https://git.ruby-lang.org/ruby.git/commit/?id=37457117c9

From 37457117c941b700b150d76879318c429599d83f Mon Sep 17 00:00:00 2001
From: Kazuhiro NISHIYAMA <zn@m...>
Date: Thu, 17 Oct 2019 12:51:29 +0900
Subject: Use `\&` instead of `\1` with capture


diff --git a/lib/shellwords.rb b/lib/shellwords.rb
index a125b89..1eaddce 100644
--- a/lib/shellwords.rb
+++ b/lib/shellwords.rb
@@ -147,7 +147,7 @@ module Shellwords https://github.com/ruby/ruby/blob/trunk/lib/shellwords.rb#L147
     # Treat multibyte characters as is.  It is the caller's responsibility
     # to encode the string in the right encoding for the shell
     # environment.
-    str.gsub!(/([^A-Za-z0-9_\-.,:+\/@\n])/, "\\\\\\1")
+    str.gsub!(/[^A-Za-z0-9_\-.,:+\/@\n]/, "\\\\\\&")
 
     # A LF cannot be escaped with a backslash because a backslash + LF
     # combo is regarded as a line continuation and simply ignored.
-- 
cgit v0.10.2


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