From: Junio C Hamano <gitster@pobox.com>
Date: Tue, 24 May 2016 16:57:04 GMT
Subject: Re: t7800 test failure
Message-ID: <xmqq1t4r75sv.fsf@gitster.mtv.corp.google.com>
In-Reply-To: <vpqk2ijs8p2.fsf@anie.imag.fr>

Matthieu Moy <Matthieu.Moy@grenoble-inp.fr> writes:

> Armin Kunaschik <megabreit@googlemail.com> writes:
>
>> t7800 fails on systems where readlink (GNUism?) is not available.
>
> I don't think it's POSIX, but it is present on all POSIX-like systems I
> know. On which system did you get the issue?
>
>> +readlink() { ls -ld "$1" | sed 's/.* -> //'; }
>
> This is much less robust than the actual readlink. For example, if ->
> appears in the link name, it breaks.

I wouldn't allow it in our scripted Porcelain, but the environment
of our test scripts are under our control, so I do not think it is a
problem ("ls piped to sed" has been an established idiom before
readlink(1) was widely accepted, by the way).

> It would be acceptable as a fall-back if readlink is not present, but
> shouldn't activate the "ls" hack by default.

Yup.