[Quekid5]

> [...] as a context free grammar using EBNF notation. This is impressive, but maybe a little more complicated than I want to get with a basic security tool.

I apologize if I'm being trite, but Context Free Grammar doesn't mean that the semantics of whatever that grammar describes is simple. It just means that it's simple to parse into ... something. Parsing a CFG is also not impressive in the slightest. It is, in fact, trivial since the 1970s. Anyway,

You shouldn't be scared of the CFG bit... you should be scared of the semantics.