Re: [elpa] externals/embark 09a7d69b01: eww-download-callback takes 2 args on 27.1 (fix #557)

[Stefan Monnier]

> +                  (if (= (car (func-arity #'eww-download-callback)) 3)
> +                      (list url dir)
> +                    (list url)))))

Hmm... `func-arity` will not give you the right answer when someone
installed an advice on `eww-download-callback`.  You're probably better
off checking `emacs-major-version` (or calling first with 2 args and if
it signals a `wrong-number-of-arguments` error then try again with 1 arg).


        Stefan