push @x, $1 while /(?=((\d)(\d)(?(?{ $3 <= $2 })(?!))))/g;

Bravo! That's the one I was looking for. I had a vague idea that it could be done within the regex, but I didn't know how to start.

Of course, I had to study pelre for a half an hour to understand what you'd done. But I learned 3 or 4 new things about Perl on the way. The neat thing is, I'd looked at those parts of perlre before. But I couldn't make heads or tails of them without your example.

Thanks!

throop

In reply to Re^4: Global regexp by throop
in thread Global regexp by Anonymous Monk

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