In Django, when I use:
{{ request.build_absolute_uri }}{% static \"img/myimage.jpg\" %}
It produces: \'http://myurl.com//static/img/myimage
Not entirely sure what you're asking, but since the {% static .. %} is only adding /static/ to the front of your path you specify, you could just do that yourself:
{{ request.build_absolute_uri }}static/img/myimage.jpg
Not very modular, but then again most times you don't need direct access to the full url since it will just append it onto whatever url you're at if you use it as a src for some html object.