*** ibuf-ext.el	        2015-09-28 22:17:18.133651830 +0900
--- ibuf-ext_patch1.el	2015-09-28 22:17:18.175651830 +0900
***************
*** 1402,1408 ****
    (if (zerop (ibuffer-count-marked-lines))
        (message "No buffers marked; use 'm' to mark a buffer")
      (let ((ibuffer-copy-filename-as-kill-result "")
! 	  (type (cond ((zerop arg)
  		       'full)
  		      ((= arg 4)
  		       'relative)
--- 1402,1408 ----
    (if (zerop (ibuffer-count-marked-lines))
        (message "No buffers marked; use 'm' to mark a buffer")
      (let ((ibuffer-copy-filename-as-kill-result "")
! 	  (type (cond ((or (null arg) (zerop arg))
  		       'full)
  		      ((= arg 4)
  		       'relative)