[bashrc] escaping find_up

.bashrc

@@ -47,7 +47,7 @@ fi
 #~# find_up () {
 #~#     path="$1"
 #~#     shift 1
-#~#     while [[ "`readlink -f $path`" != "/" ]];
+#~#     while [[ "`readlink -f -- \"$path\"`" != "/" ]];
 #~#     do
 #~#         find "$path"  -maxdepth 1 -mindepth 1 "$@"
 #~#         path=${path}/..