I don't enjoy being the token curmudgeon here, but I find it increasingly hard to appreciate why a non-ambiguous choice (prefix "^") with precedence in related languages should be rejected in favor of one requiring context-sensitive grammar mangling with some known odd consequences. At the very least, could someone help check as-yet-unknown impact by using candidate parsers on large source corpuses (for example http://groups.inf.ed.ac.uk/cup/javaGithub/, google-internal, etc)?
-Doug
