Re: Issue 1031 in lilypond: constantly-changing input/regression/rest-collision-beam-note.ly

[lilypond]

Comment #19 on issue 1031 by n.puttock: constantly-changing  
input/regression/rest-collision-beam-note.ly
http://code.google.com/p/lilypond/issues/detail?id=1031

Joe, have you seen what this does to lyric-combine-switch-voice.ly?

programming error: cyclic dependency: calculation-in-progress encountered  
for #'Y-extent (NoteColumn)

          r8 f g
backtrace:
0: (#<Grob RestCollision > positioning-done #<primitive-procedure  
ly:rest-collision::calc-positioning-done>)
1: (#<Grob Rest > Y-offset #<simple-closure #<simple-closure  
(#<primitive-procedure ly:rest-collision::force-shift-callback-rest>  
#<simple-closure (#<primitive-procedure ly:rest::y-offset-callback>) >) > >)
2: (#<Grob NoteColumn > Y-extent #<primitive-procedure  
ly:axis-group-interface::height>)
3: (#<Grob TupletBracket > positions #<primitive-procedure  
ly:tuplet-bracket::calc-positions>)
4: (#<Grob TupletBracket > control-points #<primitive-procedure  
ly:tuplet-bracket::calc-control-points>)
5: (#<Grob TupletBracket > stencil #<primitive-procedure  
ly:tuplet-bracket::print>)
6: (#<Grob TupletBracket > Y-extent #<primitive-procedure  
ly:grob::stencil-height>)
7: (#<Grob VerticalAxisGroup > vertical-skylines #<primitive-procedure  
ly:hara-kiri-group-spanner::calc-skylines>)

I don't know why this doesn't show up in the test results between 2.13.24  
and 25, but it's popped up at random over the last few local regtest checks  
I've done.