iCalendar DTEND year stays same in case date is computed

[apolitze]

Hi SMW developers,

while testing I exported an iCalender date that had a DTSTART 20241231 and was wondering why the year for DTEND stays the same, if the enddate is computed:

and I had a look into the iCalendar > DateParser, where it looks like $year might be updated in case date is computed:

SemanticResultFormats/src/iCalendar/DateParser.php

Line 40 in 6dd7e46

);

Setup
SMW: 4.0.2

Steps to reproduce:

1. Add two properties of type [[Has type::Date]] and set them to last day of year e.g.:

{{#set:Hat Startdatum|2024-12-31}}
{{#set:Hat Endedatum|2024-12-31}}

2. Ask and export the dates as iCalendar Result:

{{#ask:
 [[{{PAGENAME}}]]
 |?Hat Startdatum=start
 |?Hat Endedatum=end
 |format=icalendar
 |title=Termin
 |description=Termin
 |searchlabel=iCal Export
}}

Expected:

1. Termin.ics is exported and contains a calculated DTEND:20250101. Same behaviour that the next day is calculated as DTEND as if other dates are chosen.

Current:

1. Termin.ics is exported and contains a calculated DTEND:20240101, which is invalid because it is before the DTSTART:20241231

Can someone check this please?