[Daniel Burrows <[e-mail]>] Bug#292884: auctex spins forever with font-lock enabled

[Davide G. M. Salvetti]

tags 292884 + moreinfo unreproducible upstream
thanks
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Hi developers,

this is a bug reported via the Debian bug tracking system. I cannot
reproduce it on my system.

Does anybody have any clue about it?

[Reiner Steib]

A couple days ago, I was editing a large file when emacs went into what
appeared to be an infinite loop -- no display updates and it was eating 100%
of CPU. I killed it and re-opened the file, only to have it hang again.
After a little experimentation, I determined that the following was
happening: if font-lock-mode is enabled, and some other unknown circumstance
holds, auctex goes nuts when I finish typing a tag. For instance, I could
\en
but when I type the "d", auctex hangs. If I let it run long enough, an
autosave file is generated in which the "d" is present, and auctex can load
and fontify it with no problems.

It might be a bug in font-latex or in Emacs 21.3. Did Emacs react on
C-g (keyboard-quit)? If you can reproduce it, you should use `M-x
toggle-debug-on-quit RET' and post the backtrace.

Bye, Reiner.