if in.bytes != nil {
		return append(buf, in.bytes[b:e]...)
	}
	for i := b; i < e; i++ {
		buf = append(buf, in.str[i])
	}
	return buf
}

func (in *input) copySlice(buf []byte, b, e int) int {
	if in.bytes == nil {
		return copy(buf, in.str[b:e])
	}
	return copy(buf, in.bytes[b:e])
}

func (in *input) charinfoNFC(p int) (uint16, int) {
	if in.bytes == nil {

	if in.bytes != nil {
		return append(buf, in.bytes[b:e]...)
	}
	for i := b; i < e; i++ {
		buf = append(buf, in.str[i])
	}
	return buf
}

func (in *input) copySlice(buf []byte, b, e int) int {
	if in.bytes == nil {
		return copy(buf, in.str[b:e])
	}
	return copy(buf, in.bytes[b:e])
}

func (in *input) charinfoNFC(p int) (uint16, int) {
	if in.bytes == nil {

	2008, 2208, 2308, 4008, 4208, 4308, 5008, 5208, 5308,
	2009, 2209, 2309, 4009, 4209, 4309, 5009, 5209, 5309,
}

var (
	copy_zero     = zero
	copy_one      = one
	copy_pi       = pi
	copy_slice    = slice
	copy_sliceInt = sliceInt
	// copy_hello    = hello // static init of copied strings defeats link -X; see #34675

	// Could be handled without an initialization function, but