Lines Matching defs:BACK
92 #define BACK 7 /* no Match "", "next" ptr points backward. */
114 * BACK Normal "next" pointers all implicitly point forward; BACK
118 * BRANCH structures using BACK. Simple cases (one character
440 regoptail(ret, regnode(BACK)); /* and loop */
450 regtail(regnode(BACK), ret); /* loop back */
742 if (OP(scan) == BACK)
973 case BACK:
1155 if (OP(p) == BACK)
1243 case BACK:
1244 p = "BACK";