feat(cli): exit 64 for command misuse - #3
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sydorovdmytro merged 1 commit intoAug 20, 2026
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Exit 2 meant both "I could not read this version" and "you called me wrong". A caller that accepts 2 from parse or type as a verdict on its input would read a renamed subcommand or a changed argument count as that verdict and stay green on the wrong answer. An option where a version was expected is the same mistake, and the usual cause is an unquoted "$tag" that expanded to nothing, so it is misuse too rather than an unreadable version. 0, 1 and 2 stay as grep and diff use them. Misuse takes EX_USAGE from sysexits, since that family has no number for it and overloads 2 instead, and its distance from the rest says it is not an answer.
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Exit 2 meant both "I could not read this version" and "you called me wrong". A caller that accepts 2 from parse or type as a verdict on its input would read a renamed subcommand or a changed argument count as that verdict and stay green on the wrong answer.
0, 1 and 2 stay as grep and diff use them. Misuse takes EX_USAGE from sysexits, since that family has no number for it and overloads 2 instead, and its distance from the rest says it is not an answer.