Re: Ambitus + Cue gives spurious note column warning

[Richard Shann]

On Sat, 2022-07-23 at 16:38 +0200, Jean Abou Samra wrote:
> 
> 
> Le 23/07/2022 à 15:58, Richard Shann a écrit :
> > The combination of Ambitus and a cue seems to provoke a strange
> > warning:
> > 
> > 8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><
> > \version "2.22"
> > MvmntIVoiceI = { c'1 c'}
> > MvmntIVoiceII = {
> >                   \cueDuringWithClef #"1 Treble on Staff 1 Mvmnt
> > 1"#1 #"treble" { R1*4/4 }
> >                   c1
> >                  }
> > 
> > \layout { \context {  \Voice   \consists "Ambitus_engraver" }}
> > 
> > \addQuote "1 Treble on Staff 1 Mvmnt 1" \MvmntIVoiceI
> > 
> > \score {
> >            <<
> >              \new Staff  <<
> >    
> >                            \new Voice  { \MvmntIVoiceI } %End of
> > voice
> >                          >> %End of Staff
> > 
> >              \new Staff   <<
> >                              \new Voice = "MvmntIVoiceII"  { \clef
> > alto \MvmntIVoiceII }
> >                          >>
> >            >>
> >         }
> > 8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><8><
> > 
> > which gives:
> > 
> > Starting lilypond 2.22.0 [Ambitus-cue-notecolumnclash.ly]...
> > Processing `/home/rshann/Skype/Ambitus-cue-notecolumnclash.ly'
> > Parsing...
> > Interpreting music...
> > Interpreting music...
> > Preprocessing graphical objects...
> > programming error: Note_column without heads and stem
> > continuing, cross fingers
> > /home/rshann/Skype/Ambitus-cue-notecolumnclash.ly:6:18: programming
> > error: note-column has no direction
> >                   
> >                   c1
> > /home/rshann/Skype/Ambitus-cue-notecolumnclash.ly:6:18: continuing,
> > cross fingers
> > 
> > I cut this down from a much bigger score to make a MWE but in so
> > doing
> > I see I have inadvertently triggered an extra warning, the first
> > one
> > above about Note_column without heads and stem. The original only
> > has
> > the warning about "note-column has no direction". I hope this won't
> > muddy the issue.
> > 
> > Any thoughts?
> 
> 
> 
> That sounds like https://gitlab.com/lilypond/lilypond/-/issues/1113.
> 
> The fix appears to be very simple, currently writing the regression
> tests to post a patch ...
> 
> You can work around it for now using
> 
> \layout {
>    \context {
>      \Score
>      \override AmbitusNoteHead.meta.interfaces =
>        #'(ambitus-interface
>           font-interface
>           ledgered-interface
>           note-head-interface
>           staff-symbol-referencer-interface)
>    }
> }
> 

Thank you! That works in the original context.

Richard


> Best,
> Jean
>