What happens to tags of squashed commits?

Question

If I have commit A tagged with tag e.g. tag-A, and then the next commit B tagged with tag-B; if I squash these 2 commits what happens to the tags? Will both be assigned to the squashed commit?

Answer 1

The tags won't move because a rebase rewrites history. The original commits will have the tags since tags don't move. Here's a picture:

Before:

(HEAD) B - tag-B
       |
       A - tag-A
       |
       X

After:

         B - tag-B
         |
(HEAD) C A - tag-A
       |/
       X

Here C is the squash of A and B. It starts a completely new history, in which A and B will not participate. The branch head will move over to C and will proceed from there.