bug#46268: 27.1.91; Error in occur-rename-buffer

[Stefan Monnier]

> AFAICT, `occur--garbage-collect-revert-args` aims to throw away the
> overlays when they're not needed, but we will need them again if we want
> to `revert-buffer`, so we shouldn't call this function until we're sure
> `revert-buffer` won't be called.  IOW, I think we should just remove
> the above call.

I now see what's going on: this call is supposed to throw away the
overlay used by the previous invocation of `occur`.  So when we revert,
we don't want to throw them away but when it's a fresh new invocation,
we do.

Maybe we should add a (unless (eq bufs (nth 2 occur-revert-arguments)))?


        Stefan