From: Magnus Jacobsson <Magnus.Jacobsson@berotec.se>
Date: Tue, 20 Oct 2020 06:32:16 +0000 (+0200)
Subject: Fix sccmap -? to actually print usage instead of error on macOS
X-Git-Tag: 2.46.0~20^2^2~15^2~10
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=ac5f5c35a7b271a29f47391b33a25500fd46ec15;p=graphviz

Fix sccmap -? to actually print usage instead of error on macOS

Towards https://gitlab.com/graphviz/graphviz/-/issues/1852.
---

diff --git a/cmd/tools/sccmap.c b/cmd/tools/sccmap.c
index f9a04dac8..2bd1f72d2 100644
--- a/cmd/tools/sccmap.c
+++ b/cmd/tools/sccmap.c
@@ -363,7 +363,7 @@ static void scanArgs(int argc, char **argv)
 	    fprintf(stderr, "%s: option -%c missing argument - ignored\n", CmdName, optopt);
 	    break;
 	case '?':
-	    if (optopt == '\0')
+	    if (optopt == '\0' || optopt == '?')
 		usage(0);
 	    else {
 		fprintf(stderr, "%s: option -%c unrecognized\n",