message: elle.print: fix
diff: @@ -376,7 +376,7 @@ namespace elle
  auto const& name = static_cast<Name const&>(cond).n;
  auto it = named.find(name);
  if (it != named.end())
  - p = bool(it->second);
  + p = p && bool(it->second);
  else
  elle::err("missing named format argument: %s", name);
  }
  