Add tip for concatenating multiple (Python) substitutions#5157
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Signed-off-by: Christophe Bedard <bedard.christophe@gmail.com>
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This aims to resolve ros2/launch#835
This explicitly mentions the usual substitution concatenation behaviour. I think this is a good tutorial and section for this, but it only applies to Python launch files, so it only made sense to make it a
.. tip::block and not a standalone (sub)section.The example depends on ros2/launch#838.
Note
This is currently only available in Rolling (including Kilted soon), so this PR shouldn't be backported.