Programming IDEs feature to add a forgotten open parentheses? [closed]

Question

I very often find myself in situations where I should have opened a parentheses, but forgot and end up furiously tapping the left arrow key to get to the spot I should have put it, and doing the same to get back to where I was - that, or removing one hand from the keyboard to do it with the mouse. Either way, it's a stupid mistake on my part and a poor use of time going back to fix it.

For example, if typing something like

var x = 100 - var1 + var2;

I might get to the end of the statement and realize I wanted to subtract the sum of var1 and var2 from 100 and not add var2 to the difference of 100 and var1.

I can't really expect an IDE to prevent my mistakes, but I was thinking there could be a simple enough feature that would save time when they're made. Specifically, some kind of function that, after a closing parenthesis is added where there isn't an opening one, would start ghosting in an opening parenthesis at different statements and allow the user to switch between them.

For example:

Say you have the following statement:

var x = oldY * oldX + newY / newX - left - right;

If you put a closing parenthesis after right and pressed the shortcut, the IDE would do:

var x = oldY * oldX + newY / newX - ( left - right);

press left, and then:

var x = oldY * oldX + newY / ( newX - left - right);

...then:

var x = oldY * oldX + ( newY / newX - left - right);

Anyway... Does this feature exist? If not, should it exist? What do senior programmers do when this happens?