# Code by itself :
sub mz2 {
    $c = substr($string,0,201);
    $a = rindex($c,' ');
    ( $a == 201 ? $string : substr($string,0,$a));
}

## Bench addition :
MZS2      => '($chunk) = &mz2()',

## Bench output :
C:\WINDOWS\DESKTOP>perl index
Benchmark: running Hofmator, MZS2, MZSanford, japhy, tye, each for at least 3 CPU seconds...
  Hofmator:  4 wallclock secs ( 3.07 usr +  0.00 sys = 3.07 CPU) @ 37802.61/s (n=116054)
      MZS2:  4 wallclock secs ( 3.13 usr +  0.00 sys = 3.13 CPU) @ 44232.59/s (n=138448)
 MZSanford:  3 wallclock secs ( 3.19 usr +  0.00 sys = 3.19 CPU) @ 13159.87/s (n=41980)
     japhy:  3 wallclock secs ( 3.13 usr +  0.00 sys = 3.13 CPU) @ 49181.79/s (n=153939)
       tye:  4 wallclock secs ( 3.02 usr +  0.00 sys = 3.02 CPU) @ 51403.64/s (n=155239)