def mmatch(expr,
           delimiter,
           greedy,
           search_type,
           regex_match=False,
           exact_match=False,
           opts=None):
    '''
    Helper function to search for minions in master caches
    If 'greedy' return accepted minions that matched by the condition or absent in the cache.
    If not 'greedy' return the only minions have cache data and matched by the condition.
    '''
    if not opts:
        opts = __opts__

    ckminions = salt.utils.minions.CkMinions(opts)

    return ckminions._check_cache_minions(expr, delimiter, greedy,
                                          search_type, regex_match=regex_match,
                                          exact_match=exact_match)
Helper function to search for minions in master caches
    If 'greedy' return accepted minions that matched by the condition or absent in the cache.
    If not 'greedy' return the only minions have cache data and matched by the condition.