I've been using this workaround so far, and it seems to work (like the
first option, though):

(define-advice show-paren-function (:around (fn) fix)
  "Highlight enclosing parens."
  (cond ((looking-at-p "\\s(") (funcall fn))
        (t (save-excursion
             (ignore-errors (backward-up-list))
             (funcall fn)))))

source
<https://stackoverflow.com/questions/34846531/show-parentheses-when-inside-them-emacs>

I don't know about efficiency, but I haven't tried it in deeply nested
blocks.

On Mon, May 2, 2022 at 5:04 AM Lars Ingebrigtsen <larsi@gnus.org> wrote:

> José Júnior <jjnilton@gmail.com> writes:
>
> > I didn't know how to answer, so I looked how other editors do. I found
> two behaviors:
> >
> > 1. Unless the point is right by the parens, it should highlight the
> curly braces. So in
> > this case it would highlight the curly braces.
> >
> > With the point in these places would highlight the parens, otherwise
> would highlight
> > the curly braces:
> >
> > {|(|foobar}|)|
> >
> > 2. Ignore and don't highlight anything.
>
> I guess 2) seems more consistent, but I don't have much of an opinion.
> Choosing one or the other of the parentheses seems a bit arbitrary.
>
> --
> (domestic pets only, the antidote for overdose, milk.)
>    bloggy blog: http://lars.ingebrigtsen.no
>