Debugging shapeII

[Simon Albrecht]

Hello,

I’m sorry I have to come again with a question concerning shapeII, and 
with a not very tiny example.
Please have a look at the attachment:
– The slur _before_ the revert (be it through \revert or synonymously 
through \tweak) is oddly displaced.
– Using \shapeII (I think only the override-like form is affected) 
thoroughly confuses staff-staff-spacing, shifting the lower staff into 
the system below.

I don’t quite know where to search…

TIA, Simon

debug.ly
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debug.png
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shapeII.ily
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