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use strict;
use warnings;
...
        print "2: $what\n";
    }
}

2: I have code which finds duplicates in 2 files and spits into 3 file
+s
1: I have code which finds duplicates in 2 text files
12: I now want it to ignore special characters such as (), ",", ', " e
+tc.
12: The slow lazy brown and green dog