[Octave-bug-tracker] [bug #51698] Nested function fails to inherit a variable created with assignin

[John W. Eaton]

Follow-up Comment #9, bug #51698 (project octave):

The problem is that assignin (or eval, or load) can create variables.  That
causes trouble for lookup of non-local names.  If you want things to work
properly, then write it like this:


function main();
  M = [];
  _setM();
  (do stuff with M here)

  K = 2;
  _callsub_on_K();

  function _callsub();
           K +=3 ; 
  endfunction
  
endfunction

function _setM();
  assignin("caller", "M", 1);
endfunction


But I have to ask, why do you want to use assignin here instead of just
writing


function main();
  M = _setM ();
  (do stuff with M here)

  K = 2;
  _callsub_on_K();

  function _callsub();
           K +=3 ; 
  endfunction
  
endfunction

function M = _setM();
  M = 1;
endfunction



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