ONIG_SYN_STRICT_CHECK_BACKREF 3412 regparse.c     	if (IS_SYNTAX_BV(syn, ONIG_SYN_STRICT_CHECK_BACKREF)) {
ONIG_SYN_STRICT_CHECK_BACKREF 3482 regparse.c     	    if (IS_SYNTAX_BV(syn, ONIG_SYN_STRICT_CHECK_BACKREF)) {
ONIG_SYN_STRICT_CHECK_BACKREF 3499 regparse.c     	    if (IS_SYNTAX_BV(syn, ONIG_SYN_STRICT_CHECK_BACKREF)) {