Re: Unexpected warning message

[Valentin Petzel]

Hello Paul,

this error occurs because the TrillPitchAccidental grob does not specify an 
outside-slur property, so it warns and defaults to 'ignore.

To get rid of the warning specify a suitable value. Accidental uses 'inside, 
if you do not want to change behaviour choose 'ignore. Here is a demo of how 
this can affect the score:

{
  \override TrillPitchAccidental.avoid-slur = #'ignore
  d'( \pitchedTrill cis'8[\startTrillSpan gis d'])\stopTrillSpan
}
{ 
  \override TrillPitchAccidental.avoid-slur = #'outside
  d'( \pitchedTrill cis'8[\startTrillSpan gis d'])\stopTrillSpan
}
{
  \override TrillPitchAccidental.avoid-slur = #'ignore
  d'( \pitchedTrill cis'8[\startTrillSpan eis g])\stopTrillSpan
}
{
  \override TrillPitchAccidental.avoid-slur = #'inside
  d'( \pitchedTrill cis'8[\startTrillSpan eis g])\stopTrillSpan
}

Note that in your case this does not matter, as the Accidental is recognized 
to happen at the same time as the Slur, but in fact the Slur ends at that time 
and with the TrillNoteHead being shifted to the right there is in fact no 
collision between Slur and Accidental.

The only issue this warning may cause you is an unresolved collision between a 
Slur and an TrillPitchAccidental.

Cheers,
Valentin

Am Mittwoch, 18. Jänner 2023, 13:10:23 CET schrieb Paul Hodges:
> The code below produces exactly the output that I expect. (It is extracted
> from a very complex bit of notation - trust me that things like the way the
> grace notes are written have a good reason in context.)
> 
> 
> My concern is that as well as producing the expected output, it also
> generates a warning message:
> 
> 
> 
> 
> C:/Users/PAUL~1.CAS/AppData/Local/Temp/frescobaldi-hq45qbn3/tmp6a3tkp_s/docu
> ment.ly:8:12: warning: Ignoring grob for slur: TrillPitchAccidental.
>  avoid-slur not set? cs8[)\fp
>                \startTrillSpan ds
> 
> 
> What does this even mean, and is there any way to resolve it?
> 
> 
> Paul
> 
> 
> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
> 
> 
> 
> \version "2.24.0"
> 
> 
> \language english
> 
> 
> \relative e'' {
>   \magnifyMusic 0.67 { \stemUp e!8*1/16[\ff^( fs e] }
>   \stemDown \pitchedTrill
>   cs8[)\fp \startTrillSpan ds
>   s4 
>   \parenthesize cs8\<
>   \hideNotes \set stemRightBeamCount=1 cs8*1/16]\f \stopTrillSpan
> }
> 
> 
> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

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