RE: [xsl] sum function and math expressions

Subject: RE: [xsl] sum function and math expressions
From: "Michael Kay" <mike@xxxxxxxxxxxx>
Date: Fri, 8 Apr 2005 19:26:44 +0100
> Maybe the question should be reduced to:
> "What information is arguably lost in the identity transform?"
> Within the restricted world-view of XSLT, of course (which we 
> frequently 
> adopt happily) the answer is "nothing", insofar as 
> "information" is defined 
> as "that which has been expressed in an XML information set 
> (as implemented 
> by a conformant XSLT processor). An XSLT processor knows nothing of 
> anything else.

It's actually not quite "nothing".

- unparsed entities make it into the XSLT input but not into its output

- base URI is lost

- the isID and isIDREF properties of elements and attributes are lost (I
think - need to check)

Michael Kay

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