src/tools/clippy/src/docs/positional_named_format_parameters.txt


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### What it does
This lint warns when a named parameter in a format string is used as a positional one.

### Why is this bad?
It may be confused for an assignment and obfuscates which parameter is being used.

### Example
```
println!("{}", x = 10);
```

Use instead:
```
println!("{x}", x = 10);
```