898dc1c9f 100644
--- a/tests/unigbrk/test-uc-grapheme-breaks.c
+++ b/tests/unigbrk/test-uc-grapheme-breaks.c
@@ -1,5 +1,5 @@
 /* Grapheme cluster break function test.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify it
    under the terms of the GNU Lesser General Public License as published
diff --git a/tests/unigbrk/test-uc-is-grapheme-break.c 
b/tests/unigbrk/test-uc-is-grapheme-break.c
index 433ba686c7..c9266e7e67 100644
--- a/tests/unigbrk/test-uc-is-grapheme-break.c
+++ b/tests/unigbrk/test-uc-is-grapheme-break.c
@@ -1,5 +1,5 @@
 /* Grapheme cluster break function test.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify it
    under the terms of the GNU Lesser General Public License as published
diff --git a/tests/unigbrk/test-ulc-grapheme-breaks.c 
b/tests/unigbrk/test-ulc-grapheme-breaks.c
index 8ef608fe06..7504c88784 100644
--- a/tests/unigbrk/test-ulc-grapheme-breaks.c
+++ b/tests/unigbrk/test-ulc-grapheme-breaks.c
@@ -1,5 +1,5 @@
 /* Grapheme cluster breaks test.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unilbrk/test-u16-possible-linebreaks.c 
b/tests/unilbrk/test-u16-possible-linebreaks.c
index 0156d455aa..63207b5805 100644
--- a/tests/unilbrk/test-u16-possible-linebreaks.c
+++ b/tests/unilbrk/test-u16-possible-linebreaks.c
@@ -1,5 +1,5 @@
 /* Test of line breaking of UTF-16 strings.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unilbrk/test-u16-width-linebreaks.c 
b/tests/unilbrk/test-u16-width-linebreaks.c
index c96054479b..3a38419bae 100644
--- a/tests/unilbrk/test-u16-width-linebreaks.c
+++ b/tests/unilbrk/test-u16-width-linebreaks.c
@@ -1,5 +1,5 @@
 /* Test of line breaking of UTF-16 strings.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unilbrk/test-u32-possible-linebreaks.c 
b/tests/unilbrk/test-u32-possible-linebreaks.c
index 5c08c974ef..bb99ec5752 100644
--- a/tests/unilbrk/test-u32-possible-linebreaks.c
+++ b/tests/unilbrk/test-u32-possible-linebreaks.c
@@ -1,5 +1,5 @@
 /* Test of line breaking of UTF-32 strings.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unilbrk/test-u32-width-linebreaks.c 
b/tests/unilbrk/test-u32-width-linebreaks.c
index fa9c09b673..79b7222ad7 100644
--- a/tests/unilbrk/test-u32-width-linebreaks.c
+++ b/tests/unilbrk/test-u32-width-linebreaks.c
@@ -1,5 +1,5 @@
 /* Test of line breaking of UTF-32 strings.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unilbrk/test-u8-possible-linebreaks.c 
b/tests/unilbrk/test-u8-possible-linebreaks.c
index 37f27067fb..ac0abadc4a 100644
--- a/tests/unilbrk/test-u8-possible-linebreaks.c
+++ b/tests/unilbrk/test-u8-possible-linebreaks.c
@@ -1,5 +1,5 @@
 /* Test of line breaking of UTF-8 strings.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unilbrk/test-u8-width-linebreaks.c 
b/tests/unilbrk/test-u8-width-linebreaks.c
index e955235075..d1d8ae9139 100644
--- a/tests/unilbrk/test-u8-width-linebreaks.c
+++ b/tests/unilbrk/test-u8-width-linebreaks.c
@@ -1,5 +1,5 @@
 /* Test of line breaking of UTF-8 strings.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unilbrk/test-ulc-possible-linebreaks.c 
b/tests/unilbrk/test-ulc-possible-linebreaks.c
index e6859277ea..9cd8b0d727 100644
--- a/tests/unilbrk/test-ulc-possible-linebreaks.c
+++ b/tests/unilbrk/test-ulc-possible-linebreaks.c
@@ -1,5 +1,5 @@
 /* Test of line breaking of strings.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unilbrk/test-ulc-width-linebreaks.c 
b/tests/unilbrk/test-ulc-width-linebreaks.c
index 0fffe3ae10..e9c4fa23df 100644
--- a/tests/unilbrk/test-ulc-width-linebreaks.c
+++ b/tests/unilbrk/test-ulc-width-linebreaks.c
@@ -1,5 +1,5 @@
 /* Test of line breaking of strings.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uniname/test-uninames.c b/tests/uniname/test-uninames.c
index c85c9af63d..29d59a534c 100644
--- a/tests/uniname/test-uninames.c
+++ b/tests/uniname/test-uninames.c
@@ -1,5 +1,5 @@
 /* Test the Unicode character name functions.
-   Copyright (C) 2000-2003, 2005, 2007, 2009-2022 Free Software Foundation,
+   Copyright (C) 2000-2003, 2005, 2007, 2009-2023 Free Software Foundation,
    Inc.
 
    This program is free software: you can redistribute it and/or modify
diff --git a/tests/uninorm/test-canonical-decomposition.c 
b/tests/uninorm/test-canonical-decomposition.c
index 0e3fdbf40d..47500e389c 100644
--- a/tests/uninorm/test-canonical-decomposition.c
+++ b/tests/uninorm/test-canonical-decomposition.c
@@ -1,5 +1,5 @@
 /* Test of canonical decomposition of Unicode characters.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uninorm/test-compat-decomposition.c 
b/tests/uninorm/test-compat-decomposition.c
index c02213107d..6e7f2492a5 100644
--- a/tests/uninorm/test-compat-decomposition.c
+++ b/tests/uninorm/test-compat-decomposition.c
@@ -1,5 +1,5 @@
 /* Test of compatibility decomposition of Unicode characters.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uninorm/test-composition.c b/tests/uninorm/test-composition.c
index e6bdc970e3..b55ddc73d9 100644
--- a/tests/uninorm/test-composition.c
+++ b/tests/uninorm/test-composition.c
@@ -1,5 +1,5 @@
 /* Test of canonical composition of Unicode characters.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uninorm/test-decomposing-form.c 
b/tests/uninorm/test-decomposing-form.c
index 17ad3bdb0b..f599795b33 100644
--- a/tests/uninorm/test-decomposing-form.c
+++ b/tests/uninorm/test-decomposing-form.c
@@ -1,5 +1,5 @@
 /* Test of decomposing variant of a normalization form.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uninorm/test-decomposition.c 
b/tests/uninorm/test-decomposition.c
index d0e53e5440..731e1b4879 100644
--- a/tests/uninorm/test-decomposition.c
+++ b/tests/uninorm/test-decomposition.c
@@ -1,5 +1,5 @@
 /* Test of decomposition of Unicode characters.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uninorm/test-nfc.c b/tests/uninorm/test-nfc.c
index db5b45d851..0adaeea07f 100644
--- a/tests/uninorm/test-nfc.c
+++ b/tests/uninorm/test-nfc.c
@@ -1,5 +1,5 @@
 /* Test of canonical normalization of Unicode strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uninorm/test-nfd.c b/tests/uninorm/test-nfd.c
index 7d562e7248..6632cd6086 100644
--- a/tests/uninorm/test-nfd.c
+++ b/tests/uninorm/test-nfd.c
@@ -1,5 +1,5 @@
 /* Test of canonical decomposition of Unicode strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uninorm/test-nfkc.c b/tests/uninorm/test-nfkc.c
index 56a43e7632..4569ad9258 100644
--- a/tests/uninorm/test-nfkc.c
+++ b/tests/uninorm/test-nfkc.c
@@ -1,5 +1,5 @@
 /* Test of compatibility normalization of Unicode strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uninorm/test-nfkd.c b/tests/uninorm/test-nfkd.c
index 88ca6b50c0..283a7b4486 100644
--- a/tests/uninorm/test-nfkd.c
+++ b/tests/uninorm/test-nfkd.c
@@ -1,5 +1,5 @@
 /* Test of compatibility decomposition of Unicode strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uninorm/test-u16-nfc.c b/tests/uninorm/test-u16-nfc.c
index fa3ebfcde4..bbcbe3535f 100644
--- a/tests/uninorm/test-u16-nfc.c
+++ b/tests/uninorm/test-u16-nfc.c
@@ -1,5 +1,5 @@
 /* Test of canonical normalization of UTF-16 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uninorm/test-u16-nfd.c b/tests/uninorm/test-u16-nfd.c
index 08b5c00462..2062eafe9c 100644
--- a/tests/uninorm/test-u16-nfd.c
+++ b/tests/uninorm/test-u16-nfd.c
@@ -1,5 +1,5 @@
 /* Test of canonical decomposition of UTF-16 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uninorm/test-u16-nfkc.c b/tests/uninorm/test-u16-nfkc.c
index 7924d822b9..8969cb66b7 100644
--- a/tests/uninorm/test-u16-nfkc.c
+++ b/tests/uninorm/test-u16-nfkc.c
@@ -1,5 +1,5 @@
 /* Test of compatibility normalization of UTF-16 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uninorm/test-u16-nfkd.c b/tests/uninorm/test-u16-nfkd.c
index 1d78701d0e..52df30c6ee 100644
--- a/tests/uninorm/test-u16-nfkd.c
+++ b/tests/uninorm/test-u16-nfkd.c
@@ -1,5 +1,5 @@
 /* Test of compatibility decomposition of UTF-16 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uninorm/test-u16-normcmp.c b/tests/uninorm/test-u16-normcmp.c
