Grégoire Détrez

Hum, that's a good observation. In the first case, where you have two different kind of brackets used for grouping expressions, it's going to be impossible to distinguish the two...

EBNF is already in the list of [possible future backends](https://github.com/BNFC/bnfc/wiki/Backend-ideas#ebnf). But maybe you meant supporting ebnf as input?

I don't think that you can access the position of any node excepts token defined with the `position` keyword. It could maybe be added as an option...

Hi @pascalh. Thanks for this :+1: and for taking time to add tests :heart: I see from the code that it should add the proper dependencies but when trying on...

It took me a while but I manage to make some more tests. I am using ghc 7.8 and Cabal (library) 1.18. I tried rebuilding bnfc with Cabal 1.22 and...

This came up again in the google group. One difficulty is to figure out how to best implement it in all target languages. - Haskell has `Maybe` - Ocaml has...

I have two open questions before I can try to work on this: **What is the most idiomatic way to implement this in different languages?** I have an idea for...

Interesting idea @forflo. I realize now that what you want to do and what was suggested in this issue are actually two different features. There is actually already a mechanism...

It seems that what you are describing is like some sort of text-substitution macro. I.e. replace every occurence of `Designator` by `Identifier` in the source file? If so, you should...

> The question is: Would you accept a PR for this feature? Yes but with a different syntax that makes it clear that it's a macro and not a rule....