From: Ethan Brown
Subject: Re: Please help with copy-list.
Date: Wed, 01 Mar 1995 21:04:49 +0000
Message-ID: <ETHAN.95Mar1130449@melbourne>

In article <·······································@namaste.cc.columbia.edu> David J Topper <····@columbia.edu> writes:

   Hello,

[...]

   I have functions to move "the blank" NORTH,SOUTH, EAST and WEST.  These 
   functions use "fill" to replace items in the given list.  But no 
   matter how I try, I can't get it to work on a COPY of the given list.

[...]

Short answer:  use copy-tree.

"Why" is left to the student.

--Ethan Brown			                       
--Science Applications International Corp.             
--Geophysics Division  (·····@gso.saic.com)
--San Diego, CA 92121 (619) 458-2676