Have you tried hooking self-insert-command to the modes you'd use it on? Like prog mode and fundamental. The only corner case I can think of is if you'd like to

Have you tried hooking self-insert-command to the modes you'd use it on? Like prog mode and fundamental. The only corner case I can think of is if you'd like to tab-insert in org-mode and also expand headings using tab. Edit: Try this: (defun indent-for-tab-command () (interactive) (insert-char #x20 4))