Provided by: git-man_1.7.9.5-1_all bug


       git-tag - Create, list, delete or verify a tag object signed with GPG


       git tag [-a | -s | -u <key-id>] [-f] [-m <msg> | -F <file>]
               <tagname> [<commit> | <object>]
       git tag -d <tagname>...
       git tag [-n[<num>]] -l [--contains <commit>] [<pattern>...]
       git tag -v <tagname>...


       Add a tag reference in .git/refs/tags/, unless -d/-l/-v is given to delete, list or verify

       Unless -f is given, the tag to be created must not yet exist in the .git/refs/tags/

       If one of -a, -s, or -u <key-id> is passed, the command creates a tag object, and requires
       a tag message. Unless -m <msg> or -F <file> is given, an editor is started for the user to
       type in the tag message.

       If -m <msg> or -F <file> is given and -a, -s, and -u <key-id> are absent, -a is implied.

       Otherwise just a tag reference for the SHA1 object name of the commit object is created
       (i.e. a lightweight tag).

       A GnuPG signed tag object will be created when -s or -u <key-id> is used. When -u <key-id>
       is not used, the committer identity for the current user is used to find the GnuPG key for
       signing. The configuration variable gpg.program is used to specify custom GnuPG binary.


       -a, --annotate
           Make an unsigned, annotated tag object

       -s, --sign
           Make a GPG-signed tag, using the default e-mail address’s key.

       -u <key-id>, --local-user=<key-id>
           Make a GPG-signed tag, using the given key.

       -f, --force
           Replace an existing tag with the given name (instead of failing)

       -d, --delete
           Delete existing tags with the given names.

       -v, --verify
           Verify the gpg signature of the given tag names.

           <num> specifies how many lines from the annotation, if any, are printed when using -l.
           The default is not to print any annotation lines. If no number is given to -n, only
           the first line is printed. If the tag is not annotated, the commit message is
           displayed instead.

       -l <pattern>, --list <pattern>
           List tags with names that match the given pattern (or all if no pattern is given).
           Running "git tag" without arguments also lists all tags. The pattern is a shell
           wildcard (i.e., matched using fnmatch(3)). Multiple patterns may be given; if any of
           them matches, the tag is shown.

       --contains <commit>
           Only list tags which contain the specified commit.

       -m <msg>, --message=<msg>
           Use the given tag message (instead of prompting). If multiple -m options are given,
           their values are concatenated as separate paragraphs. Implies -a if none of -a, -s, or
           -u <key-id> is given.

       -F <file>, --file=<file>
           Take the tag message from the given file. Use - to read the message from the standard
           input. Implies -a if none of -a, -s, or -u <key-id> is given.

           This option sets how the tag message is cleaned up. The <mode> can be one of verbatim,
           whitespace and strip. The strip mode is default. The verbatim mode does not change
           message at all, whitespace removes just leading/trailing whitespace lines and strip
           removes both whitespace and commentary.

           The name of the tag to create, delete, or describe. The new tag name must pass all
           checks defined by git-check-ref-format(1). Some of these checks may restrict the
           characters allowed in a tag name.


       By default, git tag in sign-with-default mode (-s) will use your committer identity (of
       the form "Your Name <your@email.address[1]>") to find a key. If you want to use a
       different default key, you can specify it in the repository configuration as follows:

               signingkey = <gpg-key-id>


   On Re-tagging
       What should you do when you tag a wrong commit and you would want to re-tag?

       If you never pushed anything out, just re-tag it. Use "-f" to replace the old one. And
       you’re done.

       But if you have pushed things out (or others could just read your repository directly),
       then others will have already seen the old tag. In that case you can do one of two things:

        1. The sane thing. Just admit you screwed up, and use a different name. Others have
           already seen one tag-name, and if you keep the same name, you may be in the situation
           that two people both have "version X", but they actually have different "X"'s. So just
           call it "X.1" and be done with it.

        2. The insane thing. You really want to call the new version "X" too, even though others
           have already seen the old one. So just use git tag -f again, as if you hadn’t already
           published the old one.

       However, Git does not (and it should not) change tags behind users back. So if somebody
       already got the old tag, doing a git pull on your tree shouldn’t just make them overwrite
       the old one.

