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Use levenshtein distance for CLI flags #159482

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#159568
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Use levenshtein distance for CLI flags#159482
#159568
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chenyukang
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A-CLIArea: Command-line interface (CLI) to the compilerA-diagnosticsArea: Messages for errors, warnings, and lintsD-lack-of-suggestionDiagnostics: Adding a (structured) suggestion would increase the quality of the diagnostic.D-papercutDiagnostics: An error or lint that needs small tweaks.D-terseDiagnostics: An error or lint that doesn't give enough information about the problem at hand.P-lowLow priorityT-compilerRelevant to the compiler team, which will review and decide on the PR/issue.

Description

@estebank
estebank
opened on Jul 18, 2026

Code

//@ compile-flags: -Copt-leve=2
//~? ERROR unknown codegen option: `opt-leve`

fn main() {}

Current output

error: unknown codegen option: `opt-leve`

Desired output

error: unknown codegen option: `opt-leve`
 |
 = help: you might have meant to use `--opt-level=<N>`

Rationale and extra context

No response

Other cases



Rust Version


1.97


Anything else?


No response
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A-CLIArea: Command-line interface (CLI) to the compilerA-diagnosticsArea: Messages for errors, warnings, and lintsD-lack-of-suggestionDiagnostics: Adding a (structured) suggestion would increase the quality of the diagnostic.D-papercutDiagnostics: An error or lint that needs small tweaks.D-terseDiagnostics: An error or lint that doesn't give enough information about the problem at hand.P-lowLow priorityT-compilerRelevant to the compiler team, which will review and decide on the PR/issue.
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