function isfast = testlisterror(varargin)

  args = varargin;

  isfast = zeros(1, 2);
  while  ~isempty(args) & strindex(args(1), "fast") do
    temp = args(1);
pause
    args(1) = null();
    // set isfast:
    isfast(2 - strindex(temp, "p")) = bool2s(isempty(strindex(temp, "non")));
  end

endfunction
