Hmm. I'm trying to configure the field widget to use a view, but the second argument is not passed to the view.
I want to use this to select advertisements based on their orientation (square, wide, tall). I have a field that needs to pass the arguments "square,tall", but the autocomplete is only showing me the square advertisements. If I reverse the arguments to "tall,square" it shows me the tall ads.
The problem appears to be that the widget arguments field is adding a space after each comma on save - "square, tall". This does not work when used in the Views preview UI either.