From 764da87ab02d30c578138bdb0f37e7c18f2d4371 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Tue, 13 Dec 2022 15:18:42 +0900
Subject: [PATCH] [Bug #19195] Allow optional newlines before closing
 parenthesis

---
 parse.y                            | 2 +-
 test/ruby/test_pattern_matching.rb | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/parse.y b/parse.y
index 68352d7b79..2caea0f138 100644
--- a/parse.y
+++ b/parse.y
@@ -4901,7 +4901,7 @@ p_var_ref	: '^' tIDENTIFIER
                     }
 		;
 
-p_expr_ref	: '^' tLPAREN expr_value ')'
+p_expr_ref	: '^' tLPAREN expr_value rparen
 		    {
 		    /*%%%*/
 			$$ = NEW_BEGIN($3, &@$);
diff --git a/test/ruby/test_pattern_matching.rb b/test/ruby/test_pattern_matching.rb
index fbb934dc84..0337e5d945 100644
--- a/test/ruby/test_pattern_matching.rb
+++ b/test/ruby/test_pattern_matching.rb
@@ -464,6 +464,8 @@ END
         true
       end
     end
+
+    assert_valid_syntax("1 in ^(1\n)")
   end
 
   def test_array_pattern