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

[Andreas Ericsson <ae@op5.se>]

Linus Torvalds wrote:
> 
> 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.
> 

Didn't know that. The day is not a complete waste then.


> 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?
> 

Personally I'm all for namespace separation. I'm assuming the script has 
the tracker-branch hardcoded anyway, so I don't really understand why it 
would be necessary to keep other refs in a separate directory and, if it 
*is* necessary, why that subdirectory can't be .git/refs/heads/svn.

Eric mentioned earlier that the tracking-branch can't be committed to 
(ever), so the user convenience for searching other directories should 
be nearly non-existant.

Perhaps I'm missing something obvious. Perhaps I'm just stupid. Perhaps 
the pub just opened and I don't feel like reading it twice to make sure 
I understood. ;)

-- 
Andreas Ericsson                   andreas.ericsson@op5.se
OP5 AB                             www.op5.se
Tel: +46 8-230225                  Fax: +46 8-230231