72       return (tail - head == o.tail - o.head)  in operator ==()
74 	  && 0 == hb_memcmp (head, o.head, tail - head)  in operator ==()
79       return hb_bytes_t (head, tail - head).hash () ^  in hash()
94     char *tail;  member
102     char *tail;  member
108   { return snapshot_t { head, tail, current, current->links.length }; }  in snapshot()
152     this->tail = this->end;  in reset()
242       obj->tail = tail;  in push()
255     revert (obj->head, obj->tail);  in pop_discard()
271     obj->tail = head;  in pop_pack()
273     unsigned len = obj->tail - obj->head;  in pop_pack()
293     tail -= len;  in pop_pack()
294     memmove (tail, obj->head, len);  in pop_pack()
296     obj->head = tail;  in pop_pack()
297     obj->tail = tail + len;  in pop_pack()
323     revert (snap.head, snap.tail);  in revert()
331     assert (tail <= snap_tail);  in revert()
333     tail = snap_tail;  in revert()
341 	   packed.tail ()->head < tail)  in discard_stale_objects()
343       packed_map.del (packed.tail ());  in discard_stale_objects()
344       assert (!packed.tail ()->next);  in discard_stale_objects()
345       packed.tail ()->fini ();  in discard_stale_objects()
349       assert (packed.tail ()->head == tail);  in discard_stale_objects()
400 	case Tail:     offset = child->head - parent->tail; break;  in resolve_links()
401 	case Absolute: offset = (head - start) + (child->head - tail); break;  in resolve_links()
453     if (this->tail - this->head < ptrdiff_t (size))  in allocate_size()
545 		     + (this->end  - this->tail);  in copy_bytes()
551     memcpy (p + (this->head - this->start), this->tail, this->end - this->tail);  in copy_bytes()
578   char *start, *head, *tail, *end;  member