Dmitry Gutov <dgutov@yandex.ru> writes:

[...]
>> But then the user will get error about wrong number of arguments if
>> the
>> backend doesn't support it.
>
> That's better than having the file deleted, I think.
>
> And our implementation can catch this particular error and show a more
> humane message, too.

With the attached patch, the file will not be deleted when prefix is given.


[...]
>> I think it would be better to check if the file exists after calling
>> vc
>> backends.  If it doesn't and keep-files is non-nil, we can restore from the
>> backup(which is always happening).
>
> Couldn't backups be disabled?

The attached patch changes make-backup-files temporarily.