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bug#23569: thing-at-point, source of slowness

From: Andreas Röhler
Subject: bug#23569: thing-at-point, source of slowness
Date: Thu, 8 Jul 2021 07:41:54 +0200
User-agent: Mozilla/5.0 (X11; Linux i686; rv:68.0) Gecko/20100101 Thunderbird/68.9.0

On 08.07.21 02:49, Lars Ingebrigtsen wrote:
Andreas Röhler <andreas.roehler@easy-emacs.de> writes:

in thingatpt.el:

;; The function bounds-of-thing-at-point finds the beginning and end
;; positions by moving first forward to the end of the "thing", and then
;; backwards to the beginning.


Also bounds-of-thing-at-point jumps to-and-fro, doing some sanity check every

Suggest to jump first at the beginning, as backward move might be slow.

Avoid to-and-fro, deliver tests instead, so first try will be reliable or
return nil.
(I'm going through old bug reports that unfortunately got little response at
the time.)

I'm not sure I understand the issue, even with the response you gave to
Eli at the time.

Do you have a test case that demonstrates this slowness, and an example
of how you'd change the code?

Thanks for your care. Don't think it's worth digging into that after that long time. Suggest to close.

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