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Re: unibyte<->multibyte conversion [Re: Emacs-diffs Digest, Vol 2, Issue
From: |
Stefan Monnier |
Subject: |
Re: unibyte<->multibyte conversion [Re: Emacs-diffs Digest, Vol 2, Issue 28] |
Date: |
Mon, 20 Jan 2003 19:54:28 -0500 |
> > 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
- Re: Emacs-diffs Digest, Vol 2, Issue 28, Richard Stallman, 2003/01/17
- Re: Emacs-diffs Digest, Vol 2, Issue 28, Kim F. Storm, 2003/01/18
- Re: Emacs-diffs Digest, Vol 2, Issue 28, Eli Zaretskii, 2003/01/18
- Re: Emacs-diffs Digest, Vol 2, Issue 28, Richard Stallman, 2003/01/19
- unibyte<->multibyte conversion [Re: Emacs-diffs Digest, Vol 2, Issue 28], Kenichi Handa, 2003/01/19
- Re: unibyte<->multibyte conversion [Re: Emacs-diffs Digest, Vol 2, Issue 28], Eli Zaretskii, 2003/01/20
- Re: unibyte<->multibyte conversion [Re: Emacs-diffs Digest, Vol 2, Issue 28], Stefan Monnier, 2003/01/20
- Re: unibyte<->multibyte conversion [Re: Emacs-diffs Digest, Vol 2, Issue 28], Kenichi Handa, 2003/01/20
- Re: unibyte<->multibyte conversion [Re: Emacs-diffs Digest, Vol 2, Issue 28],
Stefan Monnier <=
- Re: unibyte<->multibyte conversion [Re: Emacs-diffs Digest, Vol 2, Issue 28], Eli Zaretskii, 2003/01/21
- Re: unibyte<->multibyte conversion [Re: Emacs-diffs Digest, Vol 2, Issue 28], Richard Stallman, 2003/01/22
- Re: unibyte<->multibyte conversion [Re: Emacs-diffs Digest, Vol 2, Issue 28], Stefan Monnier, 2003/01/22
- Re: unibyte<->multibyte conversion [Re: Emacs-diffs Digest, Vol 2, Issue 28], Eli Zaretskii, 2003/01/22
- Re: unibyte<->multibyte conversion [Re: Emacs-diffs Digest, Vol 2, Issue 28], Richard Stallman, 2003/01/23
- Re: unibyte<->multibyte conversion [Re: Emacs-diffs Digest, Vol 2, Issue 28], Stefan Monnier, 2003/01/23
- Re: unibyte<->multibyte conversion [Re: Emacs-diffs Digest, Vol 2, Issue 28], Richard Stallman, 2003/01/24
- Re: unibyte<->multibyte conversion [Re: Emacs-diffs Digest, Vol 2, Issue 28], Eli Zaretskii, 2003/01/23
- Re: unibyte<->multibyte conversion [Re: Emacs-diffs Digest, Vol 2, Issue 28], Richard Stallman, 2003/01/24
- Re: unibyte<->multibyte conversion [Re: Emacs-diffs Digest, Vol 2, Issue 28], Stefan Monnier, 2003/01/25