I'm building project Word like on contentEditable. I know this is not the best choice to make in case of rich text editors, but still I want to track changes in the document by user, with peer-review in the end by supervisor.

I have a state, isTrackingChanges, when true - it's overrides actions, as - on insert text, insert node with underline, on backspace - get a deleted character, insert node with strikethrough style, move caret by one character to the left. At this point I have a lot of inline nodes. But on peer review I would like to accept/decline whole part of characters. How can I group them programmatically?