GNU bug report logs - #35708
[27.0.50]: thingatpt.el, thing-at-point-looking-at redundant

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Package: emacs;

Reported by: Andreas Röhler <andreas.roehler <at> easy-emacs.de>

Date: Mon, 13 May 2019 07:19:01 UTC

Severity: wishlist

Tags: notabug, wontfix

Done: Noam Postavsky <npostavs <at> gmail.com>

Bug is archived. No further changes may be made.

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Message #14 received at 35708 <at> debbugs.gnu.org (full text, mbox):

From: npostavs <at> gmail.com
To: Andreas Röhler <andreas.roehler <at> easy-emacs.de>
Cc: 35708 <at> debbugs.gnu.org, Noam Postavsky <npostavs <at> gmail.com>
Subject: Re: bug#35708: [27.0.50]: thingatpt.el,
 thing-at-point-looking-at redundant
Date: Mon, 13 May 2019 15:25:38 -0400

Andreas Röhler <andreas.roehler <at> easy-emacs.de> writes:

> Thought at something like below, which should pass the test:
>
> (defun ar-thing-at-point-looking-at (regexp)
>   "Return t if regexp matches at or before point, nil otherwise."
>   (save-excursion
>       (while (not (or (looking-at regexp)(bolp)))
>       (forward-char -1))
>       (looking-at regexp)))

I think it's an optimization to use re-search-backward instead of moving
on character at a time and calling looking-at in lisp.
This bug report was last modified 5 years and 362 days ago.

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