index 9ebb94b29d..8a940f522c 100644
--- a/tests/uninorm/test-u16-normcmp.c
+++ b/tests/uninorm/test-u16-normcmp.c
@@ -1,5 +1,5 @@
 /* Test of normalization insensitive comparison of UTF-16 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uninorm/test-u16-normcmp.h b/tests/uninorm/test-u16-normcmp.h
index 0c7ce100af..98a0262404 100644
--- a/tests/uninorm/test-u16-normcmp.h
+++ b/tests/uninorm/test-u16-normcmp.h
@@ -1,5 +1,5 @@
 /* Test of normalization insensitive comparison of UTF-16 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uninorm/test-u16-normcoll.c 
b/tests/uninorm/test-u16-normcoll.c
index e0689a302d..edb49d8357 100644
--- a/tests/uninorm/test-u16-normcoll.c
+++ b/tests/uninorm/test-u16-normcoll.c
@@ -1,6 +1,6 @@
 /* Test of locale dependent, normalization insensitive comparison of
    UTF-16 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uninorm/test-u32-nfc-big.c b/tests/uninorm/test-u32-nfc-big.c
index b9f35e5623..2b41318fe5 100644
--- a/tests/uninorm/test-u32-nfc-big.c
+++ b/tests/uninorm/test-u32-nfc-big.c
@@ -1,5 +1,5 @@
 /* Test of Unicode compliance of canonical normalization of UTF-32 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uninorm/test-u32-nfc.c b/tests/uninorm/test-u32-nfc.c
index 57b6a1947d..4a90665d72 100644
--- a/tests/uninorm/test-u32-nfc.c
+++ b/tests/uninorm/test-u32-nfc.c
@@ -1,5 +1,5 @@
 /* Test of canonical normalization of UTF-32 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uninorm/test-u32-nfd-big.c b/tests/uninorm/test-u32-nfd-big.c
index 683c768b46..b31d0cd762 100644
--- a/tests/uninorm/test-u32-nfd-big.c
+++ b/tests/uninorm/test-u32-nfd-big.c
@@ -1,5 +1,5 @@
 /* Test of Unicode compliance of canonical decomposition of UTF-32 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uninorm/test-u32-nfd.c b/tests/uninorm/test-u32-nfd.c
index 33f2c97da4..b7c45474c2 100644
--- a/tests/uninorm/test-u32-nfd.c
+++ b/tests/uninorm/test-u32-nfd.c
@@ -1,5 +1,5 @@
 /* Test of canonical decomposition of UTF-32 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uninorm/test-u32-nfkc-big.c 
b/tests/uninorm/test-u32-nfkc-big.c
index 84491129f4..70ceb21440 100644
--- a/tests/uninorm/test-u32-nfkc-big.c
+++ b/tests/uninorm/test-u32-nfkc-big.c
@@ -1,5 +1,5 @@
 /* Test of Unicode compliance of compatibility normalization of UTF-32 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uninorm/test-u32-nfkc.c b/tests/uninorm/test-u32-nfkc.c
index 7f8d472a28..8185210508 100644
--- a/tests/uninorm/test-u32-nfkc.c
+++ b/tests/uninorm/test-u32-nfkc.c
@@ -1,5 +1,5 @@
 /* Test of compatibility normalization of UTF-32 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uninorm/test-u32-nfkd-big.c 
b/tests/uninorm/test-u32-nfkd-big.c
index a2ca46739f..a181731d11 100644
--- a/tests/uninorm/test-u32-nfkd-big.c
+++ b/tests/uninorm/test-u32-nfkd-big.c
@@ -1,5 +1,5 @@
 /* Test of Unicode compliance of compatibility decomposition of UTF-32 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uninorm/test-u32-nfkd.c b/tests/uninorm/test-u32-nfkd.c
index 3cbb5f7b87..cbffcc7c06 100644
--- a/tests/uninorm/test-u32-nfkd.c
+++ b/tests/uninorm/test-u32-nfkd.c
@@ -1,5 +1,5 @@
 /* Test of compatibility decomposition of UTF-32 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uninorm/test-u32-normalize-big.c 
b/tests/uninorm/test-u32-normalize-big.c
index 40ef55cc8f..b1bf4ee872 100644
--- a/tests/uninorm/test-u32-normalize-big.c
+++ b/tests/uninorm/test-u32-normalize-big.c
@@ -1,5 +1,5 @@
 /* Test of Unicode compliance of normalization of UTF-32 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uninorm/test-u32-normalize-big.h 
b/tests/uninorm/test-u32-normalize-big.h
index 79b1626423..2b2c34caef 100644
--- a/tests/uninorm/test-u32-normalize-big.h
+++ b/tests/uninorm/test-u32-normalize-big.h
@@ -1,5 +1,5 @@
 /* Test of Unicode compliance of normalization of UTF-32 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uninorm/test-u32-normcmp.c b/tests/uninorm/test-u32-normcmp.c
index 577edf6ba5..e451118963 100644
--- a/tests/uninorm/test-u32-normcmp.c
+++ b/tests/uninorm/test-u32-normcmp.c
@@ -1,5 +1,5 @@
 /* Test of normalization insensitive comparison of UTF-32 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uninorm/test-u32-normcmp.h b/tests/uninorm/test-u32-normcmp.h
index 1597c88eef..1d1a2a8741 100644
--- a/tests/uninorm/test-u32-normcmp.h
+++ b/tests/uninorm/test-u32-normcmp.h
@@ -1,5 +1,5 @@
 /* Test of normalization insensitive comparison of UTF-32 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uninorm/test-u32-normcoll.c 
b/tests/uninorm/test-u32-normcoll.c
index 492475cc37..49132aad0b 100644
--- a/tests/uninorm/test-u32-normcoll.c
+++ b/tests/uninorm/test-u32-normcoll.c
@@ -1,6 +1,6 @@
 /* Test of locale dependent, normalization insensitive comparison of
    UTF-32 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uninorm/test-u8-nfc.c b/tests/uninorm/test-u8-nfc.c
index bfc562409a..4c8b086abb 100644
--- a/tests/uninorm/test-u8-nfc.c
+++ b/tests/uninorm/test-u8-nfc.c
@@ -1,5 +1,5 @@
 /* Test of canonical normalization of UTF-8 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uninorm/test-u8-nfd.c b/tests/uninorm/test-u8-nfd.c
index e5e3ac693c..0b67c5d4ce 100644
--- a/tests/uninorm/test-u8-nfd.c
+++ b/tests/uninorm/test-u8-nfd.c
@@ -1,5 +1,5 @@
 /* Test of canonical decomposition of UTF-8 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uninorm/test-u8-nfkc.c b/tests/uninorm/test-u8-nfkc.c
index f59bc036eb..86d5d1a3f8 100644
--- a/tests/uninorm/test-u8-nfkc.c
+++ b/tests/uninorm/test-u8-nfkc.c
@@ -1,5 +1,5 @@
 /* Test of compatibility normalization of UTF-8 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uninorm/test-u8-nfkd.c b/tests/uninorm/test-u8-nfkd.c
index 4fb89a5b78..cb24c4d449 100644
--- a/tests/uninorm/test-u8-nfkd.c
+++ b/tests/uninorm/test-u8-nfkd.c
@@ -1,5 +1,5 @@
 /* Test of compatibility decomposition of UTF-8 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uninorm/test-u8-normcmp.c b/tests/uninorm/test-u8-normcmp.c
index 9d665e631c..e14af49b5a 100644
--- a/tests/uninorm/test-u8-normcmp.c
+++ b/tests/uninorm/test-u8-normcmp.c
@@ -1,5 +1,5 @@
 /* Test of normalization insensitive comparison of UTF-8 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uninorm/test-u8-normcmp.h b/tests/uninorm/test-u8-normcmp.h
index c853c4a957..e424c52b1d 100644
--- a/tests/uninorm/test-u8-normcmp.h
+++ b/tests/uninorm/test-u8-normcmp.h
@@ -1,5 +1,5 @@
 /* Test of normalization insensitive comparison of UTF-8 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uninorm/test-u8-normcoll.c b/tests/uninorm/test-u8-normcoll.c
index a113b4f5da..23a89dd0bb 100644
--- a/tests/uninorm/test-u8-normcoll.c
+++ b/tests/uninorm/test-u8-normcoll.c
@@ -1,6 +1,6 @@
 /* Test of locale dependent, normalization insensitive comparison of
    UTF-8 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uninorm/test-uninorm-filter-nfc.c 
b/tests/uninorm/test-uninorm-filter-nfc.c
index ea9cdc0a98..27a97a7813 100644
--- a/tests/uninorm/test-uninorm-filter-nfc.c
+++ b/tests/uninorm/test-uninorm-filter-nfc.c
@@ -1,5 +1,5 @@
 /* Test of canonical normalization of streams.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistdio/test-u16-asnprintf1.c 
b/tests/unistdio/test-u16-asnprintf1.c
index a95e6bfc5f..f556716c62 100644
--- a/tests/unistdio/test-u16-asnprintf1.c
+++ b/tests/unistdio/test-u16-asnprintf1.c
@@ -1,5 +1,5 @@
 /* Test of u16_asnprintf() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistdio/test-u16-asnprintf1.h 
b/tests/unistdio/test-u16-asnprintf1.h
index 4145ae87b9..b48ecc4d34 100644
--- a/tests/unistdio/test-u16-asnprintf1.h
+++ b/tests/unistdio/test-u16-asnprintf1.h
@@ -1,5 +1,5 @@
 /* Test of u16_[v]asnprintf() function.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistdio/test-u16-printf1.h 
b/tests/unistdio/test-u16-printf1.h
index 7690978d2f..54fce5630c 100644
--- a/tests/unistdio/test-u16-printf1.h
+++ b/tests/unistdio/test-u16-printf1.h
@@ -1,5 +1,5 @@
