TabStaff.keepAliveInterfaces

[Malte Meyn]

Hi list,

what am I (or what is LilyPond) doing wrong here?

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\version "2.19.83"

bla = { \repeat unfold 100 e'4 }
git = {
  \set TabStaff.keepAliveInterfaces = #'()
  R1*10
  \repeat unfold 60 c'4
}

<<
  \new Staff \bla
  \new Staff \with { \RemoveAllEmptyStaves } \git
  \new TabStaff \with { \RemoveAllEmptyStaves } \git
>>

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

A stub for the first TabStaff is printed (clef and short staff lines). If I
• don’t \set TabStaff.keepAliveInterfaces or
• \set Staff.keepAliveInterfaces = #'() too
the TabStaff is hidden as expected. Seems like the \set TabStaff… partly 
revives the TabStaff from being hidden. But why does the \set Staff… 
have an effect at all?

Cheers,
Malte