I had to change to English to discuss PEG because it's impossible to do that in Lojban.
I could have invented something on the fly but wouldn't have been understood.
E.g. how do we say "elidible"?
Seems like it's {jai se curmi fai lo ka se kunti} although we can think of it as of {ka'e kunti}
Then the variable "GEhU_elidible" would become "mahoi_GEhU_poi_kahe_kunti" or "cmavo_mahoi_GEhU_poi_kahe_kunti" ?
Besides, many variables have names that are impossible to utter or remember (like bridi_tail_t1).
We need to extract all necessary elements from e.g. here:
, put them into a table, e.g. in the wiki and then start translating them.
"/" and "(",")" operators should also be possible to say in Lojban.
After that we can create a new PEG which would produce the same trees but which will have purely Lojbanic names of nodes.