critical quit Re: XEmacs 21.[45] + Oort Gnus 0.03 + Filladapt 2.12: Inf loop

[Ben Wing <ben@666.com>]

Paul Stodghill wrote:
> 
> Recipe for disaster:
> 
>     milhouse$ uname -a
>     CYGWIN_NT-5.0 MILHOUSE 1.3.1(0.38/3/2) 2001-04-24 20:01 i686 unknown
>     milhouse$ xemacs -vanilla
> 
>     M-: (setq load-path (cons "/path/for/oort-gnus/" load-path))
>     M-x load-library message
>     M-x message-mail
>     M-x filladapt-mode
>     (insert the following in the body of the message)
>     > this is some citation
>     > text that needs to be filled.
>     (now put the cursor on this text and press)
>     M-q
> 
> XEmacs enters an infinite loop which cannot be broken with C-g.
> 
> For the ding list: Oort v0.03 and filladapt don't work together under
> Cygwin XEmacs. This problem does not exist in 5.8.8.
> 
> For the xemacs-beta: It would be really nice if C-g broken out of the
> loop. I realize that this may not be possible, though.
> 
> Further details
> 
> o Cygwin 1.3.1, most recent version of everything
> o Oort Gnus v0.03
> o xemacs-21.4.3 and xemacs-21.5-b1, up-to-date with pre-release packages.
> 
> If there are any other details that you need, please let me know.

[1] i just reenabled BROKEN_SIGIO on cygwin and checked it in. [testing revealed
no lockups; last reported lockups were b21, which was ages ago.]
[2] "critical quit" C-Sh-g is supposed to break out of all loops, even those
where inhibit-quit is set; furthermore, it should give you an immediate
backtrace in all circumstances. [it's possible that someone broke this on unix. 
it was broken on windows until very recently.  can someone please verify whether
it works on unix?]
[3] if you can, please update to the latest xemacs 21.5 cvs on cygwin, and check
whether C-g works for you by typing (while t) in a scratch buffer, hitting C-j,
then C-g and/or C-Sh-g.

> ---
> Paul Stodghill <stodghil@cs.cornell.edu>
> Dept. of Computer Science, Upson Hall, Ithaca, NY  14853
> Phone: 607-254-8838   FAX: 607-255-4428
> http://www.cs.cornell.edu/stodghil/

-- 
ben

I'm sometimes slow in getting around to reading my mail, so if you
want to reach me faster, call 520-661-6661.

See http://www.666.com/ben/chronic-pain/ for the hell I've been
through.