* gnus bug when editing?
@ 1998-07-21 18:09 Stefan Waldherr
1998-07-22 8:46 ` XEmacs bug? [was Re: gnus bug when editing?] Jan Vroonhof
0 siblings, 1 reply; 2+ messages in thread
From: Stefan Waldherr @ 1998-07-21 18:09 UTC (permalink / raw)
Hi,
I recently observed the following bug: select an article, hit `e' to edit,
edit something, then `C c' to finish. Selecting another article yields
(85) (warning/warning) Error caught in `font-lock-pre-idle-hook'
in the message line. Debug output is
Signaling: (wrong-type-argument extent-live-p #<destroyed extent>)
extent-start-position(#<destroyed extent>)
font-lock-after-change-function(1 1 2111)
erase-buffer()
gnus-request-article-this-buffer(91 "nnml:timm")
gnus-article-prepare(91 nil)
gnus-summary-display-article(91 nil)
gnus-summary-select-article(nil nil pseudo)
gnus-summary-scroll-up(1)
call-interactively(gnus-summary-scroll-up)
Anyone?
Thanks,
Stefan.
--
Stefan Waldherr fax +49 431 8058 136
e-Mail swa@cs.cmu.edu
www http://www.waldherr.org/
^ permalink raw reply [flat|nested] 2+ messages in thread
* XEmacs bug? [was Re: gnus bug when editing?]
1998-07-21 18:09 gnus bug when editing? Stefan Waldherr
@ 1998-07-22 8:46 ` Jan Vroonhof
0 siblings, 0 replies; 2+ messages in thread
From: Jan Vroonhof @ 1998-07-22 8:46 UTC (permalink / raw)
Cc: xemacs-patches
Stefan Waldherr <swa@cs.cmu.edu> writes:
> I recently observed the following bug: select an article, hit `e' to edit,
> edit something, then `C c' to finish. Selecting another article yields
>
> (85) (warning/warning) Error caught in `font-lock-pre-idle-hook'
I cannot reproduce this with 21.x, but I think I can see what the problem is.
> Signaling: (wrong-type-argument extent-live-p #<destroyed extent>)
> extent-start-position(#<destroyed extent>)
> font-lock-after-change-function(1 1 2111)
It is a bug in the XEmacs font-lock-pre-idle-hook, does this "obviously
correct" patch help:
1998-07-22 Jan Vroonhof <vroonhof@math.ethz.ch>
* font-lock.el (font-lock-fontify-glumped-region): Add guard
aginst destroyed extents
Index: font-lock.el
===================================================================
RCS file: /usr/CVSroot/XEmacs/xemacs-20/lisp/font-lock.el,v
retrieving revision 1.7
diff -u -u -r1.7 font-lock.el
--- font-lock.el 1998/06/20 00:58:20 1.7
+++ font-lock.el 1998/07/22 16:29:22
@@ -1073,8 +1073,9 @@
;; region as fontified; otherwise, the same error might get signaled
;; after every command.
(unwind-protect
- ;; buffer may be deleted.
- (if (buffer-live-p (extent-object font-lock-old-extent))
+ ;; buffer/extent may be deleted.
+ (if (and (extent-live-p font-lock-old-extent)
+ (buffer-live-p (extent-object font-lock-old-extent)))
(save-excursion
(set-buffer (extent-object font-lock-old-extent))
(font-lock-after-change-function-1
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