NODE_BACK_REF    3518 compile.c            case NODE_BACK_REF:
NODE_BACK_REF    3522 compile.c      		  INT2FIX((node->nd_nth << 1) | (type == NODE_BACK_REF)),
NODE_BACK_REF    5485 compile.c            case NODE_BACK_REF:{
NODE_BACK_REF     448 ext/objspace/objspace.c 		COUNT_NODE(NODE_BACK_REF);
NODE_BACK_REF    15185 ext/ripper/ripper.c       case NODE_BACK_REF:
NODE_BACK_REF    15370 ext/ripper/ripper.c       case NODE_BACK_REF:
NODE_BACK_REF    9436 ext/ripper/ripper.y       case NODE_BACK_REF:
NODE_BACK_REF    9621 ext/ripper/ripper.y       case NODE_BACK_REF:
NODE_BACK_REF     561 node.c               case NODE_BACK_REF:
NODE_BACK_REF    1126 node.c               case NODE_BACK_REF:
NODE_BACK_REF     409 node.h         #define NEW_BACK_REF(n) NEW_NODE(NODE_BACK_REF,0,n,0)
NODE_BACK_REF    15109 parse.c              case NODE_BACK_REF:
NODE_BACK_REF    15294 parse.c              case NODE_BACK_REF:
NODE_BACK_REF    9436 parse.y              case NODE_BACK_REF:
NODE_BACK_REF    9621 parse.y              case NODE_BACK_REF: