Re: Pulling tags from git.git

[Junio C Hamano <junkio@cox.net>]

Andreas Ericsson <ae@op5.se> writes:

> Imagine Linus, getting his "please pull" emails and doing so only to
> find dozens of temporary tags fetched by the pull. Junio's patch (if I
> read it correctly) unconditionally fetches *ALL* tags reachable from
> the top of the commit-chain, which means there is no longer any way to
> keep temporary tags in a repo from which someone else will pull.

I thought we made fetch made by such a promiscous pull not to
follow tags, so that wouldn't be a problem.  Tag following is
only to happen when you track other's branches.  That is:

	$ git pull git://git.kernel.org/pub/scm/git/git.git master

would store my "master" branch tip only in your .git/FETCH_HEAD and
you merge it immediately, without following my tags, while:

	$ git pull git://git.kernel.org/pub/scm/git/git.git master:origin

(which is what you get by "git pull" without arguments) would
follow my tags, because you are storing the branch head into
your local branch "origin".

> I for one riddle my repos with temporary tags whenever I'm trying
> something I'm not so sure of, or find an interesting bug or a design
> decision I'm not 100% sure of. Perhaps I should rather do this with
> branches, but imo branches are for doing work, whereas tags just mark
> a spot in the development so I easily can find them with gitk or some
> such.

I also have many throwaway unannotated tags.  Whenever I have a
WIP that I want to split up or reorder, I tag the tip of that
topic branch with "git tag anchor-blah" tag, rewind the tip to
the commit before the one I want to redo, and then do this
repeatedly:

	$ git diff -R anchor-blah >P.diff
        $ ... edit P.diff to keep the part I want to apply first
        $ git apply --index P.diff
        $ ... maybe edit a bit further
        $ git commit

until there is no difference between the rewound-and-redone tip
and anchor-blah other than whatever clean-ups I do during the
above cycle.  Propagating such throw-away tags is not very
useful.  And I think it is reasonable to say that throw-away
tags tend to be unannotated.