Several cue bugs

[Koy Rehme]

> I'm not top posting.

I've discovered a set of bugs relating to the cue system.  I'll
be the first to admit that I'm experienced with lilypond -- this
could be from ignorance more than anything else

The following:

\version "2.10.33"

cues = \relative c'' {
  R1 | << { e4( f) } \\ { c2 } >> c2
}
\addquote cues \cues

part = \relative c' {
  R1 | \cueDuring #"cues" #1 { c1 }
}

\score {
  <<
    \new Staff = cues \cues
    \new Staff = part \part
  >>
}

As expected, the cues have a hard time working with the polyphony
and a quarter and half note are put on the same stem.  Less
expected, the slur is ignored.

Another problem is with unfolding repeats.  See the following:

cues = \relative c'' {
  \repeat volta 2 { R1 }
  \alternative {
    { e4 f g a }
    { e f g a }
  }
}
\addquote cues \cues

part = \relative c' {
  \repeat volta 2 { R1 }
  \alternative {
    \cueDuring #"cues" #UP { c1 }
    \cueDuring #"cues" #UP { c1 }
  }
}

\score {
  \unfoldRepeats { <<
    \new Staff = cues \cues
    \new Staff = part \part
  >> }
}

The cues exist properly without the unfolding and are correct in
the first ending.  The second ending, however, is missing the
cues.

Like I said, I may not know what I'm doing.  I've tried 2.11.36,
but I got an infinite loop at "Preprocessing graphical
objects..." -- more on that another time.

-- KR