156 		for k, v in pairs(t.attr) do if type(k) == "string" then attr_string = attr_string .. s_format(" %s='%s'", k, xml_escape(tostring(v))); end end

   156 		for k, v in pairs(t.attr) do if type(k) == "string" then attr_string = attr_string .. s_format(" %s='%s'", k, xml_escape(tostring(v))); end end

   157 	end

   157 	end

   158 	return s_format("<%s%s>", t.name, attr_string);

   158 	return s_format("<%s%s>", t.name, attr_string);

   159 end

   159 end

   160 

   160 

   161 function stanza_mt.__add(s1, s2)

   167 function stanza_mt.__add(s1, s2)

   162 	return s1:add_direct_child(s2);

   168 	return s1:add_direct_child(s2);

   163 end

   169 end

   164 

   170 

   165 

   171