title: Running Octave function - undefined near line 1 column 5
body: <p>I got a problem with running any Octave function.
  The function can be as simple as:</p>
  
  <pre><code>function a = testt(k)
    a = k + 5
  end
  </code></pre>
  
  <p>named testt.m and called with commander</p>
  
  <blockquote>
    <blockquote>
      <p>a = testt(7)</p>
    </blockquote>
  </blockquote>
  
  <p>gives an error: 'testt' undefined near line 1 column 5</p>
  
  <p>I added path before addpath(pwd). I copied some available function from web. And it is still the same. 
  At the same time I'm able to run another function which I wrote two days ago and which is in the same directory:</p>
  
  <pre><code>    function A = fibn_(n)
  
      B = [0 1];
  
      for i = 1: n-2
  
        nkol = size(B,2);
        minus = B(1,nkol);
        minus1 = B(1,nkol-1);
  
        B(1,nkol+1) = minus1 + minus;
  
      end;
  
      A = B;
  
      end;
  </code></pre>
  
  <p>I have no idea what is the difference between this two (not only this two but also many other functions that seems to be correct).</p>
  
  <p>Anybody help?</p>