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@@ -7,8 +7,11 @@ import (
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)
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func exitWaitStatus(exit uint32) syscall.WaitStatus {
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- // The exit<<8 is gross but I can't find any exported symbols that would
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- // allow us to construct WaitStatus. So assume legacy UNIX encoding
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- // for a process that exits normally; i.e., not due to a signal.
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+ // There doesn't seem to be a portable way to construct a WaitStatus, but
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+ // all Unix platforms Elvish supports have 0 in the lower 8 bits for normal
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+ // exits, and put exit codes in the higher bits.
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+ //
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+ // https://cs.opensource.google/go/go/+/refs/tags/go1.19.3:src/syscall/syscall_linux.go;l=404-411;drc=946b4baaf6521d521928500b2b57429c149854e7
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+ // https://cs.opensource.google/go/go/+/master:src/syscall/syscall_bsd.go;l=89-93;drc=51297dd6df713b988b5c587e448b27d18ca1bd8a
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return syscall.WaitStatus(exit << 8)
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}
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