rust/tests/ui/pattern/range-pattern-meant-to-be-slice-rest-pattern.rs

fn main() {
    match &[1, 2, 3][..] {
        [1, rest..] => println!("{rest:?}"),
        //~^ ERROR cannot find value `rest` in this scope
        //~| ERROR cannot find value `rest` in this scope
        //~| ERROR `X..` patterns in slices are experimental
        _ => {}
    }
}
On resolve error of `[rest..]`, suggest `[rest @ ..]` When writing a pattern to collect multiple entries of a slice in a single binding, it is easy to misremember or typo the appropriate syntax to do so, instead writing the experimental `X..` pattern syntax. When we encounter a resolve error because `X` isn't available, we suggest `X @ ..` as an alternative. ``` error[E0425]: cannot find value `rest` in this scope --> $DIR/range-pattern-meant-to-be-slice-rest-pattern.rs:3:13 \| LL \| [1, rest..] => println!("{rest:?}"), \| ^^^^ not found in this scope \| help: if you meant to collect the rest of the slice in `rest`, use the at operator \| LL \| [1, rest @ ..] => println!("{rest:?}"), \| + ``` Fix #88404. 2023-11-16 18:55:55 -06:00			`fn main() {`
			`match &[1, 2, 3][..] {`
			`[1, rest..] => println!("{rest:?}"),`
			//~^ ERROR cannot find value `rest` in this scope
			//~\| ERROR cannot find value `rest` in this scope
			//~\| ERROR `X..` patterns in slices are experimental
			`_ => {}`
			`}`
			`}`