Lines Matching defs:BACK
93 #define BACK 7 /* no Match "", "next" ptr points backward. */
113 * BACK Normal "next" pointers all implicitly point forward; BACK
117 * BRANCH structures using BACK. Simple cases (one character
447 regoptail(ret, regnode(BACK)); /* and loop */
457 regtail(regnode(BACK), ret); /* loop back */
675 if (OP(scan) == BACK)
873 case BACK:
1059 if (OP(p) == BACK)
1149 case BACK:
1150 p = "BACK";