Allow trailing comma in hash pattern

(cherry picked from commit d25a4f413dce6ad3a8baaf61591415b9a8cce082)

1 files changed, 4 insertions, 0 deletions

diff --git a/parse.y b/parse.y
index c767637adf..b1a7e08e54 100644
--- a/parse.y
+++ b/parse.y
@@ -4053,6 +4053,10 @@ p_kwargs	: p_kwarg ',' p_kwrest
 		    {
 			$$ =  new_hash_pattern_tail(p, new_unique_key_hash(p, $1, &@$), 0, &@$);
 		    }
+		| p_kwarg ','
+		    {
+			$$ =  new_hash_pattern_tail(p, new_unique_key_hash(p, $1, &@$), 0, &@$);
+		    }
 		| p_kwrest
 		    {
 			$$ =  new_hash_pattern_tail(p, new_hash(p, Qnone, &@$), $1, &@$);