When using XSLT 1.0 I got various error messages with the
above syntax.
XPath error : Invalid expression
if (exists($ig)) then $ig/length else 0
^
Yes, sorry, I'm very out of practice with writing 1.0 code. You have to
expand the XPath if()then ...else to an XSLT xsl:choose. The exists()
function can often be replaced with boolean() or just omitted
<xsl:choose>
<xsl:when test="$ig">
<xsl:value-of select="$ig/length"/>
</xsl:when>
<xsl:otherwise>0</xsl:otherwise>
</xsl:choose>
or there's often a less verbose way, as you say here using string-length.
Michael Kay
http://www.saxonica.com/
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