Fix crash on parse error

main.go

@@ -231,13 +231,13 @@ func usage() {
 
 func printResponse(out io.Writer, res response) {
 	if res.Error.Code != 0 {
-		fmt.Fprintf(out, "Error %d: %s", res.Error.Code, res.Error.Message)
+		fmt.Fprintf(out, "Error %d: %s\n", res.Error.Code, res.Error.Message)
 	} else if res.Result != nil {
 		switch result := res.Result.(type) {
 		case []interface{}:
 			for _, res := range result {
 				switch res := res.(type) {
-				case string, int, json.Number:
+				case string, float64, int, json.Number:
 					fmt.Fprintln(out, res)
 				default:
 					bs, _ := json.MarshalIndent(res, "", "    ")

parse.go

@@ -88,6 +88,10 @@ func parseCommand(line string) (command, error) {
 			parts := strings.Split(param, ",")
 			obj := map[string]string{}
 			for _, part := range parts {
+				if !strings.Contains(part, "=") {
+					obj[part] = ""
+					continue
+				}
 				kv := strings.SplitN(part, "=", 2)
 				obj[kv[0]] = kv[1]
 			}

parse_test.go

@@ -51,6 +51,13 @@ func TestParseCommand(t *testing.T) {
 				Params: []interface{}{"subscriber", "1234", map[string]interface{}{"foo": "bar 1", "baz   2": "quux 2"}},
 			},
 		},
+		{
+			`object update subscriber 1234 foo=,bar`,
+			command{
+				Method: "object.update",
+				Params: []interface{}{"subscriber", "1234", map[string]string{"foo": "", "bar": ""}},
+			},
+		},
 	}
 
 	for _, tc := range testcases {