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bug#20258: 24.5; format-time-string miscounting of multibyte characters
From: |
Eli Zaretskii |
Subject: |
bug#20258: 24.5; format-time-string miscounting of multibyte characters |
Date: |
Mon, 30 Sep 2019 10:01:17 +0300 |
> From: Lars Ingebrigtsen <larsi@gnus.org>
> Date: Mon, 30 Sep 2019 05:09:08 +0200
> Cc: stefan@marxist.se, gunnar.horrigmo@usit.uio.no
>
> A field width N is an unsigned decimal integer with a leading digit nonzero.
> %NX is like %X, but takes up at least N positions.
> ---
>
> But the natural interpretation of "positions" isn't bytes, I think, and
> if is, then the doc string should say so.
>
> (let ((system-time-locale "nb_NO.UTF-8"))
> (format-time-string "%6a" (date-to-time "Sat Apr 4 16:14:40 2015")))
> => " lø."
>
> (if you have that locale in /etc/locale.gen.)
>
> But I seem to remember from previous discussions that this quirk is in
> the C strftime function? And Emacs just call it?
Yes, that's true.
> So I think what WIDTH means should be said explicitly in the doc string.
It can only warn that WIDTH _might_ be measured in bytes, since the
underlying implementation of strftime just might DTRT. Or not.
I think this should be raised as a bug to glibc developers, as their
documentation says "characters", according to my reading.
- bug#20258: 24.5; format-time-string miscounting of multibyte characters, Stefan Kangas, 2019/09/29
- bug#20258: 24.5; format-time-string miscounting of multibyte characters, Lars Ingebrigtsen, 2019/09/29
- bug#20258: 24.5; format-time-string miscounting of multibyte characters,
Eli Zaretskii <=
- bug#20258: 24.5; format-time-string miscounting of multibyte characters, Andreas Schwab, 2019/09/30
- bug#20258: 24.5; format-time-string miscounting of multibyte characters, Eli Zaretskii, 2019/09/30
- bug#20258: 24.5; format-time-string miscounting of multibyte characters, Lars Ingebrigtsen, 2019/09/30
- bug#20258: 24.5; format-time-string miscounting of multibyte characters, Eli Zaretskii, 2019/09/30
- bug#20258: 24.5; format-time-string miscounting of multibyte characters, Lars Ingebrigtsen, 2019/09/30
- bug#20258: 24.5; format-time-string miscounting of multibyte characters, Gunnar Horrigmo, 2019/09/30
- bug#20258: 24.5; format-time-string miscounting of multibyte characters, Eli Zaretskii, 2019/09/30
- bug#20258: 24.5; format-time-string miscounting of multibyte characters, Eli Zaretskii, 2019/09/30
- bug#20258: 24.5; format-time-string miscounting of multibyte characters, Lars Ingebrigtsen, 2019/09/30