ONIG_OPTIMIZE_EXACT_BM 5316 regcomp.c      		       ? ONIG_OPTIMIZE_EXACT_BM : ONIG_OPTIMIZE_EXACT_BM_NOT_REV);
ONIG_OPTIMIZE_EXACT_BM 3846 regexec.c        case ONIG_OPTIMIZE_EXACT_BM:
ONIG_OPTIMIZE_EXACT_BM 3973 regexec.c        case ONIG_OPTIMIZE_EXACT_BM: