difftool: Add '-x' and as an alias for '--extcmd'

[git.git] / git-difftool.perl

diff --git a/git-difftool.perl b/git-difftool.perl
index f8ff245756c237894523c01068170955f988df75..d975d072dbf0fab36266c3f3a71a69875206e4d8 100755 (executable)
--- a/git-difftool.perl
+++ b/git-difftool.perl
@@ -1,5 +1,5 @@
 #!/usr/bin/env perl
-# Copyright (c) 2009 David Aguilar
+# Copyright (c) 2009, 2010 David Aguilar
 #
 # This is a wrapper around the GIT_EXTERNAL_DIFF-compatible
 # git-difftool--helper script.
@@ -23,8 +23,9 @@ my $DIR = abs_path(dirname($0));
 sub usage
 {
        print << 'USAGE';
-usage: git difftool [-g|--gui] [-t|--tool=<tool>] [-y|--no-prompt]
-                    ["git diff" options]
+usage: git difftool [-t|--tool=<tool>] [-x|--extcmd=<cmd>]
+                    [-y|--no-prompt]   [-g|--gui]
+                    ['git diff' options]
 USAGE
        exit 1;
 }
@@ -62,14 +63,20 @@ sub generate_command
                        $skip_next = 1;
                        next;
                }
-               if ($arg =~ /^--extcmd=/) {
-                       $ENV{GIT_DIFFTOOL_EXTCMD} = substr($arg, 9);
-                       next;
-               }
                if ($arg =~ /^--tool=/) {
                        $ENV{GIT_DIFF_TOOL} = substr($arg, 7);
                        next;
                }
+               if ($arg eq '-x' || $arg eq '--extcmd') {
+                       usage() if $#ARGV <= $idx;
+                       $ENV{GIT_DIFFTOOL_EXTCMD} = $ARGV[$idx + 1];
+                       $skip_next = 1;
+                       next;
+               }
+               if ($arg =~ /^--extcmd=/) {
+                       $ENV{GIT_DIFFTOOL_EXTCMD} = substr($arg, 9);
+                       next;
+               }
                if ($arg eq '-g' || $arg eq '--gui') {
                        my $tool = Git::command_oneline('config',
                                                        'diff.guitool');