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Don't reference non-existent values
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@ -1217,8 +1217,8 @@ local $file = @old ? $old[0]->{'file'} :
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local $lref = &read_file_lines($file);
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for(my $i=0; $i<@old || $i<@$values; $i++) {
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local $old = $old[$i];
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local $line = $values->[$i] eq "" ? $name :
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local $old = $i < @old ? $old[$i] : undef;
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local $line = $i < @$values || $values->[$i] eq "" ? $name :
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"$name = $values->[$i]";
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if ($old && defined($values->[$i])) {
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# Updating
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