# File lib/merb-core/dispatch/cookies.rb, line 81
    def set_cookie(name, value, options)
      options[:path] = '/' unless options[:path]
      if expiry = options[:expires]
        options[:expires] = expiry.gmtime.strftime(Merb::Const::COOKIE_EXPIRATION_FORMAT)
      end
      # options are sorted for testing purposes
      (@_headers['Set-Cookie'] ||=[]) << "#{name}=#{value}; " +
        options.map{|k, v| "#{k}=#{v};"}.sort.join(' ')
    end