zh-****-** tags

[Michael Everson]

James, and others:

We have many tags for Chinese:

zh
Chinese

zh-gan
Kan or Gan

zh-guoyu
Mandarin or Standard Chinese

zh-hakka
Hakka

zh-min
Min, Fuzhou, Hokkien, Amoy, or Taiwanese

zh-min-nan
Minnan, Hokkien, Amoy, Taiwanese, Southern Min, Southern Fujian,
Hoklo, Southern Fukien, Ho-lo

zh-wuu
Shanghaiese or Wu

zh-xiang
Hunanese or Xiang

zh-yue
Cantonese

zh-Hans
simplified Chinese

zh-Hant
traditional Chinese

The following are also proposed. Is it the case that each of the 
following tags represents a unique entity that cannot be represented 
without such a tag, and that differs from the others?

zh-Hant-CN
zh-Hans-CN

zh-Hans-HK
zh-Hant-HK

zh-Hans-MO
zh-Hant-MO

zh-Hant-SG
zh-Hans-SG

zh-Hans-TW
zh-Hant-TW

In other words, shall these be approved?
-- 
Michael Everson * * Everson Typography *  * http://www.evertype.com