bug#58464: 28.1; browse-url-emacs doesn't work for local files on Windows

[Pascal Quesseveur]

emacs -Q
(browse-url-emacs "file://C:/Windows/win.ini") -> Emacs hangs, nothing
is displayed, C-g
(browse-url-emacs "file:///C:/Windows/win.ini") -> file content is
displayed, Message buffer contains:

File exists, but cannot be read
#<buffer win.ini</Windows>>



In GNU Emacs 28.1 (build 2, x86_64-w64-mingw32)
 of 2022-04-21 built on AVALON
Windowing system distributor 'Microsoft Corp.', version 10.0.19044
System Description: Microsoft Windows 10 Pro (v10.0.2009.19044.2006)

Configured using:
 'configure --with-modules --without-dbus --with-native-compilation
 --without-compress-install CFLAGS=-O2'

Configured features:
ACL GIF GMP GNUTLS HARFBUZZ JPEG JSON LCMS2 LIBXML2 MODULES
NATIVE_COMP NOTIFY W32NOTIFY PDUMPER PNG RSVG SOUND THREADS TIFF
TOOLKIT_SCROLL_BARS XPM ZLIB

(NATIVE_COMP present but libgccjit not available)

Important settings:
  value of $LANG: FRA
  locale-coding-system: cp1252

Major mode: Summary

Minor modes in effect:
  display-time-mode: t
  shell-dirtrack-mode: t
  icomplete-mode: t
  windmove-mode: t
  auto-image-file-mode: t
  tooltip-mode: t
  global-eldoc-mode: t
  show-paren-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  buffer-read-only: t
  column-number-mode: t
  line-number-mode: t
  indent-tabs-mode: t
  transient-mark-mode: t

