From: Eli Zaretskii <eliz@gnu.org>
To: Alan Mackenzie <acm@muc.de>
Cc: dak@gnu.org, emacs-devel@gnu.org
Subject: Re: Fwd: Re: Inadequate documentation of silly characters on screen.
Date: Thu, 19 Nov 2009 21:52:20 +0200 [thread overview]
Message-ID: <834ooqqoln.fsf@gnu.org> (raw)
In-Reply-To: <20091119180848.GE1314@muc.de>
> Date: Thu, 19 Nov 2009 18:08:48 +0000
> From: Alan Mackenzie <acm@muc.de>
> Cc: emacs-devel@gnu.org
>
> No, you (all of you) are missing the point. That point is that if an
> Emacs Lisp hacker writes "?ñ", it should work, regardless of
> what "codepoint" it has, what "bytes" represent it, whether those
> "bytes" are coded with a different codepoint, or what have you.
No can do, as long as we support both unibyte and multibyte buffers
and strings.
> OK. Surely displaying it as "\361" is a bug?
It's no more a bug than this:
M-: ?a RET => 97
If `a' can be represented as 97, then why cannot \361 be represented
as 4194289?
> So, how did the character "ñ" get turned into the illegal byte #xf1?
It did so because you used aset to put it into a unibyte string.
> Are you saying that Emacs is converting "?ñ" and "?ä" into the wrong
> integers?
Emacs can convert it into 2 distinct integer representations. It
decides which one by the context. And you just happened to give it
the wrong context.
> What is the correct Emacs internal representation for "ñ" and "ä"?
That depends on whether they will be put into a multibyte
string/buffer or a unibyte one.
> > Because Emacs has no separate "character" data type.
>
> For which I am thankful.
Then please understand that there's no bug here.
next prev parent reply other threads:[~2009-11-19 19:52 UTC|newest]
Thread overview: 96+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-18 19:12 [acm@muc.de: Re: Inadequate documentation of silly characters on screen.] Alan Mackenzie
2009-11-19 1:27 ` Fwd: Re: Inadequate documentation of silly characters on screen Stefan Monnier
2009-11-19 8:20 ` Alan Mackenzie
2009-11-19 8:50 ` Miles Bader
2009-11-19 10:16 ` Fwd: " Andreas Schwab
2009-11-19 12:21 ` Alan Mackenzie
2009-11-19 13:21 ` Jason Rumney
2009-11-19 13:35 ` Stefan Monnier
2009-11-19 14:18 ` Alan Mackenzie
2009-11-19 14:58 ` Jason Rumney
2009-11-19 15:42 ` Alan Mackenzie
2009-11-19 19:39 ` Eli Zaretskii
2009-11-19 15:30 ` Stefan Monnier
2009-11-19 15:58 ` Alan Mackenzie
2009-11-19 16:06 ` Andreas Schwab
2009-11-19 16:47 ` Aidan Kehoe
2009-11-19 17:29 ` Alan Mackenzie
2009-11-19 18:21 ` Aidan Kehoe
2009-11-20 2:43 ` Stephen J. Turnbull
2009-11-19 19:45 ` Eli Zaretskii
2009-11-19 20:07 ` Eli Zaretskii
2009-11-19 19:55 ` Stefan Monnier
2009-11-20 3:13 ` Stephen J. Turnbull
2009-11-19 16:55 ` David Kastrup
2009-11-19 18:08 ` Alan Mackenzie
2009-11-19 19:25 ` Davis Herring
2009-11-19 21:25 ` Alan Mackenzie
2009-11-19 22:31 ` David Kastrup
2009-11-21 22:52 ` Richard Stallman
