diff --git a/util.js b/util.js
--- a/util.js
+++ b/util.js
@@ -31,7 +31,6 @@ function str2utf8(s){
 	let res=[];
 	let c=s.codePointAt(0);
 	for(let i=0;c!==undefined;i++,c=s.codePointAt(i)){
-		console.log(c);
 		if(c<0x80){res.push(c);}
 		else if(c<0x800){
 			res.push(0b11000000|(c>>>6));