PathExpr

# File lib/rexml/parsers/xpathparser.rb, line 511
      def PathExpr path, parsed
        path =~ /^\s*/
        path = $'
        n = []
        rest = FilterExpr( path, n )
        if rest != path
          if rest and rest[0] == //
            return RelativeLocationPath(rest, n)
          end
        end
        rest = LocationPath(rest, n) if rest =~ /\A[\/\.\@\[\w*]/
        parsed.concat(n)
        return rest
      end