[browser] HybridGlobalization Invariant function differs from non-Hybrid

[ilonatommy]

Running TurkishI_Is_Differently_LowerUpperCased_In_Turkish_Culture_NonBacktracking with HG fails on

Assert.True(cultInvariantRegex.IsMatch(input.ToUpperInvariant()));

Because ToUpperInvariant produces different string (differently normalized?), the regex fails. Maybe we can keep using managed invariant functions for invariant culture. If not, we have to treat this failure as a known difference between platforms.

input.ToUpperInvariant() -> HG: IIİI, ICU: IıİI

This is expected behavior of JS and generally, it's expected behavior for Turkish letters.

We can preserve C#-invariant behavior if we use ToUpper/Lower methods that are used for InvaraintGlobalization.

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Issue Details

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Running TurkishI_Is_Differently_LowerUpperCased_In_Turkish_Culture_NonBacktracking with HG fails on

Assert.True(cultInvariantRegex.IsMatch(input.ToUpperInvariant()));

Because ToUpperInvariant produces different string (differently normalized?), the regex fails. Maybe we can keep using managed invariant functions for invariant culture. If not, we have to treat this failure as a known difference between platforms.

Author:	ilonatommy
Assignees:	-
Labels:	arch-wasm, area-System.Globalization
Milestone:	-