one of the strangest and most grep-hostile approaches to identifiers that I have ever observed is Nim ignoring both case and underscores in an effort to allow everyone to write code in their preferred style:
And it works pretty well, coming from 6+ years of experience. It's not that strange if consider case insensitive filesystems and email addresses. But on the internet you only hear the opinion of the loudest minority.
https://nim-lang.org/docs/manual.html#partial-caseminusinsen...