Christopher Smith <chry...@gmail.com> writes:
>> Assign the result to a variable xxx and use \xxx.
>
> The assignment works, but then Lilypond 2.16.0 throws "error: unknown
> escaped string `\xxx'" and finally fails, expecting '='. I think it
> may be having trouble figuring out what to do with the resulting
> value, which is (currently) a score.
Score variables can be used only as a score body, like
\score { \xxx \layout { } }
or similar.
> (I'm happy to change that if something else will work better; I'm just
> trying to write a function that takes individual part excerpts and
> lays them out in a complex but stereotyped way.)
>
>> Oh, and what should also work is writing
>> $#{ \schemefunctioncall ... #}
>
> This produces "error: syntax error, unexpected SCORE_IDENTIFIER <the
> entire text of the function call, including the leading $ and trailing
> }>".
Again, score identifiers can't be used at top level, but have to be
placed _inside_ of a \score again. This is similar to book variables
(which also need to get placed inside of \book).
I actually just found out that obliterating the assignment for score
identifiers is dead easy, so it will likely be unnecessary in about a
week. However, you will still have to heed writing \score { ... }
around any scheme function call even then.
> (Additionally, is there a convenient way to find the width of some
> grob that I could use to feed to the layout indent? I'm not a Scheme
> programmer and am having trouble wrapping my head around the uasge of
> X-extent and ly:grob-extent.)
That's a question for the backend specialists.
--
David Kastrup
_______________________________________________
lilypond-user mailing list
lilypond-user@gnu.org
https://lists.gnu.org/mailman/listinfo/lilypond-user
