From b7adb3930de7cc422b2beee61cb20285a3916571 Mon Sep 17 00:00:00 2001
From: Philipp Stephani <address@hidden>
Date: Tue, 27 Sep 2016 20:47:23 +0200
Subject: [PATCH] Make querying to kill processes customizable

Introduce a new customization option, `confirm-kill-processes', that
users can set to nil if they don't want Emacs to nag them about killing
processes.

* lisp/files.el (confirm-kill-processes): New customization option.
(save-buffers-kill-emacs): Use customization option.

* test/lisp/files-tests.el
(files-test--save-buffers-kill-emacs--confirm-kill-processes): Add
test for new customization option.
---
 lisp/files.el            | 14 +++++++++++++-
 test/lisp/files-tests.el | 19 +++++++++++++++++++
 2 files changed, 32 insertions(+), 1 deletion(-)

diff --git a/lisp/files.el b/lisp/files.el
index 4bd708d..f481b99 100644
--- a/lisp/files.el
+++ b/lisp/files.el
@@ -6757,11 +6757,22 @@ confirm-kill-emacs
   :group 'convenience
   :version "21.1")
 
+(defcustom confirm-kill-processes t
+  "Non-nil if Emacs should confirm killing processes on exit.
+If this variable is nil, the value of
+`process-query-on-exit-flag' is ignored.  Otherwise, if there are
+processes with a non-nil `process-query-on-exit-flag', Emacs will
+prompt the user before killing them."
+  :type 'boolean
+  :group 'convenience
+  :version "26.1")
+
 (defun save-buffers-kill-emacs (&optional arg)
   "Offer to save each buffer, then kill this Emacs process.
 With prefix ARG, silently save all file-visiting buffers without asking.
 If there are active processes where `process-query-on-exit-flag'
-returns non-nil, asks whether processes should be killed.
+returns non-nil and `confirm-kill-processes' is non-nil,
+asks whether processes should be killed.
 Runs the members of `kill-emacs-query-functions' in turn and stops
 if any returns nil.  If `confirm-kill-emacs' is non-nil, calls it."
   (interactive "P")
@@ -6776,6 +6787,7 @@ save-buffers-kill-emacs
                 (yes-or-no-p "Modified buffers exist; exit anyway? ")))
      (or (not (fboundp 'process-list))
          ;; process-list is not defined on MSDOS.
+         (not confirm-kill-processes)
          (let ((processes (process-list))
                active)
            (while processes
diff --git a/test/lisp/files-tests.el b/test/lisp/files-tests.el
index 479848a..581c8bf 100644
--- a/test/lisp/files-tests.el
+++ b/test/lisp/files-tests.el
@@ -197,5 +197,24 @@ files-test-bug-18141-file
       (setenv "FOO" foo-env)
       (setenv "BAR" bar-env))))
 
+(ert-deftest files-test--save-buffers-kill-emacs--confirm-kill-processes ()
+  "Test that `save-buffers-kill-emacs' honors
+`confirm-kill-processes'."
+  (cl-letf* ((yes-or-no-p-prompts nil)
+             ((symbol-function #'yes-or-no-p)
+              (lambda (prompt)
+                (push prompt yes-or-no-p-prompts)
+                nil))
+             (kill-emacs-args nil)
+             ((symbol-function #'kill-emacs)
+              (lambda (&optional arg) (push arg kill-emacs-args)))
+             (process (make-process :name "sleep"
+                                    :command '("/bin/sleep" "1000")))
+             (confirm-kill-processes nil))
+    (save-buffers-kill-emacs)
+    (kill-process process)
+    (should-not yes-or-no-p-prompts)
+    (should (equal kill-emacs-args '(nil)))))
+
 (provide 'files-tests)
 ;;; files-tests.el ends here
-- 
2.10.0