ONIG_SYN_OP_ESC_VBAR_ALT 3217 ext/mbstring/oniguruma/regparse.c       if (! IS_SYNTAX_OP(syn, ONIG_SYN_OP_ESC_VBAR_ALT)) break;
ONIG_SYN_OP_ESC_VBAR_ALT   89 ext/mbstring/oniguruma/regsyntax.c     ONIG_SYN_OP_ESC_LPAREN_SUBEXP | ONIG_SYN_OP_ESC_VBAR_ALT |
ONIG_SYN_OP_ESC_VBAR_ALT  110 ext/mbstring/oniguruma/regsyntax.c     ONIG_SYN_OP_ESC_VBAR_ALT |