System with SystemStartBar only in PianoStaff

[Urs Liska]

I need to engrave something like what is shown in the attached image: a score where the PianoStaff has a SystemStartBar but there is none between the top Staff and the PianoStaff. The example is simply created using two separate scores, but that is not an option because the single Staff has to be synchronized with the PianoStaff.

I tried several things so far, without success:

• In a \layout block \omit SystemStartBar from Score and \undo \omit it in PianoStaff (wouldn't have expected that to work ...)
• \remove System_start_delimiter_engraver from Score and \consist it to PianoStaff. This has the weird effect of printing two SystemStartBrace-s and no SystemStartBar

I suspect that the SystemStartBar is something that is inherently added to the Score, to connect *all* staves.

What most probably *would* work is remove the SystemStartBar completely then create a callback to an arbitrary grob, creating a "fake" SystemStartBar as a \markup \draw-line and move it to the start of the staff. I would probably manage doing that myself, but I would actually prefer a solution that is more semantically correct (i.e. modify the Score set-up configuration).

Any ideas?
Urs

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