Hello.
I'd like to suggest the following improvement to the out-of-the-box
behaviour on apple-darwin, NS appkit :-
;;
;; Allow Command-Plus-or-Minus to text-scale fontsize.
;;
(global-set-key (kbd "s-+") #'text-scale-increase)
(global-set-key (kbd "s-=") #'text-scale-increase)
(global-set-key (kbd "s--") #'text-scale-decrease)
Van L
ⓔ van@scratch.space