$this->addFieldsIf( 'log_namespace', $this->fld_title || $this->fld_parsedcomment );
$this->addFieldsIf( 'log_title', $this->fld_title || $this->fld_parsedcomment );
$this->addFieldsIf( 'log_comment', $this->fld_comment || $this->fld_parsedcomment );
$this->addFieldsIf( 'log_namespace', $this->fld_title || $this->fld_parsedcomment );
$this->addFieldsIf( 'log_title', $this->fld_title || $this->fld_parsedcomment );
$this->addFieldsIf( 'log_comment', $this->fld_comment || $this->fld_parsedcomment );