From 744c03a31fded1e115768c5667d226e5bf68f9a1 Mon Sep 17 00:00:00 2001
From: Sebastian Klose <sebastianklose@users.noreply.github.com>
Date: Tue, 28 Aug 2018 13:31:13 +0200
Subject: [PATCH] Removing unless from argument (#994)

The roslaunch API throws an exception if setting the argument but not using it.
This now forces any including launch files to provide an argument for it, even if it might not be used in the `no_rviz` case.
---
 cartographer_ros/launch/offline_node.launch | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cartographer_ros/launch/offline_node.launch b/cartographer_ros/launch/offline_node.launch
index 144afeb..bf5bd7d 100644
--- a/cartographer_ros/launch/offline_node.launch
+++ b/cartographer_ros/launch/offline_node.launch
@@ -17,7 +17,7 @@
 <launch>
   <arg name="bag_filenames"/>
   <arg name="no_rviz"/>
-  <arg unless="$(arg no_rviz)" name="rviz_config"/>
+  <arg name="rviz_config"/>
   <arg name="configuration_directory"/>
   <arg name="configuration_basenames"/>
   <arg name="urdf_filenames"/>