sexp and icalendar-export-file

["Andreas Gösele" <goesele@hfph.mwn.de>]

Hi,

in my diary file I rely heavily on expressions like

%%(and (= (calendar-day-of-week date) 3) (diary-block 20 4 2020 24 7
       2020) (not (or (diary-date 1 5 2020) (diary-date 21 5 2020)
       (diary-date 1 6 2020) (diary-date 2 6 2020) (diary-date 11 6
       2020)))) 8:00-10:00 Some important event

This works well in the Calendar.

But it doesn't work with icalendar-export-file.

I guess it is one of the "self-made sexp entries" that "are not
understood" as per icalendar.el

Is there any way I could export something like this into an icalendar
file?

Or is there any way I could achieve the same thing with another kind of
expression which can be exported? (Of course, I don't want to list the
single dates!)

Basically the expressions combines a week day, a diary block and some
exceptions. (Actually I also use sexp expressions which combine two or
three weekdays, a diary block and exceptions, but I could live without
that.)

Thanks a lot!

Andreas