"disabled" tags ?

It seems that smarty plugins generally do not support really well the 
'disabled' tag. For example, on SELECT statements this can be remedied by 
manually defining the <SELECT> tag, but having the disabled attribute for 
others, like the select_date and select_time plugins is more than tricky 
without modifying the plugins themselves. Is there any opinion on this ? I 
made some quick patches for my needs that add this functionality but I'm not 
sure of any 'official' standpoint from other smarty developers to the 
usefulness of this - if needed, these could be applied to CVS.

I'm sorry if this question has appeared before, I searched for it but found 
nothing.