[xsl] problem with fn:contains using xsl:param

[Piotr Dobrogost <pd@xxxxxxxxxxxxxxxxxxxxxxxxxx>]

Hi

I'm using Saxon-HE 9.2.0.3N to test XSLT 2.0 document I'm creating. The 
purpose of transformation is to generate Perl source code based on 
schema file.

I had this statement

<xsl:template match="xsd:element[contains(@type,'xsd:date') or 
contains(@type,'xsd:dateTime') or contains(@type,'xsd:bool')]">

which was working as expected and I wanted to refactor it to something 
like this

<xsl:param name="KnownXSDTypes">xsd:date xsd:dateTime xsd:bool</xsl:param>
(...)
<xsl:template match="xsd:element[contains($KnownXSDTypes, @type)]">

but after this change I'm getting different results. I don't see how the 
latter code could have different meaning than the former one.

Any ideas?


Regards
Piotr Dobrogost