# Re: VCS comparison table

- From: Ryan Anderson \<hidden\>
- Date: 2016-06-15 22:42:44 
- List: git
- Page: https://ratatoskr.run/git/2016/06/7291603
- Thread: https://ratatoskr.run/git/2016/06/7291303/t/2.md

```text
On 10/17/06, Aaron Bentley [ref] wrote:
> > In other words, the empty merge is totally semantically empty even in the
> > bazaar world. Why does it exist?
>
> It exists because it is useful.  Because it makes the behavior of bzr
> merge uniform.  Because in some workflows, commits show that a person
> has signed off on a change.

In the Git world that happens via "git tag -s", i.e, a
cryptographically strong "signoff".
(There's also the secondary convention of appending Signed-off-by: to
email-applied patches, but that's something that would translate
effectively to any other system, since it's outside the SCM.)
```