Show rsync help when called with no arg

bin/vdn-rsync

@@ -27,7 +27,7 @@ determine_redir_port() {
 
 declare -a options=()
 declare -a srcs=()
-dest=''
+declare -a dest=()
 guest=''
 while [[ $# -ne 0 ]]; do
   if [[ $1 == -* ]]; then
@@ -37,14 +37,14 @@ while [[ $# -ne 0 ]]; do
     srcs+=("$connection")
   else
     rewrite_connection "$1"
-    dest="$connection"
+    dest+=("$connection")
   fi
   shift
 done
 
 if [[ $guest ]]; then
   determine_redir_port
-else
-  error 'Utiliser rsync directement'
-fi
   rsync "${options[@]}" -e "ssh -g -p $sshRedirPort" "${srcs[@]}" "$dest"
+else
+  rsync "${options[@]}" "${srcs[@]}" "${dest[@]}"
+fi