This doesn't solve the problem. Look at the example. In the first system spacing is proper, but in the second, distance between 'b' and 'd' is 9 (should be 10.5).
=========
\version "2.17.96"
musicMusic = {
c'1 \break c'1
}
emptyMusic = {
R1 \break c'1
}
musicEmpty = {
c'1 \break R1
}
emptyEmpty = {
R1 \break R1
}
\score {
<<
\new StaffGroup \with { systemStartDelimiter = #'SystemStartBrace
\override StaffGrouper.staffgroup-staff-spacing.basic-distance = #10.5
} <<
\new PianoStaff \with {
\remove "Span_bar_engraver"
\remove "System_start_delimiter_engraver"
\override StaffGrouper.staffgroup-staff-spacing.basic-distance = #9
} <<
\new Staff \with {
instrumentName = #"a"
} \musicMusic
\new Staff \with {
instrumentName = #"b"
} \musicMusic
>>
\new Staff \with {
instrumentName = #"c"
\RemoveEmptyStaves
\override VerticalAxisGroup.remove-first = ##t
} \musicEmpty
>>
\new StaffGroup <<
\new Staff \with {
instrumentName = #"d"
} \musicMusic
\new Staff \with {
instrumentName = #"e"
} \musicMusic
\new Staff \with {
instrumentName = #"f"
} \musicMusic
>>
>>
}
=========
An ideal solution would be to have Keep_alive_together_engraver modified so
that it keeps_alive_together only selected staves in the group (not all). Then
we could do:
\score {
<<
\new PianoStaff \with {
\remove "Keep_alive_together_engraver"
\consist "Keep_alive_selected_together_engraver"
} <<
\new Staff \with { \RemoveEmptyStaves \KeepAlive } \upper
\new Staff \with { \RemoveEmptyStaves \KeepAlive } \lower
\new Staff \with { \RemoveEmptyStaves \override
VerticalAxisGroup.remove-first = ##t } \extra
>>
>>
}
Or alternatively to modify Keep_alive_together_engraver so that it doesn't keep
alive selected staves:
\score {
<<
\new PianoStaff \with {
\remove "Keep_alive_together_engraver"
\consist "Do_not_keep_alive_selected_together_engraver"
} <<
\new Staff \with { \RemoveEmptyStaves } \upper
\new Staff \with { \RemoveEmptyStaves } \lower
\new Staff \with { \RemoveEmptyStaves \override
VerticalAxisGroup.remove-first = ##t \DoNotKeepAlive } \extra
>>
>>
}
Without this we cannot build stable \PianoThreeStaff context.
Karol
1.pdf
Description: Adobe PDF document
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