Re: Q: "git diff" using tag names

From: Jakub Narebski <jnareb@gmail.com>
Date: Oct 28, 2011, 13:21 UTC
Message-ID: <m3aa8l5k1y.fsf@localhost.localdomain>
In-Reply-To: <4EAABC15020000A100007D9D@gwsmtp1.uni-regensburg.de>

"Ulrich Windl" <Ulrich.Windl@rz.uni-regensburg.de> writes:

> When using a somewhat older git (of SLES11 SP1 SDK),

Nb. you can check version of git with "git --version".

Show 8 quoted lines

>                                                      I could not
> find a way to "git diff" between two tag names; I can only diff
> between two commit numbers. I can display a changeset using "git
> show", but that's not what I wanted.
>
> Is it possible to get the diff I want using older versions, and is
> such a feature implemented in the current version? If so, since
> when?

From the very beginning in Git you can use tag name where you need commit identifier; Git would use commit that tag points to (will dereference or peel a tag).

That is not possible in some [censored] version control systems; I am looking at you, Subversion!

So if you can do

  $ git show v0.9
  $ git show v1.0

you can also do

  $ git diff v0.9 v1.0

and

  $ git log v0.9..v1.0

-- 
Jakub Narębski