Re: Font-lock in COMINT modes

[Stefan Monnier]

> I haven't understood how a purely nil font-lock-defaults implicitly
> prevents string+comment fontification independent of the keywords-only
> setting, but it does.

Because if it's nil font-lock-mode-internal is not activated at all.
AFAIK nil and (nil t) are equivalent (i.e. don't highlight anything), except
that (nil t) takes a lot more CPU to do nothing (it runs all the
font-lock-foo-function hooks, enables jit-lock so as to do nothing
just-in-time rather than eagerly, checks where nothing needs to be done,
rounds up to a whole number of lines the region upon which inaction is
requested, checks if there's a multiline entity and extends the region even
more, so that nothing is done in a multiline awaer way, ...).


        Stefan