From: Kenichi Handa <handa@m17n.org>
Cc: jas@extundo.com, emacs-devel@gnu.org
Subject: Re: eight-bit char handling in emacs-unicode
Date: Thu, 27 Nov 2003 10:34:45 +0900 (JST) [thread overview]
Message-ID: <200311270134.KAA28664@etlken.m17n.org> (raw)
In-Reply-To: <jwvhe0rp6ml.fsf-monnier+emacs/devel@vor.iro.umontreal.ca> (message from Stefan Monnier on 26 Nov 2003 09:14:03 -0500)
In article <jwvhe0rp6ml.fsf-monnier+emacs/devel@vor.iro.umontreal.ca>, Stefan Monnier <monnier@IRO.UMontreal.CA> writes:
>>> but since the output is a unibyte string,
>>> that restrict it to cases where the code-points can be encoded in 8 bits,
>>> thus it doesn't sound very generic
>> Yes. But I thought generic or not is not a point here.
> Except that if it's not generic (in the sense that it does not behave
> meaningfully in all language environments), then it can't be used in generic
> elisp code, right?
Yes. But, it simply means that insertion of multibyte
string in a unibyte buffer can't be generic.
>> My examples shows that we can't use encode-coding-string.
>> How can we use encode-coding-string without knowing what
>> coding system to use? I haven't heard your answer yet.
> I can't answer this question without knowing the answer to my question:
> what is string-make-unibyte used for.
It is used for converting a multibyte string to unibyte
before it is inserted in a unibyte buffer.
> I'm not saying that we can do something like:
> (defun string-make-unibyte (s) (encode-coding-string s <blabla>))
??? I have thought that you are saying that because you
wrote below:
> To do what your string-make-unibyte does you should use
> `encode-coding-string' where the coding system is passed explicitly.
Anyway,
> but I'm saying that everywhere where the current string-make-unibyte is
> used, we should be able to easily replace it by a call to
> encode-coding-string or a code to my make-string-unibyte (which does
> not pay attention to the language environment and only accepts multibyte
> chars that correspond to bytes, i.e. eight-bit-control or
> eight-bit-graphic, or ASCII, and multibyte chars whose internal code point
> is 128-255).
It's an ambiguous statement. Which are you sauing?
Replace string-make-unibyte by:
(1) encode-coding-string or make-string-unibyte.
(2) a code that applies encode-coding-string or
make-string-unibyte to the whole string depending on
something (perhaps on the input string?).
(3) a code that applies encode-coding-string to substrings
where that is appropriate, and applies make-string-unibyte
to the remaing substrings.
(4) something that I still don't understand.
>>> I don't see any use of string-make-unibyte in your two examples.
>> Again, I'd like to ask how to use encode-coding-string
>> without knowing the proper coding-system in each case.
> How could I know the coding-system to use when replacing
> `string-make-unibyte' if I don't have any actual call to
> string-make-unibyte to work with ?
What a strange logic?!? You have been argued that we should
replace string-make-unibyte with something that uses
encode-coding-string. Then you should have an idea about
what coding-system to use for encode-coding-string.
---
Ken'ichi HANDA
handa@m17n.org
next prev parent reply other threads:[~2003-11-27 1:34 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-11-12 16:11 BIG5-HKSCS? Simon Josefsson
2003-11-13 1:53 ` BIG5-HKSCS? Kenichi Handa
2003-11-13 4:14 ` BIG5-HKSCS? Simon Josefsson
2003-11-13 5:34 ` BIG5-HKSCS? Kenichi Handa
2003-11-13 5:50 ` BIG5-HKSCS? Simon Josefsson
2003-11-13 4:49 ` BIG5-HKSCS? Simon Josefsson
2003-11-13 6:10 ` BIG5-HKSCS? Kenichi Handa
2003-11-13 6:51 ` BIG5-HKSCS? Simon Josefsson
2003-11-13 9:01 ` BIG5-HKSCS? Kenichi Handa
2003-11-13 13:29 ` BIG5-HKSCS? Oliver Scholz
2003-11-13 23:40 ` BIG5-HKSCS? Kenichi Handa
2003-11-14 13:35 ` BIG5-HKSCS? Oliver Scholz
2003-11-13 16:34 ` BIG5-HKSCS? Simon Josefsson
2003-11-14 0:47 ` eight-bit char handling in emacs-unicode Kenichi Handa
2003-11-14 13:25 ` Oliver Scholz
2003-11-15 1:09 ` Kenichi Handa
2003-11-15 10:26 ` Oliver Scholz
2003-11-15 21:47 ` Simon Josefsson
2003-11-15 3:04 ` Simon Josefsson
2003-11-16 15:03 ` Alex Schroeder
2003-11-17 21:17 ` Stefan Monnier
2003-11-18 7:33 ` Kenichi Handa
2003-11-18 17:12 ` Stefan Monnier
2003-11-19 0:06 ` Kenichi Handa
2003-11-19 3:05 ` Stefan Monnier
2003-11-19 10:46 ` Juri Linkov
2003-11-19 13:48 ` Stefan Monnier
2003-11-20 23:41 ` Kenichi Handa
2003-11-21 0:41 ` Kenichi Handa
2003-11-21 5:27 ` Stefan Monnier
2003-11-21 6:27 ` Kenichi Handa
2003-11-21 14:59 ` Stefan Monnier
2003-11-22 1:25 ` Kenichi Handa
2003-11-22 23:53 ` Stefan Monnier
2003-11-23 7:30 ` Kenichi Handa
2003-11-23 23:48 ` Stefan Monnier
2003-11-25 1:07 ` Kenichi Handa
[not found] ` <jwvfzgcsbuv.fsf-monnier+emacs/devel@vor.iro.umontreal.ca>
2003-11-26 0:07 ` Kenichi Handa
2003-11-26 14:14 ` Stefan Monnier
2003-11-27 1:34 ` Kenichi Handa [this message]
2003-11-27 14:23 ` Stefan Monnier
2003-12-01 0:43 ` Kenichi Handa
2003-12-01 16:15 ` Stefan Monnier
2003-12-02 13:07 ` Kenichi Handa
2003-12-02 16:06 ` Stefan Monnier
2003-11-25 4:28 ` Richard Stallman
[not found] ` <jwv7k1gtswz.fsf-monnier+emacs/devel@vor.iro.umontreal.ca>
2003-12-09 21:49 ` Richard Stallman
2003-11-15 22:32 ` BIG5-HKSCS? Simon Josefsson
2003-11-17 1:12 ` BIG5-HKSCS? Kenichi Handa
2003-11-17 2:06 ` BIG5-HKSCS? Simon Josefsson
2003-11-17 5:45 ` BIG5-HKSCS? Eli Zaretskii
2003-11-17 7:43 ` BIG5-HKSCS? Simon Josefsson
2003-11-18 7:01 ` BIG5-HKSCS? Richard Stallman
2003-11-18 8:56 ` BIG5-HKSCS? Simon Josefsson
2003-11-19 5:15 ` BIG5-HKSCS? Richard Stallman
2003-11-20 5:48 ` BIG5-HKSCS? Simon Josefsson
2003-11-20 5:56 ` BIG5-HKSCS? Eli Zaretskii
2003-11-20 6:20 ` BIG5-HKSCS? Simon Josefsson
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