gistfile1.txt

ruby-1.8.7-p248 > module Foo
ruby-1.8.7-p248 ?>  def self.included(base)
ruby-1.8.7-p248 ?>    def base.do_foo
ruby-1.8.7-p248 ?>      define_method :write do
ruby-1.8.7-p248 >           puts "1"
ruby-1.8.7-p248 ?>        end
ruby-1.8.7-p248 ?>      end
ruby-1.8.7-p248 ?>    end
ruby-1.8.7-p248 ?>  end
 => nil 
ruby-1.8.7-p248 > module Bar
ruby-1.8.7-p248 ?>  def self.included(base)
ruby-1.8.7-p248 ?>    def base.do_bar
ruby-1.8.7-p248 ?>      define_method :write do
ruby-1.8.7-p248 >           puts "2"
ruby-1.8.7-p248 ?>        end
ruby-1.8.7-p248 ?>      end
ruby-1.8.7-p248 ?>    end
ruby-1.8.7-p248 ?>  end
 => nil 
ruby-1.8.7-p248 > class Thing
ruby-1.8.7-p248 ?>  include Foo
ruby-1.8.7-p248 ?>  do_foo
ruby-1.8.7-p248 ?>  include Bar
ruby-1.8.7-p248 ?>  do_bar
ruby-1.8.7-p248 ?>  end
 => #<Proc:0x0014fd34@(irb):16> 
ruby-1.8.7-p248 > Thing.new.write
2
 => nil 
ruby-1.8.7-p248 > class Thang
ruby-1.8.7-p248 ?>  include Bar
ruby-1.8.7-p248 ?>  do_bar
ruby-1.8.7-p248 ?>  include Foo
ruby-1.8.7-p248 ?>  do_foo
ruby-1.8.7-p248 ?>  end
 => #<Proc:0x0015b404@(irb):7> 
ruby-1.8.7-p248 > Thang.new.write
1
 => nil