Junio C Hamano wrote:
quoted text
> Andreas Ericsson <ae@op5.se> writes:
> 
>> However, just now I made a doodoo and need to recover a lost branch-head,
>> so git lost-found to the rescue. Or so I thought... It turns out that since
>> I've packed the unreachable refs, they haven't been pruned, and I can't
>> for the life of me figure out how to get rid of them.
> 
> Sorry, I am a bit lost on what you are trying to achieve here.
> Are you trying to find the lost tip, or are you trying to remove
> objects that are only reachable from that lost tip?
> 

Originally I was trying to find the lost tip, which was made impossible due to
the extremely large number of loose branch-tips git-lost-found reported.

quoted text
> I thought lost-found was modified not to take reflogs into
> account specifically to support the former usage.
> 

Yes, but since reflogs *are* taken into account when pruning lost tips,
lost-found reported 594 revisions.


quoted text
>> In a last-ditch desperate effort, I tried with git-unpack-objects as well,
>> but it seems broken as it fails to create the loose objects under
>> .git/objects/[0-f0-f]/. I'll look into that tonight if I get some spare time.
> 
> Don't look into that -- unpack-objects won't explode objects
> that are already available in the repository.  It is not "it
> fails" but "it was designed not to".


So how does one unpack a packfile to extract the loose objects?

mv .git/objects/pack/*.pack /tmp/git-packs
for p in /tmp/git-packs/*.pack; do git unpack-objects < $p; done

?

Seems like an awful lot of trouble. I'll look into patching
builtin-pack-objects.c instead to accept an "--ignore-reflog" flag and prune
reflog-accessible objects. Will that break anything fundamental? To me, the
ability to say "HEAD@{35}" (or "HEAD@{650}"...) is not fundamental, and I
don't know any scripts that rely on it for their operations.

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