From: Magnus Jacobsson <magnus.jacobsson@berotec.se>
Date: Sat, 3 Oct 2020 14:02:09 +0000 (+0200)
Subject: Show usage and exit non-zero for unsupported option in lefty
X-Git-Tag: 2.46.0~20^2^2~47^2~24
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=31c4b42eadd54d2285d9d0017a65d90a2be80d03;p=graphviz

Show usage and exit non-zero for unsupported option in lefty

Towards https://gitlab.com/graphviz/graphviz/-/issues/1843.
---

diff --git a/cmd/lefty/lefty.c b/cmd/lefty/lefty.c
index e49eaa7ac..25cf1eccd 100644
--- a/cmd/lefty/lefty.c
+++ b/cmd/lefty/lefty.c
@@ -471,7 +471,8 @@ static void processargs (int argc, char *argv[]) {
                 fclose(fp);
             fp = stdin;
         } else if (argv[0][0] == '-') {
-            fprintf (stderr, "option %s unrecognized - ignored\n", argv[0]);
+            fprintf (stderr, "option %s unrecognized\n", argv[0]);
+            usage(1);
         }
         else {
             if (fp != NULL && fp != stdin)