rust-lang / rust-lang/rustfmt

removes comment after import

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#7,051 4 comments 0 reactions 0 assignees View on GitHub

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A-comments A-imports C-bug E-easy I-unexpectedly-removes-code
Dominant language
Rust
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Forks
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Avg merge
2d 13h
Merged PRs (30d)
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Description

use std /* goodbye */;

rustfmt a.rs
=>

use std;

I would expect the comment to stay 🤔

rustfmt 1.10.0-nightly (c54751567b 2026-08-22)

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Research direction

Reproduce the behavior with rustfmt 1.10.0-nightly using the reported use std /* goodbye */; snippet. Trace the import-formatting path that removes the comment and check existing formatter tests for a suitable regression-test location. Done means the comment is preserved after formatting and the regression is covered by a test.

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
Active
Clarity
Clearly specified
Newbie friendliness
70/100

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