I'm trying to display a localized list of attached displays, and getting 
unexpected results in Carbon and Cocoa when attempting to determine the best 
localization. I did all the obvious-to-me Google searches without finding much 
except a couple of other people over the years having similar issues and no 
real resolution. Sample code and results follow. Hoping someone can point me in 
the right direction.

FWIW, I've tried both "en" and "English" for both the Info.plist development 
region and the localized resources folder in the app.

Thanks for any help.

Greg

- (NSString*)bestLocalization:(NSArray*)inChoices
{
  NSUserDefaults* theDefaults = [NSUserDefaults standardUserDefaults];
  NSArray* theUserSettings = [theDefaults objectForKey:@"AppleLanguages"];
  NSLog(@"User Settings: %@", theUserSettings);

  NSLog(@"Choices: %@", inChoices);

  NSArray* theBestOnes = [NSBundle preferredLocalizationsFromArray:inChoices];
  NSLog(@"Chose: %@", theBestOnes);

  return [theBestOnes objectAtIndex:0];
}

Mac mini (Early 2009) 10.6.3 with Dell 2007WFP:

User Settings: (English)
Choices: ("en_US")
Chose: ("en_US")

MacBook Core 2 Duo 10.6.3:

User Settings: (en, fr, ja, de, es, it, nl, sv, nb, da, fi, pt, "zh-Hans", 
"zh-Hant", ko, ru, pl, "pt-PT")
Choices: ("nl_NL", "da_DK", "pl_PL", "en_US", "nb_NO", "fr_FR", "pt_BR", 
"pt_PT", "zh_CN", "es_ES", "ja_JP", "ru_RU", "sv_SE", "zh_TW", "de_DE", 
"fi_FI", "it_IT", "ko_KR")
Chose: ("zh_CN")

MacBook Pro 10.5.8 plus Apple Cinema Display:

User Settings: (en, fr, ja, de, es, it, pt, "pt-PT", nl, sv, nb, da, fi, ru, 
pl, "zh-Hans", "zh-Hant", ko)
Choices: ("it_IT", "en_US", "ko_KR", "fi_FI", "nb_NO", "ru_RU", "zh_CN", 
"nl_NL", "de_DE", "ja_JP", "pl_PL", "es_ES", "fr_FR", "zh_TW", "da_DK", 
"sv_SE", "pt_BR", "pt_PT")
Chose: ("fr_FR")
User Settings: (en, fr, ja, de, es, it, pt, "pt-PT", nl, sv, nb, da, fi, ru, 
pl, "zh-Hans", "zh-Hant", ko)
Choices: ("it_IT", "en_US", "ko_KR", "fi_FI", "nb_NO", "ru_RU", "zh_CN", 
"nl_NL", "de_DE", "ja_JP", "pl_PL", "es_ES", "fr_FR", "zh_TW", "da_DK", 
"sv_SE", "pt_BR", "pt_PT")
Chose: ("fr_FR")
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