maint: use help2man configured with --disable-nls

Prompted by the continuous integration build failure at:
http://hydra.nixos.org/build/6038769

The previously committed 'help2man' requires a Perl module
which does not seem to be installed everywhere - and which
is not needed for our purposes:

  Can't locate Locale/gettext.pm in @INC
  BEGIN failed--compilation aborted at ./man/help2man line 28.

This module was pulled in automatically by the default configure call.
Use the NLS-disabled version instead.

* man/help2man.in: Use help2man configured with the --disable-nls
option to avoid the dependency to the above Perl module.
* man/help2man.diff: Adapt the line numbers of the hunks in the
coreutils-specific patch for help2man to apply without fuzz.

Reported by Pádraig Brady.

2 files changed, 13 insertions, 36 deletions

diff --git a/man/help2man.diff b/man/help2man.diff
index 017f4dc5b..12fa76f22 100644
--- a/man/help2man.diff
+++ b/man/help2man.diff
@@ -1,6 +1,6 @@
 --- man/help2man-orig
-+++ man/help2man	2013-08-01 02:37:57.771389937 +0200
-@@ -435,6 +435,7 @@
++++ man/help2man	2013-09-10 07:31:28.352365301 +0200
+@@ -412,6 +412,7 @@
  my $PAT_FILES         = _('Files');
  my $PAT_EXAMPLES      = _('Examples');
  my $PAT_FREE_SOFTWARE = _('This +is +free +software');
@@ -8,7 +8,7 @@
  
  # Start a new paragraph (if required) for these.
  s/([^\n])\n($PAT_BUGS|$PAT_AUTHOR) /$1\n\n$2 /og;
-@@ -467,6 +468,12 @@
+@@ -444,6 +445,12 @@
  	next;
      }
  
@@ -21,7 +21,7 @@
      # Copyright section
      if (/^Copyright /)
      {
-@@ -645,7 +652,7 @@
+@@ -622,7 +629,7 @@
  .B %s
  programs are properly installed at your site, the command
  .IP
diff --git a/man/help2man.in b/man/help2man.in
index 79f686cd7..bfeb98972 100755
--- a/man/help2man.in
+++ b/man/help2man.in
@@ -25,43 +25,22 @@ use strict;
 use Getopt::Long;
 use Text::Tabs qw(expand);
 use POSIX qw(strftime setlocale LC_ALL);
-use Locale::gettext;
-use Encode qw(decode encode);
-use I18N::Langinfo qw(langinfo CODESET);
 
 my $this_program = 'help2man';
 my $this_version = '1.43.3';
-my $encoding;
 
+sub _ { $_[0] }
+sub configure_locale
 {
-    my $gettext = Locale::gettext->domain($this_program);
-    sub _ { $gettext->get($_[0]) }
-
-    my ($user_locale) = grep defined && length,
-	(map $ENV{$_}, qw(LANGUAGE LC_ALL LC_MESSAGES LANG)), 'C';
-
-    my $user_encoding = langinfo CODESET;
-
-    # Set localisation of date and executable's output.
-    sub configure_locale
-    {
-	delete @ENV{qw(LANGUAGE LC_MESSAGES LANG)};
-	setlocale LC_ALL, $ENV{LC_ALL} = shift || 'C';
-	$encoding = langinfo CODESET;
-    }
-
-    sub dec { $encoding ? decode $encoding, $_[0] : $_[0] }
-    sub enc { $encoding ? encode $encoding, $_[0] : $_[0] }
-    sub enc_user { encode $user_encoding, $_[0] }
-    sub kark # die with message formatted in the invoking user's locale
-    {
-	setlocale LC_ALL, $user_locale;
-	my $fmt = $gettext->get(shift);
-	my $errmsg = enc_user sprintf $fmt, @_;
-	die $errmsg, "\n";
-    }
+    my $locale = shift;
+    die "$this_program: no locale support (Locale::gettext required)\n"
+	unless $locale eq 'C';
 }
 
+sub dec { $_[0] }
+sub enc { $_[0] }
+sub enc_user { $_[0] }
+sub kark { die +(sprintf shift, @_), "\n" }
 sub N_ { $_[0] }
 
 sub program_basename;
@@ -142,8 +121,6 @@ my %opt_def = (
 Getopt::Long::config('bundling');
 die $help_info unless GetOptions %opt_def and @ARGV == 1;
 
-configure_locale unless $encoding;
-
 my %include = ();
 my %replace = ();
 my %append = ();