Richard Stallman <rms@gnu.org> writes:

>     Now, use M-x ad-remove-advice RET RET RET RET (the default each time)
>     There's two annoying things :
>     1. M-x describe-function RET forward-line RET says :
>     | This subr is advised.
>
> That's not a bug; we need not do anything now.
>
> Your patch looks maybe ok for the future, but let's not do anything
> there now.

OK, so we'll see later.

>     2. M-x ad-remove-advice default values are impossible.
>
> I do not understand.

After the first call to `ad-remove-advice', the second call defaults
its arguments to `forward-line' which has no more advices.

Maybe we just want the following: