Hi guys,
could you please take me off the cc for this discussion? Thanks.
- Carsten
>>>>> "LT" == Luc Teirlinck <[EMAIL PROTECTED]> writes:
LT> I still do not understand exactly what a nil argument for MODE in
LT> font-lock-{add,remove}-keywords is supposed to accomplish. The
LT> font-lock-add-keywords docstring contains the following mysterious
LT> sentence:
LT> When used from a Lisp program (such as a minor mode), it is recommended to
LT> use nil for mode (and place the call on a hook) to avoid subtle problems
LT> due to details of the implementation.
LT> Which subtle problems?
LT> It seems to me that a _global_ minor mode _should_ use a non-nil MODE
LT> argument when adding or removing a keyword. Do the "subtle problems"
LT> refer to problems that occur when trying to make
LT> font-lock-keywords-alist buffer local, as a buffer local minor mode
LT> might be tempted to do? A permanent buffer-local minor mode that
LT> wants to add the keyword independent of the mode could use
LT> after-change-major-mode-hook to add it. With my latest set of patches
LT> that will work for modes that run that hook. If the minor mode wants
LT> to add it for a particular mode and all its derived modes, it can,
LT> after my patches, add it to the mode hook, as long as the mode and its
LT> ancestor modes follow the new major mode conventions. Only adding it
LT> to a mode, but not to its derived modes, is problematic after my
LT> patches, as well as without them.
LT> Maybe one could have a font-lock-local-keywords-alist, that would be
LT> _in addition_ to font-lock-keywords-alist. That should be a
LT> non-permanent local and could be used by non-permanent buffer local minor
LT> modes. If one is not willing to rely on after-change-major-mode-hook,
LT> there could be a separate font-lock-permanent-local-keywords-alist,
LT> for permanent-local minor modes.
LT> All of this assuming that I am guessing the purpose of a nil argument
LT> correctly.
LT> Sincerely,
LT> Luc.
--
Carsten Dominik <[EMAIL PROTECTED]> \ _ /
Sterrenkundig Instituut "Anton Pannekoek" |X| _
Kruislaan 403; NL-1098 SJ Amsterdam /| |\ _ _ _/ \
phone +31 (20) 525-7477; FAX +31 (20) 525-7484 __|o|___/ ~~ \___/ ~~~
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