Re: git-svn and huge data and modifying the git-svn-HEAD branch directly

On Wed, 1 Mar 2006, Andreas Ericsson wrote:
>
> Eric Wong wrote:
> > 
> > Should rev-parse be taught to be less strict and look for basenames
> > that can't be found in heads/ and tags/ in other directories?
> 
> It already does. The search order is this, for a ref named 'foo':
> 	$GIT_DIR/foo
> 	$GIT_DIR/refs/foo
> 	$GIT_DIR/refs/tags/foo
> 	$GIT_DIR/refs/heads/foo

Yes, but I think Eric wanted to avoid having to write the prefix part, 
which git won't let you do right now.

If you have a ref in .git/refs/svn-tracker/git-svn-HEAD, you would have to 
write out all of "svn-tracker/git-svn-HEAD", because unlike a "real 
branch", get_sha1() won't look into the "svn-tracker" without it being 
explicitly mentioned.

Now, some tools will actually do "for_each_ref()" and check the ref-name 
against each of them (so if you pass in "foo", it will check them afainst 
_any_ ref-subdirectory that contains "foo"). But get_sha1() won't.

We could fix get_sha1(), but part of the logic was that other 
subdirectories are special, and as such they _should_ be mentioned, so 
that a file in such a special directory isn't ever confused with a real 
branch.

But if you were to use for example .git/refs/git-svn/tracking as the 
svn-tracking reference head, and then you'd be perfectly able to use

	git log git-svn/tracking..

to see what you've done since the last svn import?

(or use HEAD, if you prefer that over "tracking")

		Linus
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