From: Bart Schaefer <schaefer@brasslantern.com>
To: zsh-users@zsh.org
Subject: Re: err_return inside function who's return value is checked
Date: Sun, 30 Dec 2012 11:35:26 -0800 [thread overview]
Message-ID: <121230113526.ZM967@torch.brasslantern.com> (raw)
In-Reply-To: <CA+zrezS6d0m9QiCeF4A4bBZam4r9anhpQqsVMBAUAKKOtCoXeA@mail.gmail.com>
On Dec 30, 2:52am, Russell Harmon wrote:
}
} why does the following print hello?
}
} (){ setopt err_return; false; echo hello } || :
}
} is this a bug?
It seems to be in the realm of what might be called unreliable behavior.
Compare bash 3.2, for example:
bash-3.2$ foo() { set -e; false; echo hello; }
bash-3.2$ foo || echo goodbye
hello
bash-3.2$ foo && echo goodbye
hello
goodbye
bash-3.2$ foo
[exits]
err_return is supposed to act just like err_exit, and err_exit does not
cause the shell to exit when used in a conditional expression, and so
err_return does not cause the function to return in that circumstance.
This obviously is a case where err_return might be permitted to behave
differently without causing too much consternation, but that's not how
it has been defined.
next prev parent reply other threads:[~2012-12-30 19:36 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-30 7:52 Russell Harmon
2012-12-30 19:35 ` Bart Schaefer [this message]
2012-12-30 20:55 ` Russell Harmon
2012-12-30 21:32 ` Bart Schaefer
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