* Checking for safe font-lock keywords and hi-lock mode.
@ 2007-04-19 15:42 David Koppelman
0 siblings, 0 replies; only message in thread
From: David Koppelman @ 2007-04-19 15:42 UTC (permalink / raw)
To: emacs-devel
Is there any way to check whether font-lock keywords are safe? For
example, such a function might be named font-lock-pattern-safe and
used in the code below, where patterns might contain malicious code:
(font-lock-add-keywords nil
(apply 'append
(mapcar
(lambda (p) (if (font-lock-pattern-safe-p p) (list p) nil))
patterns))) )
A return of true would mean safe, nil would mean maybe dangerous.
My immediate concern is hi-lock and I would use such a function in
hi-lock-find-patterns. (This automatically grabs font lock patterns
from a file.) If no such function is available right now then
hi-lock-find-patterns should be off by default and if on should ask. I
can have a patch ready by Friday either safe checking (if possible) or
else using some mixture of configuration setting, user input and
whitelisting.
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2007-04-19 15:42 Checking for safe font-lock keywords and hi-lock mode David Koppelman
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