I've just added a nice custom key binding:
;; Open files in dired mode using 'open' (eval-after-load "dired" '(progn (define-key dired-mode-map (kbd "z") (lambda () (interactive) (let ((fn (dired-get-file-for-visit))) (start-process "default-app" nil "open" fn))))))
dired, I look at
C-h b (show all key bindings) but this new custom binding on the "z" key is shown as bound to
?? in the listing.
So, my question is, how can one add a bit of documentation to a custom key binding, which will be displayed in the "show all key bindings" list?
Perhaps does one have to give the function a global name?