#4818 engraver-init.ly: guarantee no ledger lines in NullVoice

[Paul Morris]

engraver-init.ly: guarantee no ledger lines in NullVoice

for staves with custom line positions and ledger
lines that appear inside the staff.

http://codereview.appspot.com/297730043

[Paul Morris]

% For example:

\version "2.19.39"
\new Staff {
  \override Staff.StaffSymbol.line-positions = #'(-8 -6 6 8)
  \new NullVoice {
    % \override NullVoice.NoteHead.no-ledgers = ##t
    g''''1
  }
}

% Also affects \partcombine which combines identical 
% notes by moving one of them to a NullVoice:

\new Staff {
  \override Staff.StaffSymbol.line-positions = #'(-8 -6 6 8)
  \partcombine
  { g''''1 }
  { g''''1 }
}

[Anonymous]

Passes make, make check and a full make doc.

[Anonymous]

Patch on countdown for April 9th.

[Anonymous]

Patch counted down - please push.

[Paul Morris]

Pushed to staging.

[Thomas Morley]

Please always post commit id.
I'd add commit-description as well:

commit 1fe9ecabebaf686ebff62cc9b8e47bab43ff7b9e
Author: Paul Morris paulwmorris@gmail.com
Date: Sat Apr 2 13:10:35 2016 -0400

engraver-init.ly: guarantee no ledger lines in NullVoice

for staves with custom line positions and ledger
lines that appear inside the staff.

[Anonymous]

author Paul Morris paulwmorris@gmail.com
Sat, 2 Apr 2016 17:10:35 +0000 (13:10 -0400)
committer Paul Morris paulwmorris@gmail.com
Sun, 10 Apr 2016 19:07:24 +0000 (15:07 -0400)
commit 1fe9ecabebaf686ebff62cc9b8e47bab43ff7b9e