Olivier Galibert <galibert(a)pobox.com&gt; writes: What is your point? I still believe that symbol name should never be modified, and that `aset' should have signaled an error. Lisp programs should almost never modify random strings. If the string happened to come initially from a symbol name, then it is definitely a bad idea to modify it. Your code should modify only those strings that it created. `copy-sequence' -- Hrvoje Niksic <hniksic(a)srce.hr&gt; | Student at FER Zagreb, Croatia --------------------------------+-------------------------------- Which is worse: ignorance or apathy? Who knows? Who cares?