From b38b57cb5434746899d16556f148026430353b36 Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sat, 5 Sep 2015 03:58:07 +0000
Subject: [PATCH] rss.rb: don't substitute, just search

* lib/rss/rss.rb (Time#w3cdtf): don't substitute, just search
  zeros at EOS.  [ruby-core:70667] [Bug #11509]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51767 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 lib/rss/rss.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/rss/rss.rb b/lib/rss/rss.rb
index 224b576154..dbea3b5344 100644
--- a/lib/rss/rss.rb
+++ b/lib/rss/rss.rb
@@ -53,7 +53,7 @@ class Time
       if usec.zero?
         fraction_digits = 0
       else
-        fraction_digits = strftime('%6N').sub!(/0*\z/, '').size
+        fraction_digits = strftime('%6N').index(/0*\z/)
       end
       xmlschema(fraction_digits)
     end