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