[eviks]

understanding of what that "last thing I did" isn't session specific, like "adding an if block and a long comment describing what that block does" is semantically two last things I did, the fact that they're happening within a single insert session doesn't help. And I don't really need too keep it in my head, a solved undo would make it visually obvious to free my head

The alternatives you suggest are bad: 1. This is no undo, so then it's not part of redo

2. Why would I ever want 3 undo points if I indent my comment a bit by 3 spaces?