Nim's roots are firmly in Pascal and Ada, which are both case insensitive; Every editor supports case insensitive search so I don't understand what your problem

Nim's roots are firmly in Pascal and Ada, which are both case insensitive; Every editor supports case insensitive search so I don't understand what your problem is with case insensitive identifiers. "Basic refactoring tools" would just need to replace the case sensitive search with insensitive. Every editor knows how to do that. If you're talking about the underscore and first letter rules - yes, they're different, and that's why nim includes nimgrep, and support was added for just about every editor under the sun already (Emacs, VSCode, Vim, Sublime, TextMate at the very least). It's still Ctrl+F