REG_OKAY,	"REG_OKAY",	"no errors detected",
REG_NOMATCH,	"REG_NOMATCH",	"failed to match",
REG_BADPAT,	"REG_BADPAT",	"invalid regexp (reg version 0.1)",
REG_ECOLLATE,	"REG_ECOLLATE",	"invalid collating element",
REG_ECTYPE,	"REG_ECTYPE",	"invalid character class",
REG_EESCAPE,	"REG_EESCAPE",	"invalid escape \\ sequence",
REG_ESUBREG,	"REG_ESUBREG",	"invalid backreference number",
REG_EBRACK,	"REG_EBRACK",	"brackets [] not balanced",
REG_EPAREN,	"REG_EPAREN",	"parentheses () not balanced",
REG_EBRACE,	"REG_EBRACE",	"braces {} not balanced",
REG_BADBR,	"REG_BADBR",	"invalid repetition count(s)",
REG_ERANGE,	"REG_ERANGE",	"invalid character range",
REG_ESPACE,	"REG_ESPACE",	"out of memory",
REG_BADRPT,	"REG_BADRPT",	"quantifier operand invalid",
REG_ASSERT,	"REG_ASSERT",	"\"can't happen\" -- you found a bug",
REG_INVARG,	"REG_INVARG",	"invalid argument to regex function",
REG_MIXED,	"REG_MIXED",	"character widths of regex and string differ",
REG_BADOPT,	"REG_BADOPT",	"invalid embedded option",
REG_IMPOSS,	"REG_IMPOSS",	"can never match",