# File lib/xml/xpath.rb, line 905
    def translate(from, to)
      to = to.split(//)
      h = {}
      from.split(//).each_with_index { |i,n|
        h[i] = to[n] unless h.key? i
      }
      @value = @value.gsub(/[#{Regexp.quote(h.keys.join)}]/) { |s| h[s] }
      self
    end