...as I do a lot of unicode handling in my code

Just to avoid confusion:  uuencoding has nothing directly to do with Unicode.

Note the difference between upper and lower case U. From pack: 

               u   A uuencoded string.
               U   A Unicode character number.  Encodes to UTF-8 inter
+nally
                   (or UTF-EBCDIC in EBCDIC platforms).

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In reply to Re^2: UU-decode unpack of empty string yields undefined value by almut
in thread UU-decode unpack of empty string yields undefined value by AnomalousMonk

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