Exit code can overflow, falsely indicating success

[lucaswerkmeister]

has $(for i in {1..256}; do echo go; done)
echo $?

This will appear to indicate success regardless of whether the system has go or not, because the real exit code of 256 is truncated (only the least significant eight bits are used).

[kdabir]

Interesting. Although practically has is meant to test only a handful commands, nonetheless this could be issue if args are being provided from a file or something.

I can think of putting an upper bound on the status code returned to a something smaller. Ideally lower than 127.

[kdabir]

Pushed the change, along with the test. Thanks for reporting issue.