From: Magnus Jacobsson <magnus.jacobsson@berotec.se>
Date: Sun, 4 Oct 2020 18:56:14 +0000 (+0200)
Subject: Explicitly specify -? as an option in nop
X-Git-Tag: 2.46.0~20^2^2~47^2~7
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=af8be8135996cc19c573d5e9965ec094528260eb;p=graphviz

Explicitly specify -? as an option in nop
---

diff --git a/cmd/tools/nop.c b/cmd/tools/nop.c
index 008a5fc8a..7cdbc9ed9 100644
--- a/cmd/tools/nop.c
+++ b/cmd/tools/nop.c
@@ -42,13 +42,13 @@ static void init(int argc, char *argv[])
     int c;
 
     opterr = 0;
-    while ((c = getopt(argc, argv, "p")) != -1) {
+    while ((c = getopt(argc, argv, "p?")) != -1) {
 	switch (c) {
 	case 'p':
 	    chkOnly = 1;
 	    break;
 	case '?':
-	    if (optopt == '?')
+	    if (optopt == '\0')
 		usage(0);
 	    else {
 		fprintf(stderr, "nop: option -%c unrecognized\n",