From: Magnus Jacobsson <magnus.jacobsson@berotec.se>
Date: Sun, 4 Oct 2020 18:49:56 +0000 (+0200)
Subject: Explicitly specify -? as an option in cluster
X-Git-Tag: 2.46.0~20^2^2~47^2~13
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=393d2ed5091f77c162ca7b893d59080fe56422d1;p=graphviz

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

diff --git a/cmd/gvmap/cluster.c b/cmd/gvmap/cluster.c
index bf97ace4b..e5232bac9 100644
--- a/cmd/gvmap/cluster.c
+++ b/cmd/gvmap/cluster.c
@@ -99,7 +99,7 @@ static void init(int argc, char *argv[], opts_t* opts) {
   Verbose = 0;
 
   opts->clustering_method =  CLUSTERING_MODULARITY;
-  while ((c = getopt(argc, argv, ":vC:c:o:")) != -1) {
+  while ((c = getopt(argc, argv, ":vC:c:o:?")) != -1) {
     switch (c) {
     case 'c':
       if ((sscanf(optarg,"%d", &v) == 0) || (v < 0)) {
@@ -120,7 +120,7 @@ static void init(int argc, char *argv[], opts_t* opts) {
       Verbose = 1;
       break;
     case '?':
-      if (optopt == '?')
+      if (optopt == '\0')
 	usage(cmd, 0);
       else {
 	fprintf(stderr, " option -%c unrecognized\n",