From 15d326027827c168511f923e72c64e2131515e19 Mon Sep 17 00:00:00 2001
From: Alan Coopersmith <alan.coopersmith@oracle.com>
Date: Mon, 4 Nov 2013 23:14:22 -0800
Subject: Print which option was in error along with usage message

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Gaetan Nadon <memsize@videotron.ca>
---
 bmtoa.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

(limited to 'bmtoa.c')

diff --git a/bmtoa.c b/bmtoa.c
index 0394038..a9de614 100644
--- a/bmtoa.c
+++ b/bmtoa.c
@@ -130,10 +130,16 @@ main (int argc, char *argv[])
 		filename = NULL;
 		continue;
 	      case 'c':
-		if (++i >= argc) usage ();
+		if (++i >= argc) {
+		    fprintf(stderr, "%s: -chars requires an argument\n",
+			    ProgramName);
+		    usage ();
+		}
 		chars = argv[i];
 		continue;
 	      default:
+		fprintf(stderr, "%s: unrecognized option '%s'\n",
+			ProgramName, argv[i]);
 		usage ();
 	    }
 	} else {
-- 
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