That's ideal. It's so nice to have a parser which actually does proper error handling. So many really nice parsers completely fail to do this --- e.g. Lua's PE

That's ideal. It's so nice to have a parser which actually does proper error handling. So many really nice parsers completely fail to do this --- e.g. Lua's PEG works really, really well, except when you give it invalid input, at which point it usually just gives up and goes home...