OCH_
case OCH_:
case OCH_:
case OCH_: /* find the right one, if any */
case OCH_: /* mark the first two branches */
INSERT(OCH_, start); /* offset is wrong... */
INSERT(OCH_, start);
case OCH_:
case OCH_:
INSERT(OCH_, pos); /* offset slightly wrong */
INSERT(OCH_, bc->start); /* offset is wrong */