From: Trans <transfire@...>
Date: 2009-02-15T22:43:09+09:00
Subject: Exercise in Frustration

I would like to see someone else do this. I've simplified the issue to
a small exercise. Given:

  module MyEnhancement

    def attr_accessor(*a)
      put "doing something special with #{a.join(' ')}"
      super(*a)
    end

  end

This module can be used in any class or module simply by using
#extend.

  class SomeClass
    extend MyEnhancement
  end

Great. However, I also want the end-user of this library to be able
effect all classes and modules with a single extend (or include) as
well, if they so choose. Eg.

    class Module
      include MyEnhancement
    end

It would also be nice if the module's methods can be made to work from
the toplevel (main):

   extend MyEnhancement

Of course, these last two pieces of code do not work.

In attempting to implement this, I have found myself resorting to
unDRY, ugly, hacky code, that always seems to have a bug in it
somewhere. It's infuriating. This is not how programming Ruby is
supposed to be!