write!() -> writeln!() invalid when just printing a newline #6612
Description
This is visible on both stable and nightly. When advising changing write! to writeln!, the clippy outputs no string but still prints the comma. There has to either be no comma after out_file.
warning: using `write!()` with a format string that ends in a single newline
--> src/gap_chat.rs:80:9
|
80 | write!(gap_channel.out_file, "\n").unwrap();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: `#[warn(clippy::write_with_newline)]` on by default
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#write_with_newline
help: use `writeln!()` instead
|
80 | writeln!(gap_channel.out_file, ).unwrap();
| ^^^^^^^ --
warning: 1 warning emitted