From: Paul Brannan <pbrannan@...>
Date: 2008-10-07T22:27:56+09:00
Subject: [ruby-core:19160] Re: [Feature #615] "with" operator

It might be fun if we could override instance_variable_get to access the
instance variables in one or both objects as well.

There shouldn't be much of a performance hit in the usual case if the
implementation uses a flag on the object to indicate the method is
redefined.

Paul