VCS comparison table

[Erik Bågfors]

On 10/24/06, Carl Worth <cworth at cworth.org> wrote:
> On Mon, 23 Oct 2006 19:26:57 -0500, "Matthew D. Fuller" wrote:
> >
> > On Mon, Oct 23, 2006 at 04:24:30PM -0700 I heard the voice of
> > Linus Torvalds, and lo! it spake thus:
> > >
> > > The problem? How do you show a commit that is _common_ to two
> > > branches, but has different revision names in them?
> >
> > Why would you?
>
> Assume you've got two long-lived branches and one periodically gets
> merged into the other one. The combined history might look as follows
> (more recent commits first):
>
>  f   g
>  |   |
>  d   e
>  |\ /
>  b c
>  |/
>  a
>
> The point is that it is extremely nice to be able to visualize things
> that way. Say I've got a "dev" branch that points at f and a "stable"
> branch that points at g. With this, a command like:
>
>         gitk dev stable
>
> would result in a picture just like the above. Can a similar figure be
> made with bzr? Or only the following two separate pictures:

The above picture can easily be created with bzr if you have a
utility/plugin that does it. There is none that does it yet, but there
are no problems doing one.

Of course, in such a context revision numbers have no use.  But see,
revision numbers is not mandatory in bzr, so that's not a problem.

I haven't really had a need for such a tool, but I do see where it can
be very useful to have.

>  f    g
>  |    |
>  d    e
>  |\   |
>  b c  c
>  |/   |
>  a    a
>

This is what you would get if you visualize the two separate branches,
and not the common repository.

/Erik

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