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

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This adds '-x' as a shorthand for the '--extcmd' option.
Arguments to '--extcmd' can be specified separately, which
was not originally possible.

This also fixes the brief help text so that it mentions
both '-x' and '--extcmd'.

Signed-off-by: David Aguilar <davvid@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
David Aguilar 2010-01-15 14:03:43 -08:00 committed by Junio C Hamano
parent a9e11220c2
commit f47f1e2ce8
3 changed files with 24 additions and 8 deletions
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3
Documentation/git-difftool.txt
View File

@ -7,7 +7,7 @@ git-difftool - Show changes using common diff tools
SYNOPSIS
--------
'git difftool' [--tool=<tool>] [-y|--no-prompt|--prompt] [<'git diff' options>]
'git difftool' [<options>] <commit>{0,2} [--] [<path>...]
DESCRIPTION
-----------
@ -58,6 +58,7 @@ is set to the name of the temporary file containing the contents
of the diff post-image. `$BASE` is provided for compatibility
with custom merge tool commands and has the same value as `$LOCAL`.
-x <command>::
--extcmd=<command>::
Specify a custom command for viewing diffs.
'git-difftool' ignores the configured defaults and runs

21
git-difftool.perl
View File

@ -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');

8
t/t7800-difftool.sh
View File

@ -225,8 +225,16 @@ test_expect_success 'difftool.<tool>.path' '
test_expect_success 'difftool --extcmd=cat' '
diff=$(git difftool --no-prompt --extcmd=cat branch) &&
test "$diff" = branch"$LF"master
'
test_expect_success 'difftool --extcmd cat' '
diff=$(git difftool --no-prompt --extcmd cat branch) &&
test "$diff" = branch"$LF"master
'
test_expect_success 'difftool -x cat' '
diff=$(git difftool --no-prompt -x cat branch) &&
test "$diff" = branch"$LF"master
'