* 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

1 files changed, 1 insertions, 0 deletions

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