maint: Update doc/help2man.

* doc/help2man: update to 1.48.2.

diff --git a/doc/help2man b/doc/help2man
index db8bedf3f950f3b142eef04c97c8870dd4e6e08b..c795357e04d701dbbfd4a8ab2a2713e7bc70722d 100755 (executable)
--- a/doc/help2man
+++ b/doc/help2man
@@ -1,7 +1,9 @@
 #!/usr/bin/perl -w
 
 # Generate a short man page from --help and --version output.
-# Copyright (C) 1997-2021 Free Software Foundation, Inc.
+# Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2009,
+# 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2020, 2021 Free Software
+# Foundation, Inc.
 
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -14,10 +16,10 @@
 # GNU General Public License for more details.
 
 # You should have received a copy of the GNU General Public License
-# along with this program; if not, see <https://www.gnu.org/licenses/>.
+# along with this program; if not, see <http://www.gnu.org/licenses/>.
 
 # Written by Brendan O'Dea <bod@debian.org>
-# Available from https://ftp.gnu.org/gnu/help2man/
+# Available from ftp://ftp.gnu.org/gnu/help2man/
 
 use 5.008;
 use strict;
@@ -27,7 +29,7 @@ use Text::Tabs qw(expand);
 use POSIX qw(strftime setlocale LC_ALL);
 
 my $this_program = 'help2man';
-my $this_version = '1.47.4';
+my $this_version = '1.48.2';
 
 sub _ { $_[0] }
 sub configure_locale
@@ -51,8 +53,9 @@ sub fix_italic_spacing;
 my $version_info = enc_user sprintf _(<<'EOT'), $this_program, $this_version;
 GNU %s %s
 
-Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2009, 2010,
-2011, 2012, 2013, 2014, 2015 Free Software Foundation, Inc.
+Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2009,
+2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2020, 2021 Free Software
+Foundation, Inc.
 This is free software; see the source for copying conditions.  There is NO
 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 
@@ -247,15 +250,15 @@ my $help_text   = get_option_value $ARGV[0], $help_option;
 $version_text ||= get_option_value $ARGV[0], $version_option;
 
 # By default the generated manual pages will include the current date.  This may
-# however be overriden by setting the environment variable $SOURCE_DATE_EPOCH
-# to an integer value of the seconds since the UNIX epoch.  This is primarily
+# however be overriden by setting the environment variable $SOURCE_DATE_EPOCH to
+# an integer value of the seconds since the UNIX epoch.  This is primarily
 # intended to support reproducible builds (wiki.debian.org/ReproducibleBuilds)
 # and will additionally ensure that the output date string is UTC.
 my $epoch_secs = time;
 if (exists $ENV{SOURCE_DATE_EPOCH} and $ENV{SOURCE_DATE_EPOCH} =~ /^(\d+)$/)
 {
     $epoch_secs = $1;
-    $ENV{TZ} = 'UTC';
+    $ENV{TZ} = 'UTC0';
 }
 
 # Translators: the following message is a strftime(3) format string, which in
@@ -282,21 +285,23 @@ if ($opt_output)
 #   <version>
 #   <program> <version>
 #   {GNU,Free} <program> <version>
-#   <program> ({GNU,Free} <package>) <version>
-#   <program> - {GNU,Free} <package> <version>
+#   <program> ({GNU,Free,} <package>) <version>
+#   <program> - {GNU,Free,} <package> <version>
+#   <program> - {GNU,Free,} <package> - <version>
 #
 # and separated from any copyright/author details by a blank line.
 
 ($_, $version_text) = ((split /\n+/, $version_text, 2), '');
 
-if (/^(\S+) +\(((?:GNU|Free) +[^)]+)\) +(.*)/ or
-    /^(\S+) +- *((?:GNU|Free) +\S+) +(.*)/)
+if (/^(\S+) +\(((?:(?:GNU|Free) +)?[^)]+)\) +(\S.*)$/ or
+    /^(\S+) +- +((?:(?:GNU|Free) +)?\S.*) +- +(\S.*)$/ or
+    /^(\S+) +- +((?:(?:GNU|Free) +)?\S+) +(\S.*)$/)
 {
     $program = program_basename $1;
     $package = $2;
     $version = $3;
 }
-elsif (/^((?:GNU|Free) +)?(\S+) +(.*)/)
+elsif (/^((?:GNU|Free) +)?(\S+) +(\S.*)$/)
 {
     $program = program_basename $2;
     $package = $1 ? "$1$program" : $program;
@@ -336,7 +341,7 @@ for ($replace{_('NAME')} || ($include{_('NAME')} ||= ''))
 my $PROGRAM = uc $program;
 
 # Set default page head/footers
-$source ||= "$program $version";
+$source ||= "$package $version";
 unless ($manual)
 {
     for ($section)
@@ -758,7 +763,7 @@ sub convert_option
 }
 
 # Insert spacing escape characters \, and \/ before and after italic text.  See
-# https://www.gnu.org/software/groff/manual/html_node/Ligatures-and-Kerning.html
+# http://www.gnu.org/software/groff/manual/html_node/Ligatures-and-Kerning.html
 sub fix_italic_spacing
 {
     local $_ = shift;