RE: Why doesn't Info `T' cache node tree for current file?

[Drew Adams]

> > I see one problem: how to refresh the cached TOC buffer when the
> > Info file changes
> 
> I can refresh it the first time the user invokes Info-toc and you
> discover that the Info file is different from what it was last time
> you created the TOC.

Yes, that's the way I see it. The file is associated with the TOC.

If, when the user hits `T', the current manual (file) is different from the one
associated with the cached TOC, then you build a new TOC.

The question is whether it's worth saving both caches. Memory/time trade-off.