35     if (m->next != NULL)  in link_line_buf()
37         s->next = m->next;  in link_line_buf()
38         (s->next)->prev = s;  in link_line_buf()
41         s->next = NULL;  in link_line_buf()
43     m->next = s;  in link_line_buf()
49     if ((s->prev != NULL) && (s->next != NULL))  in unlink_line_buf()
51         (s->prev)->next = s->next;  in unlink_line_buf()
52         (s->next)->prev = s->prev;  in unlink_line_buf()
53         s->next = NULL;  in unlink_line_buf()
56     else if (s->next != NULL)  in unlink_line_buf()
59         (s->next)->prev = NULL;  in unlink_line_buf()
60         s->next = NULL;  in unlink_line_buf()
64         s->next = NULL;  in unlink_line_buf()
65         (s->prev)->next = NULL;  in unlink_line_buf()
74     lb_free_ptr = lb_free_ptr->next;  in alloc_line_buf()
87     lb->next = lb_free_ptr;  in free_line_buf()
89     (lb->next)->prev = lb;  in free_line_buf()
106     lb_heap[i].next = NULL;  in init_lb_heap()
220         if (tb->cur->next == NULL)  in m_putchar()
246             tb->cur = tb->cur->next;  in m_putchar()
333         lb = lb->next;  in text_buf_to_vram()