tty__getspeed
el->el_tty.t_speed = tty__getspeed(&el->el_tty.t_ts);
if (tty__getspeed(&el->el_tty.t_ex) != el->el_tty.t_speed ||
tty__getspeed(&el->el_tty.t_ed) != el->el_tty.t_speed) {
static speed_t tty__getspeed(struct termios *);
el->el_tty.t_speed = tty__getspeed(&el->el_tty.t_ex);