ONIG_SYN_DIFFERENT_LEN_ALT_LOOK_BEHIND 3132 regcomp.c          if (IS_SYNTAX_BV(env->syntax, ONIG_SYN_DIFFERENT_LEN_ALT_LOOK_BEHIND))
ONIG_SYN_DIFFERENT_LEN_ALT_LOOK_BEHIND   55 regparse.c           ONIG_SYN_DIFFERENT_LEN_ALT_LOOK_BEHIND |
ONIG_SYN_DIFFERENT_LEN_ALT_LOOK_BEHIND  155 regsyntax.c      , ( SYN_GNU_REGEX_BV | ONIG_SYN_DIFFERENT_LEN_ALT_LOOK_BEHIND )