From: Kenichi Handa <handa@m17n.org>
Cc: monnier@iro.umontreal.ca, emacs@whaite.ca, emacs-devel@gnu.org
Subject: Re: printing most-negative-fixnum fails
Date: Tue, 11 May 2004 13:26:18 +0900 (JST) [thread overview]
Message-ID: <200405110426.NAA06558@etlken.m17n.org> (raw)
In-Reply-To: <200405110311.i4B3Bse22315@raven.dms.auburn.edu> (message from Luc Teirlinck on Mon, 10 May 2004 22:11:54 -0500 (CDT))
In article <200405110311.i4B3Bse22315@raven.dms.auburn.edu>, Luc Teirlinck <teirllm@dms.auburn.edu> writes:
> Stefan Monnier wrote:
> I can't reproduce your problem: I did
>> emacs -q --no-site-file
> most-negative-fixnum
> C-x C-e
> and it returned "-268435456 = ?\C-@". The right hand side of the return
> value is indeed incorrect (that's a bug), but it's still not the problem
> you're experiencing.
> Could you give a recipe to reproduce your problem?
> I can reproduce the problem. I do exactly what you did above and get:
I can reproduce it simply by:
(prin1-char most-negative-fixnum)
The reason of this bug is that prin1-char checks if the arg
CHAR is a valid character or not by:
(char-valid-p (event-basic-type char))
and
(event-basic-type most-negative-fixnum)
returns 64.
But I'm not sure at which level to fix it. I at first
thought this will work:
(char-valid-p (and (eventp char) (event-basic-type char)))
But eventp returns non-nil for any integer. Isn't it a bug?
Perhaps, eventp should be changed to something like this:
(defsubst eventp (obj)
"True if the argument is an event object."
(or (and (integerp obj)
(char-valid-p
(logand obj (lognot (logior ?\M-\^@ ?\C-\^@ ?\S-\^@
?\H-\^@ ?\s-\^@ ?\A-\^@)))))
(and (symbolp obj)
(get obj 'event-symbol-elements))
(and (consp obj)
(symbolp (car obj))
(get (car obj) 'event-symbol-elements))))
---
Ken'ichi HANDA
handa@m17n.org
prev parent reply other threads:[~2004-05-11 4:26 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-05-06 20:08 printing most-negative-fixnum fails Peter Whaite
2004-05-11 0:17 ` Juri Linkov
2004-05-11 3:20 ` Stefan Monnier
2004-05-11 16:57 ` Juri Linkov
2004-05-12 19:41 ` Richard Stallman
2004-05-11 12:23 ` Richard Stallman
2004-05-11 16:47 ` Juri Linkov
2004-05-14 9:20 ` Richard Stallman
2004-05-14 11:46 ` Kenichi Handa
2004-05-15 8:17 ` Juri Linkov
2004-05-15 8:53 ` Richard Stallman
2004-05-15 9:19 ` David Kastrup
2004-05-15 20:03 ` Juri Linkov
2004-05-18 13:03 ` Kenichi Handa
2004-05-19 8:36 ` Juri Linkov
2004-05-15 8:09 ` Juri Linkov
2004-05-15 18:34 ` Richard Stallman
2004-05-15 19:32 ` Juri Linkov
2004-05-12 1:41 ` Kenichi Handa
2004-05-12 2:06 ` Stefan Monnier
2004-05-12 4:43 ` Kenichi Handa
2004-05-11 2:48 ` Stefan Monnier
2004-05-11 3:11 ` Luc Teirlinck
2004-05-11 4:26 ` Kenichi Handa [this message]
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