How to define country code in the base locale arb files?

[yanshouwang]

Use case

I'm developing an app which provide en-US and zh-CN language. Since the intl need a base locale(without the script code or country code), I have to use app_en.arb and app_zh.arb as the fileName, and the @@locale have to be en and zh, but in this way the country code in the generated Locale is missed while the country code is used in some logic. Is it possible to set the @@locale to be en-US and zh-CN in this case?

I found there is a discuss about this, #92731，but the commit seems to be reverted?

Proposal

Make it possibe for developers define country code in the base locale arb files.

[danagbemava-nc]

This is requesting the same feature as #92731

Kindly continue the discussion in the original thread.

Closing this in favor of the issue linked above.

Thank you

[github-actions]

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