chromatic/modern_perl_book — comment on commit ca11445d229f505b6298c169ae50707d24e5459a
File:  line 0
By zby:

"To avoid most Unicode problems, always decode to and from the appropriate encoding at the inputs and outputs of your program" - this might benefit with some qualification "When working with character data" or something. Binary data processing might be a minority in Perl programs - but it does happen - so this rule cannot be that automatic.