Thanks for the compliment.

I Still need to produce more examples (contributions are welcome :) ) There is one bigger (but incomplete example) of ECMAScript 5.1. https://github.com/SAP/chevrotain/blob/master/examples/types... It is written in Typescript.

About LaTex: I'm not familiar with LaTex, However if I understand correctly it is based on Tex which is not a context free language.

Meaning it can't be parsed with standard parsing tools.

See details here: http://tex.stackexchange.com/questions/4201/is-there-a-bnf-g...