Error with namelist authentification

Hello,

On line 29 of read_namelist_chease,

    if isempty(varargin{1}) || varargin{1}==1
      def_nam = 'default_namelist_chease_expeq';

if I provide a path for the namelist such that:

varargin{1} = '/tmp/contre/default_namelist_chease_eqdsk'

it throws an error because isempty(varargin{1}) is a 1x1 logical while varargin{1}==1 is a 1x41 logical (since it is a string of characters). I can suggest a quick fix, except if I am doing something wrong here? @osauter