\new Staff {
\key c \minor
< es' g' > < bes' d''~ >2. |
\tuplet 3/2 \voices "",2 << { \voiceOne d''4 c'' es'' \oneVoice } \\
{ g'4 as'2 } >>
< f' as' >4 <es' g'> |
}
Admittedly, this is still better than the warning and crash an earlier version rather than current master puts out.
But now there is neither warning nor crash. -- David Kastrup
