> > This should ensure full backward compatibility if you process your > > old files with `convert-ly`. > > Which file?
Any input file that uses `hel-arabic.ly`. Example: ``` \version "2.24.0" \include "hel-arabic.ly" \relative { \key c \rast c' d edb f | g a bdb c | eb a g f | edb d c } ``` If you process this with `convert-ly`, you get ``` \version "2.25.13" \include "hel-arabic.ly" \language "arabic" \relative { \key c \rast c' d edb f | g a bdb c | eb a g f | edb d c } ``` and this output compiles fine with the patch from https://gitlab.com/lilypond/lilypond/-/merge_requests/2268 applied. Please look at this MR and comment. Werner