Grace note kicks tuplet number away

[Gilberto Agostinho]

Hi all,

When cross staffing, I found that sometimes a grace note in the middle of
the beam causes the tuplet number to move absurdly higher or lower:

\version "2.19.32"
\markup{"ugly"}
\autochange {
  \tuplet 7/4 { c,32[ c, c, \grace{ c,8 } c,32 c, c''' c,] } 
}
\markup{"pretty"}
\autochange {
  \tuplet 7/4 { c,32[ c, c, c, c, c''' c,] } 
}

producing:

<http://lilypond.1069038.n5.nabble.com/file/n184567/45.png> 

Strangely enough, the skyline isn't affected at all:

<http://lilypond.1069038.n5.nabble.com/file/n184567/40.png> 

Also, to show the dependency on the grace position, see:

\version "2.19.32"
\autochange {
  \tuplet 7/4 { c,32[ c, \grace{ c,8 } c,32 c, c, c''' c,] } 
  \tuplet 7/4 { c,32[ c, c, \grace{ c,8 } c,32 c, c''' c,] } 
  \tuplet 7/4 { c,32[ c, c, c, \grace{ c,8 } c,32 c''' c,] } 
}

producing:

<http://lilypond.1069038.n5.nabble.com/file/n184567/07.png> 

Does anyone know if is there a way of avoiding this issue?

Cheers,
Gilberto



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