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for my $process_file ($rrconfig::locodata, $rrconfig::availlocodata) {
    open(my $data_file_handle, '<', $process_file) or die("$process_fi
+le: $!");
...
    }
    close $out_file_handle;
}

use File::Replace 'replace3';

...
    }
    $repl->finish;
}