disappearing-staff-lines

[Erik Sandberg]

Hi,

I added this to the bug cvs:

%important
address@hidden
\header { texidoc = "
In the following example, no staff lines and no beams are printed.

No warning message is given.
"
}
\version "2.2.2"
\header {title = "x" }

\score {
  <<
    \context Staff = A \notes r1 
    \context Staff = B \new Voice \notes \relative c {
        \change Staff=A b8[
        \change Staff=B b] 
        \change Staff=A b[ b] 
      }
  >>

  \paper {}
}