2462     msgchunk_T	*sb_prev;  member
2516 		mp->sb_prev = NULL;  in store_sb_text()
2520 		mp->sb_prev = last_msgchunk;  in store_sb_text()
2579 	lastp = &last_msgchunk->sb_prev;  in clear_sb_text()
2584 	mp = (*lastp)->sb_prev;  in clear_sb_text()
2601     if (mp == NULL || mp->sb_prev == NULL)  in show_sb_text()
2618     while (mp != NULL && mp->sb_prev != NULL && !mp->sb_prev->sb_eol)  in msg_sb_start()
2619 	mp = mp->sb_prev;  in msg_sb_start()
2829 					     && mp_last->sb_prev != NULL; ++i)  in do_more_prompt()
2830 	    mp_last = msg_sb_start(mp_last->sb_prev);  in do_more_prompt()
2973 		else if (mp_last->sb_prev != NULL)  in do_more_prompt()
2974 		    mp = msg_sb_start(mp_last->sb_prev);  in do_more_prompt()
2979 		for (i = 0; i < Rows - 2 && mp != NULL && mp->sb_prev != NULL;  in do_more_prompt()
2981 		    mp = msg_sb_start(mp->sb_prev);  in do_more_prompt()
2983 		if (mp != NULL && mp->sb_prev != NULL)  in do_more_prompt()
2988 			if (mp == NULL || mp->sb_prev == NULL)  in do_more_prompt()
2990 			mp = msg_sb_start(mp->sb_prev);  in do_more_prompt()
2994 			    mp_last = msg_sb_start(mp_last->sb_prev);  in do_more_prompt()