# File cli/ruby-debug/commands/info.rb, line 238
    def info_files(*args)
      files = LineCache::cached_files
      files += SCRIPT_LINES__.keys unless 'stat' == args[0] 
      files.uniq.sort.each do |file|
        stat = LineCache::stat(file)
        path = LineCache::path(file)
        print "File %s", file
        if path and path != file
          print " - %s\n", path 
        else
          print "\n"
        end
        print "\t%s\n", stat.mtime if stat
      end
    end