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[PATCH 10/9 v5] difftool: fix regression in '--prompt' options

From
Tim Henigan <tim.henigan@gmail.com>
Date
Mar 22, 2012, 15:02 UTC
Message-ID
<1332428541-24878-1-git-send-email-tim.henigan@gmail.com>

When difftool was changed to use Getopt::Long, it changed the way that the '--prompt' and '--no-prompt' options were handled. The expected behavior is that the two options may be given any number of times. The last option given "wins".

For example, if a user sets "[alias] mdt = difftool --prompt", the following must still run without error:

$ git mdt --no-prompt

The changes made during the switch to Getopt::Long broke this behavior. This commit teaches difftool to handle them properly again.

Signed-off-by: Tim Henigan <tim.henigan@gmail.com>
---
This replaces 10/9 in the previous version of the series.
Changes in v5:
  - Based on an example provided by Thomas Rast on the Git dev list,
    the '--[no-]prompt' options are parsed by Getopt::Long again.
 git-difftool.perl |   21 +++++++++++----------
 1 file changed, 11 insertions(+), 10 deletions(-)
diff --git a/git-difftool.perl b/git-difftool.perl
index 9f0f9a9..9892d1e 100755
--- a/git-difftool.perl
+++ b/git-difftool.perl
@@ -29,8 +29,8 @@ sub usage
 	my $exitcode = shift;
 	print << 'USAGE';
 usage: git difftool [-t|--tool=<tool>] [--tool-help]
-                    [-x|--extcmd=<cmd>]
-                    [-y|--no-prompt]   [-g|--gui]
+                    [-x|--extcmd=<cmd>] [-g|--gui]
+                    [--prompt] [-y|--no-prompt]
                     [-d|--dir-diff]
                     ['git diff' options]
 USAGE
@@ -131,15 +131,15 @@ sub setup_dir_diff
 
 # parse command-line options. all unrecognized options and arguments
 # are passed through to the 'git diff' command.
-my ($difftool_cmd, $dirdiff, $extcmd, $gui, $help, $no_prompt, $prompt, $tool_help);
+my ($difftool_cmd, $dirdiff, $extcmd, $gui, $help, $prompt, $tool_help);
 GetOptions('g|gui' => \$gui,
 	'd|dir-diff' => \$dirdiff,
 	'h' => \$help,
-	'prompt' => \$prompt,
+	'prompt!' => \$prompt,
+	'y' => sub { $prompt = 0; },
 	't|tool:s' => \$difftool_cmd,
 	'tool-help' => \$tool_help,
-	'x|extcmd:s' => \$extcmd,
-	'y|no-prompt' => \$no_prompt);
+	'x|extcmd:s' => \$extcmd);
 
 if (defined($help)) {
 	usage(0);
@@ -203,10 +203,11 @@ if (defined($dirdiff)) {
 	}
 } else {
 	if (defined($prompt)) {
-		$ENV{GIT_DIFFTOOL_PROMPT} = 'true';
-	}
-	elsif (defined($no_prompt)) {
-		$ENV{GIT_DIFFTOOL_NO_PROMPT} = 'true';
+		if ($prompt) {
+			$ENV{GIT_DIFFTOOL_PROMPT} = 'true';
+		} else {
+			$ENV{GIT_DIFFTOOL_NO_PROMPT} = 'true';
+		}
 	}
 
 	$ENV{GIT_PAGER} = '';
-- 
1.7.10.rc1.40.g756bbcd
Next: Tim Henigan
Message 1 of 3 in “difftool: fix regression in '--prompt' options”
  1. 10/9 difftool: fix regression in '--prompt' optionsTim Henigan, Mar 22, 2012
  2. 12/9 t7800: add tests for difftool --dir-diffTim Henigan, Mar 22, 2012
  3. 13/9 difftool: add '--no-gui' as an optionTim Henigan, Mar 22, 2012

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