def METHOD_NAME(runfile: str) -> Optional[List[str]]:
    """Extract the command line input from the runfile"""
    ret = None
    with open(runfile, 'r') as f:
        for i in f:
            if '"$AMSBIN"/unifac' in i:
                ret = i.split()
                arg_list[-1] = arg_list[-1].rstrip('\\')
            else:
                continue
            while i.endswith('\\'):  # The input might be spread over multiple lines
                i = next(f)
                ret += i.split().rstrip('\\')
            del ret[0]  # Delete ``"$AMSBIN"/unifac``
            break
    return ret