> I just caught Emacs hogging the CPU with endless
> redisplay/fontification. The following code triggers it for me:
> --8<---------------cut here---------------start------------->8---
> (progn
> (switch-to-buffer "*fontification loop*")
> (emacs-lisp-mode)
> (while (< (point) (floor (* (sqrt 2) jit-lock-chunk-size)))
> (insert "\nfoo\nbar\nbaz"))
> (put-text-property (- (point-max) 5) (point-max) 'invisible t))
> --8<---------------cut here---------------end--------------->8---
> If emacs crashed, and you have the emacs process in the gdb debugger,
> please include the output from the following gdb commands:
> `bt full' and `xbacktrace'.
> If you would like to further debug the crash, please read the file
> /home/andreas/ext/emacs/etc/DEBUG for instructions.
I can't reproduce it here. Does the patch below help?
Stefan
--- jit-lock.el 14 sep 2006 11:00:11 -0400 1.56
+++ jit-lock.el 25 sep 2006 10:54:29 -0400
@@ -407,7 +407,8 @@
"Fontify in buffer BUF from START to END."
(with-current-buffer buf
(with-buffer-prepared-for-jit-lock
- (put-text-property start end 'fontified t))))
+ (when (setq end (text-property-not-all start end 'fontified nil))
+ (put-text-property start end 'fontified nil)))))
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