ietf-nntp Simplification of wildmat

[Clive D.W. Feather]

Charles Lindsey said:
> So I prefer to go with Clive's formulation, but cutting it down to the
> minimum necessary to match newsgroup-names (leaving implementors to do the
> best they can if they continue to support XPAT). This means at least
> including '!' and ',', though I could be persuaded to leave out '[...]',
> and I think there is no remaining need for '\' at all. If '[...]' remains,
> then it seems we may have to forbid ',' within it.
> 
> I think it would be useful for Clive to publish his latest minimal
> formulation along those lines. I suspect it will be considerably shorter
> than some of his earlier versions.

I have put two versions on my web site.

<http://www.davros.org/nntp-texts/section-5a.txt>
  Full proposal with sets, updated to the end of this thread. Note that
  \ is forbidden, comma can't occur in sets, and [d-a] matches nothing.
<http://www.davros.org/nntp-texts/section-5b.txt>
  Same proposal with sets removed and [ and ] also forbidden.

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