Route 66 deletes self referential hreflang tag

Hi !

When the plugin is activated and the languagefilter plugin is activated the lines




will read





so



gets deleted.

Correct behaviour would be






in the header.

Yes, the error/deletion goes away when disabling the plugin. I haven't looked enough into this , but i think the addheadlink funtion just takes one line per URL and deletes other entries if multiple calls are made. i hacked into languagefilter.php
$doc->addHeadLink($server .'/' . $languages[$this->current_lang]->sef.'/' , 'alternate', 'rel', array('hreflang' => $this->current_lang));
-> gets also deleted
$doc->addCustomTag('');
-> stays
If I would guess you need to call addCustomTag instead of addHeadlink for the canonical tag ?