(defvar +whitespace-chars+
'(#\space #\tab #\newline #\return
;; Tested: sbcl unicode, allegrocl, openmcl,clisp use #\no-break_space
(defvar +whitespace-chars+
'(#\space #\tab #\newline #\return
;; Tested: sbcl unicode, allegrocl, openmcl,clisp use #\no-break_space