Das ß hats geschafft

[pl]

Perl unterstützt das schon lange:

# LATIN CAPITAL LETTER SHARP S 
# from codepoint
my $uc = pack "U", 0x1E9E;

# upper to lower
my $lc = lc $uc;

# show octets
use bytes;
print "@{[unpack('C*', $lc)]}"; # 195 159