[Lilypond-auto] Issue 3542 in lilypond: Manual beaming corrupts slur placement in tablature

[lilypond]

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

New issue 3542 by address@hidden: Manual beaming corrupts slur placement in  
tablature
http://code.google.com/p/lilypond/issues/detail?id=3542

The following program generates the same output, once using manual beams,  
once using autobeaming.  While the autobeaming (I don't know whether it is  
actually active in TabStaff, though) does not cause any trouble, the manual  
beaming disrupts slur placement in tablature.

The problem is already present in 2.16.0 but remains in current master.   
Beaming exceptions are used to enforce the same beams without manual  
intervention.

\version "2.16.0"
guitarSolo = {
  \time 3/4
  \set Timing.beamExceptions = #'((end . (((1 . 8) . (4 2)))))
  <<
    {bes'2( aes'8-. r)} \\
    {r8 cis(-\tag #'beam [ b f'-\tag #'beam ]) <d f'>-. r}
  >>
  \bar "|."
}

\score {
  {
    \new StaffGroup <<
      \new Staff { \clef "treble_8" \guitarSolo }
      \new TabStaff \guitarSolo
    >>
    \removeWithTag #'beam
    \context StaffGroup <<
      \context Staff { \clef "treble_8" \guitarSolo }
      \context TabStaff \guitarSolo
    >>
  }
}


Attachments:
        badslur.ly  500 bytes
        badslur.preview.png  14.0 KB

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