ONIG_OPTIMIZE_EXACT_BM 4912 regcomp.c      		       ? ONIG_OPTIMIZE_EXACT_BM : ONIG_OPTIMIZE_EXACT_BM_NOT_REV);
ONIG_OPTIMIZE_EXACT_BM 3164 regexec.c        case ONIG_OPTIMIZE_EXACT_BM:
ONIG_OPTIMIZE_EXACT_BM 3288 regexec.c        case ONIG_OPTIMIZE_EXACT_BM: