Comment 63 for bug 307680

The problem is a bit with how to best put this into ics:

If we would be creating exceptions for each completed task, then the calendar would get quite large only due to completed tasks. Also, editing a once completed task would not modify the whole series but the exception.

If we set an X-Prop similar to alarms that all tasks after date N are completed, this wont be portable any time in the future and its not possible to have last weeks occurrence not completed but this weeks occurrence completed. Also its unclear how the completed state on the item itself should be.

I'd personally like to have working recurring tasks too, but its not easy to find a working concept here, as you see that other applications don't implement it at all :-)