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authorJohn Keeping <john@keeping.me.uk>2013-05-17 19:26:08 +0100
committerJunio C Hamano <gitster@pobox.com>2013-05-17 11:46:53 -0700
commit1f197a1de497db8898c9920fab77533dab34a03c (patch)
tree84de54dd5e8c42b3351e515ad6ec2b1702e2557d
parent31eb360b43ec351b97adcf67e07fb748da574aaa (diff)
downloadgit-1f197a1de497db8898c9920fab77533dab34a03c.tar.gz
difftool: fix dir-diff when file does not exist in working tree
Commit 02c5631 (difftool --dir-diff: symlink all files matching the working tree, 2013-03-14) does not handle the case where a file that is being compared does not exist in the working tree. Fix this by checking for existence explicitly before running git-hash-object. Reported-by: Kevin Bracey <kevin@bracey.fi> Signed-off-by: John Keeping <john@keeping.me.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>
-rwxr-xr-xgit-difftool.perl6
-rwxr-xr-xt/t7800-difftool.sh7
2 files changed, 13 insertions, 0 deletions
diff --git a/git-difftool.perl b/git-difftool.perl
index 67802922cc..8a75205537 100755
--- a/git-difftool.perl
+++ b/git-difftool.perl
@@ -92,6 +92,12 @@ sub use_wt_file
return 0;
}
+ if (! -e "$workdir/$file") {
+ # If the file doesn't exist in the working tree, we cannot
+ # use it.
+ return (0, $null_sha1);
+ }
+
my $wt_sha1 = $repo->command_oneline('hash-object', "$workdir/$file");
my $use = ($sha1 eq $null_sha1) || ($sha1 eq $wt_sha1);
return ($use, $wt_sha1);
diff --git a/t/t7800-difftool.sh b/t/t7800-difftool.sh
index a6bd99eaf5..d46f0411bd 100755
--- a/t/t7800-difftool.sh
+++ b/t/t7800-difftool.sh
@@ -356,6 +356,13 @@ run_dir_diff_test 'difftool --dir-diff from subdirectory' '
)
'
+run_dir_diff_test 'difftool --dir-diff when worktree file is missing' '
+ test_when_finished git reset --hard &&
+ rm file2 &&
+ git difftool --dir-diff $symlinks --extcmd ls branch master >output &&
+ grep file2 output
+'
+
write_script .git/CHECK_SYMLINKS <<\EOF
for f in file file2 sub/sub
do