Your example doesn’t work because the bars between the staves are in fact not
BarLine grobs, but SpanBar grobs, and they would live in the ChoirStaff context.
The difference between a ChoirStaff and a StaffGroup is that the Choirstaff
doesn’t contain the Span_Bar_Engraver, that creates them. You would need to
include the engraver in the ChoirStaff (essentially making it a StaffGroup),
\omit the SpanBars you don’t need (all the others) and make just the one you
need visible, like:
\new ChoirStaff \with {
\consists Span_bar_engraver
\omit SpanBar }
<<
\new Staff {
c''1 b'
\once \revert ChoirStaff.SpanBar.stencil
a' }
\new Staff {
\clef bass
a1 g f }
>>
> 8 feb. 2023 kl. 16:12 skrev Johannes Roeßler <[email protected]>:
>
> Hi Group,
>
> how can I add a visible (in the sense of connecting all staffs) barline in a
> choirstaff?
>
> I tried \once \override Staff.BarLine.transparent = ##f \bar "|"
>
> but o course it doesn't work, for its just in a staff...
>
> Best regards
> Johannes
>
>
