Closing brace in {} can be separated

[varkor]

See here, for instance, where rustfmt decided that

                (AngleBracketedArg::Arg(_), None) | (AngleBracketedArg::Constraint(_), Some(_)) => {
                }

was ideal. This looks silly — {} (and any other paired symbols) should be kept together.

[topecongiro]

Thank you for the report. However this is expected, { is the 100th character on the line, and putting } on the same line will exceed the max width.

[varkor]

I understand why it happens. However, I think this behaviour is wrong: according to the formatting RFC, empty blocks should be written {}: https://github.com/rust-dev-tools/fmt-rfcs/blob/master/guide/expressions.md#blocks. The current behaviour is also ugly.

[varkor]

cc @topecongiro: I think this should be reopened following #4098 (comment).