From 90e477cde0e9c2f7d8e085efa19b2fe2d0f9aae5 Mon Sep 17 00:00:00 2001
From: Tavian Barnes <tavianator@gmail.com>
Date: Sat, 2 Apr 2011 18:26:56 -0400
Subject: Print usage info to stderr on invalid options.

---
 dimension/main.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'dimension')

diff --git a/dimension/main.c b/dimension/main.c
index 6e40c08..80bc6e6 100644
--- a/dimension/main.c
+++ b/dimension/main.c
@@ -81,11 +81,12 @@ main(int argc, char **argv)
       break;
 
     case '?':
-      print_usage(stdout, argv[0]);
       /* '?' is returned as an error code too */
       if (optopt == 0) {
+        print_usage(stdout, argv[0]);
         return EXIT_SUCCESS;
       } else {
+        print_usage(stderr, argv[0]);
         return EXIT_FAILURE;
       }
     case DMNSN_OPT_VERSION:
-- 
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