TalkRight.class.php

<?php

class TalkRight
{
    /**
     * Dynamically adjust user rights
     * Grant 'edit' right if the user has 'talk' permission and is trying to edit a talk page.
     * @param User $user User object
     * @param array &$rights Array of rights
     */
    public static function onUserGetRights(User $user, array &$rights)
    {
        $title = RequestContext::getMain()->getTitle();
        if (($title && $title->getSubjectPage()->exists() && $title->isTalkPage()) ||
            ($title->getText() === $user->getName() &&
                ((in_array($title->getNamespace(), [NS_USER, NS_USER_TALK]))))
        ) {
            if (in_array('talk', $rights)) {
                if (!in_array('edit', $rights)) {
                    $rights[] = 'edit';
                }
                if (!in_array('createpage', $rights)) {
                    $rights[] = 'createpage';
                }
            }
        }
    }
}