From f07e81d9c2e23eae71f70138ece321091bfc5fad Mon Sep 17 00:00:00 2001
From: Magnus Jacobsson <magnus.jacobsson@berotec.se>
Date: Fri, 2 Oct 2020 14:54:02 +0200
Subject: [PATCH] Show usage and exit non-zero for unsupported option in
 cluster

Towards https://gitlab.com/graphviz/graphviz/-/issues/1843.
---
 cmd/gvmap/cluster.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/cmd/gvmap/cluster.c b/cmd/gvmap/cluster.c
index 7c4c5c19d..bf97ace4b 100644
--- a/cmd/gvmap/cluster.c
+++ b/cmd/gvmap/cluster.c
@@ -123,9 +123,9 @@ static void init(int argc, char *argv[], opts_t* opts) {
       if (optopt == '?')
 	usage(cmd, 0);
       else {
-	fprintf(stderr, " option -%c unrecognized - ignored\n",
+	fprintf(stderr, " option -%c unrecognized\n",
 		optopt);
-	usage(cmd, 0);
+	usage(cmd, 1);
       }
       break;
     }
-- 
2.40.0