A confused constitutional order. Inexpressibility and uncertainties of the French constitution

In France today, we are prompted to value the notion of constitution whether in political talk or in the learned discourse of jurists. The notion has in some sense been placed back at the very core of national political culture after, if not having been driven out, at least having played only a very unobtrusive role for many decades. "The Constitution" is nowadays invoked much as it is in most free countries governed by law, in what are conventionally called constitutional democracies. This reinstatement (for it does seem that is what it is, especially with respect to the beginnings of the Fifth Republic) appears to be incontrovertible, but it is extremely ambiguous even so.