R_API bool r_buf_prepend_bytes(RBuffer *b, const ut8 *buf, ut64 length) {
	r_return_val_if_fail (b && buf && !b->readonly, false);
	return r_buf_insert_bytes (b, 0, buf, length) >= 0;
}
R_API bool r_buf_prepend_bytes(RBuffer *b, const ut8 *buf, ut64 length) {
	r_return_val_if_fail (b && buf && !b->readonly, false);
	return r_buf_insert_bytes (b, 0, buf, length) >= 0;
}