On 1/30/19 1:17 AM, Thomas Huth wrote:

>> test ... -a ...
>>
>> is not portable (POSIX permits non-XSI systems to omit support for these
>> operators, but even where they are supported, there are some inherently
>> ambiguous inputs where you CANNOT predict whether the shell will parse
>> -a as a binary operator or as an argument to some other operator).
>> Instead, you should ALWAYS break dual tests into:
>>
>> test ... && test ...
>>
>> instead.  (Same for '-o' vs '|| test')
> 
> $ grep 'test.* -a ' configure | wc -l
> 21
> $ grep 'test.* && ' configure | wc -l
> 16
> 
> Looks like we do not really care?

Well, I care. Enough to propose a patch :)

https://lists.gnu.org/archive/html/qemu-devel/2019-02/msg00960.html

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3226
Virtualization:  qemu.org | libvirt.org