docs: def set_if_none(user_config, config, key, value):
      '''
      If the value of the key in is None, and doesn't exist on the user config,
      set it to a different value
      '''
  
      keys = key.split('.')
      for k in keys[:-1]:
          try:
              user_config = user_config[k]
          except KeyError:
              user_config = {}
  
          config = config[k]
  
      key = keys[-1]
  
      if key not in user_config and not config[key]:
          config[key] = value