I'm not insulting anyone. These are facts. I don't agree. Of course if you modify certain scheme files and remove the parts that concern hel-arabic, it may not work. I challenge you,my initial version which did not depend at all on Lilypond worked very well without modifying anything. Initial hel-arabic which does not depend on lilypond allows you to write any Western or Arabic music, after which I modified it so that it integrates perfectly with lilypond. hel-arabic.ly initially could be called directly, by putting it in the folder containing the ly file to compile. Too bad James is no longer here, he was my correspondent at the time. He was part of the developer team.
I had proven at the time to James that hel-arabic.ly could be used without modifying anything, he had wanted the integration of this hel-arabic file and I was forced to modify certain scheme files to that the integration goes well Bien cordialement Hassan EL FATIHI