# File lib/fakefs/fileutils.rb, line 295
    def uptodate?(new, old_list)
      return false unless File.exist?(new)
      new_time = File.mtime(new)
      old_list.each do |old|
        if File.exist?(old)
          return false unless new_time > File.mtime(old)
        end
      end
      true
    end