When Emacs exits, it terminates all its subprocesses. For subprocesses that run a program, it sends them the
SIGHUP signal; connections are simply closed. Because subprocesses may be doing valuable work, Emacs normally asks the user to confirm that it is ok to terminate them. Each process has a query flag, which, if non-
nil, says that Emacs should ask for confirmation before exiting and thus killing that process. The default for the query flag is
t, meaning do query.
function process-query-on-exit-flag process
This returns the query flag of
function set-process-query-on-exit-flag process flag
This function sets the query flag of
flag. It returns
Here is an example of using
set-process-query-on-exit-flag on a shell process to avoid querying:
(set-process-query-on-exit-flag (get-process "shell") nil)
user option confirm-kill-processes
If this user option is set to
t (the default), then Emacs asks for confirmation before killing processes on exit. If it is
nil, Emacs kills processes without confirmation, i.e., the query flag of all processes is ignored.