The usage string directly printed by print_debugger_command() and

invoke_debugger_command() is now automatically preceded by
"usage: <command name>", so the string passed to
add_debugger_command_etc() shouldn't contain it anymore. 


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23584 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/system/kernel/debug/debug.cpp

@@ -879,29 +879,29 @@ status_t
 debug_init_post_vm(kernel_args *args)
 {
 	add_debugger_command_etc("help", &cmd_help, "List all debugger commands",
-		"usage: %s [name]\n"
+		"[name]\n"
 		"Lists all debugger commands or those starting with \"name\".\n", 0);
 	add_debugger_command_etc("reboot", &cmd_reboot, "Reboot the system",
-		"usage: %s\n"
+		"\n"
 		"Reboots the system.\n", 0);
 	add_debugger_command_etc("shutdown", &cmd_shutdown, "Shut down the system",
-		"usage: %s\n"
+		"\n"
 		"Shuts down the system.\n", 0);
 	add_debugger_command_etc("gdb", &cmd_gdb, "Connect to remote gdb",
-		"usage: %s\n"
+		"\n"
 		"Connects to a remote gdb connected to the serial port.\n", 0);
 	add_debugger_command_etc("continue", &cmd_continue, "Leave kernel debugger",
-		"usage: %s\n"
+		"\n"
 		"Leaves kernel debugger.\n", 0);
 	add_debugger_command_alias("exit", "continue", "Same as \"continue\"");
 	add_debugger_command_alias("es", "continue", "Same as \"continue\"");
 	add_debugger_command_etc("message", &cmd_dump_kdl_message,
 		"Reprint the message printed when entering KDL",
-		"usage: %s\n"
+		"\n"
 		"Reprints the message printed when entering KDL.\n", 0);
 	add_debugger_command_etc("expr", &cmd_expr,
 		"Evaluates the given expression and prints the result",
-		"usage: %s <expression>\n"
+		"<expression>\n"
 		"Evaluates the given expression and prints the result.\n", 0);
 
 	debug_variables_init();

src/system/kernel/debug/debug_commands.cpp

@@ -99,7 +99,8 @@ invoke_debugger_command(struct debugger_command *command, int argc, char** argv)
 	// If we know the command's usage text, intercept "--help" invocations
 	// and print it directly.
 	if (argc == 2 && strcmp(argv[1], "--help") == 0 && command->usage != NULL) {
-		kprintf(command->usage, command->name);
+		kprintf("usage: %s ", command->name);
+		kprintf(command->usage);
 		return 0;
 	}
 
@@ -233,7 +234,8 @@ print_debugger_command_usage(const char* commandName)
 	// directly print the usage text, if we know it, otherwise invoke the
 	// command with "--help"
 	if (command->usage != NULL) {
-		kprintf(command->usage, command->name);
+		kprintf("usage: %s ", command->name);
+		kprintf(command->usage);
 	} else {
 		char* args[3] = { NULL, "--help", NULL };
 		invoke_debugger_command(command, 2, args);