From d30dcb835d36d999d3eee3014ab55189d0f77d11 Mon Sep 17 00:00:00 2001
From: Magnus Jacobsson <magnus.jacobsson@berotec.se>
Date: Fri, 2 Oct 2020 15:02:46 +0200
Subject: [PATCH] Show usage and exit non-zero for unsupported option in gvmap

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

diff --git a/cmd/gvmap/gvmap.c b/cmd/gvmap/gvmap.c
index 66429e77b..9a64c779b 100644
--- a/cmd/gvmap/gvmap.c
+++ b/cmd/gvmap/gvmap.c
@@ -392,8 +392,8 @@ init(int argc, char **argv, params_t* pm)
       if (optopt == '?')
         usage(cmd, 0);
       else {
-        fprintf(stderr, " option -%c unrecognized - ignored\n", optopt);
-        usage(cmd, 0);
+        fprintf(stderr, " option -%c unrecognized\n", optopt);
+        usage(cmd, 1);
       }
       break;
     }
-- 
2.50.1