From 790f6709ae418345829d12f053cf270f4d535f1c Mon Sep 17 00:00:00 2001
From: Kazuhiro NISHIYAMA <zn@mbf.nifty.com>
Date: Thu, 25 Apr 2019 23:46:37 +0900
Subject: [PATCH] Mention warning of `$,`

see [r67606](https://github.com/ruby/ruby/commit/3ee0648dc7a5465b2cbadd7246fc2edbd676d759)
---
 NEWS | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/NEWS b/NEWS
index fbd8082ef4..89565e7caf 100644
--- a/NEWS
+++ b/NEWS
@@ -39,6 +39,9 @@ sufficient information, see the ChangeLog file or Redmine
 * Setting <code>$;</code> to non-nil value is warned now.  Use of it in
   String#split is warned too.
 
+* Setting <code>$,</code> to non-nil value is warned now.  Use of it in
+  Array#join is warned too.
+
 === Core classes updates (outstanding ones only)
 
 Enumerable::