ONIG_SYN_OP2_ESC_G_BRACE_BACKREF 3718 regparse.c           if (IS_SYNTAX_OP2(syn, ONIG_SYN_OP2_ESC_G_BRACE_BACKREF)) {
ONIG_SYN_OP2_ESC_G_BRACE_BACKREF  245 regsyntax.c          ONIG_SYN_OP2_ESC_G_BRACE_BACKREF |