OK, I'm not really answering your question (I'm not using a regexp), and this is a method you have probably tried before, but if it's speed you want, how about simply converting the string to an array and looping once over its elements?
use strict;
my $string=" aaaa bbbbccccccccbbbb aaaabbbbbcddddddddddddddddd
+dddd";
my @listedstring= split//,$string;
my $prev=shift @listedstring;
my $currstart=my $index=0;
for (@listedstring) {
if ($_ eq $prev) {
$index++;
} else {
print "('$prev',$currstart,".($index-$currstart+1).")\n";
$currstart=++$index;
$prev=$_;
}
}
print "('$prev',$currstart,".($index-$currstart+1).")\n";
Interesting problem, BrowserUk!
CU Robartes-
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