Zbigniew Jędrzejewski-Szmek ffb7406ba9 tests: add a smoke test for --version option in binaries ...

This is very similar to (and directly based on) the test for --help. I think
it's nice to do this: the test is very quick, but it'll catch cases where we
forgot to hook up the option, or forgot to exit after printing --version, and
it'll also increase our test coverage a bit.

2022-04-05 22:18:31 +02:00

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