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Whitespace character references and XSD normalization

• From: Mike Williams <mike.williams@g...>
• To: xml-dev@l...
• Date: Tue, 12 Sep 2006 16:52:17 +0100

Hi,

My question is, if an attribute value includes a non-space whitespace 
character reference, and the XSD for the attribute has the collapse 
whitespace facet, does the character reference get replaced with a space 
before any validation?  Or does the referenced non-space whitespace 
character remain after normalization?

 From a couple of days reading the XML specification, the various XSD 
specifications, and googling various email lists I have not found 
anything to point me to a clear answer.  The nearest I can get is the 
last two paragraphs of 3.1.4 in XSD Part 1 - Structures where it talks 
about performing 'it' twice. I think this is referring to the whitespace 
normalisation process, once as part of the XML parser as covered by 
3.3.3 attribute value normalisation (where the character reference is 
replaced with the referenced character) followed by whitespace 
normalisation according to the XSD by the XSP processor.

Is this interpretation of the specifications right?  Is there clearer 
statement of whitespace normalisation in the presence of non-space 
whitespace character references with an XSD processor?

TTFN

Mike
-- 
Good judgement comes from experience. Experience comes from bad judgement.

• Follow-Ups:
  • Re: Whitespace character references and XSD normalization
    • From: richard@i... (Richard Tobin)