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From: | Urs Liska |
Subject: | ly:parser-parse-string again |
Date: | Tue, 5 Jul 2016 15:01:33 +0200 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.1.1 |
Hi, 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: 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. Urs PS: The actual context is https://git.openlilylib.org/bfsc/kayser/blob/score/includes/lib/file-handling.ily#L124 (the unfinished stuff starting from L. 143), but I'm not sure if that's sufficiently retraceable from that page) |
main.ly
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levelOne.ily
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levelTwo.ily
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