diff -r defdd986c14d -r a9e7de970e5e configure
--- a/configure	Mon Sep 29 11:08:33 2008 +0000
+++ b/configure	Tue Oct 21 16:56:32 2008 +0000
@@ -285,9 +285,9 @@
 }
 
 # It's safer to change all ',' to spaces rather than setting IFS
-CONTRIB_list=$(echo "${CONTRIB_list}" |sed -r -e 's/,+/ /g;')
+CONTRIB_list=$(echo "${CONTRIB_list}" |sed -r -e 's/,+/ /g; s/ +/ /g; s/^ //g; s/ $//g;')
 if [ -n "${CONTRIB_list}" ]; then
-    has_or_abort lzcat
+    has_or_abort 'lzcat/'
     printf "Applying contributed code: "
     for c in ${CONTRIB_list}; do
         printf "${c}, "