fix: rename "Unknown option" to "unrecognized option" for diff and cmp#179
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sylvestre merged 2 commits intouutils:mainfrom Feb 28, 2026
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Fixes uutils#178 Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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## main #179 +/- ##
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Ryujiyasu
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Use single quotes and remove colon to match GNU diff/cmp output: `unrecognized option '--foobar'` instead of `unrecognized option: "--foobar"` Also use `contains` instead of `starts_with` in the integration test to handle the command prefix (e.g. `cmp: unrecognized option ...`). Follow-up to uutils#178 / uutils#179. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Summary
Unknown optiontounrecognized optionin bothdiffandcmpcommandsFixes #178
Test plan
cargo test— all 125 unit tests and 21 integration tests passdiffutils diff --foobaroutputsunrecognized option: "--foobar"diffutils cmp --foobaroutputsunrecognized option: "--foobar"🤖 Generated with Claude Code