GNU bug report logs - #47712
27.1; Provide `string-display-width` function, which takes properties into account, `substring-width`

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Package: emacs;

Reported by: Daniel Mendler <mail <at> daniel-mendler.de>

Date: Sun, 11 Apr 2021 21:17:02 UTC

Severity: normal

Found in version 27.1

Done: Eli Zaretskii <eliz <at> gnu.org>

Bug is archived. No further changes may be made.

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From: Eli Zaretskii <eliz <at> gnu.org>
To: mail <at> daniel-mendler.de
Cc: 47712 <at> debbugs.gnu.org
Subject: bug#47712: 27.1; Provide `string-display-width` function, which takes properties into account, `substring-width`
Date: Mon, 12 Apr 2021 17:32:56 +0300

> Date: Mon, 12 Apr 2021 17:15:17 +0300
> From: Eli Zaretskii <eliz <at> gnu.org>
> Cc: 47712 <at> debbugs.gnu.org
> 
> > But for we can still look at the micro benchmark.  The `string-width` 
> > function is 200 times faster than the `string-pixel-width` function. 
> 
> And if you reuse the same temp buffer?

My benchmarking indicates that reusing the buffer makes
string-pixel-width only 10 times slower than string-width, i.e. 50
about microseconds per call.
This bug report was last modified 4 years and 37 days ago.

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