-# Thanks !
-
-Thanks for your feedback & contributions to the
-[collectd project](https://collectd.org/) !
-
-## Need help using collectd ?
-
-Please use the
-[collectd mailing list](http://mailman.verplant.org/listinfo/collectd) or the
-[#collectd IRC channel](https://webchat.freenode.net/?channels=#collectd).
-We'd like to keep the github issue tracker for bugreports and patch reviews.
-
-## Found a bug ?
-
-Please mention the exact collectd version you're using, how it was installed
-(built from source, or installed from packages. Where was it downloaded
-from). Which operating system/architecture, distribution and version are you
-running collectd on.
-
-If collectd crashes, try to get a
-[stack trace](https://collectd.org/wiki/index.php/Core_file).
-
-## Fixed a bug ? Want to add a feature ?
-
-Using git/github to submit changes is not mandatory. Sending patches to the
-[mailing-list](http://mailman.verplant.org/listinfo/collectd) is also fine.
-In both cases, take a quick look at the
-[submission guidelines](https://collectd.org/wiki/index.php/Submitting_patches)
-and the [coding style recommendations](https://collectd.org/wiki/index.php/Coding_style).
-
-Please try to submit **bugfixes** to the
-[oldest release branch](https://github.com/collectd/collectd/milestones) on
-which the bug is found, so that it gets included in every future **bugfix
-release**.
-
-Please try to submit **new features** to the master branch (which will become
-the next **feature release**).
-
+# Contribution guidelines
+
+Thanks for taking the time to contribute to the [collectd
+project](https://collectd.org/)! This document tries to give some guidance to
+make the process of contributing to *collectd* as pleasant as possible.
+
+## Bug reports
+
+Please report bugs as [GitHub
+Issues](https://github.com/collectd/collectd/issues). Try to answer the
+following questions:
+
+* Which version of *collectd* are you using?
+* Which operating system (distribution) are you using at which version?
+* What is the expected behavior / output?
+* What is the actual (observed) behavior / output?
+* How can we reproduce the problem you're having?
+* If *collectd* crashes, try to get a
+ [stack trace](https://collectd.org/wiki/index.php/Core_file).
+
+Please monitor your issue for a couple of days and reply to questions. To keep
+the project manageable, we have to do some housekeeping; meaning we will close
+issues that have become stale.
+
+## Code contributions
+
+Please open a [GitHub Pull Request](https://github.com/collectd/collectd/pulls)
+(PR) to contribute bug fixes, features, cleanups, new plugins, … Patches sent to
+the mailing list have a tendency to fall through the cracks.
+
+* *Focus:* Fix *one thing* in your PR. The smaller your change, the faster it
+ will be reviewed and merged.
+* *Coding style:* Please run `clang-format -style=file -i $FILE` after editing
+ `.c`, `.h` and `.proto` files. If you don't want to install *clang-format*
+ locally or your version produces a different result than the formatting
+ check on Github, use `contrib/format.sh` to format files using the same web
+ service used by our check.
+* *Documentation:* New config options need to be documented in two places: the
+ manpage (`src/collectd.conf.pod`) and the example config
+ (`src/collectd.conf.in`). New plugins need to be added to the `README` file.
+* *Continuous integration:* Once your PR is created, our continuous
+ integration environment will try to build it on a number of platforms. If
+ this reports a failure, please investigate and fix the problem. We will at
+ best do a very casual review for failing PRs.
+* *Don't rebase:* Rebasing your branch destroys the review history. If a review
+ takes a long time, we may ask you to rebase on a more recent *master*, but
+ please don't do it without being asked.
+* *types.db:* One of the most common mistakes made by new contributors is the
+ addition of (many) new *types* in the file `src/types.db`. The majority of
+ usecases can be met with one of the existing entries. If you plan to add new
+ entries to `src/types.db`, you should talk to us early in the design
+ process.
+
+## Other resources
+
+* [Mailing list](http://mailman.verplant.org/listinfo/collectd)
+* [#collectd IRC channel](https://webchat.freenode.net/?channels=#collectd)
+ on *freenode*.
+* [Old patch submission guideline](https://collectd.org/wiki/index.php/Submitting_patches)
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