Hi David, > No. You propose replacing (cons 3 4) as a time signature designation > with (cons 3 (ly:make-duration 2)). You have failed to give any > indication of what you want to see (cons 8 20) replaced with.
Well at least now you’ve asked the question you clearly meant to ask earlier, in a way that someone other than you can figure out how to answer in the way you’re expecting. =) > It will likely end up as (ly:make-duration 4 0 4/5) That seems fine to me. > but that has no unique printed representation different from > (ly:make-duration 4) Correction: Lilypond doesn’t, by default, give a “unique printed representation” to (ly:make-duration 4 0 4/5) as compared with (ly:make-duration 4). On the other hand, I am fully capable of making Lilypond do so, i.e., formatting the denominator as a sixteenth note *with a '5' [possibly in a bracket] below it*, which absolutely *is* a “unique printed representation”, and will convey to the performer exactly the desired meaning. > (ly:make-duration 4 0 4/5) and (ly:make-duration 4 0 8/10) > are absolutely indistinguishable. I can do the math to back-calc either of those into a note duration in order to determine. So I guess here’s my [final] answer to your question: I’d like to see (cons 8 20) replaced with whatever is easiest for the lexer / parser to convert to and from and/or pass through to the time function(s) without losing any critical information about the denominator duration. Feel free to ask me for yet another answer to this question… but be warned that I don’t know enough about the lexer or parser or Lilypond’s internal representation of durations to give a more specific or nuanced or helpful answer than that. ;) Cheers, Kieren.