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

[Ole V. Villumsen]

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

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------- 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