Subject: Re: [xsl] Saxon output unused namespace declarations From: Michael Ludwig <mlu@xxxxxxxxxxxxx> Date: Thu, 23 Jul 2009 11:22:52 +0200 |
I am wondering why the namespace declaration for xmlns:xs is outputted. This namespace declaration is not used by the out element. So, from my opinion, to make the output as simple as possible, the XSLT 2.0 processor shall not output such declaration.
Yes, but the namespace is present in the instruction tree (the XSL document), so it is copied to the output - who knows in what weird way the (XML) output might need the namespaces to be present? Imagine the output is something like:
<Constraint type="xs:decimal"/> <Constraint>xs:decimal</Constraint>
The QName may not appear in markup, but it appears in element or attribute content; so it is okay for the XML parser if there is no namespace declaration - but it might not be okay for the application processing that document.
Take XSLT and XSD as examples of XML applications that use QNames in content.
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