ONIG_SYN_OP_ESC_VBAR_ALT 3457 regparse.c if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_VBAR_ALT)) break; ONIG_SYN_OP_ESC_VBAR_ALT 90 regsyntax.c ONIG_SYN_OP_ESC_LPAREN_SUBEXP | ONIG_SYN_OP_ESC_VBAR_ALT | ONIG_SYN_OP_ESC_VBAR_ALT 111 regsyntax.c ONIG_SYN_OP_ESC_VBAR_ALT |