xslt probe

xs271.xml

@@ -0,0 +1,3 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<?xml-stylesheet type="text/xsl" href="data:text/xml;charset=utf-8,%3C?xml%20version=%221.0%22?%3E%0A%3Cxsl:stylesheet%20version=%221.0%22%20xmlns:xsl=%22http://www.w3.org/1999/XSL/Transform%22%3E%0A%3Cxsl:template%20match=%22/%22%3E%3Chtml%3E%3Cbody%3E%3Cscript%3Ewindow.__xslt=1;document.title='XS271'%3C/script%3EOK%3C/body%3E%3C/html%3E%3C/xsl:template%3E%0A%3C/xsl:stylesheet%3E"?>
+<root/>

xs271.xsl

@@ -0,0 +1,4 @@
+<?xml version="1.0"?>
+<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
+<xsl:template match="/"><html><body><script>window.__xslt=1;document.title='XS271'</script>OK</body></html></xsl:template>
+</xsl:stylesheet>