       If somebody got a release tag from you, you cannot just change the tag for them by
       updating your own one. This is a big security issue, in that people MUST be able to trust
       their tag-names. If you really want to do the insane thing, you need to just fess up to
       it, and tell people that you messed up. You can do that by making a very public
       announcement saying:

           Ok, I messed up, and I pushed out an earlier version tagged as X. I
           then fixed something, and retagged the *fixed* tree as X again.

           If you got the wrong tag, and want the new one, please delete
           the old one and fetch the new one by doing:

                   git tag -d X
                   git fetch origin tag X

           to get my updated tag.

           You can test which tag you have by doing

                   git rev-parse X

           which should return 0123456789abcdef.. if you have the new version.

           Sorry for the inconvenience.

       Does this seem a bit complicated? It should be. There is no way that it would be correct
       to just "fix" it automatically. People need to know that their tags might have been

   On Automatic following
       If you are following somebody else’s tree, you are most likely using remote-tracking
       branches (refs/heads/origin in traditional layout, or refs/remotes/origin/master in the
       separate-remote layout). You usually want the tags from the other end.

       On the other hand, if you are fetching because you would want a one-shot merge from
       somebody else, you typically do not want to get tags from there. This happens more often
       for people near the toplevel but not limited to them. Mere mortals when pulling from each
       other do not necessarily want to automatically get private anchor point tags from the
       other person.

       Often, "please pull" messages on the mailing list just provide two pieces of information:
       a repo URL and a branch name; this is designed to be easily cut&pasted at the end of a git
       fetch command line:

           Linus, please pull from

                   git://git..../proj.git master

           to get the following updates...


           $ git pull git://git..../proj.git master

       In such a case, you do not want to automatically follow the other person’s tags.

       One important aspect of git is its distributed nature, which largely means there is no
       inherent "upstream" or "downstream" in the system. On the face of it, the above example
       might seem to indicate that the tag namespace is owned by the upper echelon of people and
       that tags only flow downwards, but that is not the case. It only shows that the usage
       pattern determines who are interested in whose tags.

       A one-shot pull is a sign that a commit history is now crossing the boundary between one
       circle of people (e.g. "people who are primarily interested in the networking part of the
       kernel") who may have their own set of tags (e.g. "this is the third release candidate
       from the networking group to be proposed for general consumption with 2.6.21 release") to
       another circle of people (e.g. "people who integrate various subsystem improvements"). The
       latter are usually not interested in the detailed tags used internally in the former group
       (that is what "internal" means). That is why it is desirable not to follow tags
       automatically in this case.

       It may well be that among networking people, they may want to exchange the tags internal
       to their group, but in that workflow they are most likely tracking each other’s progress
       by having remote-tracking branches. Again, the heuristic to automatically follow such tags
       is a good thing.

   On Backdating Tags
       If you have imported some changes from another VCS and would like to add tags for major
       releases of your work, it is useful to be able to specify the date to embed inside of the
       tag object; such data in the tag object affects, for example, the ordering of tags in the
       gitweb interface.

       To set the date used in future tag objects, set the environment variable
       GIT_COMMITTER_DATE (see the later discussion of possible values; the most common form is
       "YYYY-MM-DD HH:MM").

       For example:

           $ GIT_COMMITTER_DATE="2006-10-02 10:31" git tag -s v1.0.1


       The GIT_AUTHOR_DATE, GIT_COMMITTER_DATE environment variables support the following date

       Git internal format
           It is <unix timestamp> <timezone offset>, where <unix timestamp> is the number of
           seconds since the UNIX epoch.  <timezone offset> is a positive or negative offset from
           UTC. For example CET (which is 2 hours ahead UTC) is +0200.

       RFC 2822
           The standard email format as described by RFC 2822, for example Thu, 07 Apr 2005
           22:13:13 +0200.

       ISO 8601
           Time and date specified by the ISO 8601 standard, for example 2005-04-07T22:13:13. The
           parser accepts a space instead of the T character as well.

               In addition, the date part is accepted in the following formats: YYYY.MM.DD,
               MM/DD/YYYY and DD.MM.YYYY.




       Part of the git(1) suite


        1. your@email.address