Interestingly you say comments aren’t valid in the middle of the local part but I thought they are, and the parser I used agreed. Maybe obsolete behaviour?
I didn’t realise quotes could be dot separated but it makes sense now I look back over the EBNF! That’s really cool.
Sorry I made you think I’d stolen your content, I can totally see why you’d think that. I promise you that was the first time I watched that video.
I got my examples mostly from looking through https://github.com/jackbearheart/email-addresses/blob/master... and reading the EBNF in RFC 5322.
Will watch your video!