Re: note head direction not automatically rearranged for two adjacent pitches when two voices are used instead of a chord

[Jean Abou Samra]

Le 24/05/2022 à 14:43, Jean Abou Samra a écrit :
> Le 24/05/2022 à 13:36, Soo Lee a écrit :
> > I isolated these notes to create a tiny example, but the context 
> > suggests that it makes more sense to view them as two voices. This is 
> > a Chopin piece and unlike e.g. Bach, two voices often are expressed 
> > like a chord. I wanted to avoid going back and forth between one 
> > voice and two voices too often.
> > I guess it is possible to just use a chord in this case. I'll try to 
> > think about other work-arounds. However, I think an ideal behavior 
> > would still be to automatically rearrange the note head direction in 
> > a case like this.
>
>
>
> I don't think this syntax is the right tool for your
> purpose. With \new Voice, you're telling LilyPond that
> you want separate voices. With \voiceOne and \voiceTwo,
> you specify stem directions for both voices. Then, with
> \stemUp, you kind of contradict what you just said. It's
> tricky for LilyPond to interpret this input. Rather, I
> suspect you want to use the part combining feature in
> order to merge notes in one single stem when the rhythm
> is the same.
>
> https://lilypond.org/doc/v2.22/Documentation/notation/multiple-voices.html#automatic-part-combining 
>
>
> Jean


To expand: consider

\version "2.22.2"

\new Staff <<
  \new Voice { \voiceOne g''8 8 8 8 }
  \new Voice { \voiceTwo \once \stemUp a,8 a'8 \once \stemUp a,8 a'8 }
>>


If the \stemUp made the stems merge, this use case would no longer work.

Jean