Re: EXIT_CANCELED

[Eric Blake]

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According to Jim Meyering on 10/24/2009 9:23 AM:
>> +case `env -- -i PATH="$PATH" echo fail` in
>> +  pass) ;;
>> +  *) fail=1 ;;
>> +esac
> 
> Thanks, but that cannot work (expecting to invoke ./-i) unless you
> have "." in your PATH.  Since I don't, that new test fails for me.
> 
> This patch makes it pass.  Does it do what you intended?

Yes, I tested with . on my PATH, and didn't catch that.  Maybe it would be
smarter to rewrite the test to exercise -u instead of -i, as that is less
problematic, but your patch looks good for now.

> -case `env -- -i PATH="$PATH" echo fail` in
> +case `PATH="$(pwd):$PATH"; export PATH; env -- -i echo fail` in
>    pass) ;;
>    *) fail=1 ;;
>  esac
> 
> BTW, this PATH= setting has no effect,
> unless your shell lacks an "echo" built-in.

I guess some of the confusion I'm seeing is how execvp behaves when
encountering a shell script, as opposed to a binary.  So there's
definitely some thought required to make sure we are writing a portable
test of env.

- --
Don't work too hard, make some time for fun as well!

Eric Blake             address@hidden
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