Re: Mid-piece NullVoice creating?

[Simon Albrecht]

Am 10.09.2015 um 14:02 schrieb David Kastrup:
> Simon Albrecht <address@hidden> writes:
>
> > Am 10.09.2015 um 13:30 schrieb David Kastrup:
> > > Here is a clue what is really happening.
> > > Issue 4579, committed rather recently, tries explaining this phenomenon
> > > somewhat more accurately than before and describes a remedy.
> > Sorry, but did I correctly figure out the remedy you describe?
> >
> > %%%%%%%%%%%%%
> > music = {
> >    1
> > }
> >
> > \score {
> >    {
> >      <<
> >        \new Staff \with { \override StaffSymbol.color = #red } <<
> >          \new NullVoice \music
> >          \new Voice \music
> >        >>
> >      >>
> >      \break
> >      \new GrandStaff <<
> >        \new Staff <<
> >          %        \new NullVoice \music
> >          \new Voice \music
> >        >>
> >        \new Voice \music
> >      >>
> >    }
> > }
> > %%%%%%%%%%%
> >
> > This also has a spurious staff in the second system, but black… ?
> Well, \break is defined as an event, and events need a bottom context.
> There no longer is one, so it creates its own one.  So you need
> something like
> <<
>     << { \new Staff ... \break } >>
>     \new GrandStaff ...
> or move the \break into the \new Staff somewhere.

That’s it. Thanks a lot for the explanations.

Yours, Simon