Does Emacs allow it to implement POSIX signal handling in Lisp?
Specifically, I would like to handle SIGTERM to finish desktop-mode related things.
2
-
1As far as I know the answer is "no", but you could try DBus signals: gnu.org/software/emacs/manual/html_node/dbus/Signals.html if that's a feasible option.– wvxvwMar 1, 2015 at 12:40
-
It indeed looks like a feasible option. Thanks for pointing it out.– Andreas SteffanMar 3, 2015 at 14:30
Add a comment
|
1 Answer
There's special-event-map which can be used to handle signals among other things, you can bind a key like [sigusr2] there to a function you'd like to be executed on the respective signal. I'm not so sure whether it works on anything else than SIGUSR1 and SIGUSR2 though.
edit: Here's an useful example of how one could use it:
(defun my-quit-emacs-unconditionally ()
(interactive)
(save-some-buffers t t)
(kill-emacs))
(define-key special-event-map (kbd "<sigusr1>") 'my-quit-emacs-unconditionally)
