Re: [Lilypond-auto] Issue 2199 in lilypond: Mark_engraver in StaffGroup misplaces marks at top of Score

[lilypond]

Comment #8 on issue 2199 by address@hidden: Mark_engraver in  
StaffGroup misplaces marks at top of Score
http://code.google.com/p/lilypond/issues/detail?id=2199

A couple weeks ago I tried playing around with changing  
side-position-interface::move-to-extremal-staff to instead move to the  
topmost (i.e. first seen) staff collected by Staff_collecting_engraver. The  
result is bad alignment, and a warning that the StaffSymbol lacks the  
axis-group-interface, which is kinda true, since Staff_collecting_engraver  
collects StaffSymbols, not VerticalAxisGroups.

I guess the problem 4cabd230 is trying to solve is that grobs with  
side-position-interface need to be in the same axis-group as the grob they  
are positioned relative to (does this make any sense? I am unfamiliar with  
the grob positioning code, so I might be entirely misguided.) In that case,  
the "true" solution would probably be to get the Staff associated with the  
topmost StaffSymbol collected by Staff_collecting_engraver, fetch its  
VerticalAxisGroup (made by Axis_group_engraver), and assign the  
side-positioned grob to that in  
side-position-interface::move-to-extremal-staff. This sound like an idea I  
might try out if I'll have time...

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