Comments improvements

        if (mExpectedSelStart == newSelStart && mExpectedSelEnd == newSelEnd) return true;

        // This update is not belated if mExpectedSelStart and mExpectedSelEnd match the old

        // values, and one of newSelStart or newSelEnd is updated to a different value. In this

        // case, there is likely something other than the IME has moved the selection endpoint

        // case, it is likely that something other than the IME has moved the selection endpoint

        // to the new value.

        if (mExpectedSelStart == oldSelStart && mExpectedSelEnd == oldSelEnd

                && (oldSelStart != newSelStart || oldSelEnd != newSelEnd)) return false;

        // If nether of the above two cases holds, then the system may be having trouble keeping up

        // If neither of the above two cases hold, then the system may be having trouble keeping up

        // with updates. If 1) the selection is a cursor, 2) newSelStart is between oldSelStart

        // and mExpectedSelStart, and 3) newSelEnd is between oldSelEnd and mExpectedSelEnd, then

        // assume a belated update.