From: Tanaka Akira <akr@...>
Date: 2013-05-20T10:16:16+09:00
Subject: [ruby-core:55068] Re: [ruby-cvs:48003] zzak:r40834 (trunk): * lib/pp.rb: Document PP::ObjectMixin [Fixes GH-312]

2013/5/20  <zzak@ruby-lang.org>:
> zzak    2013-05-20 03:17:51 +0900 (Mon, 20 May 2013)
>
>   New Revision: 40834
>
>   http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=40834
>
>   Log:
>     * lib/pp.rb: Document PP::ObjectMixin [Fixes GH-312]

I'll revert this because PP::ObjectMixin is not intended to be included
by users.
pp.rb includes it to Object.

Actually the described example works even without
"#include PP::ObjectMixin" from Cat class.
-- 
Tanaka Akira