[Lilypond-auto] Issue 4028 in lilypond: Automatic beaming of grace notes inhibits beam subdivision

[lilypond]

Status: Accepted
Owner: ----
Labels: Type-Ugly

New issue 4028 by address@hidden: Automatic beaming of grace  
notes inhibits beam subdivision
http://code.google.com/p/lilypond/issues/detail?id=4028

In the example below, the first group of beamed notes is incorrectly  
beamed: this seems to be caused by the automatic beaming logic got grace  
notes: beaming them manually, or only a single grace note causes the  
problem to disappear.  Subsequent beams work OK.

music = \new Staff {
  \time 2/4

  \set subdivideBeams = ##t
  \set baseMoment = #(ly:make-moment 1/8)
  \set beatStructure = #'(2 2)

  \relative e' {
    \tuplet 3/2 {\grace {c16  d} e8 f16} g16 a16  b8 b |
    \tuplet 3/2 {\grace {c,16 d} e8 f16} g16 a16  b8 b |
  }
}

\score {
  \music
}


Attachments:
        SubBeam.png  5.3 KB

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