Re: Export from LilyPond to MusicXML (Thomas Morley)

[Peter Toye]

Thanks very much Harm, but as I no longer need it, I shan't go ahead. If I need it later I'll resurrect this thread.

 

The reason I like Jan-Peter's approach is that it appears to abstract the music from the details of presentation. But I've not looked into it much. 

Best regards,

Peter

mailto:lilypond@ptoye.com

www.ptoye.com

-------------------------

Thursday, October 7, 2021, 10:46:44 AM, Thomas Morley wrote:

> Am Do., 7. Okt. 2021 um 11:30 Uhr schrieb Peter Toye <lilypond@ptoye.com>:
> >
> > The potential need has gone away now - my Sibelius user has told me that he uses ScoreMuse to export the PDF into a suitable format for Sibelius. Looks to me like an expensive way of doing it, but if he can afford Sibelius he can probably afford ScoreMuse as well.
> >
> > I agree that exchanging music information between different engravers is an extremely complex problem and I don't underestimate the difficulty.
> >
> > I tried Jan-Peter's code on Github, but it seems to be broken on recent versions of LilyPond. I'm told it works on 19.0  but I don't have that version any more. And I don't have a contact for him to ask - is he on this mailing list?

> Not sure Jan-Peter's approach is the best method ...
> Anyway, applying the following diff makes it work with recent versions
> (although you'll get a bunch of messages):

> ~/openlilylib/lilypond-export (master)$ git diff
> diff --git a/api.scm b/api.scm
> index 8307dc5..3bfa69a 100644
> --- a/api.scm
> +++ b/api.scm
> @@ -275,8 +275,8 @@
>           (let ((musicstep (ly:context-property context ctprop::export-step))
>                 (staff-id (ly:context-property context ctprop::staff-id))
>                 (voice-id (ly:context-property context ctprop::voice-id)))
> -           (ly:message "stem info ~A" (map car (ly:grob-properties grob)))
> -           (tree-set! musicstep `(,staff-id ,voice-id stem dir)
> (ly:grob-properties grob)) ;(ly:stem::calc-direction grob))
> +           (ly:message "stem info ~A" (map car
> (ly:grob-basic-properties grob)))
> +           (tree-set! musicstep `(,staff-id ,voice-id stem dir)
> (ly:grob-basic-properties grob)) ;(ly:stem::calc-direction grob))
>             ))
>          )

> Cheers,
>   Harm