- $parent =~ s#.*/##;
- open(PIPE, '-|', 'diff', '-up', "$tmp_dir/$parent", "$tmp_dir/$patch") or die $!;
+ my $parent_dir;
+ if ($parent eq $master_branch) {
+ $parent_dir = 'master';
+ } else {
+ ($parent_dir) = $parent =~ m{([^/]+)$};
+ }
+ open(PIPE, '-|', 'diff', '-up', "$tmp_dir/$parent_dir", "$tmp_dir/$patch") or die $!;