terminal_mute
terminal_mute(tm, 1);
terminal_mute(tm, 0);
terminal_mute(vd->vd_curwindow->vw_terminal, 1);
terminal_mute(vd->vd_curwindow->vw_terminal, 0);
terminal_mute(tm, 1);
terminal_mute(tm, 0);
terminal_mute(tm, 1);
terminal_mute(tm, 0);
void terminal_mute(struct terminal *tm, int yes);