Re: add-grace-properties in TabVoice context

[Neil Puttock]

2009/7/3 Marc Hohl <address@hidden>:

> Programmierfehler: cannot find context:
> Fortsetzung, die Daumen drücken
> TabVoiceProgrammierfehler: cannot find context:
> Fortsetzung, die Daumen drücken
> TabVoiceVorverarbeitung der grafischen Elemente...
> Solving 1 page-breaking chunks...[1: 1 pages]

Hmm, some rather poor formatting for this programming error: the
context string is further down the log since it's not part of the
error string.

> 1) Apparently I made some mistakes, but I don't understand the error
> messages.

The error comes from the Voice context in your snippet, since it can't
find a TabVoice to apply the setting to. Try this instead:

#(add-grace-property 'Voice 'TabNoteHead 'font-size -4)

Because TabVoice is an alias of Voice, the 'font-size setting will be
applied correctly, but ignored in any Voice contexts.

> 2) Can I automatize the function call so that the user doesn't have to call
>  add-grace-property in every new TabVoice?
>  I tried to put this in a layout block, but
>  \layout {
>     \context {
>        \TabStaff
>        #(add-grace-property 'TabVoice 'TabNoteHead 'font-size -4)
>     }
>  }
>  gives an error message.

You can't put functions inside a context definition.

I'd suggest making this part of the default grace settings by adding
the override directly to graceSettings and make-voice-props-set.

Regards,
Neil