Even more partcombine..

[Erik Sandberg]

The second bar of the first staff is identical to the first bar of the second 
staff, yet they are typeset differently. The first staff switches between 
chord and polyphony notation too often.

\score {
 <<\new Staff \notes {
\partcombine
  \relative c'' {r1 e8 f ~ f d}
  \relative c' {c4 c c c e8 f~f d }
 }
 \new Staff \notes {
\partcombine
  \relative c'' {e8 f~f d}
  \relative c' {e8 f~f d }
 }>>
  \paper{}
}

Erik