[shenxianpeng]

Before: the site describes 2.20.4. The six pre-commit snippets pin rev: v2.20.4, the changelog stops at v2.20.4, and two pages describe behaviour 2.20.5 changed:

• "Checking the committer" does not say the author checks were skipped on a repository's first commit.
• CC017 says the advice names user.* and GIT_AUTHOR_*, and adds author.name / author.email as a separate hint.

After: the site describes 2.20.5, published 2026-11-11.

• All six snippets pin rev: v2.20.5.
• The changelog has a v2.20.5 entry (four lines) and a Highlights row.
• "Checking the committer" says the identity is checked on a first commit from 2.20.5 on.
• CC017 lists the four settings the advice itself now names.

What the released 2.20.5 prints in the two cases:

$ git init -q . && git config user.name claude   # no commit yet, author_name_pattern set
$ commit-check --author-name
✖ Commit rejected by Commit Check · 1 check failed

✖ CC101 author-name failed: claude
  The committer name seems invalid
  Suggest: git config user.name 'Your Name'
  Docs:    https://commit-check.com/rules/#cc101

$ echo "feat: add streaming support" | commit-check -m   # author.name is Claude, ai_attribution = "forbid"
✖ Commit rejected by Commit Check · 1 check failed

✖ CC017 ai-author failed: Claude <noreply@anthropic.com>
  An AI tool is the commit author: Claude Code
  Suggest: Commit as yourself: set git config user.name and user.email to your own, and unset author.name, author.email, GIT_AUTHOR_NAME and GIT_AUTHOR_EMAIL if a tool set them; a commit that already exists then needs git commit --amend --reset-author
  Docs:    https://commit-check.com/rules/#cc017

2.20.4 printed ⊘ skipped (not validated): author-name for the first.

How

• "About half the time to start" in the changelog is measured on the two released wheels with commit-check -m <file>: 480M instructions on 2.20.4 against 244M on 2.20.5 (callgrind), 119 ms against 68 ms wall time (median of 25 runs).
• tests/docs_sync_test.py passes against the installed 2.20.5 (18 tests) and mkdocs build --strict is clean.
• Blog posts and the two homepage transcripts recorded with 2.20.4 are left as they are.

Summary by CodeRabbit

• Documentation
  • Added v2.20.5 release highlights covering first-use compilation of AI signature patterns, PyPI provenance attestations, author checks on a repository’s first commit, and updated CC017 guidance.
  • Clarified which author identity settings can override user.name and user.email, and when to unset them.
  • Updated pre-commit configuration examples to use v2.20.5.

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[coderabbitai]

No actionable comments were generated in the recent review.

Walkthrough

The documentation adds the v2.20.5 release notes, updates guidance about first-commit identity checks and CC017, and changes pre-commit examples to pin v2.20.5.

Changes: v2.20.5 documentation

Layer / File(s)	Summary
Release notes docs/changelog.md	The changelog adds v2.20.5 highlights and a release entry covering AI signature pattern compilation, PyPI provenance attestations, first-commit identity checks, and CC017 guidance.
Identity-check guidance docs/example.md, docs/rules.md	The committer documentation describes identity checks on a repository’s first commit. CC017 guidance lists author.name, author.email, GIT_AUTHOR_NAME, and GIT_AUTHOR_EMAIL as values to unset, and says they take precedence over user.name and user.email.
Pre-commit revision pins docs/compare/tools.md, docs/configuration.md, docs/example.md, docs/guides/pre-commit.md	The pre-commit examples change their pinned revision from v2.20.4 to v2.20.5.

Estimated code review effort: 2 (Simple) | ~8 minutes

Change: Other

Possibly related PRs

• commit-check/commit-check.com#66: Updates release pins and the changelog for an earlier Commit Check release.
• commit-check/commit-check.com#76: Adds the CC017 documentation for AI-authored commits and author identity checks.
• commit-check/commit-check.com#67: Adds the “Coming from git” section and its pre-commit example.

Merge Risk: Minimal · up to 99c9c

The documentation updates present no identified merge-blocking risk.

Pre-merge checks: 4

Check name	Status	Explanation
Title check		The title clearly and concisely describes the main changes: updating documentation to pin v2.20.5 and adding its changelog entry.
Linked Issues check		Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.
Description Check		Check skipped - CodeRabbit’s high-level summary is enabled.

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Commits

Reviewing files that changed from the base of the PR and between 8337fe5 and 99c9ca9.

Files selected for processing: 6

• docs/changelog.md
• docs/compare/tools.md
• docs/configuration.md
• docs/example.md
• docs/guides/pre-commit.md
• docs/rules.md

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