worktree: disallow adding same path multiple times

diff --git a/oidset.c b/oidset.c
index f1f874aaad2c0375eb80d3b714ae6ad460c75ddc..454c54f93396efccfb9957423931d0ea727ff340 100644 (file)
--- a/oidset.c
+++ b/oidset.c
@@ -24,6 +24,16 @@ int oidset_insert(struct oidset *set, const struct object_id *oid)
        return 0;
 }
 
+int oidset_remove(struct oidset *set, const struct object_id *oid)
+{
+       struct oidmap_entry *entry;
+
+       entry = oidmap_remove(&set->map, oid);
+       free(entry);
+
+       return (entry != NULL);
+}
+
 void oidset_clear(struct oidset *set)
 {
        oidmap_free(&set->map, 1);