Re: ancient convert rules

[Benkő Pál]

Hi Jonas,

> I think I found a solution that works equally well as it did when
> running convert-ly with Python 2. Please see the second commit of
> https://gitlab.com/lilypond/lilypond/-/merge_requests/365 for what I
> tested.

I tested this branch (my first try with GitLab, I hope I got it right)
with some old examples of mine, and your branch at least creates
something usable, as opposed to current master, which just errors out.

thanks,
Pal