Re: crossStaff beaming not connecting both staves

[Malte Meyn]

Am 28.09.2016 um 00:01 schrieb Malte Meyn:
> \version "2.19.47"
>
> \new PianoStaff \with {
>   \consists #Span_stem_engraver
> } <<
>   \new Staff { a\harmonic }
>   \new Staff { \crossStaff a }
> > >
>
> This looks like a Span_stem_engraver bug to me: The NoteHeads don’t
> share a stem because of the different note head styles (two regular note
> heads → ok, two harmonic note heads → ok, example above → fail). This is
> neither a general chord problem nor a HarmonicEvent problem:
>     { <a a'\harmonic> }
> works fine and
>     \override NoteHead.style = #'harmonic a
> fails the same way
>     a\harmonic
> does.

I found a workaround: you can print the harmonic note heads twice; once 
with default style but hidden and once with #'harmonic style. The span 
stems will connect to the hidden note heads. I \omitted some things that 
would otherwise be printed twice, maybe you’ll need here some more.

\version "2.19.47"

\new PianoStaff \with {
  \consists #Span_stem_engraver
} <<
  \new Staff {
    <<
      {
        \hide NoteHead
        a16 b c' d'
      }
      \new Voice {
        \override NoteHead.style = #'harmonic
        \override NoteColumn.ignore-collision = ##t
        \omit Stem
        \omit Beam
        \omit Flag
        \omit Dots
        a16 b c' d'
      }
    >>
  }
  \new Staff {
    \autoBeamOff
    \crossStaff {
      a16 b c' d'
    }
  }
>>