Re: Removing empty systems/groups

[Eluze]

Alex Voice wrote
> Hi Lilypond Experts,
> 
> In a small orchestral score that incorporates an intermittent chorale-like
> string quartet, I'd like to have all staves showing at the start (I think
> I've worked that bit out), but thereafter remove the quartet StaffGroup
> from
> the score unless one or more of the parts of the quartet is playing, in
> which case I would like to see all four parts of the quartet (even if
> their
> staves are empty) ­ just for ease of following.

I think this is handled by the  /Keep_alive_together_engraver/

in your example, add:
\layout {
  \context {
    \GrandStaff
    \consists Keep_alive_together_engraver
} }

hth
Eluze



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