# File estraierpure.rb, line 54
    def add_attr(name, value)
      Utility::check_types({ name=>String, value=>String }) if $DEBUG
      name = name.gsub(/[ \t\r\n\v\f]+/, " ")
      name = name.strip.squeeze(" ")
      value = value.gsub(/[ \t\r\n\v\f]+/, " ")
      value = value.strip.squeeze(" ")
      @attrs[name] = value
      nil
    end