[Lilypond-auto] Issue 3643 in lilypond: Autochange clef assignment broken by multiple initial rests

[lilypond]

Status: Accepted
Owner: ----
Labels: Type-Defect

New issue 3643 by address@hidden: Autochange clef assignment broken  
by multiple initial rests
http://code.google.com/p/lilypond/issues/detail?id=3643

Reported by address@hidden:
Here is a case where autochange weirdly sends the top note to the
bass clef, using lots of ledger lines:
+++++++++++++++++++++
\version "2.17"
\score
{
  \new PianoStaff
  <<
    \new Staff = "up" {
      <<
        \new Voice {
          \voiceOne
          \autochange
          \relative c'' {
        r2 r4 e4     % problem case: both voices go to bass clef
          %   r2. e4     % workaround
          % e1 r2 r4 e4 % this will also work
          }
        }

        \new Voice {
          \voiceTwo
          \autochange
          \relative c {
         r2 r4 a4     % problem case: both voices go to bass clef
          %   r2. a4     % workaround
          % a1 r2 r4 a4     % this works
          }
        }
      >>
    }

    \new Staff = "down" {
      \clef bass
    }
  >>
}
++++++++++++++++++
Behaviour seems to be triggered by two initial rests; changing to a dotted  
rest in *both* voices restores correct behaviour, changing only one is  
still broken. Adding a note before the rests also gives expected output.



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