[Cosmo-dev] Recurrence modifications, filters, and diffs

[Jeffrey Harris]

Hi Brian,

> using the above example, let's say that avalon comes free on feb 12 at
> the appointed meeting time, so you want to grab it and give up
> middle-earth. you'd just send this:
> 
> <eventModification:record>
>  <eventModification:recurrenceid>20070212T120000</eventModification:recurrenceid>
> 
>  <eventModification:location />
> </eventModification:record>

This works fine for location, because empty string is available to
represent the deletion of the location (as opposed to deletion of the
modification of the attribute).

Consider a different scenario where the master event has a reminder 15
minutes before the meeting.  There's no longer any syntax to describe
"don't have a reminder for this occurrence", because the null value is
used to represent deletion of a modification.

Sincerely,
Jeffrey