zero length dashes

All,

the SVG 2.0 spec [1] doesn't deal with zero length dashes.
example: http://jsfiddle.net/hGjf5/

When a dash is of length 0, its end caps are supposed to be drawn along the
direction of the original path.
Maybe what the SVG spec should do is:
- defined the concept of an original subpath which is the path before it is
divided into subpaths before the dash array is defined
- update the section that describes drawing the end caps so it refers to
this new concept.
ie

its longer edges, A and B, are parallel to the line perpendicular to the
*original* subpath at distance position along it.

Running some experiments, only Chrome does not implement this behavior. FF,
Safari and IE all display the jsfiddle example correctly.

1: https://svgwg.org/svg2-draft/painting.html#TermStrokeShape