Re: pull/push inconsistencies

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On 5/16/07, Junio C Hamano <junkio@xxxxxxx> wrote:
"Martin Langhoff" <martin.langhoff@xxxxxxxxx> writes:
> When tracking several branches from a repo, git-pull does a fetch (of
> all the remote heads) and merges _only the tracking branch currently
> checked out_. That's ok. However, if I checkout another tracking
> branch and issue git-pull, the merge does not happen because git-fetch
> finds nothing new on the remote side. git-pull should merge anyway if
> remotes/origin/<trackinghead> is ahead of the local head.

That's my expectation and I am a bit surprised if it doesn't.

I'll try get a repro script then.

> My second issue is that git-push does not update
> remotes/<repo>/<headname> so if I do git-push && gitk --all it looks
> as if I haven't pushed. Misleading again. :-/

The standard answer is not to push into a live repository
without understanding what you are doing.

I don't quite understand that statement. I think I know what I am
doing: telling git-push to push new commits from matching local refs
to remote refs safely (only ff, unless there's a + in the
configuration for that head).

Why can't git match that the remote is the remote in .git/refs/remotes
and put the right data SHA1 in .git/refs/remotes/<headname>?

...

And pushing into live repository using 'matching refs' is almost
always a mistake, unless the user knows what he is doing.

Hey - I'm only using it because you've recommended it as a migration
path! ;-) Combined with tracking branches, it works great.

> Third issue - if I do
>
>  # we start with a cloned repo that is in sync with
>  # its "origin" repo. No local commits to speak of...
>  # git-fetch brings updates to 3 remote branches - none affecting the current
>  # checked out branch...
>   git-fetch
>   git-commit some/path
>   git-push
>
> the output of git-push will show _4_ branches being pushed. For some
> reason git-push says that it's pushing remotes/origin/branchname ->
> origin/branchname for all the branches fetched recently -- and not
> modified! I expect only _1_ branch to be named during push - the only
> one.

git-push without parameters and configuration pushes matching
branches.  This has been true from day one.  Again, I think we
should be able to make this safer so that "git-push" in cloned
repository would do something more restricted (perhaps limiting
to refs/heads?), but I do not think of a universally acceptable
canned configuration.

There are 2 things that I see as wrong...
- local .git/refs/remote/origin/foo and refs/heads/foo match - why is
git-push talking about updating them?
- matching refs should ignore .git/refs/remote

But perhaps I'm naive in thinking that the 'matching refs' thing will
ignore the local .git/refs/remotes directory. AFAICS it's the only
sane thing to do.

cheers,


martin
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