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diagnostics, splain
Wide character in print at 4.pl line 5. (#1) (S utf8) Perl met a wide character (>255) when it wasn't expecting one. This warning is by default on for I/O (like print). The eas +iest way to quiet this warning is simply to add the :utf8 layer to the output, e.g. binmode STDOUT, ':utf8'. Another way to turn off the warning is to add no warnings 'utf8'; but that is often closer to cheating. In general, you are supposed to explicitly mark the filehandle with an encoding, see open and "binmode" in perlfunc.

[Wide character in print ] Wide character in print -> Wide character in print

 [Wide character in] Wide character in -> Wide Character in Print Warning

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