When you want to do something, you get sometimes a confirmation prompt in the minibuffer, with pressing yes or no to proceed.
I'm aware that you could change this with typing y instead
yes with the following setting.
(fset 'yes-or-no-p 'y-or-n-p) ;; Ask for y/n instead of yes/no
I'm wondering if you could configure this in a way that he will accept RET as