2 Detects [formatting parameters] that have no effect on the output of
3 `format!()`, `println!()` or similar macros.
6 Shorter format specifiers are easier to read, it may also indicate that
7 an expected formatting operation such as adding padding isn't happening.
11 println!("{:.}", 1.0);
13 println!("not padded: {:5}", format_args!("..."));
19 println!("not padded: {}", format_args!("..."));
21 println!("padded: {:5}", format!("..."));
24 [formatting parameters]: https://doc.rust-lang.org/std/fmt/index.html#formatting-parameters