Perform alterations on language switcher links.
A language switcher link may need to point to a different path or use a translated link text before going through l(), which will just handle the path aliases.
$links: Nested array of links keyed by language code.
$type: The language type the links will switch.
$path: The current path.
Note: this list is generated by pattern matching, so it may include some functions that are not actually implementations of this hook.
function hook_language_switch_links_alter(array &$links, $type, $path) {
global $language;
if ($type == LANGUAGE_TYPE_CONTENT && isset($links[$language->language])) {
foreach ($links[$language->language] as $link) {
$link['attributes']['class'][] = 'active-language';
}
}
}