Perl programmers are probably all aware of the utf8 pragma, which turns on UTF-8 in your source code. This is actually a stumbling block for new programmers, who might think that utf8 makes your filehandles use UTF-8 by default, or automagically turns incoming data into UTF-8, and ensures outgoing data is all UTF-8 as well. Sadly, that's not the case.
However, one of the great things about perl5i is that it turns on Unicode. All of it. (more…)