File::Statfs documentation still exists on ruby-doc.org/core-trunk/
I found File::Statfs still exists in core-trunk web documentation.
But this feature no longer exists.
Google search leads me to this page, which is a bit confusing.
Updated by shevegen (Robert A. Heiler) almost 3 years ago
Agree that it is confusing.
In my opinion, if it were easily possible so, it would be best to have only one
central repository including the documentation, e. g. something like
doc.ruby-lang.org or a sub-page like that.
As it is right now, when I search for documentation (via google usually),
and don't specify anything else, I also find old ruby versions first,
which is not a huge problem but a bit annoying. (I understand that we here
have no control over what Google does and how it caches, but I still think
it would be best to have all documentation in ruby bundled in one page;
I actually even think that gems should be available under
gems.ruby-lang.org, but again, I understand that unification is not trivial
due to disparate servers + content on these servers).