From: Intransition <transfire@...>
Date: 2010-10-30T07:06:45+09:00
Subject: Constant lookup as-if toplevel

I'm evaluating a ruby script against a testing DSL that I wrote. Now I
would have loved to run the scripts at the toplevel, but the
contamination of the Object class makes that infeasible. So I run them
within a Scope object. Basically:

  class Scope < Module

    def initialize
      extend self
    end

    def execute(script, filename)
      eval(script, binding, filename)
    end

  end

My problem arises when a script uses a constant that isn't defined and
the error message looks like this:

  ERROR: NameError uninitialized constant #<Scope:0x7f3cc21e5630>::Foo

I'm trying to find a way to get rid of the `#<Scope:...>::` part. To
the end user it should at least *look* like things are running at
toplevel.

I tried adding to Scope:

  def inspect; ""; end

But that did not work. Any ideas?