Nick Douglas. Staff Writer, Lifehacker Nick has been writing online for 11 years at sites like Urlesque, Gawker, the Daily Dot, and Slacktory. Git Conflict Resolution. By Ted Felix Mar 15, 2016. The conflict resolution process in git is slightly different for each git command. This tutorial will walk you. Lifehacker. Nick Douglas. Staff Writer, Lifehacker Nick has been writing online for 1. Urlesque, Gawker, the Daily Dot, and Slacktory. Create Patch Git Gui' title='Create Patch Git Gui' />He lives in Park Slope with his wife and their books. Git Conflict Resolution. By Ted Felix. Mar 1. The conflict resolution process in git is slightly different for each git command. This tutorial will walk you through the major variations. The man page for git merge1 gives the most information about the conflict resolution process. Ew_219038.png' alt='Create Patch Git Gui' title='Create Patch Git Gui' />See the two sections HOW CONFLICTS ARE PRESENTED and HOW TO RESOLVE CONFLICTS. However, rebase, am, and apply also have a conflict resolution process that is different, but not as well documented. Note, however, that the documentation for git improves continuously, so it is a good idea to read through it to see whats there. Which commands might give us conflicts The mergy ones, of course Git Version. Git is constantly improving. For reference, the output of the commands in this document was generated using the following git version. Setup merge. conflictstyle diff. Before diving into conflict resolution, we need to take a look at the merge. It is documented in git config1 along with several other merge. Heres an example. First, lets go with the default value of merge. This gives us two way conflict resolution markers that only show the current state of each branch. HEAD. Hello, master change. Hello, branch b. 1 change. Switching to diff. And we get three way conflict resolution markers that include the original state along with the current state of each branch. HEAD. Hello, master change. Hello, Original. Hello, branch b. The original file before changes had Hello, Original. The master HEAD branch has Hello, master change., and the b. Hello, branch b. 1 change. This three way diff can be very helpful in determining what really changed, so I recommend working with merge. Even more helpful is a GUI merge tool like kdiff. See git mergetool below for details. Heres the script I use to generate a set of conflicts to play with. This script will set up a git repo with interesting conflicts in. Run only in an empty directory. Need to check for hello. Might be nice to do more than just one commit in each branch. This. will illustrate how the git commands behave when dealing with. Be careful not to destroy an existing repo. Create the files. EOF. LINE 4 This will not be changed by anyone. Hello, Original. hello. Goodbye, Original. Add them to the index stage them for commit. Initial Commit. In a new branch b. Make some changes. LINE 2LINE 2 Branch b. LINE 3LINE 3 Branch b. An additional commit to make things a little more interesting. Change branch b. 1, mergetool. Originalbranch b. Originalbranch b. Commit the changes. Change branch b. 1, hibye. Back in master. git checkout master. Make some conflicting changes. LINE 1LINE 1 Branch master changed this. LINE 3LINE 3 Branch master changed this. Originalmaster change hello. Originalmaster change goodbye. Commit the changes. Change master. git merge is the mergiest of all the mergy git commands. Even if you mainly use rebase or am, its a good idea to spend some time getting familiar with how to resolve conflicts with git merge. Much of what you learn here will carry over to the other mergy commands. Just keep in mind that there are subtle differences that can be quite annoying. Merge. Given the setup described in Some Conflicts above, lets try to merge b. Its important to note that merging results in a new merge commit that has two parents. So a conflict in this process halts the creation of that commit. Our goal is to resolve the conflicts, stage add the files, and complete the commit. Auto merging mergetool. CONFLICT content Merge conflict in mergetool. Auto merging hello. CONFLICT content Merge conflict in hello. Auto merging goodbye. CONFLICT content Merge conflict in goodbye. Star Wars Jedi Outcast Windows 7 Patch. Automatic merge failed fix conflicts and then commit the result. Merge lets us know weve got some conflicts. On branch master. You have unmerged paths. Unmerged paths. use git add lt file. Note that git also gives us some basic instructions for dealing with the situation fix conflicts and run git commit. Use git diff to examine the conflicts in a file. HEAD. Hello, master change. Hello, Original. Hello, branch b. Resolve The Conflicts. At this point, we can edit the conflicting files and resolve the conflicts manually. If there are a large number of conflicts git mergetool and a GUI merge tool like kdiff. See the git mergetool section for details. Git offers a few simple conflict resolution functions. We can take all of the changes from the branch we are merging into master by using checkout theirs. Hello, branch b. 1 change. We can also go with all the changes from master by using checkout ours. Hello, master change. If conflict resolution gets out of hand in a file and we want to start over, checkout m will undo our changes. Hello, master change. Hello, Original. Hello, branch b. There is no redo, so if youve spent considerable time working on the conflicts in a file, think carefully before doing this. Lets go with theirs for hello. So, lets add hello. On branch master. You have unmerged paths. Changes to be committed. Unmerged paths. use git add lt file. Lets go ahead and resolve the rest of the conflicts by going with either ours or theirs. On branch master. All conflicts fixed but you are still merging. Changes to be committed. Complete The Commitgit status shows us that there are no more unmerged paths unresolved conflicts, so we can finish the merge by committing. Resolve Merge Conflicts. Resolve Merge Conflicts. Aborting a Merge. Use abort. git merge abort. This takes you back to where you were before you tried the merge. Be very careful with this as it loses any work you may have done in your working copy and anything you might have staged in the index. If you are part way through a merge, this might be a little extreme unless you really just want to lose it all. Summary. When dealing with a conflict in git merge Use git status and git diff to find out what went wrong. Resolve the conflicts by any of the following methods. Edit each conflicting file with your favorite editor. GUI tool like kdiff. BE CAREFULgit add the resolved files. If things get hosed, use git merge abort to start over before the merge. BE CAREFULgit commit to finish and get out of merge mode. As long as you have kdiff. If not, you can specify the tool you want as an option. Or you can make the setting persistent. Note kdiff. 3 isnt the only choice youve got. But it is one of the best. Try it first, then try the others and youll see what I mean. I tested meld for this as that is what I usually use for diffs. Meld was incapable of dealing with the conflicts in my test scenario. It also did not do any merging for me at all. The file mergetool. Some Conflicts script above is specifically designed to test the capabilities of git mergetool. After running that script, try a merge and then try git mergetool. Normal merge conflict for mergetool. Hit return to start merge resolution tool kdiff. Note that it will prompt us to resolve conflicts for each file. Hit enter and kdiff. Click the screenshot above for a full size version. Across the top are three versions of the file. The original A, the master branch B, and the b. C. At the bottom is the merged version with conflicts marked.