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   Re: Official ISO 639 changes

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  • From: "David Brownell" <david-b@pacbell.net>
  • To: "John Cowan" <cowan@locke.ccil.org>, "Elliotte Rusty Harold" <elharo@metalab.unc.edu>
  • Date: Tue, 25 Apr 2000 20:22:07 -0700

> > Whether it's important or not, all XML 1.0 conforming parsers today 
> > do check xml:lang values, at least to the extent of making sure 
> > they're two letters and not three. Failing to do so is a 
> > well-formedness error because of Production 35.
> Oddly enough, this is not true.  Production 35 is not reachable from any
> other production,

I think you meant [33] (unless some erratum renumbered
the grammar productions).

>     and there is no "must" language in clause 2.12
> (except "must be declared in valid documents", which is not relevant).
> A document meets the technical definition of well-formedness in 
> clause 2.1 even if its xml:lang attribute values are crud.

Right, but 


says that validation must (at user option) provide a crud-alert.

- Dave

p.s. no, parsers aren't consistent on this point yet.
    I want to see agreement on WF-ness, too.

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