Comment 1 for bug 246721

In fact, sodipodi:docbase is no longer used, which is why it isn't updated. Unless your file was produced in an old version of Inkscape (such as 0.45.1), there shouldn't even be a sodipodi:docbase attribute in the file.

So embedimage.py shouldn't be using sodipodi:docbase anymore. That can be dealt with in bug 246724.

I notice that svg_and_media_zip_output.py also tries to read sodipodi:docbase, but doesn't use the value at all.

Since sodipodi:docbase is no longer meaningful, and can be misleading, and since there are privacy concerns with it (bug 168958), we should remove it whenever we see it. Patch attached for that.