I'm trying to retain the double quotes and the comma delimiters that were part of the input file. I'd like to think that I can do this with text::csv_xs

Sure, see combine(). 

my $csv = Text::CSV->new ( { quote_space => 0 } )
                 or die "Cannot use CSV: ".Text::CSV->error_diag ();
 
my @columns = ("What, a nice day", "This is a fence", "Here is an,and 
+day");

print $csv->string() if $csv->combine(@columns);

[download]

generates the following line: 

"What, a nice day",This is a fence,"Here is an,and day"

[download]

In reply to Re^3: how to modify a field in a CSV file by Eliya
in thread how to modify a field in a CSV file by beerman

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