exploiting the fact that a method aliasing itself adds the method onto the m_tbl of the receiver

traits in ruby.rb

# Traits in Ruby:

module M
  def self.included(c)
    c.class_eval do
      instance_methods.each do |m|
        alias_method m, m
      end
    end
    c.uninclude(self)
  end

  def hello
    :hello
  end
end

class C
  include M
end

# hello method injected directly into m_tbl of C
C.ancestors #=> [C, Object, ...]  # Module not included
C.new.hello #=> hello             # Yet method still accessible