Difference is due to the different behaviour of reverse() dependent on (list|scalar) context; see the perldoc on it. In the "non working" case, printf() causes the list context for func1() causes the list context for reverse(). Try forcing the scalar context... 

printf("String  after: %s\n\n", scalar func1($buf));

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In reply to Re^2: Module Style and Usage by parv
in thread Module Style and Usage by ozboomer

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