Consider the following macro_rules macro defined in another crate:

#[macro_export]
macro_rules! define_struct {
    () => {
        pub struct Foo;
    };
}

It does not complete when it is at the "root" of a module (not sure if this is the right terminology, it's direct parent in AST is SourceFile)

defi$0

fn main() {
    defi$1
}

Completion works for $1, but not $0. Completion will work at $0 if there is a use some_crate::define_struct; at the top of the file.

This is somewhat a recent regression most likely, because I think this was working in the past!

rust-analyzer version: 0.0.0 (b0102bd 2022-06-28)
rustc 1.63.0-nightly (12cd71f 2022-06-01)