onig_region_clear  658 ext/strscan/strscan.c     onig_region_clear(&(p->regs));
onig_region_clear  707 include/ruby/oniguruma.h void onig_region_clear P_((OnigRegion* region));
onig_region_clear  226 regexec.c        onig_region_clear(region);
onig_region_clear 3745 regexec.c          onig_region_clear(region);