I think thats probably a Windows thing; when I call perl from the pipe first, your code works perfectly.
fyi, I'm using ActiveState v5.8.8.822 
type highlight.pl | perl highlight.pl

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In reply to Re^3: Test if STDOUT is attached to console or shell redirected filehandle by desemondo
in thread Test if STDOUT is attached to console or shell redirected filehandle by desemondo

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