Hi, Le 28/09/2022 à 12:13, Jean Abou Samra a écrit :
It seems that LilyPond does an inappropriate type check on the second argument of ly:make-stream-event (pair? instead of cheap-list?), but it also looks like edition-engraver is missing some bits.
The basic failure in LilyPond is fixed now (https://gitlab.com/lilypond/lilypond/-/merge_requests/1644), although the deeper problems of the edition engraver remain. Best, Jean