Re: font-lock-add-keywords in hi-lock.el

[Juri Linkov]

> font-lock-keywords in the affected Gnus buffers is (t nil).
>
> [...]
>
> Is that enough information to find the culprit, or is there a watch I
> can put on the global value of font-lock-keywords which will print a
> stacktrace or enter the debugger when it is changed?

I think this information is enough to find the culprit.  The function
`font-lock-fontify-keywords-region' is the only remaining function in
font-lock.el that compiles font-lock-keywords without calling
`(font-lock-set-defaults)' first.

Before fixing it, it would be useful to know how it gets called.
In the buffer list you sent earlier there is the *Occur* buffer.
Do you remember on what buffer you called `occur'?  Very likely
`occur' forced fontification on a non-font-lock buffer.

However, I can't reproduce this bug with `emacs -Q'.  Do you have a
special font-lock configuration in .emacs, like calling
`(font-lock-turn-on-thing-lock)' directly on non-font-lock buffers
or something like that?

-- 
Juri Linkov
http://www.jurta.org/emacs/