goodtoknow.rb

#!/usr/bin/env ruby-local-exec

require 'rubygems'
require 'active_support'
require 'active_support/core_ext'

class Foo
  def self.bar
    'bar'
  end
  def batz
    'batz'
  end
end

module MetaSkills
  extend ActiveSupport::Concern
  included do
    singleton_class.alias_method_chain :bar, :meta
    alias_method_chain :batz, :meta
  end
  module InstanceMethods
    def batz_with_meta
      "#{batz_without_meta}-metaskills"
    end
  end
  module ClassMethods
    def bar_with_meta
      "#{bar_without_meta}-metaskills"
    end
  end
end

Foo.send :include, MetaSkills
Foo.bar # => "bar-metaskills"
Foo.new.batz # => "batz-metaskills"