How Can I Access and Use UTF-8 Locale on Windows?

Accessing UTF-8 Locale on Windows

Problem:
Translating code that assumes the use of "en_US.UTF-8" locale to Windows requires identifying the equivalent locale and ensuring its availability.

Answer:

Historically, UTF-8 was not supported as the system locale in Windows due to compatibility concerns. However, Microsoft has introduced gradual support for UTF-8 locales:

Method 1 (Windows 10 and above):

• Enable "Beta: Use Unicode UTF-8 for worldwide language support" through Region settings.
• Use setlocale(LC_ALL, ".utf8") to configure UTF-8 encoding.

Method 2 (Older Windows Versions):

• Use app-local deployment or static linking with Windows SDK version 17134 or later.
• Enable UTF-8 through a static link or setlocale as described in Method 1.

Recent Updates:

• Since 2019, programs can use the UTF-8 locale without enabling the beta flag.
• Use the following options when compiling with MSVC: /execution-charset:utf-8 or /utf-8.
• Set ActiveCodePage property in the appxmanifest file.

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