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git-delta:tldr:c0fa4
The command "git delta ${main}" is not a valid Git command, and it seems to be missing some necessary components.
However, if we assume that "${main}" is a placeholder representing the name of a branch in Git, we can explain a similar command: "git diff ${main}".
The "git diff" command in Git is used to show the differences between different states of the repository. When used with a branch name, such as "${main}", it compares the current state of the repository (usually represented by the currently checked-out branch) with the specified branch.
In simple terms, the "git diff ${main}" command compares the differences or changes made in the current branch compared to the specified branch (${main}). It will display a list of added, modified, and deleted files, as well as the specific changes within each file.
Note: The actual command being used may differ based on the specific git configuration and any other customizations made to the Git environment.