Bar lines at beginning of a line

[Boris Lau]

Hello,

For writing leadsheets that consist of chords and rhythm, I'd like to 
have single-line systems, which I achieve using this code:

  \new DrumStaff \with{
     drumStyleTable = #percussion-style
     \override StaffSymbol #'line-count = #1
     }
   {
     \override Staff.BarLine #'bar-size = #3
     \override Score.RehearsalMark #'font-size = 1
    ...
   }

However, I'd like to have the clef disappear, which I can do using 
\remove Clef_engraver, but now I want to have a bar-line at the 
beginning of each line.


I thought it would be quite natural if this would do the job:
\override Staff.BarLine #'break-visibility = #'#(#t #t #t)

but it doesn't. Do I have to use system start delimiters as a workaround 
in this case? How can I get these for a Staffgroup that only consists of 
ChordNames and the above DrumStaff?

Thanks for any help,
Boris

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Boris Lau
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