Re: initial grace notes prevent instrumentName &, systemStartBrace/Square

[Patrick Schmidt]

Am 09.09.2010 um 11:12 schrieb Mats Bengtsson:

> > Good morning LilyPond,
> >
> > \version "2.13.31" % on Mac OS X
> > \paper{ raggedright = ##t }
> >
> > initialAcciaccatura = \relative c' {
> >        \acciaccatura <c e g>8
> >        <d fis a>8
> > }
> >
> > initialGrace = \relative c'' {
> >         \grace c16
> >         c4
> > }
> >
> > initialAppoggiatura = \relative c'' {
> >         \appoggiatura c16
> >         c4
> > }
> >
> > middleGrace = \relative c'' {
> >         c4 \grace c16
> >         c4
> > }
> >
> > \markup { initial acciaccatura prevents instrument name and system
> > start brace }
> > \score {
> >    \new StaffGroup = "Guitar"
> >    \with {\consists "Instrument_name_engraver"}
> >    <<
> >      \set StaffGroup.instrumentName = #"Guitar"
> >      \set StaffGroup.systemStartDelimiter = #'SystemStartBrace
> >      \new Staff {
> >             \initialAcciaccatura
> >      }
> >      \new TabStaff {
> >        \initialAcciaccatura
> >      }
> >    >>
> > }
snip

> This is just another manifestation of our old favourite bug which  
> is documented under "Known issues and warnings" in http:// 
> lilypond.org/doc/v2.13/Documentation/notation/special-rhythmic- 
> concerns#grace-notes.
> However, your example is a bit more subtle, since you do property  
> settings that happen in parallel with the grace notes and it seems  
> that LilyPond thinks that these settings happen
> after the grace notes, which means that they have not taken effect  
> when the StaffGroup is created.
> There are two simple remedies:
> 1) Move the settings to the \with{...} clause:
> \score {
>   \new StaffGroup = "Guitar"
>   \with {
>     \consists "Instrument_name_engraver"
>     instrumentName = #"Guitar"
>     systemStartDelimiter = #'SystemStartBrace
>   }
>   <<
>     \new Staff {
>            \initialAcciaccatura
>     }
>     \new TabStaff {
>       \initialAcciaccatura
>     }
>   >>
> }
>
>
> 2) Move the settings to within one of the Staff contexts that you  
> define and do them before the grace notes:
> \score {
>   \new StaffGroup = "Guitar"
>   \with {\consists "Instrument_name_engraver"}
>   <<
>          \new Staff {
>            \set StaffGroup.instrumentName = #"Guitar"
>            \set StaffGroup.systemStartDelimiter = #'SystemStartBrace
>            \initialGrace
>     }
>     \new TabStaff {
>       \initialGrace
>     }
>   >>
> }
>
> Of course, alternative 1) is gives a more aesthetically pleasing  
> input file.
>
>     /Mats

Thank your for your explanation and solutions. I had read the "Known  
Issues" section but wasn't sure whether it's the same bug.

Cheers,
patrick