$OUTPUT_FIELD_SEPARATOR only operates on comma separated fields, not arrays interpolated within double quotes. For that, you need to use $LIST_SEPARATOR. 

$" = "\n"; ## This may do what you intended.
print "\nArray Elements within Double Quotes :\n@files";

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Lingua non convalesco, consenesco et abolesco. -- Rule 1 has a caveat! -- Who broke the cabal?
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In reply to Re: Problem in OUTPUT_FIELD_SEPARATOR by BrowserUk
in thread Problem in OUTPUT_FIELD_SEPARATOR by Samy_rio

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