P4merge location1/10/2024 Sometimes, I find it easier to omit the -p option in the previous commands, and instead just review the entire diff for both the target branch and the current branch since they diverged: In this case HEAD is just a shorthand for the pre-merge state of the current branch. git log HEAD -follow -p - path/to/file.since the merge base), I use the following commands respectively: To inspect both the target branch and the current branch since they diverged (i.e. I find that the most powerful command for this inspection is git log -follow -p - file, which shows the history of the file (including the history beyond renames) with diffs for each commit. This helps me better understand (or simply remember!) each branch’s intent when modifying the file. I then inspect the development history (since the branches diverged) for each file with merge conflicts. As mentioned previously, the merge base is essentially the commit before the two branches forked. If the merge results in conflicts, I start by finding the merge base using the git merge-base command. You can abort an in-progress merge using the git merge -abort command. This allows you to easily abandon your merge at any point without losing any of your work. If you have work in progress, either commit it to a temporary branch or stash it. However, sometimes both branches change the same part of the same file, resulting in merge conflicts.įirst of all, you should always make sure your working directory is clean before merging. Git is smart, and non-overlapping changes (areas of code modified by one branch but not that other) are automatically incorporated into the final merged result. Git uses the merge base to identify what changed since the branches diverged. The merge base is essentially the most recent common ancestor (often this is the commit before the two branches forked). In a three way merge, Git’s merge algorithm uses the current branch, the target branch, and their merge base in order to incorporate changes from the target branch into the current branch. In those cases, a 3-way merge is required, which uses a dedicated commit to bring together the two histories. However, a fast-forward merge is not possible if the branches have diverged. In this case, instead of actually merging the branches, Git simply moves (or fast forwards) the current branch tip up to the target branch tip. There are two types of merges: fast-forward merges and 3-way merges.įast forward merges occur when the tip of the current branch is a direct ancestor of the target branch. The branch being merged (aka the target branch) will not be affected. When merging, Git always merges into the current branch. If you’re already fluent in Git, feel free to skip to the strategies and tools section.Īs Atlassian’s branching tutorial explains “Merging is Git’s way of putting a forked history back together again.”Ī Git merge is run via the command git merge. gitconfig settings p4merge settingsĬmd = /Applications/p4merge.app/Contents/MacOS/p4merge \"$LOCAL\" \"$REMOTE\"Ĭmd = /Applications/p4merge.There are many good online tutorials that cover Git merging, so I’ll just review the basics. So is this caused because p4merge doesn't support directory diff? is there any way to fix this?īTW, this is my. '/var/folders/6s/6sCbckgPGH42yLSh2eXveE+++TI/-Tmp-/git-difftool.9rgKV/right' ![]() '/var/folders/6s/6sCbckgPGH42yLSh2eXveE+++TI/-Tmp-/git-difftool.9rgKV/left' But when I try to let it do a directory diff like git difftool -d it pops up an error dialog which says: I can use p4merge as a difftool with git difftool it works well. I am trying to use p4merge as my diff/merge tool in git.
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