On Mon, 2026-08-24 at 12:27 +0200, Thomas Morley wrote: > Am So., 23. Aug. 2026 um 18:42 Uhr schrieb Richard Shann > <[email protected]>: > > > > Denemo has a version of Graham Percival's live-score.ily to > > annotate > > LilyPond's SVG output with line and column information for each > > note > > and rest in a score. With LilyPond version 2.26 this is not working > > - > > the SVG output contains <g id=""> instead of the line and column > > information e.g. <g id="Note-12-10">. In the documentation it says > > output-attributes.id can be set to symbols - in this case it is set > > to > > a procedure expecting a grob argument. It's not clear if that is an > > acceptable value, but appears to have worked for the last ten > > years. > > This is the procedure definition and the override that is used > > > > %%%%%%%%%%%%%%%%%%%%%%%%% > > #(define (note-id grob) > > (let* ((origin (ly:input-file-line-char-column > > (ly:event-property (ly:grob-property grob > > 'cause) 'origin)))) > > (string-concatenate > > (list > > "Note-" > > (ly:format "~a-~a" > > (cadr origin) > > (caddr origin)))))) > > > > \override NoteHead.output-attributes.id = #note-id > > > > %%%%%%%%%%%%%%%%%%%% > > The full include file is attached (after convert-ly) - it has a lot > > of > > redundant code as all Denemo needs is the location of notes and > > rests > > in the LilyPond score. > > My question is, has something changed to make this fail? > > > > Richard Shann > > I seem to remember: in a nested list a sublist can not be set to a > procedure while doing a grob override. > If this is correct I wonder why that code ever worked. > > Ofcourse you can use the _result_ of a procedure to construct said > nested list: > > #(define (note-id grob) > (let* ((origin (ly:input-file-line-char-column > (ly:event-property (ly:grob-property grob 'cause) > 'origin)))) > (ly:format "Note-~a-~a" > (cadr origin) > (caddr origin)))) > > { > \override NoteHead.output-attributes = > #(grob-transformer 'output-attributes > (lambda (grob orig) (cons (cons 'id (note-id grob)) (or orig > '())))) > > a1 > \break > b1 > } > > Does this work for you?
Yes, indeed it does - thank you very much. I've noticed that I have another 2.26 upgrade problem the vibrato code (wavy line above notes) which I think you wrote originally. It seems this works with 2.26 but gets broken by applying convert-ly! But that's for a separate thread. Richard
