NSTR_AMBIG 88 mbstring/oniguruma/regparse.h #define NSTRING_SET_AMBIG(node) (node)->u.str.flag |= NSTR_AMBIG NSTR_AMBIG 91 mbstring/oniguruma/regparse.h #define NSTRING_IS_AMBIG(node) (((node)->u.str.flag & NSTR_AMBIG) != 0)