Why does os.LookupEnv("LANG") pick the wrong language?

Getting Help
1 
	s, _ := os.LookupEnv("LANG")
	fmt.Println(s)

This gives en_US.UTF-8 which is far from my computer language setting. How can I get accurate computer default language?

2

For Posix, a convention seems to be to use any of these environment variables, so maybe check for some other ones:

  • LANGUAGE
  • LC_ALL
  • LC_MESSAGES, LC_NUMERIC, LC_TIME, LC_COLLATE, and others
  • LANG

(Source)

On Windows, I see LC_CTYPE=“en_US.UTF-8”, but there’s also a Windows API function to get that information: GetSystemDefaultUILanguage. I’m not sure if there’s an equivalent for other OSes

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3

It turned out that the terminal in VS Code deliver another result than the raw terminal. So VS Code is to blame in this case. I assumed that VS Code gives a correct result. A special thank you to @hollowaykeanho for enlighten me about this.

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