To prevent that usernames are publically visible, the username in the author's permalink is replaced with the author's ID.
Adds the ability to configure permalinks for custom post types using rewrite tags like %post_id% and %author%.
Demo plugin to show how to add a custom permalink to your plugin
Rewrite - A WordPress plugin to manage URL rewrite. Edit/add/backup/restore/reorder/test rewrite rule in easy way.
Unit test your rewrite rules from the WordPress Admin.
Appends a .html suffix to the permalinks of selected post types and taxonomies.
Displays the current rewrite rules for the site. Requires the debug bar plugin.