From: "Stefan Monnier" <monnier+gnu/emacs@rum.cs.yale.edu>
Cc: monnier+gnu/emacs@rum.cs.yale.edu
Subject: Re: unibyte<->multibyte conversion [Re: Emacs-diffs Digest, Vol 2, Issue 28]
Date: Mon, 20 Jan 2003 19:54:28 -0500 [thread overview]
Message-ID: <200301210054.h0L0sST12789@rum.cs.yale.edu> (raw)
In-Reply-To: 200301210020.JAA17567@etlken.m17n.org
> > While we're at it, how about making string-as-multibyte obsolete ?
> > It's not used much and it has been abused many times in the past.
>
> It is useful for instance in this scenario. I don't
> remember a concrete example, but some package is doing this
> kind of thing.
>
> Read a file of weird encoding in a unibyte buffer. Parse
> the contents and do decode-coding-region one bunch by one
> with different coding systems. Extract some part from that
> unibyte buffer and insert it in a mulitbyte buffer. The
> last step is:
> (let ((str (buffer-substring FROM TO)))
> (save-excursion
> (set-buffer MULTIBYTE-BUF)
> (insert (string-as-multibyte str))))
Without a concrete example I don't find this scenario compelling.
E.g. I fail to see why it should do
decode-coding-region + buffer-substring + string-as-multibyte
rather than
buffer-substring + decode-coding-string
But even if the scenario is possible,
using (decode-coding-region str 'emacs-mule) doesn't seem much worse
than (string-as-multibyte str), so I'm not sure how relevant it is
to whether or not we should obsolete string-as-multibyte.
> > Also, I believe it's more or less equivalent to
> > (decode-coding-string str 'emacs-mule)
>
> Yes, for the moment. But, in emacs-unicode, we must change
> it to:
> (decode-coding-string str 'utf-8-emacs)
> On the other hand, we don't have to change a code using
> string-as-multibyte.
So I hereby suggest (define-coding-system-alias 'internal 'emacs-mule)
which we can happily change in Emacs-22 to `utf-8-emacs', such that
we will still have
(string-as-multibyte str) == (decode-coding-string str 'internal)
-- Stefan
next prev parent reply other threads:[~2003-01-21 0:54 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <E18ZDQC-0003mt-02@monty-python.gnu.org>
2003-01-18 0:48 ` Emacs-diffs Digest, Vol 2, Issue 28 Richard Stallman
2003-01-18 12:35 ` Kim F. Storm
2003-01-18 12:40 ` Eli Zaretskii
2003-01-20 0:49 ` Richard Stallman
2003-01-20 2:29 ` unibyte<->multibyte conversion [Re: Emacs-diffs Digest, Vol 2, Issue 28] Kenichi Handa
2003-01-20 18:48 ` Eli Zaretskii
2003-01-20 20:55 ` Stefan Monnier
2003-01-21 0:20 ` Kenichi Handa
2003-01-21 0:54 ` Stefan Monnier [this message]
2003-01-21 5:57 ` Eli Zaretskii
2003-01-22 9:59 ` Richard Stallman
2003-01-22 14:12 ` Stefan Monnier
2003-01-22 18:09 ` Eli Zaretskii
2003-01-23 11:38 ` Richard Stallman
2003-01-23 16:18 ` Stefan Monnier
2003-01-24 17:16 ` Richard Stallman
2003-01-23 17:48 ` Eli Zaretskii
2003-01-24 5:43 ` Richard Stallman
2003-01-26 1:30 ` Stefan Monnier
2003-01-27 2:31 ` Richard Stallman
2003-01-27 7:38 ` Kenichi Handa
2003-01-27 14:12 ` Stefan Monnier
2003-01-29 11:23 ` Kenichi Handa
2003-01-21 0:10 ` Kenichi Handa
2003-01-21 0:45 ` Stefan Monnier
2003-01-21 6:01 ` Eli Zaretskii
2003-01-21 6:43 ` Kenichi Handa
2003-01-21 8:04 ` Kenichi Handa
2003-01-21 15:02 ` Miles Bader
2003-01-21 17:44 ` Stefan Monnier
2003-01-22 10:00 ` Richard Stallman
2003-01-21 5:56 ` Eli Zaretskii
2003-01-21 6:38 ` Kenichi Handa
2003-01-22 10:00 ` Richard Stallman
2003-01-22 14:12 ` Stefan Monnier
2003-01-20 1:52 ` Emacs-diffs Digest, Vol 2, Issue 28 Kenichi Handa
2003-01-21 18:18 ` Richard Stallman
2003-01-28 0:32 ` Kenichi Handa
2003-01-28 12:35 ` Kim F. Storm
2003-02-10 8:15 ` set-process-filter-multibyte and etc Kenichi Handa
2003-02-10 14:57 ` Kim F. Storm
2003-02-11 0:15 ` Kenichi Handa
2003-02-20 1:27 ` Tak Ota
2003-02-20 1:56 ` Kenichi Handa
2003-02-20 2:44 ` Tak Ota
2003-03-03 18:59 ` Emacs-diffs Digest, Vol 2, Issue 28 Richard Stallman
2003-01-21 18:18 ` Richard Stallman
2003-01-27 12:20 ` Kenichi Handa
2003-01-29 0:05 ` Richard Stallman
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
List information: https://www.gnu.org/software/emacs/
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=200301210054.h0L0sST12789@rum.cs.yale.edu \
--to=monnier+gnu/emacs@rum.cs.yale.edu \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this public inbox
https://git.savannah.gnu.org/cgit/emacs.git
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).