Split chord across staves in cross-staff notation
1) The easiest way to explain what I'm looking for is to attach a file. Open the file and look at the eighth notes. (It may look like this capability already exists in Musescore, seeing as how I created the notation I was looking for. However, there is no supported way to achieve this notation. What is on the file is a workaround in which I inserted the eighth notes on the lower staff in a separate voice, then dragged the beam to overlap with the one above.)
This should work like cross staff beaming, except that, it there were multiple notes in one voice, you would not be forced to move all the notes in the voice; you could leave some on the top staff, and put some on the bottom staff.
2) In implementing this, it is important that we let it remain easy for the user to beam all the notes across staves if (s)he wants to (this is the current behavior). If item #1 were implemented, this would become more difficult (you would have to individually press Ctrl+Shift+Down/Up for each note of each chord). Therefore, I would suggest that it be possible to beam multiple notes across staves at the same time by selecting the notes, and then pressing Ctrl+Shift+Down/Up.
In a nutshell, here is what I'm proposing: the user should be able to select multiple notes, and then press Ctrl+Shift+Down/Up, and have every selected note move staves accordingly, AND every non-selected note stay in its current position. If there was a chord with only some notes of the chord selected, and the user pressed Ctrl+Shift+Down/Up, only those selected notes would move, stretching the stem to accommodate the move (as in the attachment).
|One voice across multiple staves.mscz