1 files changed, 17 insertions, 0 deletions
diff --git a/attr.c b/attr.c
index 5493bff224..7e2134471c 100644
--- a/attr.c
+++ b/attr.c
@@ -603,6 +603,23 @@ struct attr_check *attr_check_initl(const char *one, ...)
 	return check;
 }
 
+struct attr_check *attr_check_dup(const struct attr_check *check)
+{
+	struct attr_check *ret;
+
+	if (!check)
+		return NULL;
+
+	ret = attr_check_alloc();
+
+	ret->nr = check->nr;
+	ret->alloc = check->alloc;
+	ALLOC_ARRAY(ret->items, ret->nr);
+	COPY_ARRAY(ret->items, check->items, ret->nr);
+
+	return ret;
+}
+
 struct attr_check_item *attr_check_append(struct attr_check *check,
 					  const struct git_attr *attr)
 {