-ADD_ACKNOWLEDGER(Stanza_number_align_engraver,lyric_syllable);
-ADD_ACKNOWLEDGER(Stanza_number_align_engraver,stanza_number);
+ADD_ACKNOWLEDGER (Stanza_number_align_engraver, lyric_syllable);
+ADD_ACKNOWLEDGER (Stanza_number_align_engraver, stanza_number);
+