X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/983da87847289c7f5373e4d5933d379f211b7613..d89f32c2711de4e1272b8132a13bf98b9a17580d:/src/src/exigrep.src

diff --git a/src/src/exigrep.src b/src/src/exigrep.src
index 118cd91b9..835766fb4 100644
--- a/src/src/exigrep.src
+++ b/src/src/exigrep.src
@@ -5,7 +5,7 @@ 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) 2007-2017 University of Cambridge.
@@ -159,7 +159,8 @@ 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;
 
@@ -233,7 +234,7 @@ GetOptions(
       'version'        => sub {
             print basename($0) . ": $0\n",
                 "build: EXIM_RELEASE_VERSIONEXIM_VARIANT_VERSION\n",
-                "perl(runtime): $^V\n";
+                "perl(runtime): $]\n";
             exit 0;
       },
 ) and @ARGV or pod2usage;
@@ -244,7 +245,8 @@ $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;
@@ -312,8 +314,8 @@ 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>.
@@ -353,7 +355,7 @@ 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>