anchor.diff:      (when (prompt-for-y-or-n-p "Save file")
         (save-buffer)))
     (let ((file (buffer-filename (current-buffer))))
  -    (refresh-output-buffer)
       (lisp-eval-async `(swank:compile-file-for-emacs ,file t)
                        #'compilation-finished)))
   
  
positive.code:                  (end point))
        (scan-lists end 1 0)
        (let ((string (points-to-string start end)))
          (refresh-output-buffer)
          (if (ppcre:scan "^\\(defvar(?:\\s|$)" string)
              (re-eval-defvar string)
              (interactive-eval string))))))
  
  (define-command lisp-eval-region (start end) ("r")
    (check-connection)
    (refresh-output-buffer)
    (eval-with-transcript
     `(swank:interactive-eval-region
       ,(points-to-string start end))))
  
negative.code: 
  (define-command lisp-eval-last-expression () ()
    (check-connection)
    (with-point ((start (current-point))
                 (end (current-point)))
      (form-offset start -1)
  