On Tue, 25 Aug 2020 16:28:15 -0600 Jerry James wrote:
** set-default-font has been renamed to set-frame-font
My emacs claims set-default-font is an alias defined in frame.el (for set-frame-font).
And the way to make a font be the default in all frames seems to be modifying the initial-frame-alist and default-frame-alist variables.