From: Intransition <transfire@...>
Date: 2009-12-30T05:07:40+09:00
Subject: Re: Using #include at the instance level?

This is really becoming annoying. I can't even do it via a dynamic
class definitions either.

  module M
    def m1; "m1"; end
    module N
      def self.n1; "n1"; end
    end
  end

  class X
    class << self
      alias _new new
      def new(&block)
        klass = Class.new(self)
        klass.class_eval(&block)
        klass._new
      end
    end

    def m ; m1 ; end
    def n ; N.n1 ; end
  end

  x = X.new do
    include M
  end

  p x.m
  p x.n   #=> uninitialized constant X::N (NameError)

Did constant lookup change between 1.8.6 and 1.8.7? Seems to me this
used to be possible, and I find it unacceptable that normal constant
lookup would not apply to dynamic class definitions, let alone the
singleton classes.