Re: newbie questions about git design and features (some wrt hg)

From: Matt Mackall <mpm@selenic.com>
Date: Feb 2, 2007, 16:03 UTC
Message-ID: <20070202160317.GX10108@waste.org>
In-Reply-To: <200702021055.49428.jnareb@gmail.com>

On Fri, Feb 02, 2007 at 10:55:48AM +0100, Jakub Narebski wrote:

> How Mercurial solves problem of multiple _persistent_ branches? Does it
> add pointers to commits somewhere deeper in changelog / revlog?

Each changeset may have a branch marker.

Here's branches in use with an import of mutt's CVS history:

$ hg branches mutt-0-94 208:b2cc0abd8fe0 HEAD 207:a505693b54c1 mutt-0-93 134:d59345944030 muttintl 1:29510de8b3fc $ hg co HEAD 176 files updated, 0 files merged, 8 files removed, 0 files unresolved $ hg branch HEAD $ hg branch devel $ hg branch devel $ hg branch devel

> BTW does Mercurial have tags?

Yes. Both local and revision-controlled.

> Nice to know. You compress only file deltas, or also file revision
> metadata? Do you compress manifests (trees) and commits (or at least
> commit messages) too?

All three use the same underlying storage format, so yes.

-- 
Mathematics is the supreme nostalgia of our time.