2009-11-23 2:08 ` Displaying bytes (was: Inadequate documentation of silly characters on screen.) Stefan Monnier
2009-11-23 20:38 ` Richard Stallman
2009-11-23 21:34 ` Per Starbäck
2009-11-24 22:47 ` Richard Stallman
2009-11-25 1:33 ` Kenichi Handa
2009-11-25 2:29 ` Displaying bytes (was: Inadequate documentation of silly Stefan Monnier
2009-11-25 2:50 ` Lennart Borgman
2009-11-25 6:25 ` Stephen J. Turnbull
2009-11-25 5:40 ` Displaying bytes (was: Inadequate documentation of silly characters on screen.) Ulrich Mueller
2009-11-26 22:59 ` Displaying bytes Reiner Steib
2009-11-27 0:16 ` Ulrich Mueller
2009-11-27 1:41 ` Stefan Monnier
2009-11-27 4:14 ` Stephen J. Turnbull
2009-11-25 5:59 ` Displaying bytes (was: Inadequate documentation of silly characters on screen.) Stephen J. Turnbull
2009-11-25 8:16 ` Kenichi Handa
2009-11-29 16:01 ` Richard Stallman
2009-11-29 16:31 ` Displaying bytes (was: Inadequate documentation of silly Stefan Monnier
2009-11-29 22:01 ` Juri Linkov
2009-11-30 6:05 ` tomas
2009-11-30 12:09 ` Andreas Schwab
2009-11-30 12:39 ` tomas
2009-11-29 22:19 ` Displaying bytes (was: Inadequate documentation of silly characters on screen.) Kim F. Storm
2009-11-30 1:42 ` Stephen J. Turnbull
2009-11-24 1:28 ` Displaying bytes Stefan Monnier
2009-11-24 22:47 ` Richard Stallman
2009-11-25 2:18 ` Stefan Monnier
2009-11-26 6:24 ` Richard Stallman
2009-11-26 8:59 ` David Kastrup
2009-11-26 14:57 ` Stefan Monnier
2009-11-26 16:28 ` Lennart Borgman
2009-11-27 6:36 ` Richard Stallman
2009-11-24 22:47 ` Richard Stallman
2009-11-20 8:48 ` Fwd: Re: Inadequate documentation of silly characters on screen Eli Zaretskii
2009-11-19 19:52 ` Eli Zaretskii [this message]
2009-11-19 20:53 ` Alan Mackenzie
2009-11-19 22:16 ` David Kastrup
2009-11-20 8:55 ` Eli Zaretskii
2009-11-19 20:05 ` Stefan Monnier
2009-11-19 21:27 ` Alan Mackenzie
2009-11-19 19:43 ` Eli Zaretskii
2009-11-19 21:57 ` Alan Mackenzie
2009-11-19 23:10 ` Stefan Monnier
2009-11-19 20:02 ` Stefan Monnier
2009-11-19 14:08 ` Stefan Monnier
2009-11-19 14:50 ` Jason Rumney
2009-11-19 15:27 ` Stefan Monnier
2009-11-19 23:12 ` Miles Bader
2009-11-20 2:16 ` Stefan Monnier
2009-11-20 3:37 ` Stephen J. Turnbull
2009-11-20 4:30 ` Stefan Monnier
2009-11-20 7:18 ` Stephen J. Turnbull
2009-11-20 14:16 ` Stefan Monnier
2009-11-21 4:13 ` Stephen J. Turnbull
2009-11-21 5:24 ` Stefan Monnier
2009-11-21 6:42 ` Stephen J. Turnbull
2009-11-21 6:49 ` Stefan Monnier
2009-11-21 7:27 ` Stephen J. Turnbull
2009-11-23 1:58 ` Stefan Monnier
2009-11-21 12:33 ` David Kastrup
2009-11-21 13:55 ` Stephen J. Turnbull
2009-11-21 14:36 ` David Kastrup
2009-11-21 17:53 ` Stephen J. Turnbull
2009-11-21 23:30 ` David Kastrup
2009-11-22 1:27 ` Sebastian Rose
2009-11-22 8:06 ` David Kastrup
2009-11-22 23:52 ` Sebastian Rose
2009-11-19 17:08 ` Fwd: " Alan Mackenzie
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