Properly exit listening mode if Ctrl+C is pressed.

CHANGELOG.md

@@ -3,6 +3,7 @@
 ## UNRELEASED
 ### Changed
 - Properly close stream if `Ctrl+C` is pressed in interactive mode.
+- Properly close stream if `Ctrl+C` is pressed in listening mode.
 - Print OS, architecture and go version for flag `--version`.
 - Improve closing of connection.
 

main.go

@@ -38,6 +38,7 @@ func closeAndExit(client *xmpp.Client, cancel context.CancelFunc, err error) {
 	if err != nil {
 		log.Fatal(err)
 	}
+	os.Exit(0)
 }
 
 func readMessage(messageFilePath string) (string, error) {
@@ -519,6 +520,14 @@ func main() {
 		}
 	case *flagListen:
 		tz := time.Now().Location()
+		// Quit if ^C is pressed.
+		c := make(chan os.Signal, 1)
+		signal.Notify(c, os.Interrupt)
+		go func() {
+			for range c {
+				closeAndExit(client, cancel, nil)
+			}
+		}()
 		for {
 			v := <-msgc
 			switch {