rustfmt removes comment between `impl` keyword and type name in impl block
Open
Nobody has claimed this yet.
A-comments
- Dominant language
- Rust
- Stars
- 7k
- Forks
- 1.1k
- Avg merge
- 2d 13h
- Merged PRs (30d)
- 24
Description
What version are you using?
Rust / Cargo 1.72.0
What did you do?
-
Wrote this code:
impl /* CustomAccountInterface for */ Contract {} -
Formatted it with
cargo fmt.
What did you expect to see?
impl /* CustomAccountInterface for */ Contract {}
What did you see instead?
Rustfmt removed my code comment.
impl Contract {}
Discussion
Formatting shouldn't be destructive, but removing comments is destructive.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with the minimal Rust snippet in the issue and run it through cargo fmt to reproduce the comment removal. Trace rustfmt's handling of comments between impl and the type name, then add coverage showing that the comment remains after formatting.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- rust
- Domain
- tooling
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Clearly specified
- Newbie friendliness
- 45/100