Open (no3) chords in chordmode

[Christopher Meredith]

I've noticed this question asked here 6 or 7 years ago but have not been able to find a solution. I want to use a chord symbol for an open interval (G D) with no third. I have tried using g1^3 but the symbol still appears as "G." I'd like it to say "G (no3)." I tried to accomplish it using this snippet from the reference manual:


% modify maj9 and 6(add9)
% Exception music is chords with markups
chExceptionMusic = {
  <g d>1-\markup { \super "(no3)" }
}

% Convert music to list and prepend to existing exceptions.
chExceptions = #( append
  ( sequential-music-to-chord-exceptions chExceptionMusic #t)
  ignatzekExceptions)

musicScore = \context StaffGroup <<
   \new ChordNames \chordmode { \set majorSevenSymbol = "maj7"
                \set chordNameExceptions = #chExceptions
                g2^3 g4:m d:m/f g:m d:m c:m bes d1 d4:m bes f ees:/g d1 g2.^3 s4 s1 s1
                c2:m c4:m7 d:m bes2. c4:m7 d2.^3 d4:m g2:m d4:m/f g:m d1 g1^3
                }



But it does not seem to make a difference. Can anyone suggest a solution? Thanks!