NST_NEST_LEVEL 1300 ext/mbstring/oniguruma/regparse.c NBREF(node)->state |= NST_NEST_LEVEL; NST_NEST_LEVEL 154 ext/mbstring/oniguruma/regparse.h #define IS_BACKREF_NEST_LEVEL(bn) (((bn)->state & NST_NEST_LEVEL) != 0)