&& (MATRIX_ROW (current_matrix, j - 1)->y
== MATRIX_ROW (desired_matrix, i - 1)->y)
&& !MATRIX_ROW (desired_matrix, i - 1)->redraw_fringe_bitmaps_p
&& (MATRIX_ROW (current_matrix, j - 1)->y
== MATRIX_ROW (desired_matrix, i - 1)->y)
&& !MATRIX_ROW (desired_matrix, i - 1)->redraw_fringe_bitmaps_p