Autoload doom-quit-p & revise its docstring

core/autoload/ui.el

@@ -124,3 +124,15 @@ to a new one."
 ;;;###autoload
 (defun doom*recenter (&rest _)
   (recenter))
+
+;;;###autoload
+(defun doom-quit-p (&optional prompt)
+  "Prompt the user for confirmation when killing Emacs.
+
+Returns t if it is safe to kill this session. Does not prompt if no real buffers
+are open."
+  "Return t if this session should be killed silently."
+  (if (ignore-errors (doom-real-buffer-list))
+      (or (yes-or-no-p (format "››› %s" (or prompt "Quit Emacs?")))
+          (ignore (message "Aborted")))
+    t))