Re: [xml-names] empty string namespace name

> > See http://www.w3.org/TR/2006/PER-xml-names-20060614/#dt-prefix,
> > which says "the namespace name may not be empty".  Of course, this
> > should be an RFC2119 "must not".

> And it should probably be noted as being a "Namespace Constraint" (NSC),  
> not?

Yes.  But since that text is unchanged from the first edition (rather
than being something we introduced in the new edition), I doubt we
would decide to change it between PER and REC.

-- Richard