Re: git vs hg commit counts?

From: Jakub Narebski <jnareb@gmail.com>
Date: Oct 27, 2009, 01:14 UTC
Message-ID: <m3zl7dd4g6.fsf@localhost.localdomain>
In-Reply-To: <1256602127.29938.8.camel@Joe-Laptop.home>

Joe Perches <joe@perches.com> writes:

Show 17 quoted lines

> I'm comparing linux-kernel git vs hg repositories.
> 
> While testing some changes to scripts/get_maintainer.pl,
> I noticed that git and hg have different commit counts
> for the same files.
> 
> For instance:
> 
> $ git log --since=1-year-ago -- MAINTAINERS | \
> 	grep -P "^commit [0-9a-f]{40,40}$"  | wc -l
> 514
> 
> $ hg log --template="commit {node}\n" --date -365 -- MAINTAINERS  | \
> 	grep -P "^commit [0-9a-f]{40,40}$" | wc -l
> 601
> 
> Anyone have any understanding why?

It *might* be caused by the fact that in Mercurial commit can have only up to two parents. This means that octopus merges (merge commits with more than two parents: there are a few of them in linux-kernel history) have to be represented as a set of two-parent merges.

-- 
Jakub Narebski

http://stackoverflow.com/questions/1598759/git-and-mercurial-compare-and-contrast/1599930#1599930