No diagnostic when completion fails because of a compiler error

[adpi2]

Reproduction Step

1. Create a new snippet
2. Type this without "saving"

def foo(x1: Option[String]): Option[String] = ???

def foo(x2: String): String = ????

foo(1).

I don't get any auto-completion on foo(1)..

This is expected since foo(1). does not type-check but there is no clue explaining me why.

Expectation

It would be great if we could have some diagnostics explaining why the completion failed.

[julienrf]

I agree that it would be good to have a way to signal to the user that the code did not compile (even better: report the compilation errors).