Formatting single self in use declarations

[rvql]

When formatting the following code with rustfmt 1.7.0-stable (25ef9e3 2024-04-09)

use std::str::{self};

I'm expecting

use std::str;

but the code is unchanged. I'm not sure if this is by design.

[ytmimi]

@rvql To the best of my knowledge use std::str::{self}; and use std::str; are semantically different. See #3750 as an example. That's why rustfmt doesn't modify the code.

This is also a duplicate of the already closed #6129

[rvql]

@rvql To the best of my knowledge use std::str::{self}; and use std::str; are semantically different. See #3750 as an example. That's why rustfmt doesn't modify the code.

This is also a duplicate of the already closed #6129

Thanks for the clarification.