- if (!defined $r0 || !defined $parent) {
- my ($base, $head) = parse_revision_argument(0, $r);
- if ($base <= $r) {
+ {
+ my ($base, $head);
+ if (!defined $r0 || !defined $parent) {
+ ($base, $head) = parse_revision_argument(0, $r);
+ } else {
+ if ($r0 < $r) {
+ $gs->ra->get_log([$gs->{path}], $r0 + 1, $r, 1,
+ 0, 1, sub { $base = $_[1] - 1 });
+ }
+ }
+ if (defined $base && $base <= $r) {