From ecd0f1d966209742382e5bd4591bafc88152a697 Mon Sep 17 00:00:00 2001
From: aycabta <aycabta@gmail.com>
Date: Thu, 30 May 2019 18:29:26 +0900
Subject: Use negative lookahead and start_with?

---
 lib/reline/line_editor.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/reline/line_editor.rb b/lib/reline/line_editor.rb
index 805053fbff..af23367063 100644
--- a/lib/reline/line_editor.rb
+++ b/lib/reline/line_editor.rb
@@ -763,7 +763,7 @@ class Reline::LineEditor
     i = 0
     while i < @byte_pointer do
       slice = @line.byteslice(i, @byte_pointer - i)
-      if quote and slice =~ /\A(?<!\\)#{Regexp.escape(quote)}/ # closing "
+      if quote and slice.start_with?(/(?!\\)#{Regexp.escape(quote)}/) # closing "
         quote = nil
         i += 1
       elsif quote and slice =~ /\A\\#{Regexp.escape(quote)}/ # escaped \"
-- 
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