REG_ECOLLATE       48 ext/ereg/regex/regex.h #define	REG_ECOLLATE	 3
REG_ECOLLATE       48 ext/mbstring/oniguruma/onigposix.h #define REG_ECOLLATE         3
REG_ECOLLATE       81 ext/pcre/pcrelib/pcreposix.h REG_ECOLLATE,    /* collation error - not relevant */