X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/571b27158aa468eda77b1a20ed80bed1f342e15d..4729b6937b582a029147ba51298f5c300c5b1891:/src/src/exigrep.src

diff --git a/src/src/exigrep.src b/src/src/exigrep.src
index 1899267be..fd07fd8f1 100644
--- a/src/src/exigrep.src
+++ b/src/src/exigrep.src
@@ -5,9 +5,11 @@ use strict;
 BEGIN { pop @INC if $INC[-1] eq '.' };
 
 use Pod::Usage;
-use Getopt::Long;
+use Getopt::Long qw(:config no_ignore_case);
+use File::Basename;
 
-# Copyright (c) 2007-2015 University of Cambridge.
+# Copyright (c) 2007-2017 University of Cambridge.
+# Copyright (c) The Exim Maintainers 2020
 # See the file NOTICE for conditions of use and distribution.
 
 # Except when they appear in comments, the following placeholders in this
@@ -158,7 +160,8 @@ my $compressors = {
   gz   => { cmd => 'zcat',  args => '' },
   bz2  => { cmd => 'bzcat', args => '' },
   xz   => { cmd => 'xzcat', args => '' },
-  lzma => { cmd => 'lzma',  args => '-dc' }
+  lzma => { cmd => 'lzma',  args => '-dc' },
+  zst  => { cmd => 'zstdcat', args => '' },
 };
 my $csearch = 0;
 
@@ -229,6 +232,12 @@ GetOptions(
             -noperldoc => system('perldoc -V 2>/dev/null >&2')
         );
       },
+      'version'        => sub {
+            print basename($0) . ": $0\n",
+                "build: EXIM_RELEASE_VERSIONEXIM_VARIANT_VERSION\n",
+                "perl(runtime): $]\n";
+            exit 0;
+      },
 ) and @ARGV or pod2usage;
 
 $pattern = shift @ARGV;
@@ -237,7 +246,8 @@ $pattern = quotemeta $pattern if $literal;
 # Start a pager if output goes to a terminal
 if (-t 1 and $use_pager)
   {
-  foreach ($ENV{PAGER}//(), 'less', 'more')
+  # for perl >= v5.10.x: foreach ($ENV{PAGER}//(), 'less', 'more')
+  foreach (defined $ENV{PAGER} ? $ENV{PAGER} : (), 'less', 'more')
     {
     local $ENV{LESS} .= ' --no-init --quit-if-one-screen';
     open(my $pager, '|-', $_) or next;
@@ -305,8 +315,8 @@ given host, for example.
 
 If no file names are given on the command line, the standard input is read.
 
-For known file extensions indicating compression (F<.gz>, F<.bz2>, F<.xz>, and F<.lzma>)
-a suitable de-compressor is used, if available.
+For known file extensions indicating compression (F<.gz>, F<.bz2>, F<.xz>,
+F<.lzma>, and F<.zst>) a suitable de-compressor is used, if available.
 
 The output is sent through a pager if a terminal is connected to STDOUT. As
 pager are considered: C<$ENV{PAGER}>, C<less>, C<more>.
@@ -346,7 +356,7 @@ Do not use a pager, even if STDOUT is connected to a terminal.
 =item B<-h>|B<--help>
 
 Print a short reference help. For more detailed help try L<exigrep(8)>,
-or C<exigrep -m>.
+or C<exigrep --man>.
 
 =item B<-m>|B<--man>