[Octave-bug-tracker] [bug #62420] inputParser fails due to interpreter changes in 7.1.0

[Georg Wiora]

Follow-up Comment #2, bug #62420 (project octave):

Sorry Markus, I had an outdated version of inputParser in my path. After
removing the old version the problem essentially stays the same, just the code
looks exactly as you quoted it.

It fails when executing _val (in)_ because _validatedattributes()_ that is
provided as function handle in _val_ is not returning a result if argument
check is ok:

error: validateattributes: function called with too many outputs
error: called from
    validateattributes



After I rewrote the validate_arg() function like this it is behaving as
expected:

    function validate_arg (this, name, val, in)

      try
        check = val(in);
      catch
        myerror = lasterror();
        if strcmpi(myerror.identifier,"Octave:invalid-fun-call")
          ## check is ok if no result
          check = true;
        else
          ## rethrow error
          disp(myerror());
          error(myerror.identifier,myerror.message);
        endif
      end_try_catch

      if (!check)
        this.error (sprintf ("failed validation of %s with %s",
                             toupper (name), func2str (val)));
      endif
      this.Results.(name) = in;

    endfunction


I can't tell if it would be better to modify _validateattributes()_


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