<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

<xsl:decimal-format xmlns:testns="urn:test:1" name="testns:format" decimal-separator=","/>
<xsl:decimal-format xmlns:newns="urn:test:1" name="newns:format" decimal-separator="."/>

</xsl:stylesheet>