[Orgmode] iCalendar export does not honor the ' org-agenda-default-appointment-duration' setting (v5.04)

[Anupam Sengupta]

Hi,

I have set the default appointment duration for the events with only a start
date/time to be 60 mins. This works perfectly well in the Agenda view;
however, the iCalendar exported events still use 2 hours as the duration for
the event.

The function which is causing this seems to be 'org-ical-ts-to-string' whose
doc. String clearly mentions that 2 hours are added.  Can this duration be
based on the 'org-agenda-default-appointment-duration' if that variable is
set?

Thanks!
Anupam