tty_acs_needed
int tty_acs_needed(struct tty *);
if (tty_acs_needed(tty)) {
if ((gc->attr & GRID_ATTR_CHARSET) && tty_acs_needed(tty))
if ((changed & GRID_ATTR_CHARSET) && tty_acs_needed(tty))
if (tty_acs_needed(tty)) {
if (tty_acs_needed(tty))