Re: Faulty extra beam with manual beam and cross-staff stems

[William Rehwinkel]

I can see "\autoBeamOff" pretty clearly here, which was the first link 
found from googling "lilypond cross-staff stems"

https://lilypond.org/doc/v2.25/Documentation/snippets/staff-notation_003a-cross-staff-stems

-will

On 8/1/23 15:22, Ole V. Villumsen via bug-lilypond wrote:
> Hi Jean,
> indeed. I retract my bug report.
> Your solution works in the case where I specify \crossStaff in the lower staff 
> (or both) and, as you say, the manual beams only in the upper staff.
> And no, this is pretty far from perfect and could also benefit from being made 
> clear in the NR.
> Cheers,
> Ole
>
> Sent with Proton Mail secure email.
>
> ------- Original Message -------
> On Tuesday, August 1st, 2023 at 20:46, Jean Abou Samra<jean@abou-samra.fr>  
> wrote:
>
>
> > Le mardi 01 août 2023 à 18:34 +0000, Ole V. Villumsen via bug-lilypond a écrit :
> >
> > > % Manual beams and cross-staff stems don’t seem to work together.
> > > % Expected result: Shared stems across staves; beams above notes in upper staff 
> > > only.
> > >
> > > % I have tried all possible combinations of specifying beams and \crossStaff in 
> > > the
> > > % upper staff, the lower one and both. I always get unwanted beams in the lower 
> > > staff.
> >
> > You should add \autoBeamOff in the lower staff, and remove the manual beams 
> > there.
> >
> > \version "2.25.7"
> >
> >
> > \layout {
> > \context {
> > \PianoStaff
> > \consists "Span_stem_engraver"
> > }
> > }
> >
> > \new PianoStaff <<
> > \new Staff \relative {
> > r8 e'[ e] r
> > r e e r |
> > r e[ e] r
> > r e[ e] r |
> > r e e r
> > r e[ e] r |
> > r e[ e] r
> > r e e r |
> > r e[ e] r
> > r2 |
> > }
> > \new Staff \relative {
> > \clef bass
> > \stemUp
> > \autoBeamOff
> > \crossStaff {
> > r8 g g r
> > r g g r |
> > r g g r
> > r g g r |
> > r g g r
> > r g g r |
> > r g g r
> > r g g r |
> > r g g r
> > r2 |
> > }
> > }
> >
> >
> >
> >
> > \crossStaff requires an explicit \autoBeamOff. I'm not saying that this is
> > the perfect user interface, but there is no bug here.
> >
> > Jean

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