According to the launch migration guide, <arg> should be used with default and <let> should be used with value. However, When arg is nested under an include tag it is necessary to use the value instead. You can see in the example how arg has two different syntaxes, depending on the context.
Actual behavior
Attempting to use the suggested syntax triggers the following error:
Caught exception when trying to load file of format [xml]: Attribute value of type <class 'str'> not found in Entity arg
Bug report
Required Info:
Steps to reproduce issue
Example section of XML launch file for starting Gazebo simulator
Expected behavior
According to the launch migration guide,
<arg>
should be used withdefault
and<let>
should be used withvalue
. However, Whenarg
is nested under aninclude
tag it is necessary to use thevalue
instead. You can see in the example howarg
has two different syntaxes, depending on the context.Actual behavior
Attempting to use the suggested syntax triggers the following error: