From: Ulrich Mueller <ulm@gentoo.org>
To: Eli Zaretskii <eliz@gnu.org>
Cc: emacs-devel@gnu.org
Subject: Re: UTF-32
Date: Fri, 07 Jul 2023 12:34:17 +0200 [thread overview]
Message-ID: <upm549fiu@gentoo.org> (raw)
In-Reply-To: <83y1jsf2me.fsf@gnu.org> (Eli Zaretskii's message of "Fri, 07 Jul 2023 13:16:25 +0300")
>>>>> On Fri, 07 Jul 2023, Eli Zaretskii wrote:
>> >> On a different tangent, Emacs doesn't seem to know about UTF-32, which
>> >> I find a little surprising.
>> >>
>> >> Is there simply no need for that encoding, or am I missing something?
>>
>> > There's no need. We don't support character codepoints that are wider
>> > than 32 bits.
>>
>> IIUC UTF-32 (aka UCS-4) encodes only Unicode codepoints, and it encodes
>> every character as 4 bytes.
>>
>> https://www.unicode.org/reports/tr19/tr19-9.html
> Yes, I know. Not sure why you posted this, though. If you are saying
> that this somehow contradicts what I wrote above, please elaborate,
> because I don't see the contradiction.
I don't understand how "codepoints that are wider than 32 bits"
are related to UTF-32. UTF-8, UTF-16, and UTF-32 all encode the same
repertoire (U+0000 to U+10FFFF).
Emacs knows about UTF-8 and UTF-16 but not about UTF-32. Is it an
unreasonable question to ask why that is so? (Just out of interest,
I do not challenge it, and I have no need for UTF-32.)
next prev parent reply other threads:[~2023-07-07 10:34 UTC|newest]
Thread overview: 97+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-23 11:46 Disambiguate modeline character for UTF-8? Ulrich Mueller
2020-08-23 15:27 ` Stefan Monnier
2020-08-23 16:07 ` Eli Zaretskii
2020-08-23 18:24 ` Paul Eggert
2020-08-23 18:53 ` Ulrich Mueller
2020-08-23 18:56 ` Eli Zaretskii
2020-08-23 18:57 ` Eli Zaretskii
2020-08-23 19:13 ` Ulrich Mueller
2020-08-23 19:42 ` Eli Zaretskii
2020-08-23 21:23 ` Stefan Monnier
2020-08-24 7:06 ` Ulrich Mueller
2020-08-24 14:30 ` Yuri Khan
2020-08-29 11:17 ` Ulrich Mueller
2020-08-24 14:36 ` Drew Adams
2020-08-24 15:23 ` Ulrich Mueller
2020-08-24 16:43 ` Stefan Monnier
2023-07-05 10:08 ` Ulrich Mueller
2023-07-05 11:41 ` Eli Zaretskii
2023-07-05 13:04 ` Ulrich Mueller
2023-07-05 13:44 ` Eli Zaretskii
2023-07-05 21:50 ` Ulrich Mueller
2023-07-05 22:11 ` Paul Eggert
2023-07-06 8:51 ` Ulrich Mueller
2023-07-06 5:33 ` Eli Zaretskii
2023-07-06 8:47 ` Ulrich Mueller
2023-07-06 9:20 ` Eli Zaretskii
2023-07-06 9:46 ` Ulrich Mueller
2023-07-06 12:34 ` Po Lu
2023-07-06 12:32 ` Po Lu
2023-07-06 12:31 ` Po Lu
2023-07-06 13:02 ` Andreas Schwab
2023-07-06 13:08 ` Ulrich Mueller
2023-07-06 17:37 ` Paul Eggert
2023-07-06 18:13 ` Eli Zaretskii
2023-07-06 18:44 ` Ulrich Müller
2023-07-06 19:01 ` Eli Zaretskii
2023-07-06 19:31 ` Ulrich Mueller
2023-07-07 5:18 ` Eli Zaretskii
2023-07-07 5:48 ` Ulrich Müller
2023-07-07 6:16 ` Po Lu
2023-07-07 6:41 ` Ulrich Mueller
2023-07-07 7:38 ` Po Lu
2023-07-07 9:44 ` Ulrich Mueller
2023-07-07 10:21 ` Eli Zaretskii
2023-07-07 10:42 ` Ulrich Mueller
2023-07-07 12:04 ` Po Lu
2023-07-07 13:01 ` Ulrich Mueller
2023-07-07 13:38 ` Po Lu
2023-07-07 12:01 ` Po Lu
2023-07-07 12:38 ` Andreas Schwab
2023-07-07 13:37 ` Po Lu
2023-07-07 13:45 ` Andreas Schwab
2023-07-07 12:58 ` Eli Zaretskii
2023-07-08 8:49 ` Eli Zaretskii
2023-07-08 15:27 ` Basil Contovounesios
2023-07-08 15:38 ` Eli Zaretskii
2023-07-08 16:21 ` Basil Contovounesios
2023-07-08 16:33 ` Eli Zaretskii
2023-07-08 16:57 ` Basil Contovounesios
2023-07-08 18:21 ` Ulrich Mueller
2023-07-08 21:31 ` Basil Contovounesios
2023-07-09 9:22 ` Lisp reader syntax and bootstrap (was: Re: Disambiguate modeline character for UTF-8?) Ulrich Mueller
2023-07-09 9:57 ` Lisp reader syntax and bootstrap Po Lu
2023-07-13 2:04 ` Richard Stallman
2023-07-13 4:27 ` Po Lu
2023-07-13 22:07 ` Paul Eggert
2023-07-14 5:05 ` Ulrich Mueller
2023-07-14 6:57 ` Paul Eggert
2023-07-15 2:10 ` Richard Stallman
2023-07-15 2:38 ` Po Lu
2023-07-15 5:18 ` Philip Kaludercic
2023-07-15 5:50 ` Po Lu
2023-07-15 15:22 ` Paul Eggert
2023-07-17 2:22 ` Richard Stallman
2023-07-17 5:26 ` Paul Eggert
2023-07-17 2:32 ` Po Lu
2023-07-16 2:19 ` Richard Stallman
2023-07-09 11:35 ` Lisp reader syntax and bootstrap (was: Re: Disambiguate modeline character for UTF-8?) Eli Zaretskii
2023-07-07 0:19 ` Disambiguate modeline character for UTF-8? Po Lu
2023-07-06 12:27 ` Po Lu
2023-07-07 7:09 ` UTF-32 (was: Re: Disambiguate modeline character for UTF-8?) Ulrich Mueller
2023-07-07 7:34 ` Eli Zaretskii
2023-07-07 8:20 ` UTF-32 Ulrich Mueller
2023-07-07 10:16 ` UTF-32 Eli Zaretskii
2023-07-07 10:34 ` Ulrich Mueller [this message]
2023-07-07 12:49 ` UTF-32 Eli Zaretskii
2023-07-07 13:24 ` UTF-32 Andreas Schwab
2023-07-07 13:36 ` UTF-32 Ulrich Mueller
2023-07-07 14:06 ` UTF-32 Eli Zaretskii
2023-07-05 12:49 ` Disambiguate modeline character for UTF-8? Stefan Monnier
2023-07-05 13:38 ` Eli Zaretskii
2023-07-06 19:07 ` Filipp Gunbin
2020-08-23 19:47 ` Stefan Kangas
2020-08-24 18:35 ` Juri Linkov
2020-08-24 18:55 ` Eli Zaretskii
2020-08-25 18:59 ` Juri Linkov
2020-08-25 19:26 ` Eli Zaretskii
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