It does matter since the user may bring up code hints in one property name, but do nothing and set cursor to the beginning of a different property name and start typing. Then we need to update the exclusion to the new one. It might be easier to see with the following example..
````
div {
   margin: something;
   float: somevalues;
}
````
If the uset set cursor right before and press Ctrl+Space, then Esc to dismiss the code hints, we will have ``float`` as exclusion. If the user then put the cursor before ``margin`` and type ``d``, we should clear previous exclusion ``float`` and update exclusion to ``maergin``. The code here is to clear the previous exclusion. And I have code on line 99 to  set a new exclusion.