Ensure expansion-range of recurring events includes today/now

[noctux]

I'm syncing a contacts-birthday calendar with vdirsyncer and am trying to use that with khal. An example VEVENT looks like this:

BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//ownCloud//NONSGML Contacts 0.3.0.17//EN
BEGIN:VEVENT
DTSTART;VALUE=DATE:19650423
DURATION:P1D
UID:badf00d0-0000-0000-0000-000000000000
RRULE:FREQ=YEARLY
SUMMARY:Dummy's Birthday (1965)
END:VEVENT
END:VCALENDAR

However, the event is not displayed for the 23.04.2014 (or 2015). I did experiment a bit with the event (the code for _get_vevent() is taken from khalendar_aux_test.py):

Python 2.7.8 (default, Sep 24 2014, 18:26:21) 
[GCC 4.9.1 20140903 (prerelease)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import datetime
>>> import pytz
>>> import icalendar
>>> from khal.khalendar import aux
>>> event_test = """BEGIN:VCALENDAR
... VERSION:2.0
... PRODID:-//ownCloud//NONSGML Contacts 0.3.0.17//EN
... BEGIN:VEVENT
... DTSTART;VALUE=DATE:19650423
... DURATION:P1D
... UID:badf00d0-0000-0000-0000-000000000000
... RRULE:FREQ=YEARLY
... SUMMARY:Dummy's Birthday (1965)
... END:VEVENT
... END:VCALENDAR"""
>>> def _get_vevent(event):
...     ical = icalendar.Event.from_ical(event)
...     for component in ical.walk():
...         if component.name == 'VEVENT':
...             return component
... 
>>> vev = _get_vevent(event_test)
>>> berlin = pytz.timezone('Europe/Berlin')
>>> aux.expand(vev, berlin)
[(datetime.date(1965, 4, 23), datetime.date(1965, 4, 24)), (datetime.date(1966, 4, 23), datetime.date(1966, 4, 24)), (datetime.date(1967, 4, 23), datetime.date(1967, 4, 24)), (datetime.date(1968, 4, 23), datetime.date(1968, 4, 24)), (datetime.date(1969, 4, 23), datetime.date(1969, 4, 24)), (datetime.date(1970, 4, 23), datetime.date(1970, 4, 24)), (datetime.date(1971, 4, 23), datetime.date(1971, 4, 24)), (datetime.date(1972, 4, 23), datetime.date(1972, 4, 24)), (datetime.date(1973, 4, 23), datetime.date(1973, 4, 24)), (datetime.date(1974, 4, 23), datetime.date(1974, 4, 24)), (datetime.date(1975, 4, 23), datetime.date(1975, 4, 24)), (datetime.date(1976, 4, 23), datetime.date(1976, 4, 24)), (datetime.date(1977, 4, 23), datetime.date(1977, 4, 24)), (datetime.date(1978, 4, 23), datetime.date(1978, 4, 24)), (datetime.date(1979, 4, 23), datetime.date(1979, 4, 24))]
>>> len(aux.expand(vev, berlin))
15

which fits the bill with the comment in aux.py:65:

            # rrule really doesn't like to calculate all recurrences until
            # eternity, so we only do it 15 years into the future

So if that is the acutal source of the issue, it might be desireable to calculate +/- Y years around the current year in expand aswell.

Regards,
Simon

[untitaker]

This is something we'll have to take care of with #118.

[untitaker]

Keeping this open as a reminder.