ietf-nntp Wildmats (was: draft posted)

[Clive D.W. Feather]

Stan O Barber said:
>> But the "SHALL appear only once" wording is wrong.

> The SHALL wording is wrong if we want to allow repeats, which is what 
> the current discussion is about. The SHALL wording does render the need 
> to explain duplicates moot.
> 
> My point, to repeat, is that we need to explain what a duplicate means. 
> Otherwise, an implementor may assume it means something based on how 
> certain servers implement the command. That would be a mistake and I'd 
> like to see it avoided.

Okay:

In 11.4, change:

  Each message-id SHALL appear only once in a response. The order
  of the response has no specific significance and may vary from
  response to response in the same session.

to:

  A message-id MAY appear more than once in a response. The order
  of the response has no specific significance and may vary from
  response to response in the same session. If a message-id appears
  more than once it has the same meaning as if it appears only once.

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