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Re: AssocSS issue #5 [was: Minutes for XML Core WG telcon of 2009 July 1]

From: John Cowan <cowan@ccil.org>
Date: Fri, 17 Jul 2009 12:21:27 -0400
To: "Grosso, Paul" <pgrosso@ptc.com>
Cc: public-xml-core-wg@w3.org
Message-ID: <20090717162127.GD7102@mercury.ccil.org>
Grosso, Paul scripsit:

> > The syntax bans any duplicate pseudo-attrs.
> 
> No, syntax can't do that.  Banning duplicate attributes is part
> of the semantic processing.  In the case of XML, it's a WFC 
> (WFC Unique Att Spec) which gets applied after the syntactic parsing.

I think this is an overly limited understanding of "syntax"; I consider
WFCs to be syntactic constraints that don't happen to be readily expressible
in the BNF.

> There is no a priori reason we need to ban duplicate pseudo-atts
> before ignoring unknown ones.

No, but it's not a silly idea either.

-- 
How they ever reached any  conclusion at all    <cowan@ccil.org>
is starkly unknowable to the human mind.        http://www.ccil.org/~cowan
        --"Backstage Lensman", Randall Garrett
Received on Friday, 17 July 2009 16:22:03 GMT

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