From cbf7c9adde39ac857511fc85c1521205bd017328 Mon Sep 17 00:00:00 2001
From: kazu <kazu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Wed, 9 Jan 2008 13:10:31 +0000
Subject: [PATCH] * lib/mathn.rb (Prime#each): returns an enumerator if no
 block   given. [ruby-dev:32815]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@14970 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ChangeLog    | 5 +++++
 lib/mathn.rb | 1 +
 2 files changed, 6 insertions(+)

diff --git a/ChangeLog b/ChangeLog
index 9eaf3b7623..dfdbae66b0 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Wed Jan  9 22:04:17 2008  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
+
+	* lib/mathn.rb (Prime#each): returns an enumerator if no block
+	  given. [ruby-dev:32815]
+
 Wed Jan  9 22:03:26 2008  NARUSE, Yui  <naruse@ruby-lang.org>
 
 	* encoding.c (rb_enc_replicate): replica of dummy is a dummy.
diff --git a/lib/mathn.rb b/lib/mathn.rb
index 1c68a4bb03..3e24dd03f3 100644
--- a/lib/mathn.rb
+++ b/lib/mathn.rb
@@ -101,6 +101,7 @@ class Prime
   alias next succ
 
   def each
+    return to_enum(:each) unless block_given?
     loop do
       yield succ
     end