Sub-path URL Aliases | drupal.org

matching known sub-paths and replacing them with their respective alias. For example, if node/1 is aliased to content/title, this module rewrites the link to the node edit page node/1/edit to use the aliased URL content/title/edit instead. This also includes Views URLs taking a node as argument (node/%/yourview), in short, every URL that is based on, or extends, an existing alias.