fix: fix completion in format strings #21210
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+87
−7
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Example
---
```rust
fn main() {
let foobar = 1;
format_args!("{{{f$0");
}
```
**Before this PR**
No complete
**After this PR**
```rust
fn main() {
let foobar = 1;
format_args!("{{{foobar");
}
```
---
```rust
fn main() {
let foo_bar = 1;
format_args!("{foo_$0}");
}
```
**Before this PR**
No complete
**After this PR**
```rust
fn main() {
let foo_bar = 1;
format_args!("{foo_bar}");
}
```
rustbot
added
the
S-waiting-on-review
ShoyuVanilla
approved these changes
Dec 9, 2025
rustbot
removed
the
S-waiting-on-review
lnicola
changed the title
format!("{{{$0") and underscore
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Example
Before this PR
No complete
After this PR
Before this PR
No complete
After this PR