# Backspace Contributor License Agreement

Thank you for your interest in contributing to Backspace ("the Project"), owned
and maintained by **Jannis Braun** ("the Maintainer", "I", "me", or "my").

This Contributor License Agreement ("Agreement") governs the intellectual
property rights in Contributions made by any person or entity ("You") to the
Project. Backspace is a single-owner project: to keep the licensing of the
codebase unified in one hand, **You keep the copyright to your Contributions and
grant the Maintainer a broad exclusive license** to them, and in return the
Maintainer grants You a license to keep using your own work.

By submitting a Contribution to the Project (for example, by opening a pull
request) and by signing this Agreement through the Project's CLA bot, You accept
and agree to the following terms for all past and future Contributions You
submit.

## 1. Definitions

**"Contribution"** means any original work of authorship, including any
modification of or addition to an existing work, that You intentionally submit
to the Project in any form (including source code, object code, documentation,
configuration, designs, or assets) through any means, including pull requests,
patches, issues with attached code, or electronic communication, but excluding
any communication You conspicuously mark in writing as "Not a Contribution".

**"Submit"** means any act by which a Contribution is transferred to the Project,
including by version control systems, issue trackers, mailing lists, or
electronic messages, but excluding communication marked "Not a Contribution".

## 2. Grant of Exclusive License

You retain ownership of and all copyright in your Contributions. You hereby grant
the Maintainer a perpetual, worldwide, **exclusive**, royalty-free, irrevocable,
fully sublicensable, and transferable license to use, reproduce, modify, prepare
derivative works of, publicly display, publicly perform, distribute, relicense
(under any terms, including open-source and commercial licenses), sell, and
otherwise exploit your Contributions, by all means and in all media now known or
later developed, so that the Maintainer may offer the Project under both the
GNU AGPL-3.0 and one or more commercial licenses.

This grant covers all Contributions You have already submitted and all
Contributions You submit in the future, effective at the moment each is created.

## 3. Fallback (where an exclusive license is limited)

To the extent that the exclusive license in Section 2 is, in any jurisdiction,
narrower than stated or otherwise limited by law, You grant the Maintainer the
broadest license permissible there, and, only to the extent necessary to give
the Maintainer equivalent rights, assign such rights to the Maintainer, so that
the Maintainer obtains, as nearly as possible, the same rights as the exclusive
license in Section 2.

## 4. Patent License

You grant the Maintainer a perpetual, worldwide, non-exclusive, royalty-free,
irrevocable, sublicensable patent license (under any patent claims You can
license that are necessarily infringed by your Contribution alone or by
combination of your Contribution with the Project) to make, have made, use,
offer to sell, sell, import, and otherwise transfer your Contributions and the
Project.

## 5. License Back to You

The Maintainer grants You a perpetual, worldwide, non-exclusive, royalty-free,
irrevocable license to use, reproduce, modify, and distribute **the specific
Contributions You authored** for any purpose, including in your own other
projects. This license-back applies only to the material You personally created
and does not grant You any rights in the Project as a whole or in the
Contributions of others. It does not limit the Maintainer's rights under
Sections 2–4.

## 6. Moral Rights

To the fullest extent permitted by applicable law, You waive, and agree not to
assert, any moral rights (including rights of attribution and integrity) You may
have in your Contributions against the Maintainer or the Maintainer's licensees
and successors. Where such rights cannot be waived, You agree not to enforce
them in a way that interferes with the Maintainer's exercise of the rights
assigned and granted above.

## 7. Your Representations

You represent that:

1. Each of Your Contributions is Your original creation, and You have the full
   right and authority to grant the rights and licenses in this Agreement.
2. You are legally entitled to make these grants. If Your employer has rights
   to intellectual property You create, You represent that You have received
   permission to make the Contributions on behalf of that employer, or that Your
   employer has waived such rights for Your Contributions.
3. Each of Your Contributions does not, to the best of Your knowledge, violate
   any third party's copyrights, trademarks, patents, or other intellectual
   property rights.
4. If any Contribution includes or depends on third-party work, You will clearly
   identify it, along with any associated license or other restriction of which
   You are personally aware, in the Contribution itself or in the accompanying
   pull request.

## 8. No Obligation

You acknowledge that the Maintainer is under no obligation to use, merge, or
incorporate any Contribution. The decision to include any Contribution in the
Project rests solely with the Maintainer.

## 9. Disclaimer

Except for the representations in Section 7, Your Contributions are provided "as
is", without warranty of any kind, express or implied, including without
limitation any warranties of merchantability, fitness for a particular purpose,
title, or non-infringement.

## 10. Entity Contributions

If You are signing on behalf of a legal entity, You represent that You have the
authority to bind that entity and its affiliates to this Agreement, and the
terms "You" and "Your" refer to that entity and its affiliates.

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To sign this Agreement, comment on your pull request with **exactly** the
following sentence:

> I have read the CLA Document and I hereby sign the CLA

Your signature is recorded against your GitHub username and applies to all of
your current and future Contributions to the Project.
