> If dired buffer reverted from outside it, cursor jumps to begin of the
 > buffer once this buffer becomes current again.
 >
 > How to reproduce:
 >
 > 0. emacs -Q
 >
 > 1. Open some directory, say "DIR-A" in dired.
 >
 > 2. Move cursor to subdirectory, say "DIR-B", M-: (point) ;=> e.g. 225.
 >
 > 3. Dive into subdirectory "DIR-B".
 >
 > 4. Let's check position: M-: (with-current-buffer "DIR-A" (point)) ;=> 225, so cursor in the right place.
 >
 > 5. Revert original buffer: M-: (with-current-buffer "DIR-A" (dired-revert))
 >
 > 6. Check position again: M-: (with-current-buffer "DIR-A" (point)) ;=> 225, seems right here...
 >
 > 7. Switch back from the buffer with "DIR-B" to the buffer with "DIR-A".
 >
 > 8. Position lost! M-: (point) ;=> 1, but 225 expected.
 >
 > The issue very spunky if auto-revert-mode is used.
 >
 > Can't reproduce this issue with regular buffer, so it seems dired-specific.

The attached patch should fix this problem and the other ones with
'dired' that have been cited in this context.  Please try it.

Thanks, martin