}

func appendString[Bytes []byte | string](dst []byte, src Bytes, escapeHTML bool) []byte {
	dst = append(dst, '"')
	start := 0
	for i := 0; i < len(src); {
		if b := src[i]; b < utf8.RuneSelf {
			if htmlSafeSet[b] || (!escapeHTML && safeSet[b]) {
				i++
				continue
			}
			dst = append(dst, src[start:i]...)
			switch b {
			case '\\', '"':
				dst = append(dst, '\\', b)
			case '\b':