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codeql/docs/pre-commit-hook-setup.md
Mathias Vorreiter Pedersen 11e2bc3b78 Respond to review comments.
2021-01-05 16:21:24 +01:00

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# CodeQL pre-commit-hook setup
As stated in [CONTRIBUTING](../CONTRIBUTING.md) all CodeQL files must be formatted according to our [CodeQL style guide](ql-style-guide.md). You can use our pre-commit hook to avoid committing incorrectly formatted code. To use it, simply copy the [pre-commit](../misc/scripts/pre-commit) script to `.git/modules/ql/hooks/pre-commit` and make sure that:
- The script is executable. On Linux and macOS this can be done using `chmod +x`.
- The CodeQL CLI has in added to your `PATH`.
The script will abort a commit that contains incorrectly formatted code in .ql or .qll files and print an error message like:
```
> git commit -m "My commit."
ql/cpp/ql/src/Options.qll would change by autoformatting.
ql/cpp/ql/src/printAst.ql would change by autoformatting.
```
If you prefer to have the script automatically format the code (and not abort the commit), you can replace the line `codeql query format --check-only` with `codeql query format --in-place` (and `exit $exitVal` with `exit 0`).