The vast majority of processing time is going to come from reading the files, not from running the script itself. I'd personally just keep things simple and do the tests individually, since there's only 4 of them and you can more easily edit the code later if the tests are separate.

In reply to Re: Regex Tuning /(?:(?:foo[34])|(?:bar[12]))\.txt/io by TedPride
in thread Regex Tuning /(?:(?:foo[34])|(?:bar[12]))\.txt/io by songahji

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