From fe9719a1d27939400c466a0d8ef04d8a680018c4 Mon Sep 17 00:00:00 2001
From: John Benediktsson <mrjbq7@gmail.com>
Date: Thu, 11 Aug 2022 23:06:38 -0700
Subject: [PATCH] xmode.marker: adding a better matching paren finder

---
 basis/xmode/marker/marker.factor | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/basis/xmode/marker/marker.factor b/basis/xmode/marker/marker.factor
index 204e108f3f..0fbeb2ef2c 100644
--- a/basis/xmode/marker/marker.factor
+++ b/basis/xmode/marker/marker.factor
@@ -103,8 +103,17 @@ M: regexp text-matches?
 : nth-group-start ( n raw -- n )
     [ -1 ] 2dip '[ dup [ 1 + _ group-start ] when ] times ;
 
+: matching-paren ( str -- to )
+    0 swap [
+        {
+            { CHAR: ( [ 1 + ] }
+            { CHAR: ) [ 1 - ] }
+            [ drop ]
+        } case dup zero?
+    ] find drop nip ;
+
 : nth-group ( n raw -- before nth )
-    [ nth-group-start ] keep swap cut CHAR: ) over index 1 + head ;
+    [ nth-group-start ] keep swap cut dup matching-paren 1 + head ;
 
 : match-group-regexp ( regexp n -- skip-regexp match-regexp )
     [ [ options>> options>string ] [ raw>> ] bi ] dip swap
-- 
2.34.1