--- dump

    ʸɽʸХåå嵭ˡ֤ʸ
    ֤ޤstr == eval(str.dump) Ȥʤ뤳ȤݾڤƤޤ

        puts "abc\r\n\f\x00\b10\\\"".dump  #=> "abc\r\n\f\000\01010\\\""