 /* Test of u16_v[a]s[n]printf() function.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistdio/test-u16-vasnprintf1.c 
b/tests/unistdio/test-u16-vasnprintf1.c
index de705ae670..337befc43b 100644
--- a/tests/unistdio/test-u16-vasnprintf1.c
+++ b/tests/unistdio/test-u16-vasnprintf1.c
@@ -1,5 +1,5 @@
 /* Test of u16_vasnprintf() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistdio/test-u16-vasnprintf2.c 
b/tests/unistdio/test-u16-vasnprintf2.c
index ec5d790e7f..9fe2ae88c4 100644
--- a/tests/unistdio/test-u16-vasnprintf2.c
+++ b/tests/unistdio/test-u16-vasnprintf2.c
@@ -1,5 +1,5 @@
 /* Test of u16_vasnprintf() function in an ISO-8859-1 locale.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistdio/test-u16-vasnprintf3.c 
b/tests/unistdio/test-u16-vasnprintf3.c
index 97f3c69d99..385aeef75b 100644
--- a/tests/unistdio/test-u16-vasnprintf3.c
+++ b/tests/unistdio/test-u16-vasnprintf3.c
@@ -1,5 +1,5 @@
 /* Test of u16_vasnprintf() function in an UTF-8 locale.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistdio/test-u16-vasprintf1.c 
b/tests/unistdio/test-u16-vasprintf1.c
index 1d00ec9302..49383a44df 100644
--- a/tests/unistdio/test-u16-vasprintf1.c
+++ b/tests/unistdio/test-u16-vasprintf1.c
@@ -1,5 +1,5 @@
 /* Test of u16_vasprintf() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistdio/test-u16-vsnprintf1.c 
b/tests/unistdio/test-u16-vsnprintf1.c
index 27f3871af2..a7a4f49467 100644
--- a/tests/unistdio/test-u16-vsnprintf1.c
+++ b/tests/unistdio/test-u16-vsnprintf1.c
@@ -1,5 +1,5 @@
 /* Test of u16_vsnprintf() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistdio/test-u16-vsprintf1.c 
b/tests/unistdio/test-u16-vsprintf1.c
index ab4d9d5701..235fb0bd66 100644
--- a/tests/unistdio/test-u16-vsprintf1.c
+++ b/tests/unistdio/test-u16-vsprintf1.c
@@ -1,5 +1,5 @@
 /* Test of u16_vsprintf() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistdio/test-u32-asnprintf1.c 
b/tests/unistdio/test-u32-asnprintf1.c
index aebc798e6e..51e5168a2d 100644
--- a/tests/unistdio/test-u32-asnprintf1.c
+++ b/tests/unistdio/test-u32-asnprintf1.c
@@ -1,5 +1,5 @@
 /* Test of u32_asnprintf() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistdio/test-u32-asnprintf1.h 
b/tests/unistdio/test-u32-asnprintf1.h
index b654c59a8e..e39d98e8cd 100644
--- a/tests/unistdio/test-u32-asnprintf1.h
+++ b/tests/unistdio/test-u32-asnprintf1.h
@@ -1,5 +1,5 @@
 /* Test of u32_[v]asnprintf() function.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistdio/test-u32-printf1.h 
b/tests/unistdio/test-u32-printf1.h
index d3e10e92c5..9d2107b852 100644
--- a/tests/unistdio/test-u32-printf1.h
+++ b/tests/unistdio/test-u32-printf1.h
@@ -1,5 +1,5 @@
 /* Test of u32_v[a]s[n]printf() function.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistdio/test-u32-vasnprintf1.c 
b/tests/unistdio/test-u32-vasnprintf1.c
index 553ee2d56a..2c7bdea676 100644
--- a/tests/unistdio/test-u32-vasnprintf1.c
+++ b/tests/unistdio/test-u32-vasnprintf1.c
@@ -1,5 +1,5 @@
 /* Test of u32_vasnprintf() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistdio/test-u32-vasnprintf2.c 
b/tests/unistdio/test-u32-vasnprintf2.c
index 7d82cfc61d..40015905d5 100644
--- a/tests/unistdio/test-u32-vasnprintf2.c
+++ b/tests/unistdio/test-u32-vasnprintf2.c
@@ -1,5 +1,5 @@
 /* Test of u32_vasnprintf() function in an ISO-8859-1 locale.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistdio/test-u32-vasnprintf3.c 
b/tests/unistdio/test-u32-vasnprintf3.c
index 3509f6ffbd..00a2d4287f 100644
--- a/tests/unistdio/test-u32-vasnprintf3.c
+++ b/tests/unistdio/test-u32-vasnprintf3.c
@@ -1,5 +1,5 @@
 /* Test of u32_vasnprintf() function in an UTF-8 locale.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistdio/test-u32-vasprintf1.c 
b/tests/unistdio/test-u32-vasprintf1.c
index 41084b6d81..a4cd5778b4 100644
--- a/tests/unistdio/test-u32-vasprintf1.c
+++ b/tests/unistdio/test-u32-vasprintf1.c
@@ -1,5 +1,5 @@
 /* Test of u32_vasprintf() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistdio/test-u32-vsnprintf1.c 
b/tests/unistdio/test-u32-vsnprintf1.c
index bae3adca88..a9b9ac589d 100644
--- a/tests/unistdio/test-u32-vsnprintf1.c
+++ b/tests/unistdio/test-u32-vsnprintf1.c
@@ -1,5 +1,5 @@
 /* Test of u32_vsnprintf() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistdio/test-u32-vsprintf1.c 
b/tests/unistdio/test-u32-vsprintf1.c
index 27b0065ca3..d199396e53 100644
--- a/tests/unistdio/test-u32-vsprintf1.c
+++ b/tests/unistdio/test-u32-vsprintf1.c
@@ -1,5 +1,5 @@
 /* Test of u32_vsprintf() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistdio/test-u8-asnprintf1.c 
b/tests/unistdio/test-u8-asnprintf1.c
index 058b77142c..d40151ed8a 100644
--- a/tests/unistdio/test-u8-asnprintf1.c
+++ b/tests/unistdio/test-u8-asnprintf1.c
@@ -1,5 +1,5 @@
 /* Test of u8_asnprintf() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistdio/test-u8-asnprintf1.h 
b/tests/unistdio/test-u8-asnprintf1.h
index 6aeeae3125..bfce446e92 100644
--- a/tests/unistdio/test-u8-asnprintf1.h
+++ b/tests/unistdio/test-u8-asnprintf1.h
@@ -1,5 +1,5 @@
 /* Test of u8_[v]asnprintf() function.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistdio/test-u8-printf1.h b/tests/unistdio/test-u8-printf1.h
index 5a8201486d..96673ba1ac 100644
--- a/tests/unistdio/test-u8-printf1.h
+++ b/tests/unistdio/test-u8-printf1.h
@@ -1,5 +1,5 @@
 /* Test of u8_v[a]s[n]printf() function.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistdio/test-u8-vasnprintf1.c 
b/tests/unistdio/test-u8-vasnprintf1.c
index 94b9c8d7ee..ec5a4588ce 100644
--- a/tests/unistdio/test-u8-vasnprintf1.c
+++ b/tests/unistdio/test-u8-vasnprintf1.c
@@ -1,5 +1,5 @@
 /* Test of u8_vasnprintf() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistdio/test-u8-vasnprintf2.c 
b/tests/unistdio/test-u8-vasnprintf2.c
index 745550b1cc..dbb5c9e88e 100644
--- a/tests/unistdio/test-u8-vasnprintf2.c
+++ b/tests/unistdio/test-u8-vasnprintf2.c
@@ -1,5 +1,5 @@
 /* Test of u8_vasnprintf() function in an ISO-8859-1 locale.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistdio/test-u8-vasnprintf3.c 
b/tests/unistdio/test-u8-vasnprintf3.c
index 5f601abde0..33e68e6dbe 100644
--- a/tests/unistdio/test-u8-vasnprintf3.c
+++ b/tests/unistdio/test-u8-vasnprintf3.c
@@ -1,5 +1,5 @@
 /* Test of u8_vasnprintf() function in an UTF-8 locale.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistdio/test-u8-vasprintf1.c 
b/tests/unistdio/test-u8-vasprintf1.c
index ec7e773f2b..4be3a4395d 100644
--- a/tests/unistdio/test-u8-vasprintf1.c
+++ b/tests/unistdio/test-u8-vasprintf1.c
@@ -1,5 +1,5 @@
 /* Test of u8_vasprintf() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistdio/test-u8-vsnprintf1.c 
b/tests/unistdio/test-u8-vsnprintf1.c
index 89274aa09a..8056ac730c 100644
--- a/tests/unistdio/test-u8-vsnprintf1.c
+++ b/tests/unistdio/test-u8-vsnprintf1.c
@@ -1,5 +1,5 @@
 /* Test of u8_vsnprintf() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistdio/test-u8-vsprintf1.c 
b/tests/unistdio/test-u8-vsprintf1.c
index 821880be00..08eced9406 100644
--- a/tests/unistdio/test-u8-vsprintf1.c
+++ b/tests/unistdio/test-u8-vsprintf1.c
@@ -1,5 +1,5 @@
 /* Test of u8_vsprintf() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistdio/test-ulc-asnprintf1.c 
b/tests/unistdio/test-ulc-asnprintf1.c
index 4cad53d5a5..22cb2aeb18 100644
--- a/tests/unistdio/test-ulc-asnprintf1.c
+++ b/tests/unistdio/test-ulc-asnprintf1.c
@@ -1,5 +1,5 @@
 /* Test of ulc_asnprintf() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistdio/test-ulc-asnprintf1.h 
b/tests/unistdio/test-ulc-asnprintf1.h
index 3631c26ec0..fe249eb843 100644
--- a/tests/unistdio/test-ulc-asnprintf1.h
+++ b/tests/unistdio/test-ulc-asnprintf1.h
@@ -1,5 +1,5 @@
 /* Test of ulc_[v]asnprintf() functions.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistdio/test-ulc-printf1.h 
b/tests/unistdio/test-ulc-printf1.h
index a15effbb42..cd6c66bf82 100644
--- a/tests/unistdio/test-ulc-printf1.h
+++ b/tests/unistdio/test-ulc-printf1.h
@@ -1,5 +1,5 @@
 /* Test of ulc_v[a]s[n]printf() functions.
