Today we found that you can't use MEX with ROI, MOI, or MAI, even in the PEG. camxes treats a closed MEX (e.g. {vei mo'e ko'a [te'u ve'o]} as a "quantifier", distinct from PA* (i.e. PA* = PA | PA PA*), which it calls a "number". With MOI we have the YACC-friendly hack "ME LI MEX MOI", which still cooperates with the PEG, but as best I can tell there is no such hack for ROI and MAI.
Would anything go wrong if MEX ROI, MEX MOI, and MEX MAI were made allowed in the PEG? If not, can we get this into camxes?
mi'e la latro'a mu'o