EscapedUnicodeCharactersCheck false positive in lowercase escape sequences

Rule S2973 (EscapedUnicodeCharactersCheck) allows certain Unicode white space characters to use \u notation. However, these exceptions are only allowed if all the hex digits are uppercase. For example, \uFEFF is allowed but \ufeff is not.

Hi @dscorbett,

Thanks a lot for you feedback and contribution. It’s truly a FP, created a ticket to fix it:

I’ve seen you PR about this issue. Thanks a lot for you participation. We’ll be back to you soon.

Kind regards,

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