Hunter Damron

This is going to be a lot harder than I originally thought because we're dealing with tokens not plain strings and the token type can change in concatenation. E.g. `5...

This is not fixed by #437 which closes #356.

The expected behavior of \` being an invalid character is true for running in general, but if you run with `-E` it should go through. Unfortunately, lexer tokens are parsed...

What if you do something with a valid lever token? I think the issue is just that there's nothing after the macro name and so when it asserts that it's...

Looking at the C++ implementation, can you explain what is the purpose of using requests for the transformations? ([see here](https://github.com/ros/geometry2/blob/melodic-devel/tf2_ros/include/tf2_ros/message_filter.h#L331)) Is this just how it must be done in C++,...

I see now that I was misunderstanding the message filter. It does not actually transform the message but rather ensures that the message could be transformed. This also answers my...