8467ceff22
Add secondary span labels with no text to make it clear when there's a
mismatch bewteen the positional arguments in a format string and the
arguments to the macro. This shouldn't affect experienced users, but it
should make it easier for newcomers to more clearly understand how
`format!()` and `println!()` are supposed to be used.
```
error: 2 positional arguments in format string, but there is 1 argument
--> file8.rs:2:14
|
2 | format!("{} {}", 1);
| ^^ ^^ -
```
instead of
```
error: 2 positional arguments in format string, but there is 1 argument
--> file8.rs:2:14
|
2 | format!("{} {}", 1);
| ^^ ^^
```
53 lines
1.2 KiB
Rust
53 lines
1.2 KiB
Rust
// ignore-tidy-tab
|
|
|
|
fn main() {
|
|
println!("{");
|
|
//~^ ERROR invalid format string: expected `'}'` but string was terminated
|
|
println!("{{}}");
|
|
println!("}");
|
|
//~^ ERROR invalid format string: unmatched `}` found
|
|
let _ = format!("{_foo}", _foo = 6usize);
|
|
//~^ ERROR invalid format string: invalid argument name `_foo`
|
|
let _ = format!("{_}", _ = 6usize);
|
|
//~^ ERROR invalid format string: invalid argument name `_`
|
|
let _ = format!("{");
|
|
//~^ ERROR invalid format string: expected `'}'` but string was terminated
|
|
let _ = format!("}");
|
|
//~^ ERROR invalid format string: unmatched `}` found
|
|
let _ = format!("{\\}");
|
|
//~^ ERROR invalid format string: expected `'}'`, found `'\\'`
|
|
let _ = format!("\n\n\n{\n\n\n");
|
|
//~^ ERROR invalid format string
|
|
let _ = format!(r###"
|
|
|
|
|
|
|
|
{"###);
|
|
//~^ ERROR invalid format string
|
|
let _ = format!(r###"
|
|
|
|
|
|
|
|
{
|
|
|
|
"###);
|
|
//~^ ERROR invalid format string
|
|
let _ = format!(r###"
|
|
|
|
|
|
|
|
}
|
|
|
|
"###);
|
|
//~^^^ ERROR invalid format string
|
|
let _ = format!(r###"
|
|
|
|
|
|
|
|
}
|
|
|
|
"###);
|
|
//~^^^ ERROR invalid format string: unmatched `}` found
|
|
println!("{} {} {}", 1, 2);
|
|
//~^ ERROR 3 positional arguments in format string, but there are 2 arguments
|
|
}
|