(defcustom ggtags-highlight-tag 0.25
"If non-nil time in seconds before highlighting tag at point.
-Set to `nil' to disable tag highlighting."
+Set to nil to disable tag highlighting."
:set (lambda (sym value)
(when (fboundp 'ggtags-setup-highlight-tag-at-point)
(ggtags-setup-highlight-tag-at-point value))