this is my most desired feature, and has been ever since i started scripting.
in most (by a long shot at that) modern day program editors, there is a feature similar to this. some program editors even will color your brackets for you so that you can tell which one you're closing specifically and makes reading a sea of parenthesis much easier. some of the less advanced ones will momentarily bold the parenthesis you closed every time you press ). it does not take any kind of special programming stuff or a brain even, because using an extra ) in something would cause an error with the script usually. in the rare event that it does cause a problem, i think it will be easy to figure out.