[Dodothereal]

Summary

Tab-width compensation currently subtracts from the shared wrap_summaries and wrap_descriptions options. Each tab-indented docstring shrinks the widths available to later docstrings and files. With --tab-width 4 --wrap-summaries 40 --wrap-descriptions 40, thirteen identical function docstrings can even split the quote delimiters and produce invalid Python.

Calculate the adjusted widths locally instead. The regression tests cover repeated docstrings and files, tab widths 4/8, preserved indentation, disabled wrapping, valid Python, and idempotence.

Validation

Read-only native-cloud validation on Python 3.12.14:

• New regressions: 24 failures before the fix, 24 passes after.
• Available pytest subset: 658 passed, 3 skipped, 82 deselected. The unchanged baseline subset had 634 passed and the same skips/deselections.
• 192 stdin CLI cases passed, including LF/CRLF and zero-width combinations.
• Black 26.3.1, Ruff 0.15.11, and the repository-pinned docformatter hook passed.

The 82 filesystem-dependent tests, full tox/pre-commit runs, and other interpreters were not run under the read-only/disk-full constraint. isort, mypy, and pydocstyle were unavailable. This is not a full-suite pass.

Prepared with OpenAI Codex assistance.