Re: [Jmap] Tasks (draft-ietf-jmap-tasks-04) and recurrence

Hi Ricardo,

thanks for taking your time to review and raising concerns!

I think Neil already made many good points here.

I can probably add, that from a practical point-of-view, my experience 
is, that few users do use recurring tasks, even if supported by the 
underlying system. One might assume that such users will make sure to 
use a sufficiently powerful "client B" by their own choice.

Regarding Neil's their proposal, I'd probably argue that this is too 
abstract to foresee for users at setup time (i.e., many users will never 
use recurring tasks, even if their server allows to. In that sense, 
(server-side?) expansion might be the "cleanest" issue. I need to check 
deeper however if this would be easily feasible in the current state.

Another option might be to add a boolean like "hasRecurrence" to each 
affected "main" task, so that clients are taught that this certain task 
might not be rendered correctly (perhaps a little ugly for the client 
implementation/user interaction though)

Thanks and best,
Hans-Joerg

On 14.06.22 08:23, Neil Jenkins wrote:
> The state strings are primarily for the server to advertise support. 
> If the server supports recurrences, either:
>
>   * the client supports recurrences: fine.
>   * the client doesn't support recurrence expansion but can opt in to
>     the capability and ask the server to expand: fine.
>   * the client doesn't support recurrences in any way – it can see the
>     capability is there on the server and either refuse to add the
>     account with an appropriate error, or warn the user about
>     compatibility issues.
>
> There are many todo systems that don't support recurring todos, so I 
> think it's a reasonable thing to split out as a capability. You 
> definitely want to avoid splitting it up into different capabilities 
> as much as possible to avoid exponential combinations to test and 
> support, but I think this one is reasonable.
>
> Cheers,
> Neil.
>
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