I have Atahualpa running on a multitude of WP installations, each representing a different language.
I do not however speak all the languages in question, and therefore changing the language in WP settings to update language tag does not work for me.
I tried adding, f.e. <html lang="dk"> in HTML Inserts: Header
Also tried something more elaborate:
<html xmlns="http://www.w3.org/1999/xhtml" lang="fi" xml:lang="fi"<?php /*language_attributes();*/ /*td hardcoded the language*/ ?>>
<html <?php language_attributes(); ?>>
No joy in either case.
Anyone have a working solution?