static int incclass(Reclass *cc, Rune c)
{
	Rune *p;
	for (p = cc->spans; p < cc->end; p += 2)
		if (p[0] <= c && c <= p[1])
			return 1;
	return 0;
}
static int incclass(Reclass *cc, Rune c)
{
	Rune *p;
	for (p = cc->spans; p < cc->end; p += 2)
		if (p[0] <= c && c <= p[1])
			return 1;
	return 0;
}