From: Magnus Jacobsson <magnus.jacobsson@berotec.se>
Date: Sat, 3 Oct 2020 14:14:00 +0000 (+0200)
Subject: Explicitly specify -? as an option in mm2gv
X-Git-Tag: 2.46.0~20^2^2~47^2~3
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=e35f920c70feb24152082bdb448c9037560dde5b;p=graphviz

Explicitly specify -? as an option in mm2gv
---

diff --git a/cmd/tools/mm2gv.c b/cmd/tools/mm2gv.c
index 0bf67c189..73a1f6a97 100644
--- a/cmd/tools/mm2gv.c
+++ b/cmd/tools/mm2gv.c
@@ -391,7 +391,7 @@ static void init(int argc, char **argv, parms_t * p)
 
     cmd = argv[0];
     opterr = 0;
-    while ((c = getopt(argc, argv, ":o:uvclU:")) != -1) {
+    while ((c = getopt(argc, argv, ":o:uvclU:?")) != -1) {
 	switch (c) {
 	case 'o':
 	    p->outf = openF(optarg, "w");
@@ -421,7 +421,7 @@ static void init(int argc, char **argv, parms_t * p)
 	    fprintf(stderr, "%s: option -%c missing argument - ignored\n", cmd, optopt);
 	    break;
  	case '?':
-	    if (optopt == '?')
+	    if (optopt == '\0')
 		usage(0);
 	    else {
 		fprintf(stderr,