From: Roger Pack <roger.pack@...>
Date: 2008-11-04T05:06:37+09:00
Subject: [ruby-core:19688] Re: [Feature #709] Enumerator#+

> if __FILE__ == $0
>  a = (1..3).to_enum + (10..12).to_enum + (17..20).to_enum
>  a.each { |i| puts i }
> end

So you expect this to output
28
31
35
?