Re: Issue 630 in lilypond: non-synchronized grace note makes voiceOne go stems down

[lilypond]

Comment #18 on issue 630 by address@hidden: non-synchronized grace  
note makes voiceOne go stems down
http://code.google.com/p/lilypond/issues/detail?id=630

This commit does weird things to my scores - it changes the behaviour of  
\oneVoice so that it doesn't return to neutral directions; instead, it goes  
back to the previous \voice* setting:

\version "2.15.30"

\relative c''' {
  \voiceOne
  c2 \voiceTwo c2 \voiceOne
  << { c2 c  }
     \new Voice {
       \voiceTwo
       a2 a
     }
  >>
  \oneVoice %ends up as \voiceTwo
  c,,2 c
}