matchoffprint(int off)
{
	switch (off)
	{
	case -2:
		printf("X");
		break;
	case -1:
		printf("?");
		break;
	default:
		printf("%d", off);
		break;
	}
}

static void
matchprint(regmatch_t* match, int nmatch, int nsub, char* ans, unsigned long test)
{
	int	i;

	for (; nmatch > nsub + 1; nmatch--)