From: Eli Zaretskii <eliz@gnu.org>
To: "João Távora" <joaotavora@gmail.com>
Cc: 54488@debbugs.gnu.org, dgutov@yandex.ru
Subject: bug#54488: 29.0.50; move-to-column/overlay-related regression in latest master, perhaps 28?
Date: Thu, 24 Mar 2022 18:59:09 +0200 [thread overview]
Message-ID: <83h77ncmn6.fsf@gnu.org> (raw)
In-Reply-To: <87ils3e3rk.fsf@gmail.com> (message from João Távora on Thu, 24 Mar 2022 16:03:59 +0000)
> From: João Távora <joaotavora@gmail.com>
> Cc: dgutov@yandex.ru, 54488@debbugs.gnu.org
> Date: Thu, 24 Mar 2022 16:03:59 +0000
>
> Eli Zaretskii <eliz@gnu.org> writes:
>
> >> An interesting one, though. I think I follow. Is there some easy way
> >> in Emacs to measure how many UTF-16 code units a given codepoint takes?
> >
> > That's easy: any codepoint above #xFFFF needs 2 UTF-16 code units.
>
> >> I'm afraid I evicted this knowledge from the cache since I made that fix
> >> 2,5 years ago... Is a "codepoint" here a character in a string/buffer?
> >
> > Yes.
>
> Indeed seems easy enough :-). So
>
> (defun measure (s) (cl-loop for c across s sum (if (> c #xFFFF) 2 1)))
>
> ?
Yes, I think so.
next prev parent reply other threads:[~2022-03-24 16:59 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-21 6:54 bug#54488: 29.0.50; move-to-column/overlay-related regression in latest master, perhaps 28? João Távora
2022-03-21 12:32 ` Eli Zaretskii
2022-03-21 16:37 ` João Távora
2022-03-21 17:05 ` Eli Zaretskii
2022-03-21 21:59 ` João Távora
2022-03-21 23:14 ` Dmitry Gutov
2022-03-22 9:48 ` João Távora
2022-03-22 12:16 ` Eli Zaretskii
2022-03-22 13:57 ` Eli Zaretskii
2022-03-22 14:31 ` Eli Zaretskii
2022-03-22 14:54 ` João Távora
2022-03-22 15:22 ` Eli Zaretskii
2022-03-22 16:06 ` João Távora
2022-03-22 16:53 ` Eli Zaretskii
2022-03-22 21:05 ` João Távora
2022-03-22 23:55 ` Dmitry Gutov
2022-03-23 1:11 ` João Távora
2022-03-23 3:39 ` Eli Zaretskii
2022-03-23 10:10 ` João Távora
2022-03-23 11:08 ` João Távora
2022-03-23 14:21 ` Eli Zaretskii
2022-03-24 15:01 ` João Távora
2022-03-24 15:29 ` Eli Zaretskii
2022-03-24 16:03 ` João Távora
2022-03-24 16:59 ` Eli Zaretskii [this message]
2022-03-23 3:34 ` Eli Zaretskii
2022-03-23 3:29 ` Eli Zaretskii
2022-03-23 10:04 ` João Távora
2022-03-23 13:23 ` Eli Zaretskii
2022-03-24 14:54 ` João Távora
2022-03-22 12:33 ` Dmitry Gutov
2022-03-22 13:50 ` João Távora
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