Alt               163 third_party/re2/re2/compile.cc   Frag Alt(Frag a, Frag b);
Alt               751 third_party/re2/re2/compile.cc         f = Alt(f, child_frags[i]);
Alt               205 third_party/re2/re2/prefilter.cc   static Info* Alt(Info* a, Info* b);
Alt               610 third_party/re2/re2/prefilter.cc         info = Alt(info, child_args[i]);