Emacs сохраняются автоматически на буфере коммутатора

I'm kind of new to emacs lisp myself but this works in my testing:

(defadvice switch-to-buffer (before save-buffer-now)
  (save-buffer))

(ad-activate 'switch-to-buffer)

It's kind of annoying though because it's called after EVERY buffer (like scratch). So, consider this answer a hint.

When you want to disable it, you'll need to call:

(ad-disable-advice 'switch-to-buffer 'before 'save-buffer-now)
(ad-activate 'switch-to-buffer)

A couple of ideas.

First, if you find yourself invoking a command like save with a sufficiently high frequency, you might consider a shorter key binding for the command. For example, I also found myself having the same "twitch," so now I use f2 instead of C-x C-s for saving edits.

The function that I bind to f2 saves every unsaved buffer unconditionally. You might find it useful:

(defun force-save-all ()
    "Unconditionally saves all unsaved buffers."
    (interactive)
    (save-some-buffers t))

(global-set-key [f2] 'force-save-all)

Now, on to the main issue. You could try something like this (notice that force-save-all is called):

(defun my-switch-to-buffer (buffer)
    (interactive (list (read-buffer "Switch to buffer: " (cadr buffer-name-history) nil)))
    (force-save-all)
    (switch-to-buffer buffer))

(global-set-key "\C-xb" 'my-switch-to-buffer)

Of course, you could also bind the switch buffer functionality to another key, like a function key, so that it's a one press operation.

I thought that @seth had a great idea about using advice, but I noticed that the ELisp manual suggests that advice not be used for key bindings. I'm not quite sure why this is the case, but that's what the manual suggests FYI.