difftool: Fix '--gui' when diff.guitool is unconfigured
When diff.guitool is unconfigured and "--gui" is specified
git-difftool dies with the following error message:
config diff.guitool: command returned error: 1
Catch the error so that the "--gui" flag is a no-op when
diff.guitool is unconfigured.
Signed-off-by: David Aguilar <davvid@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/git-difftool.perl b/git-difftool.perl
index d975d07..adc42de 100755
--- a/git-difftool.perl
+++ b/git-difftool.perl
@@ -78,11 +78,13 @@
next;
}
if ($arg eq '-g' || $arg eq '--gui') {
- my $tool = Git::command_oneline('config',
- 'diff.guitool');
- if (length($tool)) {
- $ENV{GIT_DIFF_TOOL} = $tool;
- }
+ eval {
+ my $tool = Git::command_oneline('config',
+ 'diff.guitool');
+ if (length($tool)) {
+ $ENV{GIT_DIFF_TOOL} = $tool;
+ }
+ };
next;
}
if ($arg eq '-y' || $arg eq '--no-prompt') {
