(let ((segment-current-index-0 (segment-current-index segment))
(segment-current-posn-0 (segment-current-posn segment)))
(incf (segment-current-index segment)
(let ((segment-current-index-0 (segment-current-index segment))
(segment-current-posn-0 (segment-current-posn segment)))
(incf (segment-current-index segment)