NST_NEST_LEVEL 1273 mbstring/oniguruma/regparse.c NBACKREF(node).state |= NST_NEST_LEVEL; NST_NEST_LEVEL 172 mbstring/oniguruma/regparse.h #define IS_BACKREF_NEST_LEVEL(bn) (((bn)->state & NST_NEST_LEVEL) != 0)