3 Locales

The Tru64 UNIX operating system supports different Chinese locales for different countries and areas. These include Taiwan, People's Republic of China (PRC), and Hong Kong. Table 3-1 shows the valid Chinese locales with different countries, codesets, and collating sequences.

Note
zh_TW is an alias of zh_TW.eucTW, and zh_CN is an alias of zh_CN.dechanzi.

Table 3-1: Chinese Locales

Codeset	Locale	Collation Sequence
DEC Hanyu	zh_TW zh_TW.dechanyu zh_TW.dechanyu@radical zh_TW.dechanyu@stroke zh_TW.dechanyu@chuyin zh_HK.dechanyu	Internal code Internal code Radical Stroke Chuyin (Phonetic) Internal code
Taiwanese EUC	zh_TW.eucTW zh_TW.eucTW@radical zh_TW.eucTW@stroke zh_TW.eucTW@chuyin zh_HK.eucTW	Internal code Radical Stroke Chuyin (Phonetic) Internal code
Big-5	zh_TW.big5 zh_TW.big5@radical zh_TW.big5@stroke zh_TW.big5@chuyin zh_HK.big5	Internal code Radical Stroke Chuyin (Phonetic) Internal code
DEC Hanzi	zh_CN zh_CN.dechanzi zh_CN.dechanzi@radical zh_CN.dechanzi@stroke zh_CN.dechanzi@pinyin zh_HK.dechanzi	Internal code Internal code Radical Stroke Pinyin (Phonetic) Internal code
GBK	zh_CN.GBK	Internal code (however, all characters in GB 2312 character set are ordered first, followed by GBK extension characters)
GB18030	zh_CN.GB18030	Internal code (however, all characters in GB 2312 character set are ordered first, followed by GBK characters not already ordered, followed by GB18030 characters not already ordered)
UTF-8	zh_CN.UTF-8 zh_TW.UTF-8 zh_HK.UTF-8	zh_CN.GBK zh_TW.dechanyu zh_HK.dechanyu

The collation sequence for the GBK locale is further refined so that characters in the GB 2312 character set are ordered first followed by GBK extension characters.

The collation sequence for the GB18030 locale is further refined so that characters in the GB 2312 character set are ordered first, followed by GBK characters not already ordered, followed by GB18030 characters not already ordered.

Locales that support the same country and codeset are basically the same. The radical, stroke, pinyin, and chuyin modifiers after the at (@) sign specify different criterion for collation and sorting. Moreover, the characters defined in character set standards have collating precedence over user-defined characters, which, in turn, have precedence over undefined or reserved characters.

The dechanyu, eucTW, and dechanzi locales support locale names with @ucs4 modifiers. The @ucs4 modifier indicates that UCS-4 is used as the internal processing code. However, these locales are the same as the locales without the @ucs4 modifier. The @ucs4 subset is provided for backward compatibility and may be removed in the future. See l10n_intro(5) for more information.

If you are using DECwindows Motif, you can select the locale through the Language Menu of Session Manager. If you are using CDE, you can select the locale using the language menu on the CDE login screen. If you are superuser, you can use the SYSMAN I18NCONFIG utility to select a locale and define it as the system default.

The applicable locales are shown in Table 3-2.

Table 3-2: Chinese Language Names

Locale	Language Name
zh_TW	Traditional Chinese Taiwan
zh_TW.dechanyu	Traditional Chinese Taiwan (DEC Hanyu)
zh_TW.eucTW	Traditional Chinese Taiwan (EUC)
zh_TW.big5	Traditional Chinese Taiwan (Big5)
zh_TW.UTF-8	Traditional Chinese Taiwan (Unicode)
zh_HK.dechanyu	Traditional Chinese Hong Kong (DEC Hanyu)
zh_HK.dechanzi	Simplified Chinese Hong Kong (DEC Hanzi)
zh_HK.eucTW	Traditional Chinese Hong Kong (EUC)
zh_HK.big5	Traditional Chinese Hong Kong (Big5)
zh_HK.UTF-8	Traditional Chinese Hong Kong (Unicode)
zh_CN	Simplified Chinese PRC
zh_CN.dechanzi	Simplified Chinese PRC (DEC Hanzi)
zh_CN.GBK	Simplified Chinese PRC (GBK)
zh_CN.GB18030	Simplified Chinese PRC (GB18030)
zh_CN.UTF-8	Simplified Chinese PRC (Unicode)

Note
For DECwindows Motif and CDE, the locale modifier is ignored.