Hi Etienne,
Happy 2022 for you too!
I have looked at the SableCC 4 git repository, and given that there is already a lot of work to do, I decided to stick to the SableCC 3.7 version for the time being. I have worked with Indrek's Sablecc-3-alt before, but that is quite old, and I wanted to update his patch to SableCC 3.7, hence my reason for asking. I just wanted to compare the code he has on his page with SableCC 3.7. But that is not an issue. I'll update his patch and in the future if I have some time, I may begin to look at SableCC 4.
Thanks once again!
Fidel H Viegas