-   Copyright (C) 2007, 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistdio/test-ulc-vasnprintf1.c 
b/tests/unistdio/test-ulc-vasnprintf1.c
index d6ea67dd89..09df288168 100644
--- a/tests/unistdio/test-ulc-vasnprintf1.c
+++ b/tests/unistdio/test-ulc-vasnprintf1.c
@@ -1,5 +1,5 @@
 /* Test of ulc_vasnprintf() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistdio/test-ulc-vasnprintf2.c 
b/tests/unistdio/test-ulc-vasnprintf2.c
index f53ff50f55..7731a75863 100644
--- a/tests/unistdio/test-ulc-vasnprintf2.c
+++ b/tests/unistdio/test-ulc-vasnprintf2.c
@@ -1,5 +1,5 @@
 /* Test of ulc_vasnprintf() function in an ISO-8859-1 locale.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistdio/test-ulc-vasnprintf3.c 
b/tests/unistdio/test-ulc-vasnprintf3.c
index 6bc2c9b53d..db01e83904 100644
--- a/tests/unistdio/test-ulc-vasnprintf3.c
+++ b/tests/unistdio/test-ulc-vasnprintf3.c
@@ -1,5 +1,5 @@
 /* Test of ulc_vasnprintf() function in an UTF-8 locale.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistdio/test-ulc-vasprintf1.c 
b/tests/unistdio/test-ulc-vasprintf1.c
index ec523ff4a0..76f762bcd8 100644
--- a/tests/unistdio/test-ulc-vasprintf1.c
+++ b/tests/unistdio/test-ulc-vasprintf1.c
@@ -1,5 +1,5 @@
 /* Test of ulc_vasprintf() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistdio/test-ulc-vsnprintf1.c 
b/tests/unistdio/test-ulc-vsnprintf1.c
index c282ff9956..b68ae29233 100644
--- a/tests/unistdio/test-ulc-vsnprintf1.c
+++ b/tests/unistdio/test-ulc-vsnprintf1.c
@@ -1,5 +1,5 @@
 /* Test of ulc_vsnprintf() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistdio/test-ulc-vsprintf1.c 
b/tests/unistdio/test-ulc-vsprintf1.c
index 9e9af160a2..b5ae743d10 100644
--- a/tests/unistdio/test-ulc-vsprintf1.c
+++ b/tests/unistdio/test-ulc-vsprintf1.c
@@ -1,5 +1,5 @@
 /* Test of ulc_vsprintf() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-chr.h b/tests/unistr/test-chr.h
index f8f87015b8..47d6612d7e 100644
--- a/tests/unistr/test-chr.h
+++ b/tests/unistr/test-chr.h
@@ -1,5 +1,5 @@
 /* Test of uN_chr() functions.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-cmp.h b/tests/unistr/test-cmp.h
index c7c924347a..df5c3d11cd 100644
--- a/tests/unistr/test-cmp.h
+++ b/tests/unistr/test-cmp.h
@@ -1,5 +1,5 @@
 /* Test of uN_cmp() functions.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-cmp2.h b/tests/unistr/test-cmp2.h
index 8fe88c54cc..e3e7d10241 100644
--- a/tests/unistr/test-cmp2.h
+++ b/tests/unistr/test-cmp2.h
@@ -1,5 +1,5 @@
 /* Test of uN_cmp2() functions.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-cpy-alloc.h b/tests/unistr/test-cpy-alloc.h
index 5fa46a7447..62f739d161 100644
--- a/tests/unistr/test-cpy-alloc.h
+++ b/tests/unistr/test-cpy-alloc.h
@@ -1,5 +1,5 @@
 /* Test of uN_cpy_alloc() functions.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-cpy.h b/tests/unistr/test-cpy.h
index 12379bb269..5a81f9cdd0 100644
--- a/tests/unistr/test-cpy.h
+++ b/tests/unistr/test-cpy.h
@@ -1,5 +1,5 @@
 /* Test of uN_cpy() functions.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-move.h b/tests/unistr/test-move.h
index fd13b4ccaa..5401e8352d 100644
--- a/tests/unistr/test-move.h
+++ b/tests/unistr/test-move.h
@@ -1,5 +1,5 @@
 /* Test of uN_move() functions.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-set.h b/tests/unistr/test-set.h
index 24330260fd..2eb6c7476d 100644
--- a/tests/unistr/test-set.h
+++ b/tests/unistr/test-set.h
@@ -1,5 +1,5 @@
 /* Test of uN_set() functions.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-stpcpy.h b/tests/unistr/test-stpcpy.h
index 5b1d66152c..eba671b208 100644
--- a/tests/unistr/test-stpcpy.h
+++ b/tests/unistr/test-stpcpy.h
@@ -1,5 +1,5 @@
 /* Test of uN_stpcpy() functions.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-stpncpy.h b/tests/unistr/test-stpncpy.h
index 34503bd273..4a8046c201 100644
--- a/tests/unistr/test-stpncpy.h
+++ b/tests/unistr/test-stpncpy.h
@@ -1,5 +1,5 @@
 /* Test of uN_stpncpy() functions.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-strcat.h b/tests/unistr/test-strcat.h
index 906528ff82..f18702be23 100644
--- a/tests/unistr/test-strcat.h
+++ b/tests/unistr/test-strcat.h
@@ -1,5 +1,5 @@
 /* Test of uN_strcat() functions.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-strchr.h b/tests/unistr/test-strchr.h
index 52768a4b3c..6d932045d8 100644
--- a/tests/unistr/test-strchr.h
+++ b/tests/unistr/test-strchr.h
@@ -1,5 +1,5 @@
 /* Test of uN_strchr() functions.
-   Copyright (C) 2008-2022 Free Software Foundation, Inc.
+   Copyright (C) 2008-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-strcmp.h b/tests/unistr/test-strcmp.h
index aeba3549d0..a72b55f8ff 100644
--- a/tests/unistr/test-strcmp.h
+++ b/tests/unistr/test-strcmp.h
@@ -1,5 +1,5 @@
 /* Test of uN_strcmp() and uN_strcoll() functions.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-strcpy.h b/tests/unistr/test-strcpy.h
index 1f145032ce..4e913e4589 100644
--- a/tests/unistr/test-strcpy.h
+++ b/tests/unistr/test-strcpy.h
@@ -1,5 +1,5 @@
 /* Test of uN_strcpy() functions.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-strdup.h b/tests/unistr/test-strdup.h
index 298a04598b..d4e50655fd 100644
--- a/tests/unistr/test-strdup.h
+++ b/tests/unistr/test-strdup.h
@@ -1,5 +1,5 @@
 /* Test of uN_strdup() functions.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-strncat.h b/tests/unistr/test-strncat.h
index c66583ec9a..b6f2026b43 100644
--- a/tests/unistr/test-strncat.h
+++ b/tests/unistr/test-strncat.h
@@ -1,5 +1,5 @@
 /* Test of uN_strncat() functions.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-strncmp.h b/tests/unistr/test-strncmp.h
index 8fdc4d99db..71e4cb7d22 100644
--- a/tests/unistr/test-strncmp.h
+++ b/tests/unistr/test-strncmp.h
@@ -1,5 +1,5 @@
 /* Test of uN_strncmp() functions.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-strncpy.h b/tests/unistr/test-strncpy.h
index f2774fb0e3..68827cfce2 100644
--- a/tests/unistr/test-strncpy.h
+++ b/tests/unistr/test-strncpy.h
@@ -1,5 +1,5 @@
 /* Test of uN_strncpy() functions.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-strnlen.h b/tests/unistr/test-strnlen.h
index ba3c0cfd05..aeefbb559d 100644
--- a/tests/unistr/test-strnlen.h
+++ b/tests/unistr/test-strnlen.h
@@ -1,5 +1,5 @@
 /* Test of uN_strnlen() functions.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u-strstr.h b/tests/unistr/test-u-strstr.h
index d53183e18e..b97badc005 100644
--- a/tests/unistr/test-u-strstr.h
+++ b/tests/unistr/test-u-strstr.h
@@ -1,5 +1,5 @@
 /* Test of uN_strstr() functions.
-   Copyright (C) 2004, 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2004, 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u-strtok.h b/tests/unistr/test-u-strtok.h
index 15389ac1aa..a156d58d24 100644
--- a/tests/unistr/test-u-strtok.h
+++ b/tests/unistr/test-u-strtok.h
@@ -1,5 +1,5 @@
 /* Test of uN_strtok() functions.
-   Copyright (C) 2015-2022 Free Software Foundation, Inc.
+   Copyright (C) 2015-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u16-check.c b/tests/unistr/test-u16-check.c
index eb7b99880b..ff69123e35 100644
--- a/tests/unistr/test-u16-check.c
+++ b/tests/unistr/test-u16-check.c
@@ -1,5 +1,5 @@
 /* Test of u16_check() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u16-chr.c b/tests/unistr/test-u16-chr.c
index 6e6e1069be..f2d5c3a01e 100644
--- a/tests/unistr/test-u16-chr.c
+++ b/tests/unistr/test-u16-chr.c
@@ -1,5 +1,5 @@
 /* Test of u16_chr() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u16-cmp.c b/tests/unistr/test-u16-cmp.c
index 393fa9d79a..9d1c8f464c 100644
--- a/tests/unistr/test-u16-cmp.c
+++ b/tests/unistr/test-u16-cmp.c
@@ -1,5 +1,5 @@
 /* Test of u16_cmp() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u16-cmp2.c b/tests/unistr/test-u16-cmp2.c
index e25fe1a679..fd144cc371 100644
