-ADD_ACKNOWLEDGER (Slur_engraver,accidental);
-ADD_ACKNOWLEDGER (Slur_engraver,dynamic_line_spanner);
-ADD_ACKNOWLEDGER (Slur_engraver,fingering)
-ADD_ACKNOWLEDGER (Slur_engraver,note_column);
-ADD_ACKNOWLEDGER (Slur_engraver,script);
-ADD_ACKNOWLEDGER (Slur_engraver,text_script);
-ADD_ACKNOWLEDGER (Slur_engraver,tie);
+ADD_ACKNOWLEDGER (Slur_engraver, accidental);
+ADD_ACKNOWLEDGER (Slur_engraver, dynamic_line_spanner);
+ADD_ACKNOWLEDGER (Slur_engraver, fingering);
+ADD_ACKNOWLEDGER (Slur_engraver, note_column);
+ADD_ACKNOWLEDGER (Slur_engraver, script);
+ADD_ACKNOWLEDGER (Slur_engraver, text_script);
+ADD_ACKNOWLEDGER (Slur_engraver, tie);
+ADD_ACKNOWLEDGER (Slur_engraver, tuplet_number);