Fix error message for invalid single-dash multi-char option#3270

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ReinerBRO wants to merge 1 commit intopallets:mainfrom

ReinerBRO:fix-multichar-shortopt-error-2779

ReinerBRO commented Mar 18, 2026 •

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Summary

keep short-option cluster parsing behavior unchanged
when a single-dash multi-character option exists (for example -dbg) and a longer invalid token like -dbgwrong is passed, report the missing option as -dbg instead of -d
add a regression test for this case

Fixes #2779.

Testing

PYTHONPATH=src python -m pytest tests/test_options.py -k 'unknown_options or single_dash_multichar'


          Fix unknown single-dash multichar option error message

3a7c9d9

davidism closed this

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