--- a/tests/unistr/test-u16-cmp2.c
+++ b/tests/unistr/test-u16-cmp2.c
@@ -1,5 +1,5 @@
 /* Test of u16_cmp2() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u16-cpy-alloc.c 
b/tests/unistr/test-u16-cpy-alloc.c
index 80e8999d8f..b4f1de77f1 100644
--- a/tests/unistr/test-u16-cpy-alloc.c
+++ b/tests/unistr/test-u16-cpy-alloc.c
@@ -1,5 +1,5 @@
 /* Test of u16_cpy_alloc() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u16-cpy.c b/tests/unistr/test-u16-cpy.c
index be7f11aa83..213d05b553 100644
--- a/tests/unistr/test-u16-cpy.c
+++ b/tests/unistr/test-u16-cpy.c
@@ -1,5 +1,5 @@
 /* Test of u16_cpy() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u16-mblen.c b/tests/unistr/test-u16-mblen.c
index 603cfe1f19..bf089bca81 100644
--- a/tests/unistr/test-u16-mblen.c
+++ b/tests/unistr/test-u16-mblen.c
@@ -1,5 +1,5 @@
 /* Test of u16_mblen() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u16-mbsnlen.c b/tests/unistr/test-u16-mbsnlen.c
index 02bf203020..ae7186af8c 100644
--- a/tests/unistr/test-u16-mbsnlen.c
+++ b/tests/unistr/test-u16-mbsnlen.c
@@ -1,5 +1,5 @@
 /* Test of u16_mbsnlen() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u16-mbtouc-unsafe.c 
b/tests/unistr/test-u16-mbtouc-unsafe.c
index 06d4e4283e..92a44a1ab3 100644
--- a/tests/unistr/test-u16-mbtouc-unsafe.c
+++ b/tests/unistr/test-u16-mbtouc-unsafe.c
@@ -1,5 +1,5 @@
 /* Test of u16_mbtouc_unsafe() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u16-mbtouc.c b/tests/unistr/test-u16-mbtouc.c
index 57a2b663ec..c93025a978 100644
--- a/tests/unistr/test-u16-mbtouc.c
+++ b/tests/unistr/test-u16-mbtouc.c
@@ -1,5 +1,5 @@
 /* Test of u16_mbtouc() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u16-mbtouc.h b/tests/unistr/test-u16-mbtouc.h
index a44a998d62..97c4bf9836 100644
--- a/tests/unistr/test-u16-mbtouc.h
+++ b/tests/unistr/test-u16-mbtouc.h
@@ -1,5 +1,5 @@
 /* Test of u16_mbtouc() and u16_mbtouc_unsafe() functions.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u16-mbtoucr.c b/tests/unistr/test-u16-mbtoucr.c
index dfdab67dc7..d13071274e 100644
--- a/tests/unistr/test-u16-mbtoucr.c
+++ b/tests/unistr/test-u16-mbtoucr.c
@@ -1,5 +1,5 @@
 /* Test of u16_mbtoucr() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u16-move.c b/tests/unistr/test-u16-move.c
index 8e050d4480..422eb813b2 100644
--- a/tests/unistr/test-u16-move.c
+++ b/tests/unistr/test-u16-move.c
@@ -1,5 +1,5 @@
 /* Test of u16_move() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u16-next.c b/tests/unistr/test-u16-next.c
index e2022898df..f522d28510 100644
--- a/tests/unistr/test-u16-next.c
+++ b/tests/unistr/test-u16-next.c
@@ -1,5 +1,5 @@
 /* Test of u16_next() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u16-prev.c b/tests/unistr/test-u16-prev.c
index c7400dc556..4e3501c01a 100644
--- a/tests/unistr/test-u16-prev.c
+++ b/tests/unistr/test-u16-prev.c
@@ -1,5 +1,5 @@
 /* Test of u16_prev() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u16-set.c b/tests/unistr/test-u16-set.c
index a5270d10a6..52dafecaf8 100644
--- a/tests/unistr/test-u16-set.c
+++ b/tests/unistr/test-u16-set.c
@@ -1,5 +1,5 @@
 /* Test of u16_set() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u16-stpcpy.c b/tests/unistr/test-u16-stpcpy.c
index 5f18e011c5..098c998d1a 100644
--- a/tests/unistr/test-u16-stpcpy.c
+++ b/tests/unistr/test-u16-stpcpy.c
@@ -1,5 +1,5 @@
 /* Test of u16_stpcpy() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u16-stpncpy.c b/tests/unistr/test-u16-stpncpy.c
index 104ea16cda..02535cd5d2 100644
--- a/tests/unistr/test-u16-stpncpy.c
+++ b/tests/unistr/test-u16-stpncpy.c
@@ -1,5 +1,5 @@
 /* Test of u16_stpncpy() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u16-strcat.c b/tests/unistr/test-u16-strcat.c
index de5448b2b0..4c06d5d97c 100644
--- a/tests/unistr/test-u16-strcat.c
+++ b/tests/unistr/test-u16-strcat.c
@@ -1,5 +1,5 @@
 /* Test of u16_strcat() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u16-strchr.c b/tests/unistr/test-u16-strchr.c
index f4ec688141..df7251ee7a 100644
--- a/tests/unistr/test-u16-strchr.c
+++ b/tests/unistr/test-u16-strchr.c
@@ -1,5 +1,5 @@
 /* Test of u16_strchr() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u16-strcmp.c b/tests/unistr/test-u16-strcmp.c
index 7ab3e83110..b49f7215d9 100644
--- a/tests/unistr/test-u16-strcmp.c
+++ b/tests/unistr/test-u16-strcmp.c
@@ -1,5 +1,5 @@
 /* Test of u16_strcmp() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u16-strcmp.h b/tests/unistr/test-u16-strcmp.h
index 84b8d511ca..4adbc6d986 100644
--- a/tests/unistr/test-u16-strcmp.h
+++ b/tests/unistr/test-u16-strcmp.h
@@ -1,5 +1,5 @@
 /* Test of u16_strcmp() and u16_strcoll() functions.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u16-strcoll.c b/tests/unistr/test-u16-strcoll.c
index 9ea43bcac6..0a6f990f5d 100644
--- a/tests/unistr/test-u16-strcoll.c
+++ b/tests/unistr/test-u16-strcoll.c
@@ -1,5 +1,5 @@
 /* Test of u16_strcoll() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u16-strcpy.c b/tests/unistr/test-u16-strcpy.c
index 7f0e01e6c3..14070ec44f 100644
--- a/tests/unistr/test-u16-strcpy.c
+++ b/tests/unistr/test-u16-strcpy.c
@@ -1,5 +1,5 @@
 /* Test of u16_strcpy() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u16-strdup.c b/tests/unistr/test-u16-strdup.c
index 798831e1c7..9d9189fe13 100644
--- a/tests/unistr/test-u16-strdup.c
+++ b/tests/unistr/test-u16-strdup.c
@@ -1,5 +1,5 @@
 /* Test of u16_strdup() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u16-strlen.c b/tests/unistr/test-u16-strlen.c
index 68198a41c7..71af4544f2 100644
--- a/tests/unistr/test-u16-strlen.c
+++ b/tests/unistr/test-u16-strlen.c
@@ -1,5 +1,5 @@
 /* Test of u16_strlen() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u16-strmblen.c b/tests/unistr/test-u16-strmblen.c
index f31d824cfb..d2763a3f4e 100644
--- a/tests/unistr/test-u16-strmblen.c
+++ b/tests/unistr/test-u16-strmblen.c
@@ -1,5 +1,5 @@
 /* Test of u16_strmblen() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u16-strmbtouc.c 
b/tests/unistr/test-u16-strmbtouc.c
index bb7a5ca991..d496a53623 100644
--- a/tests/unistr/test-u16-strmbtouc.c
+++ b/tests/unistr/test-u16-strmbtouc.c
@@ -1,5 +1,5 @@
 /* Test of u16_strmbtouc() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u16-strncat.c b/tests/unistr/test-u16-strncat.c
index 9eda6e1535..da359be12a 100644
--- a/tests/unistr/test-u16-strncat.c
+++ b/tests/unistr/test-u16-strncat.c
@@ -1,5 +1,5 @@
 /* Test of u16_strncat() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u16-strncmp.c b/tests/unistr/test-u16-strncmp.c
index 3d03a7a277..dd049b22e5 100644
--- a/tests/unistr/test-u16-strncmp.c
+++ b/tests/unistr/test-u16-strncmp.c
@@ -1,5 +1,5 @@
 /* Test of u16_strncmp() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u16-strncpy.c b/tests/unistr/test-u16-strncpy.c
index 184c63112c..3377741c62 100644
--- a/tests/unistr/test-u16-strncpy.c
+++ b/tests/unistr/test-u16-strncpy.c
@@ -1,5 +1,5 @@
 /* Test of u16_strncpy() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u16-strnlen.c b/tests/unistr/test-u16-strnlen.c
index 9258b965d8..1c47b68377 100644
--- a/tests/unistr/test-u16-strnlen.c
+++ b/tests/unistr/test-u16-strnlen.c
@@ -1,5 +1,5 @@
 /* Test of u16_strnlen() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u16-strstr.c b/tests/unistr/test-u16-strstr.c
index bbad6c610b..b5cd028ff6 100644
--- a/tests/unistr/test-u16-strstr.c
+++ b/tests/unistr/test-u16-strstr.c
@@ -1,5 +1,5 @@
 /* Test of u16_strstr() function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u16-strtok.c b/tests/unistr/test-u16-strtok.c
index e226393dbf..540e910510 100644
--- a/tests/unistr/test-u16-strtok.c
+++ b/tests/unistr/test-u16-strtok.c
@@ -1,5 +1,5 @@
 /* Test of u16_strtok() function.
-   Copyright (C) 2015-2022 Free Software Foundation, Inc.
