* lisp/net/tramp.el (tramp-time-diff): Revert previous change due to backwards
compatibility.
(defun tramp-time-diff (t1 t2)
"Return the difference between the two times, in seconds.
T1 and T2 are time values (as returned by `current-time' for example)."
- (float-time (time-subtract t1 t2)))
+ ;; Starting with Emacs 25.1, we could change this to use `time-subtract'.
+ (float-time (subtract-time t1 t2)))
;; Currently (as of Emacs 20.5), the function `shell-quote-argument'
;; does not deal well with newline characters. Newline is replaced by