Re: cc-mode fontification feels random

[Stefan Monnier]

Eli Zaretskii [2021-06-12 17:20:36] wrote:

>> From: Stefan Monnier <monnier@iro.umontreal.ca>
>> Cc: Ergus <spacibba@aol.com>,  ofv@wanadoo.es,  emacs-devel@gnu.org
>> Date: Sat, 12 Jun 2021 10:00:26 -0400
>> 
>> > The other design issue with TS integration is that I'd like it to plug
>> > into the JIT font-lock interface of the display engine, so that we
>> > don't unnecessarily fontify parts of the buffer that won't be
>> > displayed, and always do fontify the parts that will be.
>> 
>> Hm... AFAIK that's already what emacs-tree-sitter does.
>
> Can you point me to the code which does that?

The code is in `tree-sitter-hl.el`, where they define
`tree-sitter-hl-mode` which is enabled by `tree-sitter-hl--setup`
where they

    (add-function :override (local 'font-lock-fontify-region-function)
                  #'tree-sitter-hl--highlight-region)


-- Stefan