From: Dmitry Antipov <dmantipov@yandex.ru>
To: Kenichi Handa <handa@m17n.org>
Cc: emacs-devel@gnu.org
Subject: Re: using empty_string as the only "" string
Date: Wed, 25 Apr 2007 17:22:38 +0400 [thread overview]
Message-ID: <462F561E.3030106@yandex.ru> (raw)
In-Reply-To: <E1Hgg6w-0002JV-Fl@etlken.m17n.org>
Kenichi Handa wrote:
> Unfortunately no. Currently Emacs behaves as this:
>
> (concat "" "\300") => "\300"
> (concat (string-to-multibyte "") "\300") => "À"
Hm. Is there any reason(s) to behave as you described ?
For example, if I want to make multibyte "ÀÈ", I would like to use
(string-to-multibyte (concat "\300" "\310")) => "\xc0\xc8" (why ?)
or
(concat (string-as-multibyte "\300") (string-as-multibyte "\310")) => "\xc0\xc8" (why ?)
instead of
(concat (string-to-multibyte "") "\300" "\310") => "ÀÈ",
similar to C:
int x, y;
float f;
...
f = (float)(x + y); // may overflow
or
f = (float)x + (float)y; // probably better
instead of strange
f = (float)0 + x + y;
> Of course, with more changes to alloc.c, we can keep unique
> multibyte empty string and unique unibyte empty string.
IMHO this is similar to have more than one Qnil or Qt - very
strange, indeed.
> But, is it really worth working on that ?
If you mean making two empty strings - obviously no.
Dmitry
next prev parent reply other threads:[~2007-04-25 13:22 UTC|newest]
Thread overview: 59+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-04-25 5:38 using empty_string as the only "" string dmantipov
2007-04-25 5:49 ` Miles Bader
2007-04-25 11:50 ` Juanma Barranquero
2007-04-25 11:56 ` Kenichi Handa
2007-04-25 13:22 ` Dmitry Antipov [this message]
2007-04-25 16:07 ` Stefan Monnier
2007-04-26 4:23 ` Richard Stallman
2007-04-26 13:03 ` Dmitry Antipov
2007-04-27 6:00 ` Richard Stallman
2007-04-27 10:04 ` Dmitry Antipov
2007-04-27 10:29 ` David Kastrup
2007-04-28 4:06 ` Richard Stallman
2007-04-28 8:54 ` Dmitry Antipov
2007-04-28 18:35 ` Richard Stallman
2007-06-05 15:43 ` Juanma Barranquero
2007-06-05 19:17 ` Richard Stallman
2007-06-05 19:45 ` Juanma Barranquero
2007-06-06 1:17 ` Stefan Monnier
2007-06-06 11:04 ` Juanma Barranquero
2007-06-06 22:09 ` Richard Stallman
2007-06-08 15:49 ` Juanma Barranquero
2007-06-08 19:16 ` Stefan Monnier
-- strict thread matches above, loose matches on Subject: below --
2007-04-24 16:32 Using " Dmitry Antipov
2007-04-24 17:05 ` Juanma Barranquero
2007-04-24 18:11 ` Andreas Schwab
2007-04-24 18:50 ` Juanma Barranquero
2007-04-24 21:38 ` Andreas Schwab
2007-04-24 21:54 ` Juanma Barranquero
2007-04-24 22:11 ` Andreas Schwab
2007-04-24 22:54 ` Juanma Barranquero
2007-04-24 21:57 ` David Kastrup
2007-04-24 22:07 ` Lennart Borgman (gmail)
2007-04-24 22:29 ` David Kastrup
2007-04-24 22:35 ` Andreas Schwab
2007-04-25 0:55 ` Kenichi Handa
2007-04-25 9:51 ` Andreas Schwab
2007-04-25 9:58 ` David Kastrup
2007-04-25 10:50 ` Andreas Schwab
2007-04-24 22:40 ` Lennart Borgman (gmail)
2007-04-24 22:12 ` Andreas Schwab
2007-04-24 22:31 ` David Kastrup
2007-04-24 22:56 ` Andreas Schwab
2007-04-24 21:39 ` Miles Bader
2007-04-24 21:45 ` Juanma Barranquero
2007-04-24 22:11 ` Miles Bader
2007-04-24 22:59 ` Juanma Barranquero
2007-04-24 23:37 ` Miles Bader
2007-04-24 23:44 ` Johan Bockgård
2007-04-25 1:47 ` Miles Bader
2007-04-25 14:52 ` Richard Stallman
2007-04-26 15:03 ` Daniel Brockman
2007-04-27 20:40 ` Richard Stallman
2007-04-25 2:05 ` Richard Stallman
2007-04-25 12:00 ` Juanma Barranquero
2007-04-25 2:05 ` Richard Stallman
2007-04-24 17:48 ` Stefan Monnier
2007-04-25 2:05 ` Richard Stallman
2007-04-26 14:24 ` Dmitry Antipov
2007-04-25 2:05 ` Richard Stallman
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