Symbol names clash with nested classes

[Atry]

https://scastie.scala-lang.org/qQhetT2rQHOARFBbyXUYSw

object O extends App {
  object a_! {
    def foo = 1
  }
  
  object a_ {
    object bang {
      def foo = 2
    }
  }
  println(a_!.foo)
  println(a_.bang.foo)
}

Output:

2
2

[som-snytt]

t11848.scala:7: warning: Generated class Main$a_$bang$ differs only in case from Main$a_$bang$.
  Such classes will overwrite one another on case-insensitive filesystems.
    object bang {
           ^

I was thinking it's just like names differing in case, but I didn't expect it to say that.

[SethTisue]

Scala 3 gives the same warning (presumably because it's coming from copy-pasted back end code).

Given the warning, I've half a mind to just close this. But admittedly the warning text in this case is a bit off the mark and that could be improved.