gistfile1.txt

function indentOnBrace(cm) {
  var cursor = cm.getCursor(), line = cm.getLine(cursor.line);
  var indent = cursor.ch == 0 || /^\s*$/.test(line.slice(0, cursor.ch));
  cm.replaceSelection("}", "end");
  if (indent) cm.indentLine(cursor.line);
}

instance.setOption("electricChars", false);
instance.setOption("extraKeys", {"'}'": indentOnBrace});