[messaging] Minimal requirements for group chat

[Michael Rogers]

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On 16/04/14 22:42, Ximin Luo wrote:
> Extending this to dynamic groups is more tricky however, since one
> needs to figure out what happens when join/part operations interact
> with the partial-order. I can go in more detail, but the last time
> I did so it didn't seem like anyone else was interested in the
> problem.

For what it's worth, I'm definitely interested in hearing more about
your partial ordering ideas - I just didn't have anything intelligent
to say about them last time. :-) I do think though that it's worth
separating the problems of ordering and membership management if we
possibly can. Each of them looks to be a pretty hard problem in its
own right.

Cheers,
Michael
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