doc: documented trade off regarding last insert tracking

README.md

@@ -72,6 +72,10 @@ I rarely use, and even find a bit un-intuitive. Implementing replace mode in a w
 actions function the same as insert mode (other than the actual character typing) allows for 
 a much simpler implementation, as well as a more intuitive user experience.
 
+Replace mode implements and replaces (no pun intended) the last inserted keys of insert mode. Due to
+the infrequent use of replace mode, and the '.' action for insert mode, this felt like a natural 
+trade off.
+
 ---
 
 ## TODO List

internal/input/handler.go

@@ -583,8 +583,6 @@ func (h *Handler) handleReplaceKey(m action.Model, key string) tea.Cmd {
 		buf.UndoStack.BeginBlock(win.Cursor)
 	}
 
-	// TODO: Handle differently
-
 	// Record the key for count replay (e.g. 5i...)
 	m.SetInsertKeys(append(m.InsertKeys(), key))
 	m.SetLastChangeKeys(append(m.LastChangeKeys(), key))