Module:Caller title/doc

This module simply returns the title of the page calling this module. It’s intended for templates translated using the Translate extension. It has two entry points, both can be called with :
 * title: Get the full title of the template.
 * lang: Get the language code (subpage name). In fact, it doesn’t check if the subpage name is a valid language code, so if called from X/y/z, it’ll happily return z. The template using this functionality should ensure it’s only used on language subpages (or be okay with garbage output). An additional base parameter can be given with the full title of the translation base page, so that page language is used on that page (as there is no language code subpage there).