Re: Error in latest lilypond git HEAD with complex score

[H. S. Teoh]

On Tue, Dec 31, 2024 at 01:55:28PM -0500, Saul Tobin wrote:
>    Did you run convert-ly from HEAD?

I just tried it, the only difference in the output is the \version
number.


>    On Tue, Dec 31, 2024, 1:53 PM H. S. Teoh via LilyPond user discussion
>    <[1]lilypond-user@gnu.org> wrote:
[...]
>    > The last good version AFAIK is commit f1ad21caa. The following
>    > commit, 6c1081a82, appears to be the change that broke this,
>    > though I've no idea why it should, and what my score has to do
>    > with it (nowhere in my score do I reference ly:duration-length
>    > directly).

Actually, I take that back.  I'm using a helper Scheme function I got
from somewhere, that does reference ly:duration-length:

#(define (add-durations dur1 dur2)
         (let* ((len1 (ly:duration-length dur1))
                (len2 (ly:duration-length dur2))
                (mult (ly:moment-div (ly:moment-add len1 len2) len1)))
               (ly:make-duration (ly:duration-log dur1)
                                 (ly:duration-dot-count dur1)
                                 (* (ly:duration-scale dur1) (ly:moment-main 
mult)))))

How do I update this function to work with the new version of lilypond?
I tried to change duration-length to duration->number but it still gave
me this error:

        Parsing...ice-9/eval.scm:159:9: Throw to key `numerical-overflow' with 
args `("divide" "Numerical overflow" #f #f)'.


--T