+   Copyright (C) 2015-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u16-to-u32.c b/tests/unistr/test-u16-to-u32.c
index de19d5a6d1..aaa1b46679 100644
--- a/tests/unistr/test-u16-to-u32.c
+++ b/tests/unistr/test-u16-to-u32.c
@@ -1,5 +1,5 @@
 /* Test of u16_to_u32() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u16-to-u8.c b/tests/unistr/test-u16-to-u8.c
index acbad8ace0..55ca22f114 100644
--- a/tests/unistr/test-u16-to-u8.c
+++ b/tests/unistr/test-u16-to-u8.c
@@ -1,5 +1,5 @@
 /* Test of u16_to_u8() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u16-uctomb.c b/tests/unistr/test-u16-uctomb.c
index 3408cba324..67854a26f4 100644
--- a/tests/unistr/test-u16-uctomb.c
+++ b/tests/unistr/test-u16-uctomb.c
@@ -1,5 +1,5 @@
 /* Test of u16_uctomb() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u32-check.c b/tests/unistr/test-u32-check.c
index 9b43b03e76..2413bf3f1e 100644
--- a/tests/unistr/test-u32-check.c
+++ b/tests/unistr/test-u32-check.c
@@ -1,5 +1,5 @@
 /* Test of u32_check() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u32-chr.c b/tests/unistr/test-u32-chr.c
index 7cd3912daf..d12aad3528 100644
--- a/tests/unistr/test-u32-chr.c
+++ b/tests/unistr/test-u32-chr.c
@@ -1,5 +1,5 @@
 /* Test of u32_chr() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u32-cmp.c b/tests/unistr/test-u32-cmp.c
index d76024a292..68e1ec6a62 100644
--- a/tests/unistr/test-u32-cmp.c
+++ b/tests/unistr/test-u32-cmp.c
@@ -1,5 +1,5 @@
 /* Test of u32_cmp() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u32-cmp2.c b/tests/unistr/test-u32-cmp2.c
index b3d249dafb..0684612028 100644
--- a/tests/unistr/test-u32-cmp2.c
+++ b/tests/unistr/test-u32-cmp2.c
@@ -1,5 +1,5 @@
 /* Test of u32_cmp2() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u32-cpy-alloc.c 
b/tests/unistr/test-u32-cpy-alloc.c
index f912311545..efec893935 100644
--- a/tests/unistr/test-u32-cpy-alloc.c
+++ b/tests/unistr/test-u32-cpy-alloc.c
@@ -1,5 +1,5 @@
 /* Test of u32_cpy_alloc() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u32-cpy.c b/tests/unistr/test-u32-cpy.c
index b4f8f90aa5..ef6c8827dd 100644
--- a/tests/unistr/test-u32-cpy.c
+++ b/tests/unistr/test-u32-cpy.c
@@ -1,5 +1,5 @@
 /* Test of u32_cpy() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u32-mblen.c b/tests/unistr/test-u32-mblen.c
index 6cfb22a2d4..2b1dd003be 100644
--- a/tests/unistr/test-u32-mblen.c
+++ b/tests/unistr/test-u32-mblen.c
@@ -1,5 +1,5 @@
 /* Test of u32_mblen() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u32-mbsnlen.c b/tests/unistr/test-u32-mbsnlen.c
index 4ef6e3162a..f53ea88ad1 100644
--- a/tests/unistr/test-u32-mbsnlen.c
+++ b/tests/unistr/test-u32-mbsnlen.c
@@ -1,5 +1,5 @@
 /* Test of u32_mbsnlen() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u32-mbtouc-unsafe.c 
b/tests/unistr/test-u32-mbtouc-unsafe.c
index cfe0c4ca80..cfd3cce6d7 100644
--- a/tests/unistr/test-u32-mbtouc-unsafe.c
+++ b/tests/unistr/test-u32-mbtouc-unsafe.c
@@ -1,5 +1,5 @@
 /* Test of u32_mbtouc_unsafe() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u32-mbtouc.c b/tests/unistr/test-u32-mbtouc.c
index b45e61e21d..4e92ede1be 100644
--- a/tests/unistr/test-u32-mbtouc.c
+++ b/tests/unistr/test-u32-mbtouc.c
@@ -1,5 +1,5 @@
 /* Test of u32_mbtouc() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u32-mbtouc.h b/tests/unistr/test-u32-mbtouc.h
index 1b226a162b..d407b9a149 100644
--- a/tests/unistr/test-u32-mbtouc.h
+++ b/tests/unistr/test-u32-mbtouc.h
@@ -1,5 +1,5 @@
 /* Test of u32_mbtouc() and u32_mbtouc_unsafe() functions.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u32-mbtoucr.c b/tests/unistr/test-u32-mbtoucr.c
index 30c3ca29d7..904b9c05f0 100644
--- a/tests/unistr/test-u32-mbtoucr.c
+++ b/tests/unistr/test-u32-mbtoucr.c
@@ -1,5 +1,5 @@
 /* Test of u32_mbtoucr() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u32-move.c b/tests/unistr/test-u32-move.c
index 26b730bd18..56ed713ec2 100644
--- a/tests/unistr/test-u32-move.c
+++ b/tests/unistr/test-u32-move.c
@@ -1,5 +1,5 @@
 /* Test of u32_move() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u32-next.c b/tests/unistr/test-u32-next.c
index 4210334714..f24d9e6ad4 100644
--- a/tests/unistr/test-u32-next.c
+++ b/tests/unistr/test-u32-next.c
@@ -1,5 +1,5 @@
 /* Test of u32_next() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u32-prev.c b/tests/unistr/test-u32-prev.c
index 5dd61f2745..c4f7e4402d 100644
--- a/tests/unistr/test-u32-prev.c
+++ b/tests/unistr/test-u32-prev.c
@@ -1,5 +1,5 @@
 /* Test of u32_prev() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u32-set.c b/tests/unistr/test-u32-set.c
index 6551c9d5fa..3d8d1d64ab 100644
--- a/tests/unistr/test-u32-set.c
+++ b/tests/unistr/test-u32-set.c
@@ -1,5 +1,5 @@
 /* Test of u32_set() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u32-stpcpy.c b/tests/unistr/test-u32-stpcpy.c
index 9bb5adfc8d..014abecd1a 100644
--- a/tests/unistr/test-u32-stpcpy.c
+++ b/tests/unistr/test-u32-stpcpy.c
@@ -1,5 +1,5 @@
 /* Test of u32_stpcpy() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u32-stpncpy.c b/tests/unistr/test-u32-stpncpy.c
index 667fb2211d..6451374cd9 100644
--- a/tests/unistr/test-u32-stpncpy.c
+++ b/tests/unistr/test-u32-stpncpy.c
@@ -1,5 +1,5 @@
 /* Test of u32_stpncpy() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u32-strcat.c b/tests/unistr/test-u32-strcat.c
index cf6ed7fe6f..3123124a0d 100644
--- a/tests/unistr/test-u32-strcat.c
+++ b/tests/unistr/test-u32-strcat.c
@@ -1,5 +1,5 @@
 /* Test of u32_strcat() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u32-strchr.c b/tests/unistr/test-u32-strchr.c
index 1359e1a4a8..97c1e0e681 100644
--- a/tests/unistr/test-u32-strchr.c
+++ b/tests/unistr/test-u32-strchr.c
@@ -1,5 +1,5 @@
 /* Test of u32_strchr() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u32-strcmp.c b/tests/unistr/test-u32-strcmp.c
index e59bb93e5b..53dc592f60 100644
--- a/tests/unistr/test-u32-strcmp.c
+++ b/tests/unistr/test-u32-strcmp.c
@@ -1,5 +1,5 @@
 /* Test of u32_strcmp() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u32-strcmp.h b/tests/unistr/test-u32-strcmp.h
index d32b8e0462..a92c546c8a 100644
--- a/tests/unistr/test-u32-strcmp.h
+++ b/tests/unistr/test-u32-strcmp.h
@@ -1,5 +1,5 @@
 /* Test of u32_strcmp() and u32_strcoll() functions.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u32-strcoll.c b/tests/unistr/test-u32-strcoll.c
index 73fa65aec9..3331654994 100644
--- a/tests/unistr/test-u32-strcoll.c
+++ b/tests/unistr/test-u32-strcoll.c
@@ -1,5 +1,5 @@
 /* Test of u32_strcoll() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u32-strcpy.c b/tests/unistr/test-u32-strcpy.c
index caf5d4af53..7aa5719564 100644
--- a/tests/unistr/test-u32-strcpy.c
+++ b/tests/unistr/test-u32-strcpy.c
@@ -1,5 +1,5 @@
 /* Test of u32_strcpy() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u32-strdup.c b/tests/unistr/test-u32-strdup.c
index 753e50c1cd..8dcaefbbb4 100644
--- a/tests/unistr/test-u32-strdup.c
+++ b/tests/unistr/test-u32-strdup.c
@@ -1,5 +1,5 @@
 /* Test of u32_strdup() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u32-strlen.c b/tests/unistr/test-u32-strlen.c
index 6eeb00c036..a4855273ca 100644
--- a/tests/unistr/test-u32-strlen.c
+++ b/tests/unistr/test-u32-strlen.c
@@ -1,5 +1,5 @@
 /* Test of u32_strlen() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u32-strmblen.c b/tests/unistr/test-u32-strmblen.c
index e1ced4e1d9..ed258640c1 100644
--- a/tests/unistr/test-u32-strmblen.c
+++ b/tests/unistr/test-u32-strmblen.c
@@ -1,5 +1,5 @@
 /* Test of u32_strmblen() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u32-strmbtouc.c 
b/tests/unistr/test-u32-strmbtouc.c
index 29f183168f..eba20db5f7 100644
--- a/tests/unistr/test-u32-strmbtouc.c
+++ b/tests/unistr/test-u32-strmbtouc.c
@@ -1,5 +1,5 @@
 /* Test of u32_strmbtouc() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u32-strncat.c b/tests/unistr/test-u32-strncat.c
index eac5119cf1..6d35329596 100644
--- a/tests/unistr/test-u32-strncat.c
+++ b/tests/unistr/test-u32-strncat.c
@@ -1,5 +1,5 @@
 /* Test of u32_strncat() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u32-strncmp.c b/tests/unistr/test-u32-strncmp.c
index 33b8d69ef7..05539fb37b 100644
--- a/tests/unistr/test-u32-strncmp.c
+++ b/tests/unistr/test-u32-strncmp.c
@@ -1,5 +1,5 @@
 /* Test of u32_strncmp() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u32-strncpy.c b/tests/unistr/test-u32-strncpy.c
index d65074dde4..27373983dc 100644
--- a/tests/unistr/test-u32-strncpy.c
+++ b/tests/unistr/test-u32-strncpy.c
@@ -1,5 +1,5 @@
 /* Test of u32_strncpy() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u32-strnlen.c b/tests/unistr/test-u32-strnlen.c
index 8138efe60c..bb24d53eb1 100644
--- a/tests/unistr/test-u32-strnlen.c
+++ b/tests/unistr/test-u32-strnlen.c
@@ -1,5 +1,5 @@
 /* Test of u32_strnlen() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u32-strstr.c b/tests/unistr/test-u32-strstr.c
index 6d29a69d79..9f388127a5 100644
--- a/tests/unistr/test-u32-strstr.c
+++ b/tests/unistr/test-u32-strstr.c
@@ -1,5 +1,5 @@
 /* Test of u32_strstr() function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u32-strtok.c b/tests/unistr/test-u32-strtok.c
index 442bc1a2eb..39f90b4d41 100644
--- a/tests/unistr/test-u32-strtok.c
+++ b/tests/unistr/test-u32-strtok.c
@@ -1,5 +1,5 @@
 /* Test of u32_strtok() function.
-   Copyright (C) 2015-2022 Free Software Foundation, Inc.
