ip.t_iflag |= IUCLC; ip.t_oflag |= OLCUC; ip.t_lflag |= XCASE;
ip->t.c_iflag |= IUCLC; ip->t.c_oflag |= OLCUC; ip->t.c_lflag |= XCASE;
f_lcase(ip)	struct info *ip;{	if (ip->off) {		ip.t_iflag &= ~IUCLC;		ip.t_oflag &= ~OLCUC;		ip.t_lflag &= ~XCASE;	} else {		ip.t_iflag |= IUCLC;		ip.t_oflag |= OLCUC;		ip.t_lflag |= XCASE;	}	ip->set = 1;}