Ed Reingold <reingold at emr.cs.iit.edu>

(calendar-current-date): Add an optional argument giving an offset from today.

2 files changed, 12 insertions, 3 deletions

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index 27d9f28702a..354580577c5 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,3 +1,8 @@
+2009-07-08  Ed Reingold  <reingold@emr.cs.iit.edu>
+
+        * calendar/calendar.el (calendar-current-date):
+        Add an optional argument giving an offset from today.
+
 2009-07-08  Glenn Morris  <rgm@gnu.org>
 
         * tutorial.el (tutorial--describe-nonstandard-key):
diff --git a/lisp/calendar/calendar.el b/lisp/calendar/calendar.el
index 47bf62fa06a..4ec820dd20b 100644
--- a/lisp/calendar/calendar.el
+++ b/lisp/calendar/calendar.el
@@ -1784,10 +1784,14 @@ the STRINGS are just concatenated and the result truncated."
          (t (set-buffer buffer)
             (bury-buffer))))))
 
-(defun calendar-current-date ()
-  "Return the current date in a list (month day year)."
+(defun calendar-current-date (&optional offset)
+  "Return the current date in a list (month day year).
+Optional OFFSET is number of days from current date."
   (let ((now (decode-time)))
-    (list (nth 4 now) (nth 3 now) (nth 5 now))))
+    (calendar-gregorian-from-absolute
+     (+ (calendar-absolute-from-gregorian
+         (list (nth 4 now) (nth 3 now) (nth 5 now)))
+        (if offset offset 0)))))
 
 (defun calendar-column-to-segment ()
   "Convert current column to calendar month \"segment\".