> when certain functions (e.g., lc) change their behavior depending on how the flag is set

That's the point you seem to be missing.

The function length must report different numbers of characters, if 2-4 bytes are supposed to represent a unicode entity because of the utf8-flag. Same for other functions.

Otherwise please be more specific about what lc does wrongly...

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

In reply to Re^3: Seeking Perl docs about how UTF8 flag propagates by LanX
in thread Seeking Perl docs about how UTF8 flag propagates by raygun

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