Stefan Monnier <monnier@iro.umontreal.ca> writes:

>>  (defun url-copy-file (url newname &optional ok-if-already-exists
>> -			  _keep-time _preserve-uid-gid)
>> +                          _keep-time _preserve-uid-gid _preserve-permissions)
>
> Maybe we should just do
>
>     (defun url-copy-file (url newname &optional ok-if-already-exists &rest _)

I agree.  More importantly, an integral ok-if-already-exists should be
handled as in copy-file.  How's the following?