Re: p:option not required without default value

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Innovimax SARL writes:


> [[
> If an optional parameter has no select  attribute and has an empty
> sequence constructor, and if there is no as attribute, then the
> default value of the parameter is a zero length string.
> ]]

Yeah, but that's because its content is interpreted as a sequence
constructor, and in XSLT 1.0 it was a content spec., which defaulted
to the empty string, and so the above is for backwards compatibility.
p:option is necessarily empty.  The fact that uninitialised variables
and parameters are the empty string is a big source of bugs in XSLT,
in my experience.

ht
- -- 
       Henry S. Thompson, School of Informatics, University of Edinburgh
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