Re: iCalendar support: reply to invitations, sync to org

[Jan Tatarik <jan.tatarik@gmail.com>]

On Thu, Apr 04 2013, David Engster wrote:

> Jan Tatarik writes:
>> On Wed, Apr 03 2013, David Engster wrote:
>>> Jan, would you be interested in that? As you probably know, this would
>>> require that you assign copyright of your code to the FSF and to sign
>>> papers. Also, your code would need some changes to be compatible with
>>> older Emacsen.

>> As far as making the code compatible, I would appreciate some guidance
>> there. Not just wrt older Emacsen, but also regarding coding
>> conventions, namespace, etc.

> I haven't looked at your code in detail yet. But a first few comments:

> The first and for you probably most frustrating problem is the
> dependence on cl-lib, which is only available since 24.3. On older
> Emacsen you only have 'cl', from which you're only allowed to use
> macros, though (see the mentioned coding conventions for further
> details). So I'm afraid you have to forgo the functions (but not macros)
> you use from cl-lib. EIEIO is OK, though; Gnus provides a fallback
> library for that on older Emacsen.

> Your package is a bit complicated since it involves three things:
> icalendar, Gnus and Org. Still, I think it would be preferable to have
> everything in a single file with a single namespace 'gnus-calendar'.
> Everything should be prefixed with that; this includes methods and
> macros (like your currently used `with-decoded-handle'). If you think
> that some of your stuff would better fit in the icalendar package, Org,
> or somewhere else in Gnus, then we should try to get this in there.

The code belongs to gnus, I think. I will start condensing it into
single package that would fit in gnus.