test_ok2/changelog/1999.bugfix

Required options added via ``pytest_addoption`` will no longer prevent
using --help without passing them.
Fix --help with required options This works by adding an argparse Action that will raise an exception in order to skip the rest of the argument parsing. This prevents argparse from quitting due to missing required arguments, similar to the way that the builtin argparse --help option is implemented by raising SystemExit. Fixes: #1999 2017-06-01 04:55:30 +08:00			Required options added via ``pytest_addoption`` will no longer prevent
			`using --help without passing them.`