I'm trying to allow predefine fret diagrams to use the verbose style as well as the terse style.
I'd like to pass a diagram-definition to a music function that can be either a list or a string. If it's a list, I'll treat the definition as a verbose definition. If it's a string, I'll treat it as a terse definition. I've got everything in place except for the data type check. What kind of a type check can I use to see if a variable is a list (or pair) or a string? I'm after something like: (define-music-function (parser location key-symbol tuning shape-definition) (symbol? pair? ????) Where ??? would be the true for either a pair or a string. Thanks, Carl _______________________________________________ lilypond-devel mailing list lilypond-devel@gnu.org http://lists.gnu.org/mailman/listinfo/lilypond-devel
