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CONTRIBUTING.md

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Contributions Guidelines

Code formatting

Try to follow the existing formatting. If there is no existing formatting, you may use clang-format with our included .clang-format configuration.

In general, in order of importance:

  • Make sure your IDE is not messing up line endings or whitespace and avoid using linters.
  • Prefer readability over dogma.
  • Keep to the existing formatting.
  • Indent with 4 space unless it's in a submodule.
  • Keep lists (of arguments, parameters, initializers...) as lists, not paragraphs. It should either read from top to bottom, or left to right. Not both.

Signing your work

In an effort to ensure that the code you contribute is actually compatible with the licenses in this codebase, we require you to sign-off all your contributions.

This can be done by appending -s to your git commit call, or by manually appending the following text to your commit message:

<commit message>

Signed-off-by: Author name <Author email>

By signing off your work, you agree to the terms below:

Developer's Certificate of Origin 1.1

By making a contribution to this project, I certify that:

(a) The contribution was created in whole or in part by me and I
    have the right to submit it under the open source license
    indicated in the file; or

(b) The contribution is based upon previous work that, to the best
    of my knowledge, is covered under an appropriate open source
    license and I have the right under that license to submit that
    work with modifications, whether created in whole or in part
    by me, under the same open source license (unless I am
    permitted to submit under a different license), as indicated
    in the file; or

(c) The contribution was provided directly to me by some other
    person who certified (a), (b) or (c) and I have not modified
    it.

(d) I understand and agree that this project and the contribution
    are public and that a record of the contribution (including all
    personal information I submit with it, including my sign-off) is
    maintained indefinitely and may be redistributed consistent with
    this project or the open source license(s) involved.

These terms will be enforced once you create a pull request, and you will be informed automatically if any of your commits aren't signed-off by you.

As a bonus, you can also cryptographically sign your commits and enable vigilant mode on GitHub.

Backporting to Release Branches

We use automated backports to merge specific contributions from develop into release branches.

This is done when pull requests are merged and have labels such as backport release-7.x - which should be added along with the milestone for the release.