New program git-test-mergetool.sh

[mernst]

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📥 Commits

Reviewing files that changed from the base of the PR and between 1d33a12 and cf2e842.

📒 Files selected for processing (2)

• README.md
• git-test-mergetool

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📝 Walkthrough

Walkthrough

Adds the git-test-mergetool shell script and documents it in README.md. The script creates a scratch bare repository with two clones, produces conflicting edits across two files and a clean merge in a third, pulls the divergent histories, and invokes the configured git mergetool.

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch gittestmergetool

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[coderabbitai]

Actionable comments posted: 4

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@git-test-mergetool.sh`:
- Line 23: Update the printf format strings generating test files in
git-test-mergetool.sh at lines 23-23, 36-36, and 44-44 to append a trailing
newline after the final line of each output, preserving all existing file
contents.
- Around line 7-10: Update the cd failure branch in git-test-mergetool.sh to
exit with an explicit non-zero status after printing the error message, rather
than relying on exit without an argument.
- Line 47: Update the git pull invocation in the test script to pass --no-rebase
and --no-ff, ensuring it always performs a non-fast-forward merge and ignores
user pull.rebase and pull.ff configuration.
- Around line 20-33: Update the clone and push sequence in the test setup: do
not create or pull into clone2 before clone1’s initial commit is pushed. Push
clone1’s current branch with upstream tracking using the equivalent of “git push
-u origin HEAD”, then clone the repository into clone2 and continue the existing
test flow.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

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ℹ️ Review info

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Configuration used: Path: .coderabbit.yaml

Review profile: ASSERTIVE

Plan: Pro

Run ID: ef6c3ea6-c451-415e-8414-67971c1f49ea

📥 Commits

Reviewing files that changed from the base of the PR and between ea91faa and 1d33a12.

📒 Files selected for processing (1)

• git-test-mergetool.sh

[mernst]

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