An experiment in adding a julian date XSLT extension function.
Makes the NulogyExtension.to_jd method available to Nokogiri xslt transformations.
Nokogiri::XSLT.register 'http://nulogy.com/extensions', NulogyExtension
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:nu="http://nulogy.com/extensions" extension-element-prefixes="nu">
<xsl:template match="submitted_on">
<result><xsl:value-of select="nu:to_jd(text())"/></result>
</xsl:template>
</xsl:stylesheet>