Program language menu in Configuration window is not correctly sorted

Added file iso639-1.utf8 correcting the problems discribed

This fix is wrong because part native names of languages begin with a lowercase chars.

http://en.wikipedia.org/wiki/List_of_ISO_639-1_codes

Not sure. The list of native names in http://en.wikipedia.org/wiki/List_of_ISO_639-1_codes is obviously (partially) wrong, e.g. français should be Français. I suspect this list is not at all accurate.

And unfortunately, official ISO 639-2 doesn't give official native spelling of languages: http://www.loc.gov/standards/iso639-2/php/code_list.php

Anyway, how do you suggest we can fix this?

(As a french speaker, I would like at least to see Français with a correct spelling and capitalization ;-))

I just checked for some languages and it appears indeed that the list of http://en.wikipedia.org/wiki/List_of_ISO_639-1_codes isn't accurate at all.

Some examples quickly found:

Afaraf should be Qafár af (http://en.wikipedia.org/wiki/Afar_language)
aragonès should be Aragonés (http://an.wikipedia.org/wiki/Idioma_aragonès)
авар мацӀ should be Авар мацӀ (http://en.wikipedia.org/wiki/Avar_language)
avestan should be Avestan (http://en.wikipedia.org/wiki/Avestan_language)
...

Well... I checked for some languages too and found next documents:
http://people.w3.org/rishida/names/languages.html
http://en.wikipedia.org/wiki/ISO_639-1_language_matrix
http://www.geonames.de/languages.html

+ http://dl.dropbox.com/u/457027/iso639.txt (native name for french language is français)

And wiki-related sources:
+ http://toolserver.org/~pathoschild/iso639db/
+ http://en.wiktionary.org/wiki/Appendix:ISO_639-1_language_codes
+ http://en.wikipedia.org/wiki/List_of_ISO_639-2_codes

Obviously, there are a lot of errors (or capitalisation inconsistencies) in these lists. I exhaustively parsed the native Wikipedia pages (when existing) of all languages listed in our file and this shows a lot of inconsistencies and errors in the different sources. As a translator, I beg to know pretty well my own language and can tell you with certainty that in such situations we always capitalize the first letter of menus.

As a solution, I'll suggest to go with Wikipedia names of languages, which are at least consistent and correctly sorted. If you'll decide do go this way, here's another patch for file iso639-1.utf8. This patch fixes other errors in the file.

If you don't want to change the file, we have to correct this messy menu with another solution: fix sorting of language name strings in the routine StelTranslator::initIso639_1LanguageCodes.

Diff: http://bazaar.launchpad.net/~stellarium/stellarium/trunk/revision/5721

This fix reverted the changes from the Bug #815859.

Thanks for note - fixed!