From: Junio C Hamano <gitster@pobox.com>
Date: Fri, 24 Jun 2016 16:44:49 GMT
Subject: Re: name for A..B ranges?
Message-ID: <xmqqh9cih6ym.fsf@gitster.mtv.corp.google.com>
In-Reply-To: <20160624160943.GA3170@sigill.intra.peff.net>

Jeff King <peff@peff.net> writes:

> On Wed, Jun 22, 2016 at 08:25:59AM +0100, Philip Oakley wrote:
>
>> Is there a common name for the A..B range format (two dots) that would
>> complement the A...B (three dots) symmetric range format's name?
>> 
>> I was looking at the --left-right distinctions and noticed that the trail
>> back to the symmetric range description was rather thin (it's buried within
>> gitrevisions:Specifying Ranges, and even then its called a symmetric
>> difference.
>
> I would just call it a range, or possibly a set difference. But I don't
> think we have any established naming beyond that.

Yup, I think "range" is the commonly used word in discussions here.
When inventing A...B as a new thing in addition to A..B, we called
the former "symmetric difference", and what is implied by that is
the latter is "asymmetric difference"; we do not say that unless we
are contrasting between the two, though.