def get_delimiter(conf):
    """ get the delimiter used in the log files between values

        :param ConfigParser conf: the main config file
        :returns: the user-defined delimiter or the assumed default one (,)
    """
    if conf.has_option('control', 'delimiter'):
        d = conf.get('control', 'delimiter')
        d = d.replace('\\t', '\t')
        return d
    else:
        return ','
