You're right!

Moving the pos modification into the while loop body means that it only gets executed after successful (aligned) matches.

And that helps my performance a lot.

Thank you. Especially for persisting when I wasn't seeing the wood for the trees.

With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.

In reply to Re^8: A regex that only matches at offset that are multiples of a given N? (Update:almost perfect!) by BrowserUk
in thread A regex that only matches at offset that are multiples of a given N? by BrowserUk

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