only need to dupe string for zalgo if zerowidth present

skulduggery.go

@@ -70,8 +70,17 @@ func unpucker(s string) string {
 		return string(x)
 	}
 	s = re_alltheshitz.ReplaceAllStringFunc(s, fixer)
-	x := make([]byte, 0, len(s))
+
 	zw := false
+	for _, c := range s {
+		if runewidth.RuneWidth(c) == 0 {
+			zw = true
+			break
+		}
+	}
+	if zw {
+		x := make([]byte, 0, len(s))
+		zw = false
 		for _, c := range s {
 			if runewidth.RuneWidth(c) == 0 {
 				if zw {
@@ -86,3 +95,5 @@ func unpucker(s string) string {
 		}
 		return string(x)
 	}
+	return s
+}