# File lib/nokogiri/xml/node.rb, line 145 def xpath *paths return NodeSet.new(document) unless document paths, handler, ns, binds = extract_params(paths) sets = paths.map { |path| ctx = XPathContext.new(self) ctx.register_namespaces(ns) binds.each do |key,value| ctx.register_variable key.to_s, value end if binds ctx.evaluate(path, handler) } return sets.first if sets.length == 1 NodeSet.new(document) do |combined| sets.each do |set| set.each do |node| combined << node end end end end