Re: Optimizing performance of buffer markers

[Eli Zaretskii]

> From: Stefan Monnier <monnier@iro.umontreal.ca>
> Cc: yantar92@gmail.com,  casouri@gmail.com,  emacs-devel@gnu.org
> Date: Sat, 25 Jun 2022 05:07:59 -0400
> 
> > Landing that branch is indeed a very Good Thing, but AFAIU this
> > discussion revealed that Org adds quite a few markers of its own when
> > it parses the buffer, because it wants to track the positions of some
> > syntactic elements of the buffer.
> 
> That's quite unusual, tho, and I suspect that Org's code could be
> changed to use overlays instead (after all, we could define an
> "efficient marker" as (make-overlay POS POS)).

If that is going to be our advice, it would make sense to reimplement
markers as a kind of overlays, so that Lisp programs shouldn't bother
with this trick.