sane_grep: pass "-a" if grep accepts it

diff --git a/builtin/blame.c b/builtin/blame.c
index 245d253d041021429265eb81fb008e528613af34..6cac59c973bfcf1dc48e2a1af26375f914bb02c4 100644 (file)
--- a/builtin/blame.c
+++ b/builtin/blame.c
@@ -1371,8 +1371,15 @@ static void pass_whole_blame(struct scoreboard *sb,
  */
 static struct commit_list *first_scapegoat(struct rev_info *revs, struct commit *commit)
 {
-       if (!reverse)
+       if (!reverse) {
+               if (revs->first_parent_only &&
+                   commit->parents &&
+                   commit->parents->next) {
+                       free_commit_list(commit->parents->next);
+                       commit->parents->next = NULL;
+               }
                return commit->parents;
+       }
        return lookup_decoration(&revs->children, &commit->object);
 }
 
@@ -2684,7 +2691,9 @@ int cmd_blame(int argc, const char **argv, const char *prefix)
                sb.commits.compare = compare_commits_by_commit_date;
        }
        else if (contents_from)
-               die("--contents and --children do not blend well.");
+               die("--contents and --reverse do not blend well.");
+       else if (revs.first_parent_only)
+               die("combining --first-parent and --reverse is not supported");
        else {
                final_commit_name = prepare_initial(&sb);
                sb.commits.compare = compare_commits_by_reverse_commit_date;