From: Junio C Hamano <gitster@pobox.com>
Date: Thu, 01 Sep 2016 22:20:57 GMT
Subject: Re: Are --first-parent and --ancestry-path compatible rev-list options?
Message-ID: <xmqqd1knuura.fsf@gitster.mtv.corp.google.com>
In-Reply-To: <1BC836ACA8C741AD9732122B3B198752@PhilipOakley>

"Philip Oakley" <philipoakley@iee.org> writes:

> The user question was, given a commit 'J', and a future commit 'H'
> (typically a branch tip such as 'master'), find those commits that are
> :
> A) merges
> B) on the first parent DAG chain of the future commit 'H'
> C) children of the given commit 'J'

The answer then is that there is no such single step operation.

In the picture, if D or E were a merge from a side branch that does
not have anything to do with 'J', "log --first-parent --merges" will
not exclude it (i.e. C won't be fulfilled by --first-parent --merges).