Whiteout attached to NoteHead

[James Worlton]

Hello,

I'm trying to get the whiteout that is attached to the NoteHead to not 
cover the ledger line. Also, it would be ideal if I could extend the 
width of the whiteout to the width of the ledger lines.

The code below gives the output shown in the attached image. I've tried 
substituting Staff.LedgerLineSpanner in place of the NoteHeads in the 
code--hoping to solve both issues--but it does not work.

Any hints would be greatly appreciated.

\version "2.19.6"

\score {
  \new Staff {
    \time 3/4
    << { \voiceOne
         r4 c'''2~
       } \new Voice
       { \voiceTwo
         r4 r8
         \override NoteHead.layer = #2
         \once \override NoteHead.whiteout = ##t
         f'''8 d'''4
    } >> \oneVoice
    c'''2.
  }
}

Thanks,
James Worlton

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