Sub-path URL Aliasing | drupal.org

Drupal core's path module matches only full URLs when creating SEO-friendly aliases for internal paths. This module extends that behavior by also matching known sub-paths at the beginning and replacing them with their respective alias. For example, this allows the node edit URL (by default unaliased) node/1/edit to become content/title/edit. Thus, when used in conjunction with the Pathauto module, it is possible to get rid of all remaining exposed internal URLs.