bug: only first event returned if COUNT=-1

[zoifar]

Describe the bug

only first event returned if COUNT=-1

To Reproduce

ical_string="""BEGIN:VCALENDAR
BEGIN:VEVENT
DTSTAMP:20231102T221721Z
DTSTART;VALUE=DATE:20231002
DTEND;VALUE=DATE:20231009
SUMMARY:test123
CATEGORIES:other
SUBCALENDAR-NAME:test
EVENT-ID:538924
EVENT-ALLDAY:true
RRULE:FREQ=WEEKLY;UNTIL=20240331;COUNT=-1;INTERVAL=4;BYDAY=MO
CREATED:20231102T221633Z
LAST-MODIFIED:20231102T221716Z
TRANSP:TRANSPARENT
STATUS:CONFIRMED
END:VEVENT
END:VCALENDAR"""
calendar = icalendar.Calendar.from_ical(ical_string)
events=recurring_ical_events.of(calendar).at(2023)

for event in events:
    start = event["DTSTART"].dt
    duration = event["DTEND"].dt - event["DTSTART"].dt
    print("start {} duration {}".format(start, duration))

ICS file

BEGIN:VCALENDAR
BEGIN:VEVENT
DTSTAMP:20231102T221721Z
DTSTART;VALUE=DATE:20231002
DTEND;VALUE=DATE:20231009
SUMMARY:test123
CATEGORIES:other
SUBCALENDAR-NAME:test
EVENT-ID:538924
EVENT-ALLDAY:true
RRULE:FREQ=WEEKLY;UNTIL=20240331;COUNT=-1;INTERVAL=4;BYDAY=MO
CREATED:20231102T221633Z
LAST-MODIFIED:20231102T221716Z
TRANSP:TRANSPARENT
STATUS:CONFIRMED
END:VEVENT
END:VCALENDAR

Expected behavior

all events returned

Console output

start 2023-10-02 duration 7 days, 0:00:00

Version:

2.1.2

Additional context

This is generated by atlassian confluence calendar when future instances of the event are deleted.

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[niccokunzmann]

Thanks for reporting this! It looks like it should be possible to implement a tested fix for this. Would you like to give it a go?

[niccokunzmann]

I created #129 to fix this.

[niccokunzmann]

This is included in v2.1.3, soon to be published.