+   Copyright (C) 2015-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u32-to-u16.c b/tests/unistr/test-u32-to-u16.c
index ac8500894f..5224543c88 100644
--- a/tests/unistr/test-u32-to-u16.c
+++ b/tests/unistr/test-u32-to-u16.c
@@ -1,5 +1,5 @@
 /* Test of u32_to_u16() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u32-to-u8.c b/tests/unistr/test-u32-to-u8.c
index 1a02f79516..d6adf4fd79 100644
--- a/tests/unistr/test-u32-to-u8.c
+++ b/tests/unistr/test-u32-to-u8.c
@@ -1,5 +1,5 @@
 /* Test of u32_to_u8() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u32-uctomb.c b/tests/unistr/test-u32-uctomb.c
index d3b1bb6514..e5b4ead5de 100644
--- a/tests/unistr/test-u32-uctomb.c
+++ b/tests/unistr/test-u32-uctomb.c
@@ -1,5 +1,5 @@
 /* Test of u32_uctomb() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u8-check.c b/tests/unistr/test-u8-check.c
index 8e361cc82b..ccd78c6716 100644
--- a/tests/unistr/test-u8-check.c
+++ b/tests/unistr/test-u8-check.c
@@ -1,5 +1,5 @@
 /* Test of u8_check() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u8-chr.c b/tests/unistr/test-u8-chr.c
index a0a46d954a..1aad139649 100644
--- a/tests/unistr/test-u8-chr.c
+++ b/tests/unistr/test-u8-chr.c
@@ -1,5 +1,5 @@
 /* Test of u8_chr() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u8-cmp.c b/tests/unistr/test-u8-cmp.c
index 528e691e89..ac866aa77b 100644
--- a/tests/unistr/test-u8-cmp.c
+++ b/tests/unistr/test-u8-cmp.c
@@ -1,5 +1,5 @@
 /* Test of u8_cmp() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u8-cmp2.c b/tests/unistr/test-u8-cmp2.c
index 9a3b99cf01..0aafe5eee1 100644
--- a/tests/unistr/test-u8-cmp2.c
+++ b/tests/unistr/test-u8-cmp2.c
@@ -1,5 +1,5 @@
 /* Test of u8_cmp2() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u8-cpy-alloc.c b/tests/unistr/test-u8-cpy-alloc.c
index 726148e818..d17a64f6b2 100644
--- a/tests/unistr/test-u8-cpy-alloc.c
+++ b/tests/unistr/test-u8-cpy-alloc.c
@@ -1,5 +1,5 @@
 /* Test of u8_cpy_alloc() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u8-cpy.c b/tests/unistr/test-u8-cpy.c
index 58cc5f8176..92a92d8067 100644
--- a/tests/unistr/test-u8-cpy.c
+++ b/tests/unistr/test-u8-cpy.c
@@ -1,5 +1,5 @@
 /* Test of u8_cpy() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u8-mblen.c b/tests/unistr/test-u8-mblen.c
index 54dbd4b5a3..5d4f7e3be0 100644
--- a/tests/unistr/test-u8-mblen.c
+++ b/tests/unistr/test-u8-mblen.c
@@ -1,5 +1,5 @@
 /* Test of u8_mblen() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u8-mbsnlen.c b/tests/unistr/test-u8-mbsnlen.c
index 7b8f0292b4..c0b9b6e3f1 100644
--- a/tests/unistr/test-u8-mbsnlen.c
+++ b/tests/unistr/test-u8-mbsnlen.c
@@ -1,5 +1,5 @@
 /* Test of u8_mbsnlen() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u8-mbtouc-unsafe.c 
b/tests/unistr/test-u8-mbtouc-unsafe.c
index 1e29f8bcf2..d97b0f57d2 100644
--- a/tests/unistr/test-u8-mbtouc-unsafe.c
+++ b/tests/unistr/test-u8-mbtouc-unsafe.c
@@ -1,5 +1,5 @@
 /* Test of u8_mbtouc_unsafe() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u8-mbtouc.c b/tests/unistr/test-u8-mbtouc.c
index 39bcaef9e9..35c70c2193 100644
--- a/tests/unistr/test-u8-mbtouc.c
+++ b/tests/unistr/test-u8-mbtouc.c
@@ -1,5 +1,5 @@
 /* Test of u8_mbtouc() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u8-mbtouc.h b/tests/unistr/test-u8-mbtouc.h
index fcfe3df8a1..bd38c7a597 100644
--- a/tests/unistr/test-u8-mbtouc.h
+++ b/tests/unistr/test-u8-mbtouc.h
@@ -1,5 +1,5 @@
 /* Test of u8_mbtouc() and u8_mbtouc_unsafe() functions.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u8-mbtoucr.c b/tests/unistr/test-u8-mbtoucr.c
index e610260385..6628b700d3 100644
--- a/tests/unistr/test-u8-mbtoucr.c
+++ b/tests/unistr/test-u8-mbtoucr.c
@@ -1,5 +1,5 @@
 /* Test of u8_mbtoucr() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u8-move.c b/tests/unistr/test-u8-move.c
index baf074ec8a..705a4b3a5d 100644
--- a/tests/unistr/test-u8-move.c
+++ b/tests/unistr/test-u8-move.c
@@ -1,5 +1,5 @@
 /* Test of u8_move() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u8-next.c b/tests/unistr/test-u8-next.c
index e3e43121ce..88ee33ba9d 100644
--- a/tests/unistr/test-u8-next.c
+++ b/tests/unistr/test-u8-next.c
@@ -1,5 +1,5 @@
 /* Test of u8_next() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u8-prev.c b/tests/unistr/test-u8-prev.c
index 8b21ce295a..37e5951611 100644
--- a/tests/unistr/test-u8-prev.c
+++ b/tests/unistr/test-u8-prev.c
@@ -1,5 +1,5 @@
 /* Test of u8_prev() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u8-set.c b/tests/unistr/test-u8-set.c
index 223a5127b6..1f2622574c 100644
--- a/tests/unistr/test-u8-set.c
+++ b/tests/unistr/test-u8-set.c
@@ -1,5 +1,5 @@
 /* Test of u8_set() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u8-stpcpy.c b/tests/unistr/test-u8-stpcpy.c
index daeb6ae9fe..2928d7697d 100644
--- a/tests/unistr/test-u8-stpcpy.c
+++ b/tests/unistr/test-u8-stpcpy.c
@@ -1,5 +1,5 @@
 /* Test of u8_stpcpy() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u8-stpncpy.c b/tests/unistr/test-u8-stpncpy.c
index a7987c3161..05a174086d 100644
--- a/tests/unistr/test-u8-stpncpy.c
+++ b/tests/unistr/test-u8-stpncpy.c
@@ -1,5 +1,5 @@
 /* Test of u8_stpncpy() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u8-strcat.c b/tests/unistr/test-u8-strcat.c
index 9dde531dae..e087e4bae4 100644
--- a/tests/unistr/test-u8-strcat.c
+++ b/tests/unistr/test-u8-strcat.c
@@ -1,5 +1,5 @@
 /* Test of u8_strcat() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u8-strchr.c b/tests/unistr/test-u8-strchr.c
index cfd4077998..0f83f63f78 100644
--- a/tests/unistr/test-u8-strchr.c
+++ b/tests/unistr/test-u8-strchr.c
@@ -1,5 +1,5 @@
 /* Test of u8_strchr() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u8-strcmp.c b/tests/unistr/test-u8-strcmp.c
index 447c6162b5..0c8333b840 100644
--- a/tests/unistr/test-u8-strcmp.c
+++ b/tests/unistr/test-u8-strcmp.c
@@ -1,5 +1,5 @@
 /* Test of u8_strcmp() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u8-strcmp.h b/tests/unistr/test-u8-strcmp.h
index 7eaf288761..4af193229f 100644
--- a/tests/unistr/test-u8-strcmp.h
+++ b/tests/unistr/test-u8-strcmp.h
@@ -1,5 +1,5 @@
 /* Test of u8_strcmp() and u8_strcoll() functions.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u8-strcoll.c b/tests/unistr/test-u8-strcoll.c
index 7949e1a609..8a83fb649f 100644
--- a/tests/unistr/test-u8-strcoll.c
+++ b/tests/unistr/test-u8-strcoll.c
@@ -1,5 +1,5 @@
 /* Test of u8_strcoll() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u8-strcpy.c b/tests/unistr/test-u8-strcpy.c
index dd9b40bf0a..275f5f5bc4 100644
--- a/tests/unistr/test-u8-strcpy.c
+++ b/tests/unistr/test-u8-strcpy.c
@@ -1,5 +1,5 @@
 /* Test of u8_strcpy() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u8-strdup.c b/tests/unistr/test-u8-strdup.c
index 84a35053d2..4d8bd51ed9 100644
--- a/tests/unistr/test-u8-strdup.c
+++ b/tests/unistr/test-u8-strdup.c
@@ -1,5 +1,5 @@
 /* Test of u8_strdup() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u8-strlen.c b/tests/unistr/test-u8-strlen.c
index 91a5966383..e0ba446677 100644
--- a/tests/unistr/test-u8-strlen.c
+++ b/tests/unistr/test-u8-strlen.c
@@ -1,5 +1,5 @@
 /* Test of u8_strlen() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u8-strmblen.c b/tests/unistr/test-u8-strmblen.c
index 735dd905e1..d56dbe18fc 100644
--- a/tests/unistr/test-u8-strmblen.c
+++ b/tests/unistr/test-u8-strmblen.c
@@ -1,5 +1,5 @@
 /* Test of u8_strmblen() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u8-strmbtouc.c b/tests/unistr/test-u8-strmbtouc.c
index 74a96c1bf1..6d021ea1ea 100644
--- a/tests/unistr/test-u8-strmbtouc.c
+++ b/tests/unistr/test-u8-strmbtouc.c
@@ -1,5 +1,5 @@
 /* Test of u8_strmbtouc() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u8-strncat.c b/tests/unistr/test-u8-strncat.c
index d0c854c495..2a8387d646 100644
--- a/tests/unistr/test-u8-strncat.c
+++ b/tests/unistr/test-u8-strncat.c
@@ -1,5 +1,5 @@
 /* Test of u8_strncat() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u8-strncmp.c b/tests/unistr/test-u8-strncmp.c
index ada859ef76..7c349c3294 100644
--- a/tests/unistr/test-u8-strncmp.c
+++ b/tests/unistr/test-u8-strncmp.c
@@ -1,5 +1,5 @@
 /* Test of u8_strncmp() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u8-strncpy.c b/tests/unistr/test-u8-strncpy.c
index 824b85df67..c6668fce6f 100644
--- a/tests/unistr/test-u8-strncpy.c
+++ b/tests/unistr/test-u8-strncpy.c
@@ -1,5 +1,5 @@
 /* Test of u8_strncpy() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u8-strnlen.c b/tests/unistr/test-u8-strnlen.c
index 1a740d0d0e..f5e59d4b6e 100644
--- a/tests/unistr/test-u8-strnlen.c
+++ b/tests/unistr/test-u8-strnlen.c
@@ -1,5 +1,5 @@
 /* Test of u8_strnlen() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u8-strstr.c b/tests/unistr/test-u8-strstr.c
index b3610e466d..f11d9408c2 100644
--- a/tests/unistr/test-u8-strstr.c
+++ b/tests/unistr/test-u8-strstr.c
@@ -1,5 +1,5 @@
 /* Test of u8_strstr() function.
-   Copyright (C) 2011-2022 Free Software Foundation, Inc.
