From: Junio C Hamano <gitster@pobox.com>
Date: Sat, 22 Mar 2008 19:52:25 GMT
Subject: Re: Path filtered history not maximally simplified
Message-ID: <7vve3eh6yu.fsf@gitster.siamese.dyndns.org>
In-Reply-To: <47E3BCD5.2070405@viscovery.net>

Johannes Sixt <j.sixt@viscovery.net> writes:

> Ok, it turns out that M is an evil merge, i.e. the file in M is different
> from both A and 3, but in such a way that it does not show up in a diff
> --cc that has only 3 lines of context. In particular, one of the commits
> 1, 2, 3 added a single line at an isolated spot in the file, and I undid
> that addition in the merge commit M.
>
> Sorry for the noise.
>
> -- Hannes
>
> (So, *that's* why they are called "evil"!)

Just a nomenclature, but independent changes merged trivially cleanly are
"normal" merges, not evil.

Evil merges are the ones that actually change the result in such a way
that new lines in --cc output do not have _any_ counterpart in any of the
parents.