Dgit.pm: git_for_each_ref: Provide optional $git_dir argument

diff --git a/Debian/Dgit.pm b/Debian/Dgit.pm
index 32c2bc5673cad88ac87f1e569fa2a0518a5cf443..48aae188560ddc825351b2cd09d0d8cebc0e475d 100644 (file)
--- a/Debian/Dgit.pm
+++ b/Debian/Dgit.pm
@@ -188,12 +188,15 @@ sub git_rev_parse ($) {
     return cmdoutput qw(git rev-parse), "$_[0]~0";
 }
 
-sub git_for_each_ref ($$) {
-    my ($pattern,$func) = @_;
+sub git_for_each_ref ($$;$) {
+    my ($pattern,$func,$gitdir) = @_;
     # calls $func->($objid,$objtype,$fullrefname,$reftail);
     # $reftail is RHS of ref after refs/[^/]+/
     # breaks if $pattern matches any ref `refs/blah' where blah has no `/'
     my @cmd = (qw(git for-each-ref), $pattern);
+    if (defined $gitdir) {
+       @cmd = ('sh','-ec','cd "$1"; shift; exec "$@"','x', $gitdir, @cmd);
+    }
     open GFER, "-|", @cmd or die $!;
     debugcmd "|", @cmd;
     while (<GFER>) {