+ (if (and (require 'custom)
+ (fboundp 'custom-declare-variable))
+ ;; you have "new custom".
+ t
+ ;; you have custom, but it is "old".
+ (message "\
+ ** \"old custom\" is loaded. See README if you want to use \"new custom\".")
+ (sleep-for 1)
+ nil)
+ ;; you don't have custom.