Dear lily-list-members,
first of all: A happy new year!
In my projects I often combine several files, each containing one piece,
to a book.
In fact, I store the music in a scheme-based structure to instantiate it
later.
The included files shall intentionally not create a PDF, so that
instantiation can be organized in bookparts as needed.
But when I work on a specific piece I want to debug it without compiling
the whole book.
One solution would be to use frescobaldi and a comment %%master:
../<main>.ly at the end of the file. But then I have to create a
master-file for each part.
So I created a music-function to include a testfile wich contains
instructions to instantiate the music stored in my structures only if I
am compiling this file directly:
--snip--
#(define-public includeLocal (define-music-function (parser location
file)(string?)
(let ((outname (format "~A.ly" (ly:parser-output-name parser)))
(locname (car (ly:input-file-line-char-column location))))
(if (or (string=? outname locname)(string-suffix? outname
locname))
(let ((content (ly:gulp-file file)))
(ly:parser-include-string parser content)))
(make-music 'SequentialMusic 'void #t))))
\includeLocal "test.ly"
--snip--
This function first compares the outname with the location name and only
includes the file if they match. (This should not work, if you have set
some output-suffix!)
This is a usable solution to me. But I would like to have the correct
location info available, while parsing the included file.
Is it possible to create an arbitrary "include"-music-function? This
would make it possible, to (for example) include all files in a
directory or matching a specific pattern.
Cheers,
Jan-Peter
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