XSUB
type = XSUB;
type = XSUB;
type = XSUB;
case XSUB:
if (type == XSUB) {
return XSUB;
state = c == '@' ? XNULLSUB : XSUB;
state = p[1] == '@' ? XNULLSUB : XSUB;
state = XSUB;