stdWrap_override does not override the current value if new value is "0"
EXT:sysext/frontend/Classes/ContentObject/ContentObjectRenderer.php::stdWrap_override does not override
$content variable with a value, if this new value consists of a single symbol "0". This is for example necessary, if a result of TypoScript condition should be overriden.
It should be at least possible to override the existing TypoScript content with a string containing a single symbol "0".
It must be also considered, whether every content presenting in
$conf['override'] should be taken as replacement. In case, if overriding should not occur due to appropriate override condition, than
$conf['override'] key can be completely removed from
$conf array. The only test, if the content is to be overridden can then be alone the existence of