I'd say that's only mostly true - if you had a typo, and wrote "camelcase" instead of "camelCase" in just one place out of a hundred, you might not notice it, but it will compile, and not match a grep (though it will match nimgrep). This case could be solved by "grep -i" or equivalent, but not the camelcase vs. camel_case case.

This is not criticism; I prefer Nim's mostly-case-and-underscore-insensitive approach, but I think this is a pitfall that should be acknowledged and taken into account (which is quite easy to do given the included nimgrep).

Perhaps it makes sense to have an optional warning in case a name is inconsistently spelled inside the same compilation unit.