Fix a bug in this code that made it do the wrong thing when an option

guido · guido · commit 05a9bcb52ec3 · 1997-09-30T22:00:13.000Z
was a single '-'. Thanks to Andrew Kuchling. git-svn-id: http://svn.python.org/projects/python/trunk@8841 6015fed2-1504-0410-9fe1-9d1591cc4771
diff --git a/Python/getopt.c b/Python/getopt.c
@@ -62,7 +62,10 @@ char optstring[];
 		opt_ptr = &argv[optind++][1]; 
 	}
 
-	if ((ptr = strchr(optstring, option = *opt_ptr++)) == NULL) {
+	if ( (option = *opt_ptr++) == '\0')
+	  return -1;
+	
+	if ((ptr = strchr(optstring, option)) == NULL) {
 		if (opterr)
 			fprintf(stderr, "Unknown option: -%c\n", option);
 
