FYI: announce-gen: use time-stamp in place of $Revision:...$

[Jim Meyering]

FYI, I've just done this:

        * build-aux/announce-gen ($VERSION): Don't use of $Revision...$.
        Instead, use Emacs' time-stamp write hook.  Note that the time is UTC.

Index: build-aux/announce-gen
===================================================================
RCS file: /sources/gnulib/gnulib/build-aux/announce-gen,v
retrieving revision 1.2
diff -u -p -r1.2 announce-gen
--- build-aux/announce-gen      8 Dec 2006 09:28:23 -0000       1.2
+++ build-aux/announce-gen      8 Dec 2006 17:37:17 -0000
@@ -1,6 +1,12 @@
 #!/usr/bin/perl -w
 # Generate a release announcement message.

+my $VERSION = '2006-12-08 17:35'; # UTC
+# The definition above must lie within the first 8 lines in order
+# for the Emacs time-stamp write hook (at end) to update it.
+# If you change this file with Emacs, please let the write hook
+# do its job.  Otherwise, update this string manually.
+
 # Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.

 # This program is free software; you can redistribute it and/or modify
@@ -26,7 +32,6 @@ use Digest::MD5;
 use Digest::SHA1;
 use POSIX qw(strftime);

-(my $VERSION = '$Revision: 1.2 $ ') =~ tr/[0-9].//cd;
 (my $ME = $0) =~ s|.*/||;

 my %valid_release_types = map {$_ => 1} qw (alpha beta major);
@@ -480,8 +485,6 @@ EOF
   exit 0;
 }

-
-
 ### Setup "GNU" style for perl-mode and cperl-mode.
 ## Local Variables:
 ## perl-indent-level: 2
@@ -497,4 +500,9 @@ EOF
 ## cperl-extra-newline-before-brace: t
 ## cperl-merge-trailing-else: nil
 ## cperl-continued-statement-offset: 2
+## eval: (add-hook 'write-file-hooks 'time-stamp)
+## time-stamp-start: "my $VERSION = '"
+## time-stamp-format: "%:y-%02m-%02d %02H:%02M"
+## time-stamp-time-zone: "UTC"
+## time-stamp-end: "'; # UTC"
 ## End: