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1. The first line should be 50 characters or less and contain a short
   description of the change prefixed with the name of the changed
   subsystem (e.g. "net: add localAddress and localPort to Socket").
2. Keep the second line blank.
3. Wrap all other lines at 72 columns.

A good commit log looks like this:

```
subsystem: explaining the commit in one line

Body of commit message is a few lines of text, explaining things
in more detail, possibly giving some background about the issue
being fixed, etc etc.

The body of the commit message can be several paragraphs, and
please do proper word-wrap and keep columns shorter than about
72 characters or so. That way `git log` will show things
nicely even when it is indented.
```

The header line should be meaningful; it is what other people see when they
run `git shortlog` or `git log --oneline`.

Check the output of `git log --oneline files_that_you_changed` to find out
what subsystem (or subsystems) your changes touch.


### REBASE

Use `git rebase` (not `git merge`) to sync your work from time to time.

```
$ git fetch upstream
$ git rebase upstream/v1.x  # or upstream/master
```


### TEST

Bug fixes and features should come with tests.  Add your tests in the
`test/` directory. Each new test needs to be registered in `test/test-list.h`.

If you add a new test file, it needs to be registered in three places:
- `CMakeLists.txt`: add the file's name to the `uv_test_sources` list.
- `Makefile.am`: add the file's name to the `test_run_tests_SOURCES` list.
- `uv.gyp`: add the file's name to the `sources` list in the `run-tests` target.

Look at other tests to see how they should be structured (license boilerplate,
the way entry points are declared, etc.).

Check README.md file to find out how to run the test suite and make sure that
there are no test regressions.

### PUSH

```
$ git push origin my-feature-branch
```

Go to https://github.com/username/libuv and select your feature branch.  Click
the 'Pull Request' button and fill out the form.

Pull requests are usually reviewed within a few days.  If there are comments
to address, apply your changes in a separate commit and push that to your
feature branch.  Post a comment in the pull request afterwards; GitHub does
not send out notifications when you add commits.


[issue tracker]: https://github.com/libuv/libuv/issues
[libuv mailing list]: http://groups.google.com/group/libuv
[IRC]: http://webchat.freenode.net/?channels=libuv
[Google C/C++ style guide]: https://google.github.io/styleguide/cppguide.html
[project maintainers]: https://github.com/libuv/libuv/blob/master/MAINTAINERS.md