Comment 3 for bug 231189

I've got the basics working, and Google Calendar seems happy with it.

I couldn't get recurring events to work in Evolution, but Evolution has the same problem with its own exported/re-imported iCalendar files. So, it seems that Evolution is just broken.

Events are exported with a duration of 1 hour, unless they appear to be all-day events. Any task whose due date is at midnight or 23:59 is considered an 'all day' event.

Anyway, this isn't perfect but it seems to do most of what it should. It seems ready to merge, and improvements can be made later if desired.