How to use Arguments in QML without getting qmlscene arguments

How to use Arguments in QML without getting qmlscene arguments

I'm trying to write a QML application to be launched by qmlscene. I want
this to accept arguments, so I'm using the Arguments object. However, this
gets the arguments passed to qmlscene as well as those I mean to pass to
my program. More problematically, if one of the arguments is a file,
qmlscene tries to process it, failing or hanging. Is there a good way
around this problem?
The first thing I tried was to pass the arguments in as a specific named
argument that qmlscene would ignore. The launch line looks like qmlscene
-I <directory> <qml file> --appargs="$*". ($* is a bashism for all the
arguments as a single string.) For a single argument, this works pretty
well. But if I were to want to pass more than one argument in, I'd have to
parse them myself, which sort of defeats the purpose of having an argument
parser.
Looking at some sample .desktop files, I noticed they put the arguments
before the qml file, so I tried a command line like qmlscene "$@" -I
<directory> <qml file>. This does keep qmlscene from trying to interpret
these arguments. But if I don't pass any arguments, the Arguments object
will happily process the arguments meant for qmlscene. So I still have to
do some processing here. I can't help but suspect I missing a better way.
What is it?