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-rw-r--r--commit.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/commit.c b/commit.c
index c99db162a4..aa3b35b6a8 100644
--- a/commit.c
+++ b/commit.c
@@ -705,6 +705,21 @@ struct commit_list *get_merge_bases(struct commit *one, struct commit *two,
return get_merge_bases_many(one, 1, &two, cleanup);
}
+int is_descendant_of(struct commit *commit, struct commit_list *with_commit)
+{
+ if (!with_commit)
+ return 1;
+ while (with_commit) {
+ struct commit *other;
+
+ other = with_commit->item;
+ with_commit = with_commit->next;
+ if (in_merge_bases(other, &commit, 1))
+ return 1;
+ }
+ return 0;
+}
+
int in_merge_bases(struct commit *commit, struct commit **reference, int num)
{
struct commit_list *bases, *b;