Template:If localized

This template will check if the current page is a localize (non english-base) page, by cheking if the sub page is a valid language code or not.

Example
will return "x" if the page is a localize page, else return "y". When transcluded in,
 * "Page" yield "y"
 * "Page name/sub" yield "y"
 * "Page name/en" yield "x"
 * "Page name/fr" yield "x"
 * "Page name/ja" yield "x"
 * "Page name/th" yield "x"