ruby/ruby — pull request #207 by ndbroadbent (2012-10-28 07:42:30+00:00)
Title: Added #join method as a shortcut for to_a.join

I was suprised that `Set.new.join` gives me a NoMethodError. I have attached a small patch that adds a #join method to Set, which is a shortcut for `to_a.join`.

I've also opened an issue at [bugs.ruby-lang.org](http://bugs.ruby-lang.org/issues/7226#change-31829).