def METHOD_NAME():
    """Parse command line arguments."""
    parser = argparse.ArgumentParser(
        description="""
            Check for new lines in diff that introduce trailing whitespace
            or tab characters instead of spaces in unstaged changes, the
            previous n commits, or a commit-range.
        """,
        epilog=f"""
            You can manually set the commit-range with the COMMIT_RANGE
            environment variable (e.g. "COMMIT_RANGE='47ba2c3...ee50c9e'
            {sys.argv[0]}"). Defaults to current merge base when neither
            prev-commits nor the environment variable is set.
        """)
    parser.add_argument("--prev-commits", "-p", required=False, help="The previous n commits to check")
    return parser.METHOD_NAME()