From: Daniel Schierbeck <daniel.schierbeck@...>
Date: 2006-06-15T18:13:34+09:00
Subject: Re: Why the lack of mixing-in support for Class methods?

Update:

   class Module
     def class_extension(&block)
       @class_extension ||= Module.new
       @class_extension.module_eval(&block)
     end

     def included(mod)
       if not @class_extension.nil?
         mod.extend(@class_extension)
         if mod.instance_of? Module # better way?
           unless mod.instance_variables.include? "@class_extension"
             mod.instance_variable_set(:@class_extension, Module.new)
           end
           other = mod.instance_variable_get(:@class_extension)
           other.send(:include, @class_extension)
         end
       end
     end
   end


Cheers,
Daniel