blocks and closures in method chains are visually indented

[nrc]

Which can cause orphans lower in the chain. E.g.,

    aaaaaaaaaaaaaaaa.map(|x| {
                            x += 1;
                            x
                        })
        .filter

The tricky thing here is that we do want to visually indent arguments to methods outside chains

[SamWhited]

Something very similar happens with multi-line macro invocations, although I'm not sure if this is the same issue so I'll paste it here and can move it to a new issue if not:

    TokenStream::from_str(quote!{
        #deserialized
    }
            .as_str())
        .unwrap()

Playground

[topecongiro]

Closed via #1604.