ERR31            2293 srclib/pcre/pcre.c       *errorptr = (ptr[1] == ':')? ERR13 : ERR31;
ERR31            2372 srclib/pcre/pcre.c           *errorptr = ERR31;
ERR31              58 srclib/pcre/pcreposix.c   ERR31, ERR32, ERR33, ERR34, ERR35, ERR36, ERR37, ERR38, ERR39, ERR40,