I had contributed the M2 lexer to Pygments several years ago. Meanwhile I have made some updates to my working copy. How do I contribute this? I do not have write access to your repo. The updated file is in my bitbucket repo at:
With this update, the lexer gets a fallback mode in which it recognises the combined reserved words and builtins of several dialects where before it defaulted to an outdated dialect that has not been maintained since 1984. In fact, the option selection did not work.