git-difftool:tldr:4c66a

git-difftool: Use a specific tool (opendiff) to show changes since a given commit.

$ git difftool --tool=${opendiff} ${commit}

try on your machine

The command git difftool --tool=${opendiff} ${commit} is used to compare the changes between the specified commit and the current working directory using an external diff tool.

Here's a breakdown of the command:

git difftool is a Git command that launches an external diff tool to compare differences between different commits or branches.
--tool=${opendiff} is an option that specifies the external diff tool to be used for the comparison. In this case, the value ${opendiff} is most likely a placeholder variable that should be replaced with the actual name of the diff tool you want to use, such as opendiff. The --tool option can also be omitted, in which case Git will attempt to use the default diff tool.
${commit} is a placeholder variable representing the commit you want to compare with the current working directory. Replace it with the actual commit reference, such as a commit hash, branch name, or any other identifier recognized by Git to identify a specific commit.

In summary, the command is used to open an external diff tool (${opendiff}) to compare the changes between the specified commit ${commit} and the current working directory.

This explanation was created by an AI. In most cases those are correct. But please always be careful and never run a command you are not sure if it is safe.

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