No diff tool set in the preferences

Specifying --no-symlinks instructs git difftool to create copies instead. Specify a custom command for viewing diffs. When git-difftool is invoked with the -g or --gui option the default diff tool will be read from the configured diff. The --no-gui option can be used to override this setting. If diff. Errors reported by the diff tool are ignored by default. Use --trust-exit-code to make git-difftool exit when an invoked diff tool returns a non-zero exit code.

In this article we will configure winmerge as diff and merge tool in git but you can configure any other tool with same way. Before we start, make sure you have winmerge installed on your machine, you can download from here. After executing these commands you can use git difftool or git mergetool commands to open winmerge. You can configure git external diff and merge tool by directly updating.

Add following entries in the configuration file. For windows users. By default, every time you run git difftool command, git bash ask if you really want to launch external tool? The values are, as follows:. Go to Git Global Settings to configure this setting. Set Cryptographic network provider to the desired value, and select OK to save.

When Visual Studio performs a remote Git operation, the remote endpoint might reject the request because it requires credentials to be provided with the request. At that time, Git invokes a credential helper, which will return the credentials needed to perform the operation, and then will try the request again. The credential helper used corresponds to the git config credential. It is available at the global scope with the following values:. Set Credential helper to the desired value, and select OK to save.

Git will show diffs and merge conflicts in your preferred tools. The settings in this section correspond to the git config diff. To configure other diff and merge tools, use git config with the diff. You can use the Git files section in the Git Repository Settings scope to view and edit the gitignore and gitattributes files for your repository. You can use the Remotes pane under Git Repository Settings to configure the remotes for your repository.

This setting corresponds to the git remote command and allows you to add, edit, or remove remotes. To view all of your other Git configuration settings, you can open and view the configuration files themselves, or you can run git config --list to display the settings. The following settings manage Git-related preferences in Visual Studio, and are managed by Visual Studio instead of Git configuration files. All of the settings in this section are configured in the Git Global Settings page.

Default location configures the default folder in which repositories are cloned. By default, Visual Studio closes any open solution or folder when you switch to another repository. When it does so, it might also load the solution or folder of the new repository based on if you choose to Open folder in Solution Explorer when opening a Git repository and Automatically load the solution when opening a Git repository.

This maintains the consistency between the open code and open repository. However, if your solution is not in the same folder root as your repository, you may want to keep the solution open when you switch to its repository.

You can do that with this setting. Git offers a range of difftools pre-configured "out-of-the-box" kdiff3, kompare, tkdiff, meld, xxdiff, emerge, vimdiff, gvimdiff, ecmerge, diffuse, opendiff, p4merge and araxis , and also allows you to specify your own.

My answer will be coming from OS X so you will have to change file paths accordingly. This will fix the diff tool. I like diffmerge by SourceGear. I like it very very much, as a matter of fact. So, you see, you're defining a tool named "diffmerge" in the [difftool "diffmerge"] line. I obviously have the "diffmerge" command in my path, here.

Otherwise I'd need to give a full path to the executable. Reproducing my answer from this question which was more specific to setting Beyond Compare as diff tool for Git. All the details that I've shared are equally useful for any diff tool in general, so I am sharing it here:.

The above command creates the below entry in file. Then you run below command Running this command is redundant in this particular case and is required in some specialized cases only. You will know it in a short while :. The thing to know here is the key bc3. This is a well-known key to Git corresponding to a particular version of well-known comparison tools available in the market bc3 corresponds to the third version of the Beyond Compare tool.

If you want to see all pre-defined keys just run git difftool --tool-help command on Git Bash. It returns the below list:. You can use any of the above keys or define a custom key of your own.

If you want to setup a new tool altogether or a newly released version of well-known tool which doesn't map to any of the keys listed above then you are free to map it to any of keys listed above or to a new custom key of your own. Like in my case, I had installed Beyond Compare 4. Beyond Compare is a well-known tool to Git, but its version 4 release is not mapped to any of the existing keys by default.

So you can follow any of the below approaches:. I can map Beyond Compare 4 tool to already existing key bc3 which corresponds to Beyond Compare 3 version.

I didn't have Beyond Compare version 3 on my computer, so I didn't care. If I wanted I could have mapped it to any of the pre-defined keys in the above list also, e. For example. But if you want to change the default associated tool then you end up mentioning the path attribute separately, so that Git gets to know the path from where you new tool's EXE file has to be launched.