Or you could use Forwardable#def_delegate

sobriquet.rb

module Sobriquet

  module CoreExt

    module Module

      # Use this in place of alias_method to create a _real_ alias, one that
      # actually calls the aliased method rather than taking a copy of it.      
      def sobriquet(new_name, old_name)
        method = instance_method(old_name)
        arity = method.arity.abs
        source_location = method.source_location

        args = ("a".."z").take(arity)
        args[-1] = "*#{args[-1]}" if method.arity < 0
        args = args.push("&block")
        args = args.join(",")

        definition = <<-EOE
          def #{new_name}(#{args})
            #{old_name}(#{args})
          end
        EOE

        class_eval(definition, source_location.first, source_location.last)
      end

    end

  end

end

class Module

  include Sobriquet::CoreExt::Module
  sobriquet :soubriquet, :sobriquet

end