Hi all, I now have a use case for ly:version? documented in http://lilypond.org/doc/v2.21/Documentation/usage/writing-code-to-support-multiple-versions
But the function is module-private in lily. The example on that page does not compile and so doesn't any external file. I can work around it with #(define ly:version? (@@ (lily) ly:version?)) But I guess that is not intended? I might change the define to define-public in 'scm/lily-library.scm'? Jan-Peter
