Re: Emacs 30.0 warning from `cl-pushnew' and `memql'

[Stefan Monnier]

> (let ((lst '()))
>   (cl-pushnew "a" lst)
>   (cl-pushnew "a" lst)
>   lst) ; ("a" "a")

It may sometimes return ("a" "a") but it may also return ("a").
Case in point, I think it will do the first when interpreted and the
second when compiled.


        Stefan