IS_BACKREF_NAME_REF 1791 ext/mbstring/oniguruma/regcomp.c   if (! IS_BACKREF_NAME_REF(bn))
IS_BACKREF_NAME_REF 1862 ext/mbstring/oniguruma/regcomp.c     if (! IS_BACKREF_NAME_REF(&(NBACKREF(node))))