From 6df2f3d59c0222c3be5623cb03ab05c333d7f2bf Mon Sep 17 00:00:00 2001
From: akr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Tue, 21 Apr 2009 17:41:24 +0000
Subject: [PATCH] add comment.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@23250 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 time.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/time.c b/time.c
index dd1c0d88d1..881264d927 100644
--- a/time.c
+++ b/time.c
@@ -640,6 +640,9 @@ gmtimev(VALUE timev, struct vtm *result)
 static struct tm *localtime_with_gmtoff(const time_t *t, struct tm *result, long *gmtoff);
 
 /*
+ * The idea is come from Perl:
+ * http://use.perl.org/articles/08/02/07/197204.shtml
+ *
  * compat_common_month_table is generated by following program.
  * This table finds the last month which start the same day of a week.
  * The year 2037 is not used because