# File lib/linecache.rb, line 326
  def highlight_string(string, output_type)
    require 'rubygems'
    begin
      require 'coderay'
      require 'term/ansicolor'
    rescue LoadError
      return string
    end
    @@ruby_highlighter ||= CodeRay::Duo[:ruby, output_type]
    @@ruby_highlighter.encode(string)
  end