Re: Uninformative comment in files.el

[Richard Stallman]

    Well, one (and possibly more) whole-buffer overlay(s) is a consequence
    of an obvious strategy to implement a top-down parser.  Ie, wrap each
    non-terminal parsed with an overlay to carry annotations as you return
    from recursive levels.  At least, it was obvious to me when I did it.

Maybe you're right, but even though one of the many overlays in this
would cover the whole buffer, it would also make other overlays,
smaller than the whole buffer, which would get messed up by reverting.