difftool: fix argument handling in subdirs

When in a subdirectory of a repository, path arguments should be interpreted relative to the current directory not the root of the working tree. The Git::repository object passed into setup_dir_diff() is configured to handle this correctly but we create a new Git::repository here without setting the WorkingSubdir argument. By simply using the existing repository, path arguments are handled relative to the current directory. Reported-by: Bernhard Kirchen <bernhard.kirchen@rwth-aachen.de> Signed-off-by: John Keeping <john@keeping.me.uk> Acked-by: David Aguilar <davvid@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>

John Keeping committed Jul 18, 2016 at 20:57 UTC 9ec26e797781239b36ebccb87c590e5778358007
1 file changed +3 -10
git-difftool.perl
+3 -10
@@ -115,16 +115,9 @@ sub setup_dir_diff
115 {
116 my ($repo, $workdir, $symlinks) = @_;
117
118 - # Run the diff; exit immediately if no diff found
119 - # 'Repository' and 'WorkingCopy' must be explicitly set to insure that
120 - # if $GIT_DIR and $GIT_WORK_TREE are set in ENV, they are actually used
121 - # by Git->repository->command*.
118 my $repo_path = $repo->repo_path();
123 - my %repo_args = (Repository => $repo_path, WorkingCopy => $workdir);
124 - my $diffrepo = Git->repository(%repo_args);
125 -
119 my @gitargs = ('diff', '--raw', '--no-abbrev', '-z', @ARGV);
127 - my $diffrtn = $diffrepo->command_oneline(@gitargs);
120 + my $diffrtn = $repo->command_oneline(@gitargs);
121 exit(0) unless defined($diffrtn);
122
123 # Build index info for left and right sides of the diff
@@ -176,12 +169,12 @@ EOF
169
170 if ($lmode eq $symlink_mode) {
171 $symlink{$src_path}{left} =
179 - $diffrepo->command_oneline('show', "$lsha1");
172 + $repo->command_oneline('show', "$lsha1");
173 }
174
175 if ($rmode eq $symlink_mode) {
176 $symlink{$dst_path}{right} =
184 - $diffrepo->command_oneline('show', "$rsha1");
177 + $repo->command_oneline('show', "$rsha1");
178 }
179
180 if ($lmode ne $null_mode and $status !~ /^C/) {