From 481c59dfad9dc6fb29eaf338d357d28ce0a4a98f Mon Sep 17 00:00:00 2001
From: Magnus Jacobsson <magnus.jacobsson@berotec.se>
Date: Fri, 2 Oct 2020 14:56:10 +0200
Subject: [PATCH] Show usage and exit non-zero for unsupported option in
 edgepaint

Towards https://gitlab.com/graphviz/graphviz/-/issues/1843.
---
 cmd/edgepaint/edgepaintmain.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/cmd/edgepaint/edgepaintmain.c b/cmd/edgepaint/edgepaintmain.c
index af63bb994..18ab2ec58 100644
--- a/cmd/edgepaint/edgepaintmain.c
+++ b/cmd/edgepaint/edgepaintmain.c
@@ -182,9 +182,11 @@ static void init(int argc, char *argv[], real *angle, real *accuracy, char **inf
     case '?':
       if (optopt == '\0')
 	usage(cmd, 0);
-      else
-	fprintf(stderr, "option -%c unrecognized - ignored\n",
+      else {
+	fprintf(stderr, "option -%c unrecognized\n",
 		optopt);
+	usage(cmd, 1);
+      }
       break;
     }
   }
-- 
2.50.1