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difftool: fix dir-diff when file does not exist in working tree

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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>
This commit is contained in:
John Keeping
2013-05-17 19:26:08 +01:00
committed by Junio C Hamano
parent 31eb360b43
commit 1f197a1de4
2 changed files with 13 additions and 0 deletions
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6
git-difftool.perl
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@ -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);