If you are simply editing a more recent commit or your change is small, simply making the change at HEAD and then moving the commit after you have tested it may be easier.
This method has the benefit of being able to compile to test your change without messing with your API HEAD.
This is the automated way of doing Method 2. Basically, you make your changes at HEAD, but use fixup commits to modify earlier patches and git will rebase the commits to the right place and squash them.
1. Make your change while at HEAD
1. Make a fixup commit. `git commit -a --fixup <hashOfPatchToFix>`. You can get the hash by looking at `git log` or `git blame`, your IDE can assist you too.
Alternatively, if you only know the name of the patch, you can do `git commit -a --fixup "Subject of Patch name"`
1. Rebase with autosquash: `git rebase --autosquash -i upstream/upstream`. It will move your fixup commit to the right place.
1. Type `./paper rebuild` in the main directory
- This will modify the appropriate patches based on your commits
We'll accept changes that make sense. You should be able to justify their existence, along with any maintenance costs that come with them. Remember, these changes will affect everyone who runs Paper, not just you and your server.
While we will fix minor formatting issues, you should stick to the guide below when making and submitting changes.
When submitting patches to Paper, we may ask you to add notes to the patch header.
While we do not require it for all changes, you should add patch notes when the changes you're making are technical or complex.
It is very likely that your patch will remain long after we've all forgotten about the details of your PR, patch notes will help
us maintain it without having to dig back through GitHub history looking for your PR.
These notes should express the intent of your patch, as well as any pertinent technical details we should keep in mind long-term.
Ultimately, they exist to make it easier for us to maintain the patch across major version changes.
If you add a long message to your commit in the Paper-Server/API repos, the rebuildPatches command will handle these patch
notes automatically as part of generating the patch file. Otherwise if you're careful they can be added by hand (though you should be careful when doing this, and run it through a patch and rebuild cycle once or twice).
```patch
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Shane Freeder <theboyetronic@gmail.com>
Date: Sun, 15 Oct 2017 00:29:07 +0100
Subject: [PATCH] revert serverside behavior of keepalives
This patch intends to bump up the time that a client has to reply to the
server back to 30 seconds as per pre 1.12.2, which allowed clients
more than enough time to reply potentially allowing them to be less
tempermental due to lag spikes on the network thread, e.g. that caused
by plugins that are interacting with netty.
We also add a system property to allow people to tweak how long the server
will wait for a reply. There is a compromise here between lower and higher
values, lower values will mean that dead connections can be closed sooner,
whereas higher values will make this less sensitive to issues such as spikes
from networking or during connections flood of chunk packets on slower clients,
at the cost of dead connections being kept open for longer.
In an effort to make future updates easier on ourselves, Paper tries to use obfuscation helpers whenever possible. The purpose of these helpers is to make the code more readable. These helpers should be be made as easy to inline as possible by the JVM whenever possible.
An obfuscation helper to get an obfuscated field may be as simple as something like this:
While they may not always be done in exactly the same way each time, the general goal is always to improve readability and maintainability, so use your best judgement.
## Configuration files
To use a configurable value in your patch, add a new entry in either ```PaperConfig``` or ```PaperWorldConfig```. Use the former if a value must remain the same throughout all worlds, or the latter if it can change between worlds. The latter is preferred whenever possible.
Notice that the field is always public, but the setter is always private. This is important to the way the configuration generation system works. To access this value, reference it as you would any other static value:
Again, notice that the field is always public, but the setter is always private. To access this value, you'll need an instance of the ```net.minecraft.World``` object:
