def for_host(host)
      if @dirty.include?(host)
        values = []

        cookies_for_host(host).each do |name,value|
          values << "#{name}=#{value}"
        end

        @cookies[host] = values.join('; ')
        @dirty.delete(host)
      end

      return @cookies[host]
    end
def for_host(host)
      if @dirty.include?(host)
        values = []

        cookies_for_host(host).each do |name,value|
          values << "#{name}=#{value}"
        end

        @cookies[host] = values.join('; ')
        @dirty.delete(host)
      end

      return @cookies[host]
    end
Returns the pre-encoded Cookie for a given host.

 @param [String] host
   The name of the host.

 @return [String]
   The encoded Cookie.

 @since 0.2.2