Rated 1 out of 5 stars
Locationbar linkifies all parts of a URL path, thus is a generalization of this.This review is for a previous version of the add-on (1.5).
Resolved in Navigate Up version 2.0
Navigate Up version 2.0 has a context menu which allows navigation to any part of the URL (higher level URL) - and also to one or two related alternative high level URLs. It also provides a quick way (double-click) to navigate to the root URL.