From 76d74640ae402c1078d039671275654f46fd1bb0 Mon Sep 17 00:00:00 2001
From: Eric Ye <eye@intrinsyc.com>
Date: Wed, 20 Jul 2016 16:07:04 -0700
Subject: [PATCH] Add "help" to qshell for qurt

Fixes issue #5111
---
 src/drivers/qshell/qurt/qshell.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/drivers/qshell/qurt/qshell.cpp b/src/drivers/qshell/qurt/qshell.cpp
index 5be2495450..22247145db 100644
--- a/src/drivers/qshell/qurt/qshell.cpp
+++ b/src/drivers/qshell/qurt/qshell.cpp
@@ -62,6 +62,7 @@
 #include "DriverFramework.hpp"
 
 extern void init_app_map(std::map<std::string, px4_main_t> &apps);
+extern void list_builtins(std::map<std::string, px4_main_t> &apps);
 
 using std::map;
 using std::string;
@@ -146,6 +147,10 @@ int QShell::run_cmd(const std::vector<std::string> &appargs)
 	// command is appargs[0]
 	std::string command = appargs[0];
 
+	if (command.compare("help") == 0) {
+		list_builtins(apps);
+	}
+
 	//replaces app.find with iterator code to avoid null pointer exception
 	for (map<string, px4_main_t>::iterator it = apps.begin(); it != apps.end(); ++it) {
 		if (it->first == command) {