(tooltip-mode): Use custom-initialize-safe-default and simplify

:init-value.  Delete obsolete comment.

diff --git a/lisp/tooltip.el b/lisp/tooltip.el
index fabb154d7edc84dfe00aae3ed88a3ecb28e853a8..169ffafbbef97628278c19326b61f91f8b42a4d4 100644 (file)
--- a/lisp/tooltip.el
+++ b/lisp/tooltip.el
@@ -159,13 +159,11 @@ This might return nil if the event did not occur over a buffer."
   "Toggle Tooltip display.
 With ARG, turn tooltip mode on if and only if ARG is positive."
   :global t
-  ;; If you change the :init-value below, you also need to change the
-  ;; corresponding code in startup.el.
   :init-value (not (or noninteractive
-                      (and (boundp 'emacs-quick-startup) emacs-quick-startup)
-                      (not (and (fboundp 'display-graphic-p)
-                                (display-graphic-p)))
+                      emacs-quick-startup
+                      (not (display-graphic-p))
                       (not (fboundp 'x-show-tip))))
+  :initialize 'custom-initialize-safe-default
   :group 'tooltip
   (unless (or (null tooltip-mode) (fboundp 'x-show-tip))
     (error "Sorry, tooltips are not yet available on this system"))