Re: Ebnf Lexer and Parser generator in nim

[loloiccl]

nimly support only BNF now. For example, these are missing now.

  * option ([else] in) : IF cond THEN exp [else]
  * 0 or more ({param} in): PROC NAME RPAR {param} LPAR



But you can write BNF which equal to these.

I will support EBNF later 
([https://github.com/loloiccl/nimly/issues/21](https://github.com/loloiccl/nimly/issues/21))