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const DIFF_SIGN_LINE_ADDED: &str = "+"; const DIFF_SIGN_LINE_DELETED: &str = "-"; const DIFF_SIGN_LINE_DEFAULT: &str = " "; const DIFF_SIGN_HEADER_ORIGIN: &str = "---"; const DIFF_SIGN_HEADER_NEW: &str = "+++"; const DIFF_SIGN_HUNK: &str = "@@";