From: Magnus Jacobsson <Magnus.Jacobsson@berotec.se>
Date: Tue, 20 Oct 2020 06:08:51 +0000 (+0200)
Subject: Fix bcomps -? to actually print usage instead of error on macOS
X-Git-Tag: 2.46.0~20^2^2~15^2~21
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=527c5daea4db952d4006e7b321f86dac40af0e2b;p=graphviz

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

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

diff --git a/cmd/tools/bcomps.c b/cmd/tools/bcomps.c
index a48b73adc..141b354af 100644
--- a/cmd/tools/bcomps.c
+++ b/cmd/tools/bcomps.c
@@ -358,7 +358,7 @@ static void init(int argc, char *argv[])
 	    fprintf(stderr, "bcomps: option -%c missing argument - ignored\n", optopt);
 	    break;
 	case '?':
-	    if (optopt == '\0')
+	    if (optopt == '\0' || optopt == '?')
 		usage(0);
 	    else {
 		fprintf(stderr,