Exit with non zero code when showing usage #36
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This PR exits with code 1 instead of 0 when
runends up showing usage pattern or help (anything that raisesDocopt::Exit).This is compatible with other linux commands, and the rationale is this:
If you are running any
runcommand in a situation where the exit code matters (for example, to run tests on CI), then in case you mistyped the command, the exit code will represent success instead of failure.