=item Malformed UTF-8 character (%s)
-(W utf8) Perl detected something that didn't comply with UTF-8 encoding rules.
+(S utf8) (F) Perl detected something that didn't comply with UTF-8
+encoding rules.
One possible cause is that you read in data that you thought to be in
UTF-8 but it wasn't (it was for example legacy 8-bit data). Another