Re: How To Selectively Show a Staff

[Jean Abou Samra]

Le 18/10/2020 à 17:40, Marc Shepherd a écrit :

In a score where "RemoveAllEmptyStaves" is set, a staff will normally not show in a system where it has all rests.

Sometimes, you may want a staff (temporarily) to appear on a specific system, even though it contains all rests. What’s the command or setting to do this?

--

Marc Shepherd

    Hi,

Well, I can't explain the output of:

\version "2.23.0"

showIt = \set Staff.keepAliveInterfaces = #'(rest-interface)
hideIt = \unset Staff.keepAliveInterfaces

\new Score \with \RemoveAllEmptyStaves
<<
  {
    R1 R1 R1 \break
    R1 R1 R1 \break
    \showIt
    R1 R1 R1 \break
    \hideIt
    R1 R1 R1 \break
    R1 R1 R1 \break
  }
  {
    \repeat unfold 15 { c'1 }
  }
>>

I would expect just the third staff to be shown, but in fact the second and the fourth are also printed.

Do folks here think this is a bug? Am I missing something?

Anyway, there is this workaround:

\version "2.23.0"

\new Score \with \RemoveAllEmptyStaves
<<
  {
    R1\break
    << { \oneVoice R1 } \\ { \once \hideNotes c'1 } >> \break
    R1\break
  }
  {
    \repeat unfold 3 { c'1 }
  }
>>

Regards,
Jean