From: Stefan Monnier <monnier@iro.umontreal.ca>
To: Katsumi Yamaoka <yamaoka@jpl.org>
Cc: Kenichi Handa <handa@ni.aist.go.jp>, ding@gnus.org, emacs-devel@gnu.org
Subject: Re: [Unicode-2] `read' always returns multibyte symbol
Date: Wed, 14 Nov 2007 20:15:37 -0500 [thread overview]
Message-ID: <jwvr6iswbyv.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <b4mejesjsfa.fsf@jpl.org> (Katsumi Yamaoka's message of "Thu, 15 Nov 2007 08:52:57 +0900")
>>> ! ;; Use a unibyte buffer in order to make `read' read non-ASCII
>>> ! ;; group names (which have been encoded) as unibyte strings.
>>> ! (mm-with-unibyte-buffer
>>> ! (insert-buffer-substring cur)
>> Why is `cur' a multibyte buffer? Since it contains encoded strings, I'd
>> expect it would be better (more robust and convenient) to use a unibyte
>> buffer for it.
> Good point. The `cur' is `nntp-server-buffer' (" *nntpd*") or
> `gnus-work-buffer' (" *gnus work*") as the case may be.
Don't know about gnus-work-buffer, but nntp-server-buffer should only
ever contain unibyte data AFAICT, so it would be better to put it in
unibyte mode.
> Gnus uses those buffers for various purposes. Although there looks no
> situation where it is necessary to have multibyte data as far as I can
> observe, Gnus explicitly sets them as multibyte buffers (see
> `nnheader-init-server-buffer' and `gnus-set-work-buffer').
> I believe the reason they do so is to prevent from breaking data when
> copying them to another multibyte buffer (IIUC, copying data from
> a multibyte buffer to a unibyte buffer causes no problem).
I'm not sure I understand: copying data from a multibyte buffer to
a unibyte buffer is exactly the case that can cause problems.
Stefan
next prev parent reply other threads:[~2007-11-15 1:15 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-13 9:41 [Unicode-2] `read' always returns multibyte symbol Katsumi Yamaoka
2007-11-13 12:55 ` Kenichi Handa
2007-11-13 15:10 ` Stefan Monnier
2007-11-14 4:53 ` Kenichi Handa
2007-11-14 7:06 ` [Unicode-2] `C-h f' error (was Re: `read' always returns multibyte symbol) Katsumi Yamaoka
2007-11-14 13:01 ` Kenichi Handa
2007-11-15 2:06 ` [Unicode-2] `C-h f' error Katsumi Yamaoka
2007-11-19 8:31 ` Katsumi Yamaoka
2007-11-20 11:09 ` CHENG Gao
2007-11-21 10:55 ` Katsumi Yamaoka
2007-11-21 12:14 ` Kenichi Handa
2007-11-21 12:28 ` Katsumi Yamaoka
2007-11-22 2:27 ` Richard Stallman
2007-11-22 4:51 ` Kenichi Handa
2007-11-22 16:22 ` Richard Stallman
2007-11-23 15:20 ` Johan Bockgård
2007-11-25 12:35 ` Kenichi Handa
2007-12-02 21:27 ` Richard Stallman
2007-12-05 5:11 ` Kenichi Handa
2007-12-05 11:26 ` Katsumi Yamaoka
2007-11-25 12:39 ` Kenichi Handa
2007-11-14 3:56 ` [Unicode-2] `read' always returns multibyte symbol Katsumi Yamaoka
2007-11-14 11:39 ` Katsumi Yamaoka
2007-11-14 14:52 ` Stefan Monnier
2007-11-14 23:52 ` Katsumi Yamaoka
2007-11-15 1:15 ` Stefan Monnier [this message]
2007-11-15 3:01 ` Katsumi Yamaoka
2007-11-15 3:39 ` Stefan Monnier
2007-11-15 10:20 ` Katsumi Yamaoka
2007-11-15 11:08 ` Kenichi Handa
2007-11-15 11:41 ` Katsumi Yamaoka
2007-11-15 14:41 ` Kenichi Handa
2007-11-15 23:31 ` Katsumi Yamaoka
2007-11-16 0:51 ` Kenichi Handa
2007-11-16 1:24 ` Katsumi Yamaoka
2007-11-16 2:51 ` Stefan Monnier
2007-11-15 15:22 ` Stefan Monnier
2007-11-16 0:29 ` Kenichi Handa
2007-11-16 10:50 ` Eli Zaretskii
2007-11-13 15:07 ` Stefan Monnier
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