> your patch is way too complicated. You can simply check for
> command[i].cmd == NULL to print the error.
You're completely right. I don't know what I was thinking on.
> 
> And of course you have to follow the coding style. I am not joking with
> this one. It is the main reason for me to reject patches.
I've replaced 3-space-tabs with real tabs.

--- hcitool.c.orig	2007-12-28 20:06:58.000000000 +0100
+++ hcitool.c	2007-12-29 00:09:03.000000000 +0100
@@ -2329,5 +2329,11 @@
 		command[i].func(dev_id, argc, argv);
 		break;
 	}
-	return 0;
+
+	if(!command[i].cmd) {
+		fprintf(stderr, "\"%s\" isn't a valid command. Try --help for a list
of commands.\n", argv[0]);
+		exit(EXIT_FAILURE);
+	}
+
+	exit(EXIT_SUCCESS);
 }


	
	
		
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