MaybeParsePerlCCEscape 1735 third_party/re2/re2/parse.cc     UGroup *g = MaybeParsePerlCCEscape(s, flags_);
MaybeParsePerlCCEscape 2190 third_party/re2/re2/parse.cc         UGroup *g = MaybeParsePerlCCEscape(&t, ps.flags());