How can one change the name of a tag?

Question

I have made a tag in mercurial:

hg tag release_123

Later on I found out that the name was wrong, it should be release_124. Is it pos

Answer 1

Like what @matt-ellen has said, but in reverse. Because I like to be sure the revision is tagged properly before I delete the old tag.

Here I create an example of a repo with 4 revisions.

1. View the log
2. View the tags (none, and tip)
3. Create a tag at revision #2 (using the hash)
4. View tags (now there is one, and tip)
5. Create new tag name
6. View tags (now there are two, and tip)
7. Remove bad tag name
8. View tags (now there is one, and tip)

Example:

$ hg log

changeset:   3:271cb2836c23
user:        user 
date:        Sat Mar 01 13:49:55 2014 -0600
summary:     Very important things.

changeset:   2:3c953ee62faf
user:        user 
date:        Wed Feb 26 00:17:55 2014 -0600
summary:     Did some changes.

changeset:   1:54e2275eed1e
user:        user 
date:        Tue Feb 25 01:34:31 2014 -0600
summary:     So, lots of things here.

changeset:   0:3f3e1aee4e14
user:        user 
date:        Sat Feb 22 00:42:29 2014 -0600
summary:     Inital project checkin.

$ hg tags
tip          3:271cb2836c23

$ hg tag -r 3c953ee62faf release_123
$ hg tags
tip           3:271cb2836c23
release_123   2:3c953ee62faf

$ hg tag -r 3c953ee62faf release_124
$ hg tags
tip           3:271cb2836c23
release_123   2:3c953ee62faf
release_124   2:3c953ee62faf

$ hg tag --remove release_123
$ hg tags
tip           3:271cb2836c23
release_124   2:3c953ee62faf