Lines Matching refs: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
433 regoptail(ret, regnode(BACK)); /* and loop */
443 regtail(regnode(BACK), ret); /* loop back */
663 if (OP(scan) == BACK)
872 case BACK:
1063 if (OP(p) == BACK)
1153 case BACK:
1154 p = "BACK";