mirror of https://github.com/zulip/zulip.git
153 lines
6.3 KiB
Markdown
153 lines
6.3 KiB
Markdown
# Create a pull request
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When you're ready for feedback, submit a pull request. Pull requests
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are a feature specific to GitHub. They provide a simple, web-based way
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to submit your work (often called "patches") to a project. It's called
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a *pull request* because you're asking the project to *pull changes*
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from your fork.
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If you're unfamiliar with how to create a pull request, you can check
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out GitHub's documentation on
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[creating a pull request from a fork][github-help-create-pr-fork]. You
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might also find GitHub's article
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[about pull requests][github-help-about-pr] helpful. That all said,
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the tutorial below will walk you through the process.
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## Work in progress pull requests
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In the Zulip project, we encourage submitting work-in-progress pull
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requests early and often. This allows you to share your code to make
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it easier to get feedback and help with your changes. Prefix the
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titles of work-in-progress pull requests with **[WIP]**, which in our
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project means that you don't think your pull request is ready to be
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merged (e.g. it might not work or pass tests). This sets expectations
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correctly for any feedback from other developers, and prevents your
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work from being merged before you're confident in it.
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## Create a pull request
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### Step 1: Update your branch with git rebase
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The best way to update your branch is with `git fetch` and `git rebase`. Do not
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use `git pull` or `git merge` as this will create merge commits. See [keep your
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fork up to date][keep-up-to-date] for details.
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Here's an example (you would replace *issue-123* with the name of your feature branch):
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```
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$ git checkout issue-123
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Switched to branch 'issue-123'
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$ git fetch upstream
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remote: Counting objects: 69, done.
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remote: Compressing objects: 100% (23/23), done.
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remote: Total 69 (delta 49), reused 39 (delta 39), pack-reused 7
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Unpacking objects: 100% (69/69), done.
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From https://github.com/zulip/zulip
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69fa600..43e21f6 master -> upstream/master
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$ git rebase upstream/master
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First, rewinding head to replay your work on top of it...
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Applying: troubleshooting tip about provisioning
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```
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### Step 2: Push your updated branch to your remote fork
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Once you've updated your local feature branch, push the changes to GitHub:
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```
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$ git push origin issue-123
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Counting objects: 6, done.
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Delta compression using up to 4 threads.
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Compressing objects: 100% (4/4), done.
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Writing objects: 100% (6/6), 658 bytes | 0 bytes/s, done.
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Total 6 (delta 3), reused 0 (delta 0)
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remote: Resolving deltas: 100% (3/3), completed with 1 local objects.
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To git@github.com:christi3k/zulip.git
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+ 2d49e2d...bfb2433 issue-123 -> issue-123
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```
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If your push is rejected with error **failed to push some refs** then you need
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to prefix the name of your branch with a `+`:
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```
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$ git push origin +issue-123
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Counting objects: 6, done.
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Delta compression using up to 4 threads.
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Compressing objects: 100% (4/4), done.
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Writing objects: 100% (6/6), 658 bytes | 0 bytes/s, done.
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Total 6 (delta 3), reused 0 (delta 0)
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remote: Resolving deltas: 100% (3/3), completed with 1 local objects.
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To git@github.com:christi3k/zulip.git
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+ 2d49e2d...bfb2433 issue-123 -> issue-123 (forced update)
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```
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This is perfectly okay to do on your own feature branches, especially if you're
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the only one making changes to the branch. If others are working along with
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you, they might run into complications when they retrieve your changes because
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anyone who has based their changes off a branch you rebase will have to do a
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complicated rebase.
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### Step 3: Open the pull request
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If you've never created a pull request or need a refresher, take a look at
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GitHub's article [creating a pull request from a
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fork][github-help-create-pr-fork]. We'll briefly review the process here.
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The first step in creating a pull request is to use your web browser to
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navigate to your fork of Zulip. Sign in to GitHub if you haven't already.
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Next, navigate to the branch you've been working on. Do this by clicking on the
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**Branch** button and selecting the relevant branch. Finally, click the **New
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pull request** button.
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Alternatively, if you've recently pushed to your fork, you will see a green
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**Compare & pull request** button.
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You'll see the *Open a pull request* page:
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![images-create-pr]
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Provide a **title** and first comment for your pull request. Remember to prefix
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your pull request title with [WIP] if it is a [work-in-progress][wip-prs].
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If your pull request has an effect on the visuals of a component, you might want
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to include a screenshot of this change or a GIF of the interaction in your first
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comment. This will allow reviewers to comment on your changes without having to
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checkout your branch; you can find a list of tools you can use for this over
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[here][screenshots-gifs].
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When ready, click the green **Create pull request** to submit the pull request.
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Note: **Pull request titles are different from commit messages.** Commit
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messages can be edited with `git commit --amend`, `git rebase -i`, etc., while
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the title of a pull request can only be edited via GitHub.
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## Update a pull request
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As you get make progress on your feature or bugfix, your pull request, once
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submitted, will be updated each time you [push commits][self-push-commits] to
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your remote branch. This means you can keep your pull request open as long as
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you need, rather than closing and opening new ones for the same feature or
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bugfix.
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It's a good idea to keep your pull request mergeable with Zulip upstream by
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frequently fetching, rebasing, and pushing changes. See [keep your fork up to
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date][keep-up-to-date] for details. You might also find this excellent
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article [How to Rebase a Pull Request][edx-howto-rebase-pr] helpful.
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And, as you address review comments others have made, we recommend posting a
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follow-up comment in which you: a) ask for any clarifications you need, b)
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explain to the reviewer how you solved any problems they mentioned, and c) ask
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for another review.
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[edx-howto-rebase-pr]: https://github.com/edx/edx-platform/wiki/How-to-Rebase-a-Pull-Request
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[github-help-about-pr]: https://help.github.com/articles/about-pull-requests/
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[github-help-create-pr-fork]: https://help.github.com/articles/creating-a-pull-request-from-a-fork/
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[images-create-pr]: ../images/zulip-open-pr.png
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[keep-up-to-date]: ../git/using.html#keep-your-fork-up-to-date
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[push-commits]: ../git/using.html#push-your-commits-to-github
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[screenshots-gifs]: ../tutorials/screenshot-and-gif-software.html
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[wip-prs]: #work-in-progress-pull-requests
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