classdef: call subsref method with correct nargout value (bug #48693) * /libinterp/octave-value/ov-classdef.cc (octave_classdef::subsref): Correct the nargout value for classdef subsref calls by checking the number of values the indexing argument addresses, using the same code used by the non-classdef subsref method. * /test/bug-48693/bug-48693.tst, bug48693.m, module.mk: Add simple test function files to verify subsref behavior.

classdef bug48693 < handle
  methods
    function varargout = subsref (x, idx)
      varargout = num2cell (zeros (size (idx(1).subs{1})));
    end
  end
end