XSLT/XPath Reference: XSLT elements, EXSLT functions, XPath functions, XPath axes set:has-same-node() determines whether two node-sets have any nodes in common. Syntax set:has-same-node(nodeSet1, nodeSet2) Arguments nodeSet1 The first node set to check. nodeSet2 The second node set to check. Returns true if the two node-sets have any nodes in common; otherwise false. Defined EXSLT - SET:HAS-SAME-NODE Gecko support Supported in Gecko 1.9 and later.