Vim prompts to save the buffer before switching if no other window is holding it. In other words, it prompts to save the buffer before putting it in background. How can I get the same behavior in Emacs?
A related question is about automatically saving the buffer.
(defun tst-nohidden (&optional orig-fn buffer-or-name &rest _)
(let ((to-buffer (if (eq (type-of buffer-or-name) 'string) buffer-or-name (buffer-name buffer-or-name))))
;; Check if switching to or from a non-file buffer
(unless (or (equal (buffer-name) to-buffer)
(string-prefix-p "*" (string-trim-left (buffer-name)))
(if buffer-or-name (string-prefix-p "*" (string-trim-left to-buffer)) nil))
(when (and
(buffer-modified-p)
(= 1 (length (get-buffer-window-list (buffer-name) nil t)))
(y-or-n-p (format "Save %s?" (buffer-name)))
(save-buffer))))))
;; Switching buffer in current window
(advice-add 'doom-run-switch-buffer-hooks-a :before 'tst-nohidden)
;; Closing current buffer
(advice-add '+workspace/close-window-or-workspace :before 'tst-nohidden)
(defun tst-nohidden-max (&optional arg)
(dolist (buf (buffer-list))
(when (and (get-buffer-window buf 'visible) (not (eq buf (current-buffer))))
(with-current-buffer buf (tst-nohidden)))))
;; While closing other buffers
(advice-add 'doom/window-maximize-buffer :before 'tst-nohidden-max)