# File lib/kwartz/binding/rails.rb, line 213
    def add_directive_attr_as_option(d_arg, attr_info, attr_name)
      if (s = attr_info[attr_name]) && !d_arg.index(attr_name)
        d_arg << ", " unless d_arg.empty?
        d_arg << "'#{attr_name}'=>#{quote(s)}"
      end
    end