[NNTP] Snapshot 4

[Clive D.W. Feather]

Ken Murchison said:
> CAPABILTIES:
> 
> - Why the specific order?  I can see a possible reason for _VERSION 
> being first (in fact _VERSION could almost go in the initial line of the 
> response), but I don't see where the order of the others really matters.

I thought it would be potentially useful for clients. It's no big deal, and
with the more generic handling of capabilities I no longer think it's worth
having.

As to putting VERSION in the initial line of the response, there's one
problem. If a server supports two compatible versions of NNTP (let's say 2
and 3) then the capability line is:

    VERSION 2 3

You can't have a variable number of arguments on an initial response line.
So which one do you have there?

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