> So, is it a bug that
link_to="/PLUGINS_ROOT/<pluginID>/<tocfile>#anchorID"
> does not work?
>
> Or is PLUGINS_ROOT not useful for contributing into an anchor?
It really is not necessary to specify PLUGINS_ROOT when contributing to
an anchor. The support for PLUGINS_ROOT is only there to allow the TOC
contributions to use the same format as is used for hrefs. I suppose
that if we are going to support PLUGINS_ROOT we should also support
/PLUGINS_ROOT and you could file a bug on that.