Interestingly, the utf8::utf8() function is not documented (Strawberry 5.14.4.1, online 5.18.0), although it exists. What does it do?

Update: Sorry, I was confused by Perl's autovivification behavior.

>perl -wMstrict -le
"print exists &utf8::is_utf8 ? 'yes' : 'no';
 print \&utf8::is_utf8;
 ;;
 print exists &utf8::utf8 ? 'yes' : 'no';
 print \&utf8::utf8;
"
yes
CODE(0x68c66c)
no
CODE(0x68c17c)
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