From: Kenichi Handa <handa@m17n.org>
To: Chong Yidong <cyd@stupidchicken.com>
Cc: intrigeri@boum.org, 103@emacsbugs.donarmstrong.com, emacs-devel@gnu.org
Subject: Re: 23.0.60; Segmentation fault loading auto-lang.el
Date: Tue, 08 Apr 2008 15:52:27 +0900 [thread overview]
Message-ID: <E1Jj7gx-00039V-Vp@etlken.m17n.org> (raw)
In-Reply-To: <87r6dg3oe2.fsf@stupidchicken.com> (message from Chong Yidong on Tue, 08 Apr 2008 01:29:41 -0400)
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In article <87r6dg3oe2.fsf@stupidchicken.com>, Chong Yidong <cyd@stupidchicken.com> writes:
> > - download http://www.marquardt-home.de/auto-lang.el to ~/.elisp/
> > - run emacs -Q
> > - M-x load-file
> > - choose file ~/.elisp/auto-lang.el
> > => Emacs segfaults (same result with emacs -Q -nw)
> This is due to an infinite nesting depth in regexp-opt, which can be
> tracked down to the following problem:
> (let ((str (string-as-unibyte "^[$(D+#^[(B")))
> (string-match (char-to-string (string-to-char str)) str))
> evaluates to 0 in Emacs 22, and to nil in Emacs 23. It turns out that
> this screws up the use of all-completions in regexp-opt-group.
> Anyone have any idea what's going on here?
(string-as-unibyte "^[$(D+#^[(B") => "\303\244"
(string-to-char "\303\244") => 195 (because ?\303 == 195)
(char-to-string 195) => "^[$(D**^[(B" (because 195==0xC3 U+00C3=='^[$(D**^[(B')
(string-match "^[$(D**^[(B" "^[$(D+#^[(B") => nil (obvious)
Any Lisp program that depends on the result of
string-as-unibyte (thus Emacs' internal character
representation) won't work in Emacs 23.
---
Kenichi Handa
handa@ni.aist.go.jp
next prev parent reply other threads:[~2008-04-08 6:52 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-04-08 5:29 23.0.60; Segmentation fault loading auto-lang.el Chong Yidong
2008-04-08 6:52 ` Kenichi Handa [this message]
2008-04-08 16:50 ` Chong Yidong
2008-04-09 1:42 ` Stefan Monnier
2008-04-09 2:19 ` Kenichi Handa
-- strict thread matches above, loose matches on Subject: below --
2008-03-30 18:38 intrigeri
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