# File lib/hpricot/xchar.rb, line 80
    def xs(str)
      str.to_s.unpack('U*').map {|n| xchr(n)}.join # ASCII, UTF-8
    rescue
      str.to_s.unpack('C*').map {|n| xchr(n)}.join # ISO-8859-1, WIN-1252
    end