[Webkit-unassigned] [Bug 163096] window.navigator.language incorrectly returns all lowercase string

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=163096

--- Comment #3 from Chris Dumez <cdumez at apple.com> ---
As per https://developer.apple.com/reference/corefoundation/1666963-cflocale?language=objc , CFLocale is using BCP-47 language tags. Our Mac implementation is relying on CFLocaleCopyPreferredLanguages() which does return BCP-47 language tags.

However, we then call httpStyleLanguageCode() on them which alters their format (and lower cases them).

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