[gnus git] branch master updated: m0-11-83-gae2d1ae =1= time-date.el: Port new time stamp handling to old Emacs and to XEmacs

       via  ae2d1aecc8790a70970b22501eb342150d1f1f6e (commit)
      from  147f091b675f6c4caca95707cb7bd1519c9e7a2d (commit)


- Log -----------------------------------------------------------------
commit ae2d1aecc8790a70970b22501eb342150d1f1f6e
Author: Paul Eggert <[email protected]>
Date:   Mon Nov 17 08:59:40 2014 +0000

    time-date.el: Port new time stamp handling to old Emacs and to XEmacs

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index b6dbedc..83f87d3 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -5,13 +5,21 @@
 
 2014-11-17  Paul Eggert  <[email protected]>
 
+	Port new time stamp handling to old Emacs and to XEmacs.
+	This is needed for Gnus, which copies time-date.el and which
+	runs on older Emacs implementations.
+	* time-date.el (with-decoded-time-value):
+	Handle 'nil' and floating-point arg more compatibly with new Emacs.
+	(encode-time-value, with-decoded-time-value):
+	Obsolete only if new Emacs.
+	(time-add, time-subtract, time-less-p): Define if not new Emacs.
+
 	Improve time stamp handling, and be more consistent about it.
 	This implements a suggestion made in:
 	http://lists.gnu.org/archive/html/emacs-devel/2014-10/msg00587.html
 	Among other things, this means timer.el no longer needs to
 	autoload the time-date module.
-	* time-date.el (seconds-to-time, days-to-time, time-since):
-	Simplify by using new functionality.
+	* time-date.el (seconds-to-time, days-to-time, time-since)
 	(with-decoded-time-value):
 	Treat 'nil' as current time.  This is mostly for XEmacs.
 	(encode-time-value, with-decoded-time-value): Obsolete.
diff --git a/lisp/time-date.el b/lisp/time-date.el
index 100e856..a9c30f4 100644
--- a/lisp/time-date.el
+++ b/lisp/time-date.el
@@ -65,12 +65,36 @@ list (HIGH LOW MICRO PICO)."
 		     (pop elt)))
 	     (time-value (car elt))
 	     (gensym (make-symbol "time")))
-	`(let* ,(append `((,gensym ,time-value)
+	`(let* ,(append `((,gensym (or ,time-value (current-time)))
+			  (,gensym
+			   (cond
+			    ((integerp ,gensym)
+			     (list (ash ,gensym -16)
+				   (logand ,gensym 65535)))
+			    ((floatp ,gensym)
+			     (let* ((usec (* 1000000 (mod ,gensym 1)))
+				    (ps (round (* 1000000 (mod usec 1))))
+				    (us (floor usec))
+				    (lo (floor (mod ,gensym 65536)))
+				    (hi (floor ,gensym 65536)))
+			       (if (eq ps 1000000)
+				   (progn
+				     (setq ps 0)
+				     (setq us (1+ us))
+				     (if (eq us 1000000)
+					 (progn
+					   (setq us 0)
+					   (setq lo (1+ lo))
+					   (if (eq lo 65536)
+					       (progn
+						 (setq lo 0)
+						 (setq hi (1+ hi))))))))
+			       (list hi lo us ps)))
+			    (t ,gensym)))
 			  (,high (pop ,gensym))
 			  ,low ,micro)
 			(when pico `(,pico))
 			(when type `(,type)))
-	   (or ,gensym (setq ,gensym (current-time)))
 	   (if (consp ,gensym)
 	       (progn
 		 (setq ,low (pop ,gensym))
@@ -108,7 +132,7 @@ it is assumed that PICO was omitted and should be treated as zero."
    ((eq type 3) (list high low micro pico))
    ((null type) (encode-time-value high low micro 0 pico))))
 
-(when (featurep 'emacs)
+(when (and (fboundp 'time-add) (subrp (symbol-function 'time-add)))
   (make-obsolete 'encode-time-value nil "25.1")
   (make-obsolete 'with-decoded-time-value nil "25.1"))
 
@@ -192,7 +216,7 @@ TIME should be either a time value or a date-time string."
 ;;;###autoload(autoload 'time-less-p "time-date")
 
 (eval-when-compile
-  (when (not (featurep 'emacs))
+  (when (not (and (fboundp 'time-add) (subrp (symbol-function 'time-add))))
 
     (defun time-add (t1 t2)
       "Add two time values T1 and T2.  One should represent a time difference."

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Summary of changes:
 lisp/ChangeLog    |   12 ++++++++++--
 lisp/time-date.el |   32 ++++++++++++++++++++++++++++----
 2 files changed, 38 insertions(+), 6 deletions(-)

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