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Subject: Re: Regular expression grouping not working?
Date: Mon, 17 Feb 2020 00:15:11 -0000 (UTC)
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FWIW, you might want to try rx for your regular expressions. It
generates regexes from a readable sexp syntax, and is included in Emacs
proper. It's way easier to modify and reason.  See "(elisp) Rx
Notation".