Generate diffs with <n> lines of context. The number of context lines defaults to diff.context or 3 if the configuration variable is unset. (-U without <n> is silently accepted as a synonym for -p due to a historical accident).

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.