onig_region_clear  701 ext/strscan/strscan.c     onig_region_clear(&(p->regs));
onig_region_clear  813 include/ruby/oniguruma.h void onig_region_clear P_((OnigRegion* region));
onig_region_clear  294 regexec.c        onig_region_clear(region);
onig_region_clear 4436 regexec.c          onig_region_clear(region);