-;; Fixme: sanitize this.
-(defcustom url-cache-expired
- (lambda (t1 t2) (>= (- (car t2) (car t1)) 5))
- "*A function determining if a cached item has expired.
-It takes two times (numbers) as its arguments, and returns non-nil if
-the second time is 'too old' when compared to the first time."
- :type 'function
- :group 'url-cache)
-