Re: ly:parser-parse-string again

[David Kastrup]

Urs Liska <address@hidden> writes:

> I'm once more struggling with the commands to include files within
> Scheme functions.
>
> In the attached .ily files one defines a music expression while the
> other uses it in a Staff definition.
>
> I can happily make that work using regular \includes or by calling
> ly:parser-include-string twice. But I need to wrap this into a Scheme
> function to include multiple files from within a function and process
> the results (the music expressions from the files) within the same function.
>
> I am not surprised that the second approach (using
> ly:parser-include-string twice within the function) doesn't work. Last
> time this question popped up I learned that any definition from inside
> the included file will only be visible after the function has returned.
> (uncomment second example to see it "in action").
>
> So I thought I had to use ly:parser-parse-string together with
> ly:parser-clone to make the definitions available earlier, and in
> another context this worked
> (https://github.com/openlilylib/oll-core/blob/master/oll-core.ily#L59).
>
> However, this time I get strange errors with the parse-string function
> as that doesn't even seem to be able to parse the first file properly.
> The first error is
>
> levelOne.ily:3:19 <0>: error: wrong type for argument 2. Expecting
> music, found "c"
>
> music = \relative
>
> c' { c }
>
> followed by numerous consecutive errors that are probably neglectable.
>
> I would very much appreciate any further clarification and assistance as
> I really don't have a clue how to proceed.

Try selecting a note name language.

-- 
David Kastrup