Re: 23.0.50; hexl-mode and auto-revert-mode incompatibilities

[martin rudalics]

>   Mmh, it behaves the same way as in the first patch for me, I hope I
> haven't made a mistake. auto-revert-tail-mode still breaks.

So even brute force won't help us here?  Could you, for testing
purposes, insert at the beginning of `auto-revert-tail-handler' a
message like:

(defun auto-revert-tail-handler (size)
  (message "%s" auto-revert-tail-is-revert-buffer) (ding)
  (let ((modified (buffer-modified-p))

evaluate that and tell me what gets printed for hexl-mode buffers?
Basically,

    (set (make-local-variable 'auto-revert-tail-is-revert-buffer) t)

in hexl-mode together with

        (if (and auto-revert-tail-mode
                 (not auto-revert-tail-is-revert-buffer))
            (auto-revert-tail-handler size)

in `auto-revert-handler' should assure that `auto-revert-tail-handler'
is _never_ called for hexl-mode buffers.