The European charter for regional or minority languages calls them "autochthonous", which strictly means native, but now also carries the suggestion of a language that's been displaced in importance by a more popular newcomer.

Favours ratifying the European Charter for Regional or Minority Languages, for the recognition of regional languages of France: Alsatian, Lorraine Franconian, French Flemish, Catalan, Corsican, Breton, Gallo, Basque, Langues d'oïl, Franco-Provençal and Occitan.