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Rollup merge of #117395 - gurry:117380-wrong-parent-sugg, r=Nilstrieb

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Fix missing leading space in suggestion

For a local pattern with no space between `let` and `(` e.g.:
```rust
  let(_a) = 3;
```
we were previously suggesting this illegal code:
```rust
  let_a = 3;
```
After this change the suggestion will instead be:
```rust
  let _a = 3;
```
Fixes #117380
This commit is contained in:
Guillaume Gomez 2023-10-30 17:33:19 +01:00 • committed by GitHub
commit 9e4ab9f111
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4 changed files with 90 additions and 2 deletions
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2
compiler/rustc_lint/src/unused.rs
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@ -1154,7 +1154,7 @@ impl EarlyLintPass for UnusedParens {
fn check_stmt(&mut self, cx: &EarlyContext<'_>, s: &ast::Stmt) {
if let StmtKind::Local(ref local) = s.kind {
self.check_unused_parens_pat(cx, &local.pat, true, false, (false, false));
self.check_unused_parens_pat(cx, &local.pat, true, false, (true, false));
}
<Self as UnusedDelimLint>::check_stmt(self, cx, s)