Hello Joachim,
thanks for your reply. The Uighurs (also written: Uyghurs), we, use two writing systems (Arabic script & Latin Script). The language pack that I have posted (made by somebody else) uses Latin Script.
My answer to your first question is no, we don't have non-latin characters apart from üöé.
You are right. we don't yet have a country code. UG is robbed by Uganda ha ha ha
The 3 letter code for Uighur is "uig"
http://www.w3.org/WAI/ER/IG/ert/iso639.htm . So, the official language code/ID for Uyghur is "uig". please DO NOT use "cn-xj".
Your suggestionn to use that flag may not please the Chinese authorities since it is forbidden to use that flag in China. As a symbol of democracy, it is a good thing to have a logo to identify a language/an ethnic group(We encourage the Chinese gouvernment to propose something like this to identify the Uyghur people, as well as Xinjiang Uyghur Autonomous Region). I have no objection to your proposition, you have the liberty to decide! thanks very much!
Regards,
Uyghur
N.B.: The official spelling of our ethnic group (8-9 million off.) by the ISO is now Uighur. But sometimes we also use "Uyghur", it is under disscussion. Please keep using "Uighur" for the moment.