class REXML::Parsers::XPathParser

def MultiplicativeExpr path, parsed
  n = []
  rest = UnaryExpr( path, n )
  if rest != path
    while rest =~ /^\s*(\*| div | mod )\s*/
      if $1[0] == ?*
        n = [ :mult, n, [] ]
      elsif $1.include?( "div" )
        n = [ :div, n, [] ]
      else
        n = [ :mod, n, [] ]
      end
      rest = UnaryExpr( $', n[-1] )
    end
  end
  if parsed.size == 0 and n.size != 0
    parsed.replace(n)
  elsif n.size > 0
    parsed << n
  end
  rest
end