Re: [RFC PATCH 1/3] test-tool: don't fake up BUG() exits as code 99

Jeff King [off-list ref] writes:

I do agree that an environment variable would be a better selector than
"this code is linked against test-tool". I thought so even back in:

  https://lore.kernel.org/git/20180507090109.GA367@sigill.intra.peff.net/ (local)

:) That message also covers the flip-side case discussed earlier in this
thread: why calling abort() unconditionally in the test suite can be a
pain.

Nice.  Thanks.