# File lib/gauntlet_rubyparser.rb, line 35
  def diff_pp o1, o2
    require 'pp'

    file_a = Tempfile.new('ruby_parser_a')
    PP.pp o1, file_a
    file_a.close

    file_b = Tempfile.new('ruby_parser_b')
    PP.pp o2, file_b
    file_b.close


    `diff -u #{file_a.path} #{file_b.path}`
  ensure
    file_a.unlink
    file_b.unlink
  end