rem: nj = m; do { j = m - nj; 
add: while (j--) { 
context: Matrix.Zero = function(n, m) {  var els = [], ni = n, i, nj, j;  do { i = n - ni;    els[i] = [];    nj = m;    do { j = m - nj;      els[i][j] = 0;    } while (--nj);  } while (--ni);  return Matrix.create(els);};
meta: 3877	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/3877/5bb35ddb3516d7e68f3747d86540ffaa68de3fe3/matrix.js/buggy/src/matrix.js