-U<n>
--unified=<n>

Generate diffs with <n> lines of context. Defaults to diff.context or 3 if the config option is unset.

--inter-hunk-context=<n>

Show the context between diff hunks, up to the specified <number> of lines, thereby fusing hunks that are close to each other. Defaults to diff.interHunkContext or 0 if the config option is unset.