anchor.diff:    (zerop (mod it (parse-integer number))))
     
   (def-filter :lower (it)
  -  (string-downcase (princ-to-string it)))
  +  (unless (null it)
  +    (string-downcase (princ-to-string it))))
   
   (def-filter :make_list (it)
     (coerce it 'list))
  
positive.code:     (template-error "filter truncatechars: The elision-string is is larger than the maximum length." )))
  
  (def-filter :upper (it)
    (string-upcase (princ-to-string it)))
  
  (def-filter :urlencode (it)
    (url-encode (princ-to-string it)))
  
negative.code:           :initial-value value))
  
  (def-filter :capfirst (it)
    (unless (null it)
      (string-capitalize (princ-to-string it))))
  
  (def-filter :cut (it charstring)
    (remove-if (lambda (s)
  