Re: Bug? Lines disappear with rhythmic staff

[M Watts]

Peter Chubb wrote:
> I'm using the current 2.12.2 version of lilypond.  The attached file
> yields,
>    programming error: vertical alignment called before line-breaking
> and no lines on the staff.
>
> If I remove the \bar "|." the output is correct.
>
> \version "2.12.2"
> recscore=  \context StaffGroup <<
>     \context RhythmicStaff = "tambour" {
>       \override NoteHead   #'style = #'cross
>       \stemUp
> 	f4 f8 f8 
>     }
>     \context Staff = "recA" {
>       \clef "G^8"
>       a''2
>       \bar "|."
>     }
>     >>
>
>
> \score {
> \recscore
>  \layout {
>     \context{ \RhythmicStaff
>               \remove "Time_signature_engraver"
>               \remove "Staff_symbol_engraver"
>               \remove "Clef_engraver"
> %             \remove "Bar_engraver"
>               \consists "Instrument_name_engraver"
>               \override BarLine #'transparent = ##t
>             }
>     \context{ \Staff
>               \remove "Time_signature_engraver"
>             }
>
>   }
> }
>   

For me, with 2.12.2 on Fedora 10, running your example yields tiny staff 
lines before the clef, but nothing after, and no StaffGroup bracket.

You seem to have removed the Staff_symbol_engraver from the RythmicStaff 
context -- I left the \bar "|." in, and commented out the line

%  \remove "Staff_symbol_engraver"

, then all worked fine.