Just found another nice solution: 
$window=79;
$str="X" x 723;
print join "\n", unpack "A$window" x ((length($str)+$window-1)/$window
+), $str;

[download]
String is split by unpack into enough pieces of $window length. "A$window" is the pattern for one piece. This is multiplied by (length($str)+$window-1)/$window.
the resulting array is then joined with "\n";

In reply to Re: string length problems by Skeeve
in thread string length problems by Anonymous Monk

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