Why error "The context item is not set", when the context is
not set, on something like this:
<xsl:value-of select="if (.) then 'a' else 'b'"/> How else
does one check if the context item is set?
There's no way to test whether the context item is currently set. I think
the only case where you can't tell statically is probably within a named
template. I think it's probably good practice for a named template to
declare a parameter:
<xsl:param name="target" select="."/>
and within the body of the template to refer to $target rather than ".". The
caller must then either pass over a context item, or set the value of
$target explicitly.
Michael Kay
http://www.saxonica.com/
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