cross-staff bug?

[David Nalesnik]

Hi,

Attempting to put dynamics above cross-staff notes using the code below leads to some awful collisions.  I've recast my example in three ways, to no avail.

In the first example, besides the collisions, the final stem is reversed and I get a number of programming errors:  "Grob direction requested while calculation in progress."  (See attached for image.)

The second still has collisions and throws the programming error "My pure_y_common is a VerticalAlignment, which might contain several staves."

The third throws no errors, but the collisions are still there.

I could of course use overrides to move objects out of the way, but I'd much rather learn that I'm doing something wrong, recast the example, and let LilyPond handle placement for me.

(To the suggestion that I simply put the dynamics below rather than above: this won't always work in the piece I'm engraving.)

Thanks,

David

%%%%%%%%%%%%%%%%%%

\version "2.19.10"

up = \change Staff = "up"

dn = \change Staff = "down"

\new PianoStaff <<

  \new Staff = "up" {

  s8*7^\p^\< s8^\f

  }

  \new Staff = "down" {

    e'8[( \up b' \dn g' \up d'' \dn b' \up f'' \dn d'' \up a''\marcato\fermata])

  }

>>

\new PianoStaff <<

  \new Staff = "up" {

    s1

  }

  \new Staff = "down" {

    e'8[(^\p^\< \up b' \dn g' \up d'' \dn b' \up f'' \dn d'' \up a''\marcato\fermata^\f])

  }

>>

\new PianoStaff <<

  \new Dynamics {

    s8*7^\p^\< s8\f

  }

  \new Staff = "up" {

    s1

  }

  \new Staff = "down" {

    e'8[( \up b' \dn g' \up d'' \dn b' \up f'' \dn d'' \up a''\marcato\fermata])

  }

>>

%%%%%%%%%%%%%%%%%%%%%%%%

cross-staff-bug.png
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