Syntax highlighting for rdoc embedded in ruby files?

[mgraham]

Is there any way to do highlighting for rdoc inside of ruby files?

For instance (from http://rdoc.sourceforge.net/doc/):

# The program takes an initial word or phrase from
# the command line (or in the absence of a
# parameter from the first line of standard
# input).  In then reads successive words or
# phrases from standard input and reports whether
# they are angrams of the first word.
#
# Author::    Dave Thomas  (mailto:dave@x.y)
# Copyright:: Copyright (c) 2002 The Pragmatic Programmers, LLC
# License::   Distributes under the same terms as Ruby

# This class holds the letters in the original
# word or phrase. The is_anagram? method allows us
# to test if subsequent words or phrases are
# anagrams of the original.
class Anagram

  # Remember the letters in the initial word
  def initialize(text)
    @initial_letters = letters_of(text)
  end
  # Test to see if a new word contains the same
  # letters as the original
  def is_anagram?(text)
    @initial_letters == letters_of(text)
  end

  # Determine the letters in a word or phrase
  #
  # * all letters are converted to lower case
  # * anything not a letter is stripped out
  # * the letters are converted into an array
  # * the array is sorted
  # * the letters are joined back into a string
  def letters_of(text)
    text.downcase.delete('^a-z').split('').sort.join
  end
end

tester = Anagram.new(ARGV.shift || gets)
ARGF.each do |text|
  puts "Anagram! " if tester.is_anagram? text
end