diff -Naur cdargs-1.35/contrib/cdargs-bash.sh cdargs-1.35_patched/contrib/cdargs-bash.sh
--- cdargs-1.35/contrib/cdargs-bash.sh	2006-03-03 00:28:17.000000000 +0100
+++ cdargs-1.35_patched/contrib/cdargs-bash.sh	2008-03-08 11:02:21.000000000 +0100
@@ -1,5 +1,3 @@
-#!/bin/sh
-
 # (C) 2002-2003 Dan Allen and Stefan Kamphausen
 
 # Written by Dan Allen <dan@mojavelinux.com>
@@ -166,7 +164,7 @@
     local tmpfile

     # first clear any bookmarks with this same alias, if file exists
-    if [[ "$CDARGS_NODUPS" && -e "$HOME/.cdargs" ]]; then
+    if [ "$CDARGS_NODUPS" -a -e "$HOME/.cdargs" ]; then
         tmpfile=`echo ${TEMP:-${TMPDIR:-/tmp}} | sed -e "s/\\/$//"`
         tmpfile=$tmpfile/cdargs.$USER.$$.$RANDOM
         grep -v "^$1 " "$HOME/.cdargs" > $tmpfile && 'mv' -f $tmpfile "$HOME/.cdargs";
@@ -256,4 +254,11 @@
   complete $nospace -S / -X '*/' -F _cdargs_aliases cv cb cdb
 }

+# we do not support anything besides bash completion
+# (however patches to support other shells are very welcome)
+
+if [ -z "${BASH_VERSION}" ]; then
+    return 100
+fi
+
 _cdargs_complete
diff -Naur cdargs-1.35/contrib/cdargs-tcsh.csh cdargs-1.35_patched/contrib/cdargs-tcsh.csh
--- cdargs-1.35/contrib/cdargs-tcsh.csh	2005-11-06 11:58:13.000000000 +0100
+++ cdargs-1.35_patched/contrib/cdargs-tcsh.csh	2008-03-08 11:02:29.000000000 +0100
@@ -1,5 +1,3 @@
-#!/bin/csh
-
 # (C) 2002-2005 Stefan Kamphausen
 
 # (T)CShell extensions written by