O_BACK            169 ext/ereg/regex/debug.c 		case O_BACK:
O_BACK            288 ext/ereg/regex/engine.c 		case O_BACK:
O_BACK            538 ext/ereg/regex/engine.c 		while (m->g->strip[ss] != SOP(O_BACK, i))
O_BACK            865 ext/ereg/regex/engine.c 		case O_BACK:
O_BACK            520 ext/ereg/regex/regcomp.c 			EMIT(O_BACK, i);