How can I eliminate prompts and dialog boxes in Emacs and enable auto-saving?

Question

I never want to answer a prompt that asks me to save changes.

Whenever I close Emacs, I'm bombarded with dialog boxes and prompts. How can I avoid them and make Emacs automatically save all unsaved changes?

Also, how can I avoid the prompt when I close a single buffer with C-k and make Emacs automatically save the changes?

Answer 1

To avoid the prompts for saving files when quitting Emacs, you may pass a prefix argument to C-x C-c, i.e., quit with C-u C-x C-c.

Alternatively, add the following code to your .emacs file:

(global-set-key (kbd "C-x C-c")
                #'(lambda ()
                    (interactive)
                    (save-buffers-kill-terminal t)))

to quit without prompts using the usual C-x C-c keybinding.

Don't forget that at these prompts you may press ! to save all files.

Answer 2

I think this is what you are asking for:

(defun kill-buffer-no-query (&optional buffer)
  "Kill BUFFER without querying."
  (interactive)
  (unless buffer (setq buffer  (current-buffer)))
  (let ((kill-buffer-query-functions ())
        (buffer-save-without-query   t)
        (buffer-modified-p           (buffer-modified-p)))
    (unwind-protect
        (progn (set-buffer-modified-p nil)
               (kill-buffer buffer))
      (when (get-buffer buffer)
        (set-buffer-modified-p buffer-modified-p)))))