From: Matthieu Moy <matthieu.moy@grenoble-inp.fr>
Date: Wed, 21 Aug 2013 13:05:10 GMT
Subject: Re: [PATCH] repack: rewrite the shell script in C.
Message-ID: <vpq1u5n9ou1.fsf@anie.imag.fr>
In-Reply-To: <5214B6F8.6030102@googlemail.com>

Stefan Beller <stefanbeller@googlemail.com> writes:

> On 08/21/2013 10:49 AM, Matthieu Moy wrote:
>>> +	if (start_command(&cmd))
>>> > +		return 1;
>> A warning message would be welcome in addition to returning 1.
>> 
>
> Johannes Sixt proposes to retain the return value of
> the sub process, which I'd agree on.

Yes.

> I'd expect the pack-objects to bring up the warning as
> the stderr is untouched in the command invocation.

I was more thinking of weird cases like failure to fork or so. But
according to api-run-command.txt:

  . If a system call failed, errno is set and -1 is returned. A diagnostic
    is printed.

So you actually don't need it. In this case, following Johannes's
suggestion, you'd return -1 from the main function, which is unusual but
AFAICT is OK.

-- 
Matthieu Moy
http://www-verimag.imag.fr/~moy/