Gustavo Barros <gusbrs.2016@gmail.com> writes:

> Hi All,
>
> I'm testing here the new pretest for Emacs 29, and I noticed a small
> problem in the type specification of the `org-latex-packages-alist'
> defcustom.
>
> The docstring states that each element of the alist is composed of up
> to four elements, but the type specification comprises just the first
> three.

Does this work in your `setopt' expression?