TTY_OPENED
if (c != NULL && (c->tty.flags & TTY_OPENED) && c->tty.term != NULL)
if (loop->tty.flags & TTY_OPENED)
if (loop->tty.flags & TTY_OPENED)
if (c->tty.flags & TTY_OPENED)
tty->flags |= TTY_OPENED;
if (tty->flags & TTY_OPENED) {
tty->flags &= ~TTY_OPENED;