R_API bool r_buf_append_buf(RBuffer *b, RBuffer *a) {
	r_return_val_if_fail (b && a && !b->readonly, false);
	ut64 sz = 0;
	const ut8 *tmp = r_buf_data (a, &sz);
	return r_buf_append_bytes (b, tmp, sz);
}
R_API bool r_buf_append_buf(RBuffer *b, RBuffer *a) {
	r_return_val_if_fail (b && a && !b->readonly, false);
	ut64 sz = 0;
	const ut8 *tmp = r_buf_data (a, &sz);
	return r_buf_append_bytes (b, tmp, sz);
}