NST_NAMED_GROUP  1373 ext/mbstring/oniguruma/regparse.c     SET_EFFECT_STATUS(node, NST_NAMED_GROUP);
NST_NAMED_GROUP   166 ext/mbstring/oniguruma/regparse.h #define IS_EFFECT_NAMED_GROUP(en)      (((en)->state & NST_NAMED_GROUP)   != 0)