Use a more backwards-compatible timer format.

* etc/NEWS: Document it.
* lisp/emacs-lisp/timer.el (timer): PSECS is now at the end, rather than
being right after USECS, as that better supports old code that
inadvisedly looked directly at the timer vector.
* src/keyboard.c (decode_timer): Get PSECS from the 8th (origin-0)
vector element, not from the 4th, since PSECS is now at the end.
(Fcurrent_idle_time): Doc fix.

Fixes: debbugs:12430

1 files changed, 3 insertions, 3 deletions

diff --git a/lisp/emacs-lisp/timer.el b/lisp/emacs-lisp/timer.el
index a66d5972d82..2248dde8c03 100644
--- a/lisp/emacs-lisp/timer.el
+++ b/lisp/emacs-lisp/timer.el
@@ -28,8 +28,8 @@
 ;;; Code:
 
 ;; Layout of a timer vector:
-;; [triggered-p high-seconds low-seconds usecs psecs repeat-delay
-;;  function args idle-delay]
+;; [triggered-p high-seconds low-seconds usecs repeat-delay
+;;  function args idle-delay psecs]
 ;; triggered-p is nil if the timer is active (waiting to be triggered),
 ;;  t if it is inactive ("already triggered", in theory)
 
@@ -42,7 +42,7 @@
             (:type vector)
             (:conc-name timer--))
   (triggered t)
-  high-seconds low-seconds usecs psecs repeat-delay function args idle-delay)
+  high-seconds low-seconds usecs repeat-delay function args idle-delay psecs)
 
 (defun timerp (object)
   "Return t if OBJECT is a timer."