Following the long discussion at the last community meeting about unifying the TLA+ parsers I opened a RFC (to be taken literally - your comment is requested!):
It is quite long but I lay out my perspective and welcome others. Hopefully if we all read each others' comments we can have a shorter discussion at the next meeting, or in a parser-specific working group.
In the near future we are punting on this question by me just working on a large semantic test corpus.
Andrew Helwer