Hey,

I have a minor mode. If that mode is active and the user hits DEL, I want to do some action, but only if some condition holds. If the condition holds and the action is executed I want to do nothing more after that. But if the condition fails, I don't want to do anything and let the default DEL action execute.

Not sure how I could solve this. But I guess I could do it in two ways:

1) I could rebind the DEL key to a function in the minor mode and then check if the conditions holds ot not. But then how do I know what the default command to DEL is?

2) I could add a pre command hook like this. Execute the command and then break the chain. But how do I break the chain?

(add-hook 'pre-command-hook
          (lambda()
            (when (equal last-input-event 'backspace)
              ;; Do something and then stop (do not execute the
              ;; command that backspace is bound to)
              )))

In what way would you solve it? Thanks!