+   Copyright (C) 2011-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u8-strtok.c b/tests/unistr/test-u8-strtok.c
index 11c364e82c..fa602108fc 100644
--- a/tests/unistr/test-u8-strtok.c
+++ b/tests/unistr/test-u8-strtok.c
@@ -1,5 +1,5 @@
 /* Test of u8_strtok() function.
-   Copyright (C) 2015-2022 Free Software Foundation, Inc.
+   Copyright (C) 2015-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u8-to-u16.c b/tests/unistr/test-u8-to-u16.c
index 377cf38da2..48836f58a4 100644
--- a/tests/unistr/test-u8-to-u16.c
+++ b/tests/unistr/test-u8-to-u16.c
@@ -1,5 +1,5 @@
 /* Test of u8_to_u16() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u8-to-u32.c b/tests/unistr/test-u8-to-u32.c
index 384c9dc9c3..10eac5dc22 100644
--- a/tests/unistr/test-u8-to-u32.c
+++ b/tests/unistr/test-u8-to-u32.c
@@ -1,5 +1,5 @@
 /* Test of u8_to_u32() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/unistr/test-u8-uctomb.c b/tests/unistr/test-u8-uctomb.c
index cf37cb9b7b..7e8b518890 100644
--- a/tests/unistr/test-u8-uctomb.c
+++ b/tests/unistr/test-u8-uctomb.c
@@ -1,5 +1,5 @@
 /* Test of u8_uctomb() function.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uniwbrk/test-u16-wordbreaks.c 
b/tests/uniwbrk/test-u16-wordbreaks.c
index 8ee67f6d92..7e7aaedde9 100644
--- a/tests/uniwbrk/test-u16-wordbreaks.c
+++ b/tests/uniwbrk/test-u16-wordbreaks.c
@@ -1,5 +1,5 @@
 /* Test of word breaks in UTF-16 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uniwbrk/test-u32-wordbreaks.c 
b/tests/uniwbrk/test-u32-wordbreaks.c
index 57c3763907..e6f80dd419 100644
--- a/tests/uniwbrk/test-u32-wordbreaks.c
+++ b/tests/uniwbrk/test-u32-wordbreaks.c
@@ -1,5 +1,5 @@
 /* Test of word breaks in UTF-32 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uniwbrk/test-u8-wordbreaks.c 
b/tests/uniwbrk/test-u8-wordbreaks.c
index 74c546b022..0b56eaef7d 100644
--- a/tests/uniwbrk/test-u8-wordbreaks.c
+++ b/tests/uniwbrk/test-u8-wordbreaks.c
@@ -1,5 +1,5 @@
 /* Test of word breaks in UTF-8 strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uniwbrk/test-uc-wordbreaks.c 
b/tests/uniwbrk/test-uc-wordbreaks.c
index 3bf1ff5845..19f99ef98e 100644
--- a/tests/uniwbrk/test-uc-wordbreaks.c
+++ b/tests/uniwbrk/test-uc-wordbreaks.c
@@ -1,5 +1,5 @@
 /* Word break function test, using test data from UCD.
-   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+   Copyright (C) 2010-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify it
    under the terms of the GNU Lesser General Public License as published
diff --git a/tests/uniwbrk/test-ulc-wordbreaks.c 
b/tests/uniwbrk/test-ulc-wordbreaks.c
index 6f3203fee2..098444120a 100644
--- a/tests/uniwbrk/test-ulc-wordbreaks.c
+++ b/tests/uniwbrk/test-ulc-wordbreaks.c
@@ -1,5 +1,5 @@
 /* Test of word breaks in strings.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uniwidth/test-u16-strwidth.c 
b/tests/uniwidth/test-u16-strwidth.c
index a41d47c053..928532c115 100644
--- a/tests/uniwidth/test-u16-strwidth.c
+++ b/tests/uniwidth/test-u16-strwidth.c
@@ -1,5 +1,5 @@
 /* Test of u16_strwidth() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uniwidth/test-u16-width.c b/tests/uniwidth/test-u16-width.c
index c8dc1ad991..f98fdea27d 100644
--- a/tests/uniwidth/test-u16-width.c
+++ b/tests/uniwidth/test-u16-width.c
@@ -1,5 +1,5 @@
 /* Test of u16_width() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uniwidth/test-u32-strwidth.c 
b/tests/uniwidth/test-u32-strwidth.c
index 6e627a4bde..b3477960eb 100644
--- a/tests/uniwidth/test-u32-strwidth.c
+++ b/tests/uniwidth/test-u32-strwidth.c
@@ -1,5 +1,5 @@
 /* Test of u32_strwidth() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uniwidth/test-u32-width.c b/tests/uniwidth/test-u32-width.c
index 4c92c852e1..0268fa333c 100644
--- a/tests/uniwidth/test-u32-width.c
+++ b/tests/uniwidth/test-u32-width.c
@@ -1,5 +1,5 @@
 /* Test of u32_width() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uniwidth/test-u8-strwidth.c 
b/tests/uniwidth/test-u8-strwidth.c
index 90fa4369d4..b897ea7ac3 100644
--- a/tests/uniwidth/test-u8-strwidth.c
+++ b/tests/uniwidth/test-u8-strwidth.c
@@ -1,5 +1,5 @@
 /* Test of u8_strwidth() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uniwidth/test-u8-width.c b/tests/uniwidth/test-u8-width.c
index eb56bc00bf..e243cf601f 100644
--- a/tests/uniwidth/test-u8-width.c
+++ b/tests/uniwidth/test-u8-width.c
@@ -1,5 +1,5 @@
 /* Test of u8_width() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uniwidth/test-uc_width.c b/tests/uniwidth/test-uc_width.c
index 86389b26bb..a8bfdc99bb 100644
--- a/tests/uniwidth/test-uc_width.c
+++ b/tests/uniwidth/test-uc_width.c
@@ -1,5 +1,5 @@
 /* Test of uc_width() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/uniwidth/test-uc_width2.c b/tests/uniwidth/test-uc_width2.c
index d088cf39c0..69395a348f 100644
--- a/tests/uniwidth/test-uc_width2.c
+++ b/tests/uniwidth/test-uc_width2.c
@@ -1,5 +1,5 @@
 /* Test of uc_width() function.
-   Copyright (C) 2007-2022 Free Software Foundation, Inc.
+   Copyright (C) 2007-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/tests/zerosize-ptr.h b/tests/zerosize-ptr.h
index 990b51cf64..f2b0903dee 100644
--- a/tests/zerosize-ptr.h
+++ b/tests/zerosize-ptr.h
@@ -1,5 +1,5 @@
 /* Return a pointer to a zero-size object in memory.
-   Copyright (C) 2009-2022 Free Software Foundation, Inc.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/top/GNUmakefile b/top/GNUmakefile
index a778610d28..07b331fe53 100644
--- a/top/GNUmakefile
+++ b/top/GNUmakefile
@@ -5,7 +5,7 @@
 # It is necessary if you want to build targets usually of interest
 # only to the maintainer.
 
-# Copyright (C) 2001, 2003, 2006-2022 Free Software Foundation, Inc.
+# Copyright (C) 2001, 2003, 2006-2023 Free Software Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/top/autogen.sh b/top/autogen.sh
index 1cb918640d..356238585d 100755
--- a/top/autogen.sh
+++ b/top/autogen.sh
@@ -4,7 +4,7 @@
 # also regenerates all aclocal.m4, config.h.in, Makefile.in, configure files
 # with new versions of autoconf or automake.
 
-# Copyright (C) 2003-2022 Free Software Foundation, Inc.
+# Copyright (C) 2003-2023 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/top/autopull.sh b/top/autopull.sh
index 6fb3c9d9d5..0135a2755c 100755
--- a/top/autopull.sh
+++ b/top/autopull.sh
@@ -2,7 +2,7 @@
 # Convenience script for fetching auxiliary files that are omitted from
 # the version control repository of this package.
 
-# Copyright (C) 2003-2022 Free Software Foundation, Inc.
+# Copyright (C) 2003-2023 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/top/bootstrap b/top/bootstrap
index f6ec8fecee..74af1b7e59 100755
--- a/top/bootstrap
+++ b/top/bootstrap
@@ -3,7 +3,7 @@
 
 scriptversion=2022-12-27.07; # UTC
 
-# Copyright (C) 2003-2022 Free Software Foundation, Inc.
+# Copyright (C) 2003-2023 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/top/bootstrap-funclib.sh b/top/bootstrap-funclib.sh
index 76e5f30b19..9e47e0d861 100644
--- a/top/bootstrap-funclib.sh
+++ b/top/bootstrap-funclib.sh
@@ -2,7 +2,7 @@
 
 scriptlibversion=2022-12-27.16; # UTC
 
-# Copyright (C) 2003-2022 Free Software Foundation, Inc.
+# Copyright (C) 2003-2023 Free Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/top/gitsub.sh b/top/gitsub.sh
index 54c52a874f..3373c0c8b4 100755
--- a/top/gitsub.sh
+++ b/top/gitsub.sh
@@ -1,6 +1,6 @@
 #! /bin/sh
 #
-# Copyright (C) 2019-2022 Free Software Foundation, Inc.
+# Copyright (C) 2019-2023 Free Software Foundation, Inc.
 # Written by Bruno Haible <bruno@clisp.org>, 2019.
 #
 # This program is free software: you can redistribute it and/or modify
diff --git a/top/maint.mk b/top/maint.mk
index 0b42438b2c..034e25be3d 100644
--- a/top/maint.mk
+++ b/top/maint.mk
@@ -2,7 +2,7 @@
 # This Makefile fragment tries to be general-purpose enough to be
 # used by many projects via the gnulib maintainer-makefile module.
 
-## Copyright (C) 2001-2022 Free Software Foundation, Inc.
+## Copyright (C) 2001-2023 Free Software Foundation, Inc.
 ##
 ## This program is free software: you can redistribute it and/or modify
 ## it under the terms of the GNU General Public License as published by
diff --git a/users.txt b/users.txt
index d50dac7376..63e191ad01 100644
--- a/users.txt
+++ b/users.txt
@@ -136,7 +136,7 @@ Articles:
 
 -----
 
-Copyright (C) 2006-2022 Free Software Foundation, Inc.
+Copyright (C) 2006-2023 Free Software Foundation, Inc.
 
 This file is free documentation; the Free Software Foundation
 gives unlimited permission to copy and/or distribute it,
-- 
2.38.1

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