# File lib/chef/cookbook_version.rb, line 647
    def relative_filenames_in_preferred_directory(node, segment, dirname)
      preferences = preferences_for_path(node, segment, dirname)
      filenames_by_pref = Hash.new
      preferences.each { |pref| filenames_by_pref[pref] = Array.new }

      manifest[segment].each do |manifest_record|
        manifest_record_path = manifest_record[:path]

        # find the NON SPECIFIC filenames, but prefer them by filespecificity.
        # For example, if we have a file:
        # 'files/default/somedir/somefile.conf' we only keep
        # 'somedir/somefile.conf'. If there is also
        # 'files/$hostspecific/somedir/otherfiles' that matches the requested
        # hostname specificity, that directory will win, as it is more specific.
        #
        # This is clearly ugly b/c the use case is for remote directory, where
        # we're just going to make cookbook_files out of these and make the
        # cookbook find them by filespecificity again. but it's the shortest
        # path to "success" for now.
        if manifest_record_path =~ /(#{Regexp.escape(segment.to_s)}\/[^\/]+\/#{Regexp.escape(dirname)})\/.+$/
          specificity_dirname = $1
          non_specific_path = manifest_record_path[/#{Regexp.escape(segment.to_s)}\/[^\/]+\/#{Regexp.escape(dirname)}\/(.+)$/, 1]
          # Record the specificity_dirname only if it's in the list of
          # valid preferences
          if filenames_by_pref[specificity_dirname]
            filenames_by_pref[specificity_dirname] << non_specific_path
          end
        end
      end

      best_pref = preferences.find { |pref| !filenames_by_pref[pref].empty? }

      raise Chef::Exceptions::FileNotFound, "cookbook #{name} has no directory #{segment}/default/#{dirname}" unless best_pref

      filenames_by_pref[best_pref]

    end