Load-path shadows:
c:/Users/Public/emacs-site/lisp/bbdb-3.2.2.2/bbdb hides 
c:/Users/quessev/.emacs.d/elpa/bbdb-3.2.2.2/bbdb
c:/Users/Public/emacs-site/lisp/bbdb-3.2.2.2/bbdb-wl hides 
c:/Users/quessev/.emacs.d/elpa/bbdb-3.2.2.2/bbdb-wl
c:/Users/Public/emacs-site/lisp/bbdb-3.2.2.2/bbdb-vm hides 
c:/Users/quessev/.emacs.d/elpa/bbdb-3.2.2.2/bbdb-vm
c:/Users/Public/emacs-site/lisp/bbdb-3.2.2.2/bbdb-tex hides 
c:/Users/quessev/.emacs.d/elpa/bbdb-3.2.2.2/bbdb-tex
c:/Users/Public/emacs-site/lisp/bbdb-3.2.2.2/bbdb-snarf hides 
c:/Users/quessev/.emacs.d/elpa/bbdb-3.2.2.2/bbdb-snarf
c:/Users/Public/emacs-site/lisp/bbdb-3.2.2.2/bbdb-site hides 
c:/Users/quessev/.emacs.d/elpa/bbdb-3.2.2.2/bbdb-site
c:/Users/Public/emacs-site/lisp/bbdb-3.2.2.2/bbdb-rmail hides 
c:/Users/quessev/.emacs.d/elpa/bbdb-3.2.2.2/bbdb-rmail
c:/Users/Public/emacs-site/lisp/bbdb-3.2.2.2/bbdb-pkg hides 
c:/Users/quessev/.emacs.d/elpa/bbdb-3.2.2.2/bbdb-pkg
c:/Users/Public/emacs-site/lisp/bbdb-3.2.2.2/bbdb-pgp hides 
c:/Users/quessev/.emacs.d/elpa/bbdb-3.2.2.2/bbdb-pgp
c:/Users/Public/emacs-site/lisp/bbdb-3.2.2.2/bbdb-mua hides 
c:/Users/quessev/.emacs.d/elpa/bbdb-3.2.2.2/bbdb-mua
c:/Users/Public/emacs-site/lisp/bbdb-3.2.2.2/bbdb-mu4e hides 
c:/Users/quessev/.emacs.d/elpa/bbdb-3.2.2.2/bbdb-mu4e
c:/Users/Public/emacs-site/lisp/bbdb-3.2.2.2/bbdb-migrate hides 
c:/Users/quessev/.emacs.d/elpa/bbdb-3.2.2.2/bbdb-migrate
c:/Users/Public/emacs-site/lisp/bbdb-3.2.2.2/bbdb-mhe hides 
c:/Users/quessev/.emacs.d/elpa/bbdb-3.2.2.2/bbdb-mhe
c:/Users/Public/emacs-site/lisp/bbdb-3.2.2.2/bbdb-message hides 
c:/Users/quessev/.emacs.d/elpa/bbdb-3.2.2.2/bbdb-message
c:/Users/Public/emacs-site/lisp/bbdb-3.2.2.2/bbdb-ispell hides 
c:/Users/quessev/.emacs.d/elpa/bbdb-3.2.2.2/bbdb-ispell
c:/Users/Public/emacs-site/lisp/bbdb-3.2.2.2/bbdb-gnus hides 
c:/Users/quessev/.emacs.d/elpa/bbdb-3.2.2.2/bbdb-gnus
c:/Users/Public/emacs-site/lisp/bbdb-3.2.2.2/bbdb-com hides 
c:/Users/quessev/.emacs.d/elpa/bbdb-3.2.2.2/bbdb-com
c:/Users/Public/emacs-site/lisp/bbdb-3.2.2.2/bbdb-anniv hides 
c:/Users/quessev/.emacs.d/elpa/bbdb-3.2.2.2/bbdb-anniv
c:/Users/quessev/.emacs.d/lisp/vcard-qsr/vcard hides 
c:/Users/quessev/.emacs.d/elpa/vcard-0.2.2/vcard
c:/Users/quessev/.emacs.d/lisp/vcard-qsr/vcard-parse hides 
c:/Users/quessev/.emacs.d/elpa/vcard-0.2.2/vcard-parse
c:/Users/quessev/.emacs.d/lisp/vcard-qsr/vcard-mode hides 
c:/Users/quessev/.emacs.d/elpa/vcard-0.2.2/vcard-mode
c:/Users/Public/emacs-site/lisp/utils/wdired hides c:/Program 
Files/Emacs/emacs-28.1/share/emacs/28.1/lisp/wdired
c:/Users/Public/emacs-site/lisp/utils/ls-lisp hides c:/Program 
Files/Emacs/emacs-28.1/share/emacs/28.1/lisp/ls-lisp
c:/Users/Public/emacs-site/lisp/utils/iimage hides c:/Program 
Files/Emacs/emacs-28.1/share/emacs/28.1/lisp/iimage
c:/Users/Public/emacs-site/lisp/utils/calculator hides c:/Program 
Files/Emacs/emacs-28.1/share/emacs/28.1/lisp/calculator
c:/Users/Public/emacs-site/lisp/utils/table hides c:/Program 
Files/Emacs/emacs-28.1/share/emacs/28.1/lisp/textmodes/table
c:/Users/Public/emacs-site/lisp/remember/remember hides c:/Program 
Files/Emacs/emacs-28.1/share/emacs/28.1/lisp/textmodes/remember
c:/Users/Public/emacs-site/lisp/utils/rlogin hides c:/Program 
Files/Emacs/emacs-28.1/share/emacs/28.1/lisp/net/rlogin
c:/Users/Public/emacs-site/lisp/dictionary-1.8.7/dictionary hides c:/Program 
Files/Emacs/emacs-28.1/share/emacs/28.1/lisp/net/dictionary

