TYPO3 Core

Not sure if its a problem, but in the example it looks like the field enclosure could be unset:

10 = TYPO3\CMS\Frontend\DataProcessing\CommaSeparatedValueProcessor
10 {
   # ...
   fieldEnclosure =
}

However in the code it is defined as:

// Set the field enclosure which is " by default
$fieldEnclosure = (string)$cObj->stdWrapValue('fieldEnclosure', $processorConfiguration, '"');

Therefore setting fieldEnclosure to '' results into it being set to the default value '"'