stroke-width="0" displays something with ASV

I submit the sample of the century
<?xml version="1.0"?>
<svg
		xmlns="http://www.w3.org/2000/svg"
		width="1000" height="1000"  >
<line x1="0" y1="0" x2="500" y2="500" stroke="rgb(0,0,0)" stroke-width="0">
	</line>
</svg>

This sample draw a really fine line with ASV v6+IE
and nothing with CSV 0.2, MozillaSVG, SVGSquiggle (Batik 1.5)

The SVG Spec 1.1 seems to not specify the way a viewer must draw a shape 
with a stroke-width of zero, but I think the good way is to draw nothing.

I need such a width in animated SVG where the width is animated from a 
value to 0, for example.

-- 
Jean-Claude Moissinac