Still use EBNF, so some of my tools, citations, and sources are: Here is a list of all variants of EBNFs as well as Vim syntax highlighter for EBNF variants:

Still use EBNF, so some of my tools, citations, and sources are: Here is a list of all variants of EBNFs as well as Vim syntax highlighter for EBNF variants: https://github.com/egberts/vim-syntax-ebnf https://github.com/egberts/vim-syntax-ebnf And a EBNF format detector: https://github.com/egberts/filetype-ebnf-grammars https://github.com/egberts/filetype-ebnf-grammars And a master list of all variants of EBNF: http://www.cs.man.ac.uk/~pjj/bnf/ebnf.html http://www.cs.man.ac.uk/~pjj/bnf/ebnf.html