Drupal: character entity in menu link title

I have a menu link whose link title contains a character entity (e.g. La Niña). However, Drupal isn't recognising the character entity and is further encoding the ampersand, so I'm endin开发者_StackOverflowg up with La Niña. How do I fix that?

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You can override themable output in your theme template.php file or in a custom module.

Basicaly, the point is that the l() function isn't called with the "html" option in theme_menu_link

See http://api.drupal.org/api/drupal/includes--common.inc/function/l/7 and http://api.drupal.org/api/drupal/includes--menu.inc/function/theme_menu_link/7