}
ADD_ACKNOWLEDGER (Tab_tie_follow_engraver, slur);
ADD_ACKNOWLEDGER (Tab_tie_follow_engraver, glissando);
ADD_ACKNOWLEDGER (Tab_tie_follow_engraver, tab_note_head);
}
ADD_ACKNOWLEDGER (Tab_tie_follow_engraver, slur);
ADD_ACKNOWLEDGER (Tab_tie_follow_engraver, glissando);
ADD_ACKNOWLEDGER (Tab_tie_follow_engraver, tab_note_head);