From 7c30885b267a4bfbd20708f6e00f46bb9b564cfb Mon Sep 17 00:00:00 2001
From: Bastien Guerry <bzg@altern.org>
Date: Sun, 3 Jul 2011 13:38:56 +0200
Subject: [PATCH] org-hacks.org: Update about time computation.

---
 org-hacks.org | 28 +++++++++++-----------------
 1 file changed, 11 insertions(+), 17 deletions(-)

diff --git a/org-hacks.org b/org-hacks.org
index a9d7868..f52a3fa 100644
--- a/org-hacks.org
+++ b/org-hacks.org
@@ -560,6 +560,14 @@ and dividing time values by integers
 : | 52:22 |  4.62 |        11:20 |
 : #+TBLFM: $3='(with-time t (/ $1 $2))
 
+*Update*: As of Org version 7.6, you can use the =T= flag (both in Calc and
+Elisp formulas) to compute time durations.  For example:
+
+: | Task 1 | Task 2 |   Total |
+: |--------+--------+---------|
+: |  35:00 |  35:00 | 1:10:00 |
+: #+TBLFM: @2$3=$1+$2;T
+
 *** Dates computation
 
 Xin Shi [[http://article.gmane.org/gmane.emacs.orgmode/15692][asked]] for a way to calculate the duration of 
@@ -574,23 +582,9 @@ Try the following:
 | 2004.08.07 | 2005.07.08 |      335 |
 :#+TBLFM: $3=(date(<$2>)-date(<$1>))
 
-See this thread:
-
-    http://thread.gmane.org/gmane.emacs.orgmode/7741
-
-as well as this post (which is really a followup on the
-above):
-
-    http://article.gmane.org/gmane.emacs.orgmode/7753
-
-The problem that this last article pointed out was solved
-in
-
-    http://article.gmane.org/gmane.emacs.orgmode/8001
-
-and Chris Randle's original musings are at
-
-    http://article.gmane.org/gmane.emacs.orgmode/6536/
+See [[http://thread.gmane.org/gmane.emacs.orgmode/7741][this thread]] as well as [[http://article.gmane.org/gmane.emacs.orgmode/7753][this post]] (which is really a followup on the
+above).  The problem that this last article pointed out was solved in [[http://article.gmane.org/gmane.emacs.orgmode/8001][this
+post]] and Chris Randle's original musings are [[http://article.gmane.org/gmane.emacs.orgmode/6536/][here]].
 
 *** Hex computation
 
-- 
2.11.4.GIT