Not enought laconically, although fast enought: 
$string ='    aaaa    bbbbccccccccbbbb   aaaabbbbbcddddddddddddddddddd
+d';

$l = length($string);
$pp = 0;
while ($pp < $l) {
  $c = substr $string, $pp, 1;
    if ($string =~ /\G\Q$c\E+/gc) {
        print "('$c',", $pp, ",",pos($string) - $pp,")\n";
        $pp = pos($string);
    }
}

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In reply to Re: Efficient run determination. by rasta
in thread Efficient run determination. by BrowserUk

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