Features:
(tabify time-stamp shadow warnings emacsbug mm-archive gnus-fun
mailalias mule-util sort smiley gnus-cite mail-extr gnus-async
gnus-bcklg qp gnus-ml emms-info-libtag emms-player-vlc emms-player-mpv
emms-player-mplayer emms-playlist-limit emms-volume
emms-volume-mixerctl emms-volume-pulse emms-volume-amixer emms-i18n
emms-stream-info emms-mode-line-icon emms-playlist-sort
emms-last-played emms-playing-time emms-player-simple emms-streams
emms-show-all emms-tag-editor emms-mark emms-mode-line
emms-info-ogginfo emms-info-mp3info emms-info later-do
emms-playlist-mode emms-source-playlist emms-source-file locate
music-list music-album emms-setup emms emms-compat gnus-topic nndraft
nnmh gnus-agent gnus-srvr gnus-score score-mode nnvirtual gnus-msg
gnus-art mm-uu mml2015 mm-view mml-smime smime dig nnml utf-7 gnutls
nnfolder cl-extra help-mode gnus-cache gnus-sum network-stream nsm
nntp gnus-group gnus-undo gnus-start gnus-dbus dbus gnus-cloud nnimap
nnmail mail-source utf7 netrc nnoo gnus-spec gnus-int gnus-range
gnus-win time highlight-current-line color-theme smtpmail tumblesocks
tumblesocks-view tumblesocks-compose markdown-mode noutline outline
htmlize tumblesocks-user tumblesocks-api oauth sasl sasl-anonymous
sasl-login sasl-plain hex-util hmac-sha1 shr kinsoku svg dom
plantuml-mode xml dash thingatpt html2help footnote rx muse-odf
muse-xml muse-help muse-bbcode muse-blosxom muse-wiki muse-texinfo
texnfo-upd texinfo texinfo-loaddefs muse-latex muse-html muse-docbook
muse-xml-common cus-edit pp cus-load muse-publish muse-project
muse-protocols muse-regexps muse muse-nested-tags muse-mode u-vm-color
org-import-icalendar icalendar diary-lib diary-loaddefs bbdb-sc
supercite regi bbdb-migrate bbdb-snarf bbdb-message sendmail message
rmc puny dired-explore dired-sort-menu acid dired-arc file-op dired-x
dired dired-loaddefs rfc822 mml mml-sec mm-decode mm-bodies mm-encode
mail-parse rfc2231 gmm-utils mailheader bbdb-rmail rmailsum bbdb-gnus
bbdb-mua gnus nnheader gnus-util rmail rmail-loaddefs rfc2047 rfc2045
ietf-drums mail-utils mm-util mail-prsvr wid-edit bbdb-com pcase crm
mailabbrev find-func bbdb bbdb-site timezone tramp tramp-loaddefs
trampver tramp-integration files-x tramp-compat shell pcomplete
parse-time iso8601 time-date format-spec which idb gud easy-mmode
compile text-property-search comint ansi-color ring qproj-opascal jsee
javadoc-lookup ido jserial jswat qproj-java jdok tempo xml-parse
doxymacs qproj-cpp qproj server dos-indent generic generic-x cc-mode
cc-fonts cc-guess cc-menus cc-cmds cc-styles cc-align cc-engine
cc-vars cc-defs lunar solar cal-dst cal-tex cal-iso cal-menu calendar
cal-loaddefs epa-file epa derived epg rfc6068 epg-config ps-mule ipp
cl printing ps-print ps-print-loaddefs ps-def lpr icomplete windmove
advice image-file image-converter edmacro kmacro info package
browse-url url url-proxy url-privacy url-expand url-methods
url-history url-cookie url-domsuf url-util mailcap url-handlers
url-parse auth-source cl-seq eieio eieio-core cl-macs eieio-loaddefs
password-cache json subr-x map url-vars seq byte-opt gv bytecomp
byte-compile cconv cl-loaddefs cl-lib iso-transl tooltip eldoc paren
electric uniquify ediff-hook vc-hooks lisp-float-type elisp-mode
mwheel dos-w32 ls-lisp disp-table term/w32-win w32-win w32-vars
term/common-win tool-bar dnd fontset image regexp-opt fringe
tabulated-list replace newcomment text-mode lisp-mode prog-mode
register page tab-bar menu-bar rfn-eshadow isearch easymenu timer
select scroll-bar mouse jit-lock font-lock syntax font-core
term/tty-colors frame minibuffer cl-generic cham georgian utf-8-lang
misc-lang vietnamese tibetan thai tai-viet lao korean japanese
eucjp-ms cp51932 hebrew greek romanian slovak czech european ethiopic
indian cyrillic chinese composite emoji-zwj charscript charprop
case-table epa-hook jka-cmpr-hook help simple abbrev obarray
cl-preloaded nadvice button loaddefs faces cus-face macroexp files
window text-properties overlay sha1 md5 base64 format env code-pages
mule custom widget hashtable-print-readable backquote threads
w32notify w32 lcms2 multi-tty make-network-process native-compile
emacs)

Memory information:
((conses 16 654839 79861)
 (symbols 48 33806 10)
 (strings 32 171534 8080)
 (string-bytes 1 5621311)
 (vectors 16 50230)
 (vector-slots 8 875194 57078)
 (floats 8 1118 352)
 (intervals 56 2638 204)
 (buffers 992 34))

-- 
Pascal Quesseveur