I recently mapped my Ctrl key to my Caps Lock key to make using emacs easier. Most of the time it is awesome but one unintended consequence is that C-/ is a frequent typo when I am going for the ? (i.e., SHIFT+/). When this happens I lose text and I can't undo it with C-z but I am not sure exactly what is happening.

What is C-/ doing?


Ctrl+/ runs the command undo. (unless it's been remapped)

You can always find out what a command does by asking emacs.

Ctrl+h k runs the describe-key function.
You type the above , enter a key sequence, and Emacs tells you what it does.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.