Mystery solved: After reading up the docs for fc I realized that Perl implements this Unicode standard for cases:

The docs also claim that fc is the only acceptable solution for comparing "case insensitive strings".

Unfortunately are we working with an IBM product°, which sees a difference between fields named "Straße" and "Strasse", while fc (and German readers) will consider them identical.

Now regarding uc of "ß", that's to be decided between the Unicode committee and German language authorities.

(this is not so much a problem for German readers but for CS and "equality of strings")

Cheers Rolf
(addicted to the Perl Programming Language :)
Wikisyntax for the Monastery

update

°) which is surprisingly fucked up in this respect https://www.ibm.com/docs/en/cognos-tm1/10.2.2?topic=pitf-unicodeupperlowercase-1

In reply to Re: uc and German eszett "ß" (Unicode standard) by LanX
in thread uc and German eszett "ß" by LanX

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