From: Junio C Hamano <gitster@pobox.com>
Date: Tue, 02 Jun 2015 18:22:19 GMT
Subject: Re: [PATCH/RFCv3 2/2] git rebase -i: warn about removed commits
Message-ID: <xmqqoaky2co4.fsf@gitster.dls.corp.google.com>
In-Reply-To: <133653833.39653.1433262736640.JavaMail.zimbra@ensimag.grenoble-inp.fr>

Remi Galan Alfonso <remi.galan-alfonso@ensimag.grenoble-inp.fr>
writes:

> In this case it is not true, because of the infile and outfile being
> identical. However sort does have a -o (-output) that I missed that
> allows avoiding using echo or writing in another file; I'm correcting
> with this.

Even though it is in POSIX, some implementation may lack it, so our
code tend to avoid "sort -o".  "echo $(sort)" is also ugly and
inefficient.  The obvious and old-fashioned would be sufficient here:

	sort -u "$todo".oldsha1 >"$todo".oldsha1+ &&
        mv "$todo".oldsha1+ "$todo".oldsha1