Issue 1570 in lilypond: Fixes accidental suggestions in the beam collision engraver

[lilypond]

Status: Accepted
Owner: ----
Labels: Type-Defect Priority-Critical regression Patch-review

New issue 1570 by address@hidden: Fixes accidental suggestions in  
the beam collision engraver
http://code.google.com/p/lilypond/issues/detail?id=1570

Per Mike Solo:
A bug just hit the French list.  It seems like a critical regression.

\score {             %avec "surcharge" des ligatures double croches  
allongées
   \new Staff {
 \time 2/2
 \set suggestAccidentals = ##t
g'4 fis'8 [  g'8 ]  a'8 [  g'8 a'16 g'16  fis'!16 e'16 ]   |
d'1
    }

}
\score {         %sans "surcharge" des ligatures : bon
       \new Staff {
 \time 2/2
 \set suggestAccidentals = ##t
g'4 fis'8   g'8   a'8   g'8 a'16 g'16  fis'!16 e'16    |
d'1
    }

}

Mike has proposed a patch on reitveld:  
http://codereview.appspot.com/4271054/
The patch compiles and passes reg tests.