[xsl] XPath 1.0 issue

[Jack Matheson <jack@xxxxxxxxxxxxxx>]

Xalan and Saxon both allow an arbitrary number of space characters 
between the parenthesis in a node test, and I was
wondering if this is technically legal in XPath 1.0.

An example would be:
<xsl:apply-templates select="node(      )"/>

The XPath TR specifically states that whitespace can exist between 
tokens, but I'm not exactly sure how "token" is defined after reading 
the recent thread concerning "$       varname".

A node test in the XPath TR is defined as:

[7]      NodeTest   ::=  NameTest
                                  | NodeType '(' ')'
                                  | 'processing-instruction' '(' 
Literal ')'

Can anyone explain this to me?