From: why the lucky stiff <ruby-talk@...>
Date: 2004-04-13T10:26:44+09:00
Subject: Re: Two different results for Module.nesting

Brian Marick wrote:

> Consider this:
>
>   module M1
>     module M2
>       class C
>         puts Module.nesting.inspect
>       end
>     end
>   end
>
> It produces  [M1::M2::C, M1::M2, M1], which I expected.
>
> Now try this:
>
>    M1::M2::C.class_eval("Module.nesting")
>
> It produces [M1::M2::C], which I did not expect. Why the difference? 
> Thanks.

It's returning the proper nesting.  But as you haven't opened each of 
the Modules individually to reach the C const, Module::nesting isn't 
returning them each individual.

Let's illustrate:

  module M1::M2
    class C
      puts Module.nesting.inspect
    end
  end
  #=> [M1::M2::C, M1::M2]

_why