Saxon vs. Xalan - output not the same

Apologies if this comes twice -- I had an error on my end and can't tell if
it got out the first time.

Hi all,
I have this bit of XSL:

<xsl:template match="tight">
.BR <xsl:value-of select="." /><xsl:text/>
<xsl:choose>
<xsl:when test="position() != last()">, </xsl:when>
<xsl:when test="position() = last()">. </xsl:when>
</xsl:choose>
</xsl:template>

that matches this bit of XML:
<tight><link>mget</link></tight>
<tight><link>medit</link></tight>

--gk
Greg Kushmerek
Sr. Technical Writer
IA/Tools
The MathWorks
(+1) 508-647-7136