reg_errcode_t

type reg_errcode_t = (

  REG_ENOSYS = - 1,

  REG_NOERROR = 0,

  REG_NOMATCH = 1,

  REG_BADPAT = 2,

  REG_ECOLLATE = 3,

  REG_ECTYPE = 4,

  REG_EESCAPE = 5,

  REG_ESUBREG = 6,

  REG_EBRACK = 7,

  REG_EPAREN = 8,

  REG_EBRACE = 9,

  REG_BADBR = 10,

  REG_ERANGE = 11,

  REG_ESPACE = 12,

  REG_BADRPT = 13,

  REG_EEND = 14,

  REG_ESIZE = 15,

  REG_ERPAREN = 16

);