Fix quit confirmations in daemon; add for frames

+ Add quit confirmation when closing a frame with real buffers
+ Ensure quit confirmations also work in daemon frames (tty or gui)

core/core-ui.el

@@ -34,12 +34,23 @@
  pos-tip-border-width 1
  ;; no beeping or blinking please
  ring-bell-function #'ignore
- visible-bell nil
- ;; Ask for confirmation on quit only if real buffers exist
- confirm-kill-emacs (lambda (_) (if (doom-real-buffers-list) (y-or-n-p "››› Quit?") t)))
+ visible-bell nil)
 
 (fset #'yes-or-no-p #'y-or-n-p) ; y/n instead of yes/no
 
+;; Ask for confirmation when trying to kill emacs or close a frame that has real
+;; buffers open in it.
+(defun doom-quit-p (&optional prompt)
+  "Return t if this session should be killed; prompts the user for
+confirmation."
+  (interactive)
+  (if (ignore-errors (doom-real-buffers-list))
+      (or (yes-or-no-p (format "››› %s" (or prompt "Quit Emacs?")))
+          (ignore (message "Aborted")))
+    t))
+(setq confirm-kill-emacs nil)
+(add-hook 'kill-emacs-query-functions #'doom-quit-p)
+
 ;; show typed keystrokes in minibuffer
 (setq echo-keystrokes 0.02)
 ;; ...but hide them while isearch is active
@@ -119,6 +130,8 @@ mode is detected.")
 ;; Bootstrap
 ;;
 
+(global-set-key [remap delete-frame] #'doom/delete-frame)
+
 ;; auto-enabled in Emacs 25+; I'd rather enable it manually
 (global-eldoc-mode -1)