LookupGroup      1422 third_party/re2/re2/parse.cc   return LookupGroup(name, posix_groups, num_posix_groups);
LookupGroup      1426 third_party/re2/re2/parse.cc   return LookupGroup(name, perl_groups, num_perl_groups);
LookupGroup      1434 third_party/re2/re2/parse.cc   return LookupGroup(name, unicode_groups, num_unicode_groups);