PianoStaff and StaffGroup brackets are truncating single line DrumStaff at top left of staff system.

[dfro]

Hi,

I want to create a StaffGroup that includes a single line Staff or 
DrumStaff at the top. I am having the problem that the left most measure 
bar line and the brackets of each staff system are being truncated down 
to the staff line of the single staff.

I have tried a workaround by making a second staff line and then hiding 
it using some code from a snippet. This causes the bar line and the 
bracket to extend the same as the other measures, but then measure 
repeat dots are not being centered around the single visible line, but 
are rather being centered between the visible line and the hidden line.

Is there a way to override this behavior with a single line staff at the 
top of a PianoStaff or StaffGroup - to get the leftmost bar line to be 
the same as normal bar lines, and to get the brackets to extend to the 
end of the leftmost bar line?

Thank you for any thoughts or ideas, and thank you for this wonderful 
software!

Peace,

David


Here is an example:


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

\version "2.18.2"

\new StaffGroup        %leftmost measure bar and group (or piano) 
bracket are being truncated down to the drum staff's single line.

<<
      \new DrumStaff \with {
            \override StaffSymbol.line-count = #1
            \override BarLine.bar-extent = #' (0 . 2.5)} %would like 
leftmost measure bar line and bracket to extend the same as second bar.
      {
            | c c c c
      }
      \new Staff \relative c' {
            | c c c c
      }
      \new Staff \relative c' {
            | c c c c
      }
>>

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