>> >> revert-buffer-preserve-functions
>> >> revert-buffer-preserve-modes
>> >> revert-buffer-preserve-read-only
>> >> revert-buffer-preserve-outlines
>> >
>> > How about revert-buffer-restore- ?
>>
>> "restore" would be only part of the truth,
>> because these functions first save the state,
>> only their second task is to restore the saved state
>> afterwards.
>
> IMO, "restore" is better than "state", because you don't really
> restore any state: a buffer has no state, per se.  "Restore" is also
> better than "preserve".
>
> What is attractive in "restore" is that it is general and generic
> enough to include all the meanings you have shown in your examples.
> So I think "restore" is the best candidate till now.  If someone has
> better suggestions, please speak up.

Since no one has better suggestions, here is the patch that uses
"restore".  This will create two different name prefixes:

  revert-buffer-preserve-modes
  revert-buffer-restore-read-only

but this is fine.  So here is a complete patch with docs: