Fix #5823

[codingskynet]

close #5823

I solved the problem very simply. But, I do not know rustfmt very well, so I am not sure that the change is suitable and proper. Please give me advice or editing for more proper solution is welcome.

[ytmimi]

@codingskynet thanks for submitting a PR.

Unfortunately, rustfmt's strong stability guarantee prevents us from accepting this PR as it's currently written since it would modify existing formatting. In this case, the existing formatting is that rustfmt leaves the call chain unmodified. I understand if that sounds bizarre to you. @calebcartwright is this something we could move forward with if it were version gated?

I also want to highlight that you can currently format your test case by setting format_strings=true (which requires nighlty)

Input:

fn issue_5823() {
    a.b(
      |    | {
     let c = "very long text for formatting test of very long text, frequently used on logging and other situations";
        }
    );
}

output:

fn issue_5823() {
    a.b(|| {
        let c = "very long text for formatting test of very long text, frequently used on logging \
                 and other situations";
    });
}