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fix(linter): no-useless-escape: do not crash on backslash character #6048

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camchenry
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@camchenry camchenry commented Sep 24, 2024

Fixes #6046

Unlike other escape sequences such as /\w/, this is not actually parsed as a single character: /\c/ so we incorrectly try to get the character before the backslash, which doesn't exist.

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@github-actions github-actions bot added the A-linter Area - Linter label Sep 24, 2024
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@camchenry camchenry marked this pull request as ready for review September 24, 2024 22:31
@camchenry camchenry changed the title fix(linter): no-useless-escape: do not crash on \c fix(linter): no-useless-escape: do not crash on backslash character Sep 24, 2024
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@Boshen This is another panic fix, if you were considering another patch release similar to 0.9.8.

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codspeed-hq bot commented Sep 24, 2024

CodSpeed Performance Report

Merging #6048 will not alter performance

Comparing 09-24-fix_linter_no-useless-escape_do_not_crash_on_c_ (c047d42) with main (58d333a)

Summary

✅ 29 untouched benchmarks

@camchenry camchenry requested a review from DonIsaac September 24, 2024 22:50
@DonIsaac DonIsaac added C-bug Category - Bug 0-merge Merge with Graphite Merge Queue labels Sep 24, 2024
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Merge activity

  • Sep 24, 7:21 PM EDT: The merge label '0-merge' was detected. This PR will be added to the Graphite merge queue once it meets the requirements.
  • Sep 24, 7:21 PM EDT: DonIsaac added this pull request to the Graphite merge queue.
  • Sep 24, 7:32 PM EDT: DonIsaac merged this pull request with the Graphite merge queue.

…#6048)

Fixes #6046

Unlike other escape sequences such as `/\w/`, this is not actually parsed as a single character: `/\c/` so we incorrectly try to get the character before the backslash, which doesn't exist.
@DonIsaac DonIsaac force-pushed the 09-24-fix_linter_no-useless-escape_do_not_crash_on_c_ branch from 3af8380 to c047d42 Compare September 24, 2024 23:25
@graphite-app graphite-app bot merged commit c047d42 into main Sep 24, 2024
26 checks passed
@graphite-app graphite-app bot deleted the 09-24-fix_linter_no-useless-escape_do_not_crash_on_c_ branch September 24, 2024 23:32
@oxc-bot oxc-bot mentioned this pull request Sep 27, 2024
Boshen added a commit that referenced this pull request Sep 27, 2024
## [0.9.9] - 2024-09-27

### Bug Fixes

- bd8f786 linter: Rule and generic filters do not re-configure existing
rules (#6087) (DonIsaac)
- c5cdb4c linter: Disable all rules in a plugin when that plugin gets
turned off (#6086) (DonIsaac)
- 6c855af linter: Only write fix results if source code has changed
(#6096) (DonIsaac)
- 8759528 linter: Category filters not re-configuring already-enabled
rules (#6085) (DonIsaac)
- c2616f7 linter: Fix panic in fixer for `oxc/only-used-in-recursion`
(#6070) (camc314)
- 3da3845 linter: Malformed snippets in `eslint/for-direction` docs
(#6060) (DonIsaac)
- c047d42 linter: `no-useless-escape`: do not crash on backslash
character (#6048) (camchenry)
- 6f76ebe linter: Ignore invalid or partial disable directives (#6045)
(camchenry)
- 09a24cd linter: Fix false positives for generics in
`no-unexpected-multiline` (#6039) (camchenry)
- d05fd20 linter: Newline in type parameters causing false positive in
`no-unexpected-multiline` (#6031) (DonIsaac)
- 01b9c4b npm/oxlint: Make bin/oxc_language_server an executable (#6066)
(Boshen)

### Performance

- f8464a3 linter: `no-magic-numbers` remove redudant checks in
`is_array_index` (#6033) (Alexander S.)
- c16ae60 linter: `jest/prefer-hooks-in-order`: rewrite rule to allocate
less and iterate fewer times (#6030) (camchenry)

### Documentation

- a4fdf1b linter: Improve docs for promise rules (#6051) (dalaoshu)
- 21cdb78 linter: Fix incorrect "bad" example in
`only-used-in-recursion` (#6029) (Boshen)

### Refactor

- 1f92d61 linter: `jest/prefer-hooks-in-order`: improve diagnostic
messages (#6036) (camchenry)

### Testing

- 55949eb linter: Add `OxlintRules::override_rules` tests (#6081)
(DonIsaac)
- 1a6923a linter: Add filter parsing test cases (#6080) (DonIsaac)
- 58d333a linter: Add more test cases for disable directives (#6047)
(camchenry)

---------

Co-authored-by: Boshen <1430279+Boshen@users.noreply.github.com>
Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>
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Panic inside crates/oxc_linter/src/rules/eslint/no_useless_escape.rs
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