I sent this patch a month ago, but it got no reply. Perhaps that I
accidentally had html email format didn't help.

During the extra hours of org-extend-today-until, when
org-clock-mode-line-total is 'today, the clocked time shown in the
modeline is wrong. It ignores all previously clocked time, when it
should add them starting from the past day beyond
org-extend-today-until hours.  This also affects clock tables.

The problem can be reproduced in emacs -q with the following code,
as long as the current time is not between 11 PM and 12 AM:

  (progn
    (require 'org-clock)
    (setq org-clock-mode-line-total 'today)
    (setq org-extend-today-until 23)
    (format-time-string "%a %D %l:%M %p" (org-clock-get-sum-start)))

expected result:
A date of yesterday, time of 11:00 PM

Actual result:
A date of today, time of 11:00 PM

Note this patch only fixes a bug where org-extend-today-until
is already used.


- Ian Kelling

>From 0c23ccb9b00fd42f830f5a7472e2980b93c6040f Mon Sep 17 00:00:00 2001
From: Ian Kelling <ian...@gmail.com>
Date: Sun, 15 Sep 2013 08:03:24 -0700
Subject: [PATCH] Fix incorrect time calculation for `org-extend-today-until'

* lisp/org-clock.el (org-clock-get-sum-start): Fix bad date
  math, affecting mode line and clock tables.

TINYCHANGE
---
 lisp/org-clock.el | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/lisp/org-clock.el b/lisp/org-clock.el
index 9f22562..3195dc1 100644
--- a/lisp/org-clock.el
+++ b/lisp/org-clock.el
@@ -1368,10 +1368,12 @@ decides which time to use."
       (current-time))
      ((equal cmt "today")
       (setq msg-extra "showing today's task time.")
-      (let* ((dt (decode-time (current-time))))
-	(setq dt (append (list 0 0 0) (nthcdr 3 dt)))
-	(if org-extend-today-until
-	    (setf (nth 2 dt) org-extend-today-until))
+      (let* ((dt (decode-time (current-time)))
+	     (hour (nth 2 dt))
+	     (day (nth 3 dt)))
+	(if (< hour org-extend-today-until) (setf (nth 3 dt) (1- day)))
+	(setf (nth 2 dt) org-extend-today-until)
+	(setq dt (append (list 0 0) (nthcdr 2 dt)))
 	(apply 'encode-time dt)))
      ((or (equal cmt "all")
 	  (and (or (not cmt) (equal cmt "auto"))
-- 
1.8.3.1


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