From be9dc06aaf1fa594a57ae467cf480d1d705cd028 Mon Sep 17 00:00:00 2001
From: SomberNight <somber.night@protonmail.com>
Date: Tue, 19 Dec 2023 14:18:29 +0000
Subject: [PATCH] contrib/add_cosigner: print "usage: ..." if called
 incorrectly

---
 contrib/add_cosigner | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/contrib/add_cosigner b/contrib/add_cosigner
index dc7c5c591..3205ef743 100755
--- a/contrib/add_cosigner
+++ b/contrib/add_cosigner
@@ -24,6 +24,10 @@ import importlib
 import subprocess
 
 
+if len(sys.argv) < 2:
+    print(f"usage: {os.path.basename(__file__)} <cosigner>", file=sys.stderr)
+    sys.exit(1)
+
 # cd to project root
 os.chdir(os.path.dirname(os.path.dirname(__file__)))