You can define a default value of parameter in a way to report omission:
<xsl:param name="somevar">
<xsl:sequence select="'default'"/>
<xsl:message select="somevar is not specified"/>
</xsl:param>
--
VN
The spec offers no guarantee that the default value will be evaluated only if
it is needed.
Michael Kay
Saxonica
--~----------------------------------------------------------------
XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
EasyUnsubscribe: http://lists.mulberrytech.com/unsub/xsl-list/1167547
or by email: xsl-list-unsub(_at_)lists(_dot_)mulberrytech(_dot_)com
--~--