[Lilypond-auto] [LilyIssues-auto] [testlilyissues:issues] #5389 Partcombine: partcombine warns erroneously for unterminated slur

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A simple solution would be to go back to using Devnull for the part combiner's "null" Voice context; however, for it to work properly, Staff would need to accept Devnull as a child. Devnull should perhaps be added as an acceptable child of everything that accepts Voice and NullVoice. I'm having trouble imagining unintended consequences of that.

The dissatisfying thing about it would be having two kinds of null voice contexts: one nominally-null voice context called NullVoice and one even-nuller voice context called Devnull.

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[issues:#5389] Partcombine: partcombine warns erroneously for unterminated slur

Status: New
Created: Thu Jul 19, 2018 12:58 PM UTC by pkx166h
Last Updated: Wed Jul 25, 2018 12:39 AM UTC
Owner: Dan Eble

Good morning,

I've been reading up on partcombine recently and I wanted to try out a few examples from the documentation to help me really understand the command, however I get this error with one example:

From:

http://lilypond.org/doc/v2.19/Documentation/notation/multiple-voices#automatic-part-combining

Error:

warning: unterminated slur r2 g'4( f8 e) |

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I have not modified the code at all, just copy and paste.

I thought it was due to some voice-issue but I can't figure out how to fix. Thanks for any help.

Code:

musicUp = \relative c'' {
  \time 4/4
  a4 c4.( g8) a4 |
  g4 e' g,( a8 b) |
  c b a2.
} % begin verbatim

musicDown = \relative c'' {
  g4 e4.( d8) c4 |
  r2 g'4( f8 e) |
  d2 \stemDown a
}

\score {
    <<
    \new Staff \with { instrumentName = #"Standard polyphony" }

      << \musicUp \\ \musicDown >>

    \new Staff \with {
      instrumentName = #"PartCombine without text"
      printPartCombineTexts = ##f
    }

    \partcombine \musicUp \musicDown

    \new Staff \with { instrumentName = #"PartCombine with text" }
      \partcombine \musicUp \musicDown
    >>

 \layout {
    indent = 6.0\cm
    \context {
      \Score
      \override SystemStartBar.collapse-height = #30
    }
  }
}

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