R_API st64 r_buf_append_string(RBuffer *b, const char *str) {
	r_return_val_if_fail (b && str && !b->readonly, false);
	return r_buf_append_bytes (b, (const ut8 *)str, strlen (str));
}
R_API st64 r_buf_append_string(RBuffer *b, const char *str) {
	r_return_val_if_fail (b && str && !b->readonly, false);
	return r_buf_append_bytes (b, (const ut8 *)str, strlen (str));
}