show duplicated rem in the merge button

I’m just apprehensive about pressing the merge button, as I don’t know if the rem with the same name is actually a duplicated or something else with same name. So I tend not to use it (I just postpone it, which ends up in not using it). But displaying the duplicated rem with some context (parent folders) when hovering on the merge button, might make the button useful for me at least… as I might be able to take a decision on the spot.