Hrvoje Niksic <hniksic(a)iskon.hr&gt; writes: I was referring to the following: (when nil ;; This code crashes XEmacs! This requires further investigation. ;; I'm running Linux, and for me, XEmacs crashes in ;; Fmapconcat()->mapcar1(), after a GC that thrashes the stack. ;; Raymond Toy reports a similar crash under Solaris. (loop for (raw encoded) in bt-test-strings do ... Wouldn't directly hacking the RCS file help? Otherwise why don't we just remove the existing file and add a fresh copy? thanks. I have one, back from the time when you first added it. Gunnar