Whenever I'm typing a line of text, and I realize that I made a typo, I'm used to hitting and/or holding CTRL-Z to undo the letters I've just typed until I get to my error. But when I hit CTRL-Z, it un-does the entire line. Some might say to just use the backspace, because that's what it's there for. So then I press/hold the backspace and sometimes I end up erasing too many chars. So I press CTRL-Z again, and it'll rewrite all the text I just erased. I guess the solution to that is, don't mess up. But if I could do that, I wouldn't need an undo function.

Anyway, is it possible to add an option that simplifies the undo function to undo the last basic action/keystroke?