bug#13540: 24.3.50; Regression in trunk: auto-revert-mode fails on files accessed via samba

[Dani Moncayo]

>> If the file is stored locally, it breaks two times when the file being
>> watched is updated (I have to type `c' two times).
>
> How did you "update the file", exactly?  I just type something like
>
>   echo "foo" >> FILE
>
> This results in only one notification, not two.  Maybe your update
> method causes the file to be modified twice in a row.

If I update the file that way (echo "foo" >> FILE), I get a single
break like you, but I get two breaks in these cases:
* Doing [echo "foo" > FILE] (i.e. replacing the file entirely).
* Updating the file using notepad.
* Updating the file using another instance of Emacs.

-- 
Dani Moncayo