** ruby with xmpfilter
   :PROPERTIES:
   :DATE:     2011-06-10
   :END:
#+begin_src ruby :results xmp code
  2 + 2 # =>
  3.times{ puts :hello }
#+end_src

#+name:
#+BEGIN_SRC ruby
2 + 2 # => 4
3.times{ puts :hello }
# >> hello
# >> hello
# >> hello
#+END_SRC