Re: inconsistent exit status of ((count++))

[Andrew Benton]

On 30/07/10 19:55, Stefano Lattarini wrote:
> At Thursday 29 July 2010, Andrew Benton wrote:
> > andy:~$ count=0
> > andy:~$ ((count++))
> > andy:~$ echo $?
> > 1
> > andy:~$ ((count++))
> > andy:~$ echo $?
> > 0
> I don't think it's a bug, it's just an effect of:
>    1. `((EXPR))' returning a non-zero exit status iff EXPR evaluates
>       to zero, and
That makes no sense to me. Why would evaluating an expression have a 
non-zero exit status if there was no error? That makes the exit status 
no use at all for evaluating whether an error has occurred. How can I 
check for errors if I can't rely on the exit status? How can that not be 
a bug?

Andy