From ab1739ba34f899b5c1ee709e9e7ab61ac94b4747 Mon Sep 17 00:00:00 2001
From: Stefan Tatschner <rumpelsepp@sevenbyte.org>
Date: Sun, 27 Nov 2016 11:21:05 +0000
Subject: [PATCH] cmd/syncthing: Trigger usage message on extra CLI parameters

fixes: #3690

GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/3763
---
 cmd/syncthing/main.go | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/cmd/syncthing/main.go b/cmd/syncthing/main.go
index 9ecb46fe..22eb1c56 100644
--- a/cmd/syncthing/main.go
+++ b/cmd/syncthing/main.go
@@ -278,6 +278,11 @@ func parseCommandLineOptions() RuntimeOptions {
 	flag.Usage = usageFor(flag.CommandLine, usage, longUsage)
 	flag.Parse()
 
+	if len(flag.Args()) > 0 {
+		flag.Usage()
+		os.Exit(2)
+	}
+
 	return options
 }