Lines Matching defs:BACK
87 #define BACK 7 /* no Match "", "next" ptr points backward. */
107 * BACK Normal "next" pointers all implicitly point forward; BACK
111 * BRANCH structures using BACK. Simple cases (one character
435 regoptail(ret, regnode(BACK)); /* and loop */
445 regtail(regnode(BACK), ret); /* loop back */
672 if (OP(scan) == BACK)
891 case BACK:
1084 if (OP(p) == BACK)
1174 case BACK:
1175 p = "BACK";