Re: Emacs design and architecture

[Po Lu]

Dmitry Gutov <dmitry@gutov.dev> writes:

> We do: just as others have noted, redisplay calls back into
> Lisp. Which allows us to implement jit-lock with language-specific
> logic written in Lisp.
>
> It has for a long time been the method by which we manage to do syntax
> highlighting with adequate performance even in large files.

Jit-Lock doesn't control the display process itself.  It's only a
facility which enables buffer text to be selectively modified _before_
it is actually displayed.