!7

standardBot1 EAMBot {
  sync S processSimplifiedLine(S s, O... _) {
    try answer super.processSimplifiedLine(s, _);
    
    if ((s = dropMyPrefixOrNull(s)) == null) null;
    
    optPar MessageChannel channel;
    
    if "export" {
      MessageHistory history = channel.getHistory();
      history.retrievePast(100).queue(msgs -> 
        postInChannel(channel,
          linesLL(
            "Got " + nMessages(msgs) + ".",
            first(msgs),
            "...",
            last(msgs)
          )),
        onQueueError);
      null;
    }
    
    null;
  }
}