Re: Need some bug/version info
Ralf Angeli <angeli(a)iwi.uni-sb.de> writes:
[Copying to the AUCTeX mailing list as well.]
* Stephen J. Turnbull (2005-02-02) writes:
>>>>>> "Ralf" == Ralf Angeli <dev.null(a)iwi.uni-sb.de>
writes:
>
> Ralf> The backtrace I posted is not related to font locking. It
> Ralf> seems to be a problem with shy groups in the regular
> Ralf> expressions.
>
> Most likely fixed in CVS, due out in 21.4.17 in a few days according
> to the release manager.
As we are about to release AUCTeX 11.55, we are in need of a
workaround for 21.4.16. David posted the following on the AUCTeX list
(string-match "\\(\\(\\(\\(\\(\\(\\(\\(\\(\\(\\(\\(\\(\\(\\(\\(.\
\\)\\)\\)\\)\\)\\)\\)\\)\\)\\)\\)\\)\\)\\)\\)\\)" "x")
but didn't consider it a real and bullet-proof solution.
To be more exact: it is not a workaround but a preliminary for not
working around. As such it is ugly. And I have not even taken a look
at the respective XEmacs code, so it is guesswork at best whether or
not this code avoids or just hides a problem.
As a last resort we could prevent the regexps triggering the
segfault from being applied in XEmacs.
If a workaround like the above is considered workable, it would be
interesting to know how often it is to be applied: once per session,
once after any save-match-data, once per process
sentinel... Presumably something like
(set-match-data (make-list 30 0))
would be more efficient, anyway.
--
David Kastrup, Kriemhildstr. 15, 44793 Bochum