docs: def list_(name, add, match, stamp=False, prune=0):
      '''
      Add the specified values to the named list
  
      If ``stamp`` is True, then the timestamp from the event will also be added
      if ``prune`` is set to an integer higher than ``0``, then only the last
      ``prune`` values will be kept in the list.
  
      USAGE:
  
      .. code-block:: yaml
  
          foo:
            reg.list:
              - add: bar
              - match: my/custom/event
              - stamp: True
      '''
      ret = {'name': name,
             'changes': {},
             'comment': '',
             'result': True}
      if not isinstance(add, list):
          add = add.split(',')
      if name not in __reg__:
          __reg__[name] = {}
          __reg__[name]['val'] = []
      for event in __events__:
          try:
              event_data = event['data']['data']
          except KeyError:
              event_data = event['data']
          if salt.utils.stringutils.expr_match(event['tag'], match):
              item = {}
              for key in add:
                  if key in event_data:
                      item[key] = event_data[key]
                      if stamp is True:
                          item['time'] = event['data']['_stamp']
              __reg__[name]['val'].append(item)
      if prune > 0:
          __reg__[name]['val'] = __reg__[name]['val'][:prune]
      return ret