Customizing target log | GitHub Actions output

[KSXGitHub]

Drake always logs target names before executing the targets. It would be cool if those targets is collapsible/expandible in GitHub Actions, like so:

target 1

target 1 logs

target 2

target 2 logs

This can be achieved by printing the following to stdout:

::group::target 1
target 1 logs
::endgroup::
::group::target 2
target 2 logs
::endgroup::

Request

Add a way to customize logging of target names.

[srackham]

You could filter the output e.g. using sed(1):

NO_COLOR=yes drake test | sed -r 's/^(.*): started$/::group::\1/; s/^(.*): finished.*$/::endgroup::/'