Hack nav menu to add gettext() to menu items?

Question

I'm translating my whole site with gettext and I'm using shortcodes for the content in my pages that in turn call gettext. However shortcodes don't seem to work for menu items I need to figure out a way to translate them.

I'm wondering whether there is some way to modify my menu from my functions.php to add it a _("") function somewhere between retrieving the menu items labels from the database and echoing them.

Is that possible? if not, how can I translate menu items?

Answer 1

Retrieved menu items pass through wp_get_nav_menu_items filter, as well as few others in wp_get_nav_menu_items() and around.

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EDIT - This is what I used:

function translate_menu( $items, $menu, $args ) {
    foreach ( $items as $key => $item ) {
        $items[$key]->title = _($items[$key]->title);
    }
    return $items;
}