It seems to me like I saw some way... maybe using (?{ }) or (??{ }) that you could force a failure of the regexp (or current branch). But I can't for the life of me remember what it was.

A completely contrived example would be only matching numbers divisible by three, where you would do something like /(\d+)(?{ !($^N%3) })/... though this of course doesn't actually work.

Can anyone help, or am I remembering things that aren't there?

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In reply to Programmatically forcing a regexp to fail by suaveant

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