IN_ALT           3467 mbstring/oniguruma/regcomp.c       r = setup_tree(NCONS(node).left, reg, (state | IN_ALT), env);
IN_ALT           3605 mbstring/oniguruma/regcomp.c 	if ((state & (IN_ALT | IN_NOT | IN_VAR_REPEAT)) != 0) {