GNU bug report logs - #49887
[Feature request] Lookaround assertions in Elisp regexps

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Package: emacs;

Reported by: Brian Leung <leungbk <at> mailfence.com>

Date: Thu, 5 Aug 2021 01:58:02 UTC

Severity: wishlist

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Report forwarded to bug-gnu-emacs <at> gnu.org:
bug#49887; Package emacs. (Thu, 05 Aug 2021 01:58:02 GMT) Full text and rfc822 format available.
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New bug report received and forwarded. Copy sent to bug-gnu-emacs <at> gnu.org. (Thu, 05 Aug 2021 01:58:02 GMT) Full text and rfc822 format available.

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From: Brian Leung <leungbk <at> mailfence.com>
To: Bug Gnu Emacs <bug-gnu-emacs <at> gnu.org>
Subject: [Feature request] Lookaround assertions in Elisp regexps
Date: Thu, 5 Aug 2021 03:56:51 +0200 (CEST)

It would be nice if Emacs Lisp regexps supported positive- and negative-lookahead/behind assertions. After Tomohiro Matsuyama attempted to submit a patch in 2009, there was a subsequent discussion (https://emacs-devel.gnu.narkive.com/cpv75xJJ/patch-for-lookaround-assertion-in-regexp) that suggested some possible avenues but ultimately did not lead to anything concrete.

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This bug report was last modified 2 years and 259 days ago.

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