I need this for an Ossia staff that only appears for a single bar, like this:
The real hairpin starts before that bar (like the 2nd one), but spanning the hairpin where the lower one starts doesn't look accurate, and there's the barline midways.
I know that it can be done with a white box in a markup, but I want to see first if anything like moving the starting points of the hairpin lines can be done, before I try rewriting some things for the Ossia staff.
Also, is there a way to put a text to the side of the Ossia staff that says "Ossia" just like an
instrumentName but not where the