<base> tag breaks SVG marker rendering

[grzhan]

See http://stackoverflow.com/questions/18259032/using-base-tag-on-a-page-that-contains-svg-marker-elements-fails-to-render-marke

Maybe we need add a parameter in SVG.Marker to support fully resolve the marker url.

[wout]

We've had this question before. This issue affects all url() references. We'll have to add this to the to-do. Maybe make a utility function that we can use everywhere an url reference is made.

[Fuzzyma]

I was searching for that issue and found this one: #36. But actually I thought there was another one.
We decided to let this at it is because it added other problems with references. However, I dont know which one anymore...

[wout]

Thought so too and found it!

svgdotjs/svg.filter.js#1

I think we must indeed be careful with exporting. All url() references should then be converted on export.