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 |