partCombine Issues Warnings When Divisi Begins Within Tied Notes

<[email protected]>
Newsgroups gmane.comp.gnu.lilypond.bugs
Message-ID <[email protected]>
Issuing a \partCombineApart between two tied notes results in a warning that
the tie is unterminated and omits the tie from the printed score.  Printing
the top part by itself creates the tie without issues.

 

Omitting the tie from the top part as a workaround moves the divisi notation
backwards one note to include the first tied note.
PartCombineWarning.ly (text/lilypond-source, 902 B)
\version "2.24.3" \language "english"

% \partCombine does not handle divisi (\partCombineApart) that
%  begins inside two tied notes. Gives warning: unterminated tie
%  and does not tie the notes together.  Top part printed alone
%  does not trigger this problem (second line).
%
%  Workarounds that change the tie to a slur or omit the tie in
%  the top part but retain in the bottom part moves the divisi
%  back one note to begin on the first e natural.

FlautoTwoVI =
  \relative c'' {\clef treble \time 12/8 \key e \minor
  gs8 fs es es4 e8~
  \partCombineApart e^\markup{\small\italic "Flauto II"} d e as b cs
 }
  
ViolinoTwoVI =
  \relative c'' {\clef treble \time 12/8 \key e \minor
  gs8 fs es es4 e8~
  e_\markup{\small\italic "Violino II"} d cs as' b cs
 }
  
\score {
 \new Staff
  <<
  \set Staff.aDueText = #""
  \partCombine \FlautoTwoVI \ViolinoTwoVI
  >>
}

\score {
  \FlautoTwoVI
}
PartCombineWarning.png (image/png, 207.5 KB) - not displayed
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