Interesting. I don't understand the '@' syntax -- been trying to look it up
but so far to no avail.
Here's what I ended up with:
#(begin
(use-modules (guile-user))
(if (not(symbol? 'part))
(define part 0)
)
(if (= part 0)
(define partName "")
(define partName (string-append "S" (number->string part)))
)
)
which gives me a default value for "part" if not defined on the command
line. The "partName" variable is used later: if non-null, the script will
print parts instead of a full score, thus
lilypond -o Hexany_Permutations hexany_permutations.ly
lilypond -e "(define part 1)" -o Hexany_Permutations_S1
hexany_permutations.ly
lilypond -e "(define part 2)" -o Hexany_Permutations_S2
hexany_permutations.ly
lilypond -e "(define part 3)" -o Hexany_Permutations_S3
hexany_permutations.ly
lilypond -e "(define part 4)" -o Hexany_Permutations_S4
hexany_permutations.ly
lilypond -e "(define part 5)" -o Hexany_Permutations_S5
hexany_permutations.ly
lilypond -e "(define part 6)" -o Hexany_Permutations_S6
hexany_permutations.ly
which yields a PDF for the full score and a separate PDF for each part
(where the instruments are designated as S1 through S6). I guess I could
probably do it all in a single invocation, but I haven't gotten that far
yet -- only been using Lilypond for about a week now.
- Dave
On Mon, Oct 19, 2020 at 6:22 PM Aaron Hill <[email protected]> wrote:
> On 2020-10-19 2:45 pm, Jean Abou Samra wrote:
> > You can ignore the warning that shows up
> > (https://gitlab.com/lilypond/lilypond/-/issues/3613).
>
> You can avoid the warning by using the @ syntax:
>
> %%%% eval-scope.ly %%%%
> \version "2.20.0"
> #(format #t "\nvalue = ~s"
> (false-if-exception (@ (guile-user) value)))
> %%%%
>
> ====
> > lilypond eval-scope.ly
> GNU LilyPond 2.20.0
> Processing `eval-scope.ly'
> Parsing...
> value = #f
> Success: compilation successfully completed
>
> > lilypond -e "(define-public value 123)" eval-scope.ly
> GNU LilyPond 2.20.0
> Processing `eval-scope.ly'
> Parsing...
> value = 123
> Success: compilation successfully completed
> ====
>
>
> -- Aaron Hill
>
>
