Issue 1519 in lilypond: StaffGrouper properties does not apply to "second level" StaffGroup

[lilypond]

Status: Accepted
Owner: ----
Labels: Type-Defect Priority-Medium

New issue 1519 by address@hidden: StaffGrouper properties does not  
apply to "second level" StaffGroup
http://code.google.com/p/lilypond/issues/detail?id=1519

%% Reported on LilyPond French Users mailing list
%%  
http://lilypond-french-users.1298960.n2.nabble.com/Arrangement-vertical-encore-une-petite-amelioration-tp5982503p5998593.html
%%
%% StaffGrouper  properties does not apply to "second level"  StaffGroup ,
%% i.e. when this  StaffGroup  is itself contained in an "upper level"
%%  StaffGroup  (or equivalent).
%% Of course the problem is the same for all "Staff-groups"
%% ( StaffGroup ,  ChoirStaff ,  PianoStaff ,  GrandStaff )
%%

\version "2.13.48"

\score {
 <<
   \new StaffGroup <<
     \new Staff {
       c'1
     }
     \new StaffGroup \with {
       % this has no effect because
       % this  StaffGroup  is contained within a  StaffGroup  (or  
equivalent)
       \override StaffGrouper #'staffgroup-staff-spacing #'basic-distance =  
#20
     } <<
       \new Staff {
         c'1
       }
       \new Staff {
         c'1
       }
     >>
     \new Staff {
       c'1
     }
   >>
 >>
}