Vim consults this variable prior to displaying the "swapfile exists" message.

vim会提前查询这个变量，显示“swapfile exists”消息。

youdao

So now you'll never see the swapfile message; your Vim session will just automatically quit if you try to edit a file that's being edited elsewhere.

那么现在您就永远不会看到swapfile消息；您的Vim会话将会自动退出，如果您试图编辑一个正在其它地方进行编辑的文件。

youdao