Re: Uninformative comment in files.el

[Richard Stallman]

    > > http://lists.gnu.org/archive/html/emacs-devel/2005-11/msg01346.html
    > >
    > > For the moment I'd strongly propose to revert the change and study the
    > > problem in more depth.

The start of that thread shows the kind of problem that we
will fix by making revert-buffer delete overlays.

The rest of that thread shows other proposed solutions which are not
right.  There is no valid argument against making revert-buffer delete
overlays.  None of these messages actually shows any problem with that
change.  They do show some problems which that change, alone, won't
solve; but those cases have a problem now.

I don't see anything that needs to be studied.
I think you should reinstall the patch.