# File lib/rubygems/indexer/master_index_builder.rb, line 25
  def cleanup
    super

    index_file_name = File.join @directory, @filename

    compress index_file_name, "Z"
    compressed_file_name = "#{index_file_name}.Z"

    paranoid index_file_name, compressed_file_name

    @files << compressed_file_name
  end