> In `font-lock-default-fontify-region', immediately before the comment
> ;; check to see if we should expand the beg/end area for
> ;; proper multiline matches
> insert either
> (setq beg (line-beginning-position (1- font-lock-lines-before)))
Oh, I see we violently agree. I've committed the change.
> or - but this would have to be mentioned in the doc-string of
> `font-lock-lines-before' -
> (when font-lock-multiline
> (setq beg (line-beginning-position (1- font-lock-lines-before))))
I'd rather not force people to use font-lock-multiline at the same time as
font-lock-lines-before since they interact in non-trivial ways.
I'd actually rather recommend to avoid using the two together.
> remove the corresponding line from `font-lock-after-change-function' and
> wait what happens? I'm still sceptical, though ... fontifications would
> always overlap by `font-lock-lines-before' lines.
The default setting of font-lock-lines-before makes it a nop (as it
should). Major modes which rely on it should set it to the
appropriate value.
Stefan
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