UNKNOWN_ENC      1478 third_party/expat/files/lib/xmltok.c   return UNKNOWN_ENC;
UNKNOWN_ENC        60 third_party/expat/files/lib/xmltok_ns.c   if (i == UNKNOWN_ENC)
UNKNOWN_ENC        85 third_party/expat/files/lib/xmltok_ns.c   if (i == UNKNOWN_ENC)