onig_name_to_backref_number  715 include/ruby/oniguruma.h int onig_name_to_backref_number P_((OnigRegex reg, const OnigUChar* name, const OnigUChar* name_end, OnigRegion *region));
onig_name_to_backref_number  999 re.c               num = onig_name_to_backref_number(RREGEXP(regexp)->ptr,
onig_name_to_backref_number 1598 re.c               num = onig_name_to_backref_number(RREGEXP(regexp)->ptr,