Re: `font-lock-extend-region-functions' vs. `font-lock-extend-after-change-region-function'

["Tobias C. Rittweiler" <tcr@freebits.de>]

Stefan Monnier <monnier@iro.umontreal.ca> writes:

> > what is the difference between the variables
> >   `font-lock-extend-region-functions'
> > and
> >   `font-lock-extend-after-change-region-function' ?
> > In particular, how do they relate? Which should be used for what?
>
> Have you read the Elisp manual's discussion about font-locking
> multiline elements?

No, I somehow missed that section. Of course, it's all in there! (blush)


> The "right" answer is usually font-lock-extend-region-functions, but
> it's hard to tell without knowing anything more (sometimes it's
> difficult/impossible to write the necessary
> font-lock-extend-region-functions).
>
> > I face the following problem: Font-lock, perhaps just jit-lock (I'm
> > using that), calls `font-lock-fontify-region-function' with start and
> > end values pretty much arbitrary in the buffer.
>
> Yes, that's normal.  That's what font-lock-extend-region-functions is for.

Right, works like a charm now.

Thank you very much for your prompt answer!,

  -T.