From e0d77dc865d860666bf792f0a6c1aa0f51feb7dc Mon Sep 17 00:00:00 2001
From: andig <cpuidle@gmx.de>
Date: Fri, 22 Dec 2023 22:59:26 +0100
Subject: [PATCH] Mqtt: use - to remove vehicle (#11192)

---
 provider/mqtt/client.go | 2 +-
 server/mqtt.go          | 3 ++-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/provider/mqtt/client.go b/provider/mqtt/client.go
index 98b4ef6f9f..e593246435 100644
--- a/provider/mqtt/client.go
+++ b/provider/mqtt/client.go
@@ -129,7 +129,7 @@ func (m *Client) Publish(topic string, retained bool, payload interface{}) error
 	return nil
 }
 
-// Listen validates uniqueness and registers and attaches listener
+// Listen attaches listener to slice of listeners for given topic
 func (m *Client) Listen(topic string, callback func(string)) error {
 	m.mux.Lock()
 	m.listener[topic] = append(m.listener[topic], callback)
diff --git a/server/mqtt.go b/server/mqtt.go
index 3ab374367a..f52c414494 100644
--- a/server/mqtt.go
+++ b/server/mqtt.go
@@ -287,7 +287,8 @@ func (m *MQTT) listenLoadpointSetters(topic string, site site.API, lp loadpoint.
 	}
 	if err == nil {
 		err = m.Handler.ListenSetter(topic+"/vehicle", func(payload string) error {
-			if payload == "" {
+			// https://github.com/evcc-io/evcc/issues/11184 empty payload is swallowed by listener
+			if payload == "-" {
 				lp.SetVehicle(nil)
 				return nil
 			}