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Rustc misunderstands when an @ is missing in a pattern and the error message is confusing #88404

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#117998
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Rustc misunderstands when an @ is missing in a pattern and the error message is confusing#88404
#117998
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A-diagnosticsArea: Messages for errors, warnings, and lintsA-patternsRelating to patterns and pattern matchingA-slice-patternsArea: Slice patterns, https://github.com/rust-lang/rust/issues/23121A-suggestion-diagnosticsArea: Suggestions generated by the compiler applied by `cargo fix`C-enhancementCategory: An issue proposing an enhancement or a PR with one.D-confusingDiagnostics: Confusing error or lint that should be reworked.T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.

Description

@Lokathor
Lokathor
opened on Aug 27, 2021

playground

I should have typed rest @ .., and to fix my problem I need to add the @ between rest and ..

Instead rustc tries to tell me three different ways that "rest.." is wrong, none of which are "hey did you forget the @ sign?"

Activity

  1. camelid
    added
    A-diagnosticsArea: Messages for errors, warnings, and lints
    A-patternsRelating to patterns and pattern matching
    A-slice-patternsArea: Slice patterns, https://github.com/rust-lang/rust/issues/23121
    A-suggestion-diagnosticsArea: Suggestions generated by the compiler applied by `cargo fix`
    D-confusingDiagnostics: Confusing error or lint that should be reworked.
    C-enhancementCategory: An issue proposing an enhancement or a PR with one.
    T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.
    on Aug 28, 2021
  2. estebank
    added a commit that references this issue on Nov 17, 2023

    On resolve error of `[rest..]`, suggest `[rest @ ..]`

    5c3e01a
  3. matthiaskrgr
    added a commit that references this issue on Nov 17, 2023

    Rollup merge of rust-lang#117998 - estebank:issue-88404, r=TaKO8Ki

    488c2aa
  4. bors
    closed this as completedin 5c3e01aon Nov 17, 2023
  5. rust-timer
    added a commit that references this issue on Nov 17, 2023

    Unrolled build for rust-lang#117998

    65f933b
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    A-diagnosticsArea: Messages for errors, warnings, and lintsA-patternsRelating to patterns and pattern matchingA-slice-patternsArea: Slice patterns, https://github.com/rust-lang/rust/issues/23121A-suggestion-diagnosticsArea: Suggestions generated by the compiler applied by `cargo fix`C-enhancementCategory: An issue proposing an enhancement or a PR with one.D-confusingDiagnostics: Confusing error or lint that should be reworked.T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.

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