We'd love to accept your patches and contributions to this project. There are just a few small guidelines you need to follow.
Contributions to this project must be accompanied by a Contributor License Agreement. You (or your employer) retain the copyright to your contribution; this simply gives us permission to use and redistribute your contributions as part of the project. Head over to https://cla.developers.google.com/ to see your current agreements on file or to sign a new one.
You generally only need to submit a CLA once, so if you've already submitted one (even if it was for a different project), you probably don't need to do it again.
Please file issues before doing substantial work; this will ensure that others don't duplicate the work and that there's a chance to discuss any design issues.
Changes only tweaking style are unlikely to be accepted unless they are applied consistently across the project. Most of the code style is derived from the Google Style Guides for the appropriate language and is generally not something we accept changes on (as clang-format and clang-tidy handle that for us). Improvements to code structure and clarity are welcome but please file issues to track such work first.
All submissions, including submissions by project members, require review. We use GitHub pull requests (PRs) for this purpose. Consult GitHub Help for more information on using pull requests.
We use a GitHub integration to import PRs into our upstream (Google internal) source code management. Once it is approved internally, each PR will be merged into the master branch as a single commit by the same tooling. The description will match the PR title followed by the PR description. Accordingly, please write these as you would a helpful commit message. Please also keep PRs small (focused on a single issue) to streamline review and ease later culprit-finding.
Our documentation on repository management has more information on some of the oddities in our repository setup and workflows.
This project follows Google's Open Source Community Guidelines.