From: Magnus Jacobsson <magnus.jacobsson@berotec.se>
Date: Sat, 3 Oct 2020 14:04:22 +0000 (+0200)
Subject: Show usage and exit non-zero for unsupported option in sccmap
X-Git-Tag: 2.46.0~20^2^2~47^2~19
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=e6035c8f6c98cbdbd4305a3ab70fe1a4034325bd;p=graphviz

Show usage and exit non-zero for unsupported option in sccmap

Towards https://gitlab.com/graphviz/graphviz/-/issues/1843.
---

diff --git a/doc/libgraph/sccmap.c b/doc/libgraph/sccmap.c
index 6808462b6..0c37efc2e 100644
--- a/doc/libgraph/sccmap.c
+++ b/doc/libgraph/sccmap.c
@@ -313,9 +313,11 @@ static void scanArgs(int argc, char **argv)
 		case '?':
 			if (optopt == '?')
 				usage(0);
-			else
-				fprintf(stderr, "%s: option -%c unrecognized - ignored\n",
+			else {
+				fprintf(stderr, "%s: option -%c unrecognized\n",
 						CmdName, optopt);
+				usage(1);
+			}
 			break;
 		}
 	}