A varargin is just a cell. So pass it in the nested function as input argument
function outer(a, b, varargin)
function inner(c, d, outervarargin, varargin)
e = outervarargin{1};
piiii = varargin{1}
end
outervarargin = varargin;
inner('c', 'd', outervarargin, pi);
end
outer('a', 'b', 'e');
