partcombineChords affects preceding note, gives wrong output

[Pavel Roskin]

Hello!

Following code gives incorrect output:


\version "2.16.1"
soprano = {
  \partcombineApart g'8 \partcombineChords g'8
}
alto = {
  c'16 [ c'16 ] c'8
}
\score {
  \partcombine \soprano \alto
}


The first c'16 is drawn without a beam, the second c'16 has its beam  
attached to the subsequent chord and has its stem up.  It means that  
partcombineChords not only fails to produce the right output, but it  
affects the notes that precede it in time.

Replacing partcombineChords with partcombineAutomatic fixes the  
problem.  That's weird because partcombineChords is meant to make  
chords only, and it fails at that, whereas partcombineAutomatic is a  
more complicated mode, and it makes a good looking chord.

It would be a real problem when the parts are separated by more than  
an octave.  partcombineAutomatic would draw the notes separately.   
partcombineChords would be needed to produce a chord.

The problems exists both in the current development version and 2.16.1.

--
Regards,
Pavel Roskin

partcombine-stem-chord.png
Description: PNG image

partcombine-stem-auto.png
Description: PNG image