config: only read .git/config from configured repos

diff --git a/git-difftool.perl b/git-difftool.perl
index 488d14b153e50f69fcfb0c732cc8c23cf4b643de..ebd13baa6e06cf7007fdd5c48713f06cf511721d 100755 (executable)
--- a/git-difftool.perl
+++ b/git-difftool.perl
@@ -138,6 +138,7 @@ sub setup_dir_diff
        my %submodule;
        my %symlink;
        my @working_tree = ();
+       my %working_tree_dups = ();
        my @rawdiff = split('\0', $diffrtn);
 
        my $i = 0;
@@ -188,6 +189,10 @@ sub setup_dir_diff
                }
 
                if ($rmode ne $null_mode) {
+                       # Avoid duplicate working_tree entries
+                       if ($working_tree_dups{$dst_path}++) {
+                               next;
+                       }
                        my ($use, $wt_sha1) = use_wt_file($repo, $workdir,
                                                          $dst_path, $rsha1);
                        if ($use) {
@@ -273,7 +278,7 @@ sub setup_dir_diff
        # temporary file to both the left and right directories to show the
        # change in the recorded SHA1 for the submodule.
        for my $path (keys %submodule) {
-               my $ok;
+               my $ok = 0;
                if (defined($submodule{$path}{left})) {
                        $ok = write_to_file("$ldir/$path",
                                "Subproject commit $submodule{$path}{left}");
@@ -289,7 +294,7 @@ sub setup_dir_diff
        # shows only the link itself, not the contents of the link target.
        # This loop replicates that behavior.
        for my $path (keys %symlink) {
-               my $ok;
+               my $ok = 0;
                if (defined($symlink{$path}{left})) {
                        $ok = write_to_file("$ldir/$path",
                                        $symlink{$path}{left});