--- a/libs/encodings.lua	Thu Oct 22 13:58:18 2020 +0100
+++ b/libs/encodings.lua	Thu Oct 22 15:27:22 2020 +0100
@@ -9,5 +9,8 @@
 idna = {};
 stringprep = {};
 base64 = { encode = mime.b64, decode = mime.unb64 };
+utf8 = {
+	valid = (utf8 and utf8.len) and function (s) return not not utf8.len(s); end or function () return true; end;
+};
 
 return _M;