Rust formatter moves code into one line

[MarkuBu]

Hi, Rust formatter (in VS Code) moves code into one line even if it shouldn't. For example the guessing game from the Rust book

    io::stdin()
        .read_line(&mut guess)
        .expect("Failed to read line");

is formatted into a single line

    io::stdin().read_line(&mut guess).expect("Failed to read line");

Is it possible to get the first formatting by default?

[blonk]

Didn't actually test it, but I assume you could use a sufficiently small value for chain_width?

Create a rustfmt.toml in your project's directory and add the chain_width parameter in it.

[MarkuBu]

Thanks, this works. I set chain_width to 20 just for testing and it worked. Maybe I have to tweak it a little bit up or down

[danjl1100]

You can also use inline comments as a method of forcing lines to stay separate:

io::stdin() // describe something here
        .read_line(&mut guess) // or leave blank, these are fairly self-explanatory
        .expect("Failed to read line");

[nicholastmosher]

If you don't want to change project-wide settings, I believe that rustfmt will respect annotations, so you could do something like this:

#[rustfmt::skip]
io::stdin()
        .read_line(&mut guess)
        .expect("Failed to read line");