icalendar--convert-date-to-ical
icalendar--convert-date-to-ical is a compiled Lisp function in `icalendar.el
'.
(icalendar--convert-date-to-ical NONMARKER ENTRY-MAIN)
Convert `diary-date' diary entry to iCalendar format -- unsupported!
FIXME!
NONMARKER is a regular expression matching the start of non-marking
entries. ENTRY-MAIN is the first line of the diary entry.