Re: [Evolution] duplicate reminders, snooze times

[Daniel Pocock <daniel pocock pro>]

On 07/07/15 17:46, Milan Crha wrote:
> On Tue, 2015-07-07 at 08:50 +0200, Daniel Pocock wrote:
> > If the CalDAV and iCalendar standards don't specify a way to do this,
>
>       Hi,
> to be honest, I'm just not aware of anything for it. I do not have the
> RFCs that well studied (and remembered), thus it's possible there is a
> way to store such things on a CalDAV calendar, in an iCalendar
> structure.
>
> > then would the Evolution developers consider submitting an IETF draft
> > proposing a solution?
>
> I wouldn't be surprised if there is one already. I wouldn't do it
> myself right now, it requires some time to get with something sane.


Looking at this more closely, it appears that Mozilla Lightning stores
the alarm snooze and dismiss status in the CalDAV server using custom
fields X-MOZ-LASTACK and X-MOZ-SNOOZE-TIME

Mozilla is also looking at storing local state for alarms from read-only
calendars:
https://bugzilla.mozilla.org/show_bug.cgi?id=861594

Some other vendors, including Google Calendar, appear to support the
X-MOZ-* extensions:

https://bugzilla.mozilla.org/show_bug.cgi?id=451821

A search engine finds other examples.

There appears to be work in progress on an RFC, it is currently known as
draft-daboo-valarm-extensions

https://tools.ietf.org/html/draft-daboo-valarm-extensions-04

It could be interesting for the GNOME Evolution community to give
feedback on the draft.

I created enhancement requests in Bugzilla for each of these possible
solutions:

https://bugzilla.gnome.org/show_bug.cgi?id=777274
https://bugzilla.gnome.org/show_bug.cgi?id=777275

Regards,

Daniel