Re: git filter-branch --subdirectory-filter

["James Sadler" <freshtonic@gmail.com>]

2008/5/10 Jeff King <peff@peff.net>:
> On Sat, May 10, 2008 at 01:31:37PM +1000, James Sadler wrote:
>
>> Does anybody have a script that can take an existing repo, and create
>> a new one with garbled-but-equivalent commits?  i.e.  file and
>> directory structure is same with names changed, and there is a one-one
>> relationship between lines of text in new repo and old one except the
>> lines have been scrambled?  It would be a useful tool for distributing
>> private repositories for debugging reasons.
>
> This is only lightly tested, but the script below should do the trick.
> It works as an index filter which munges all content in such a way that
> a particular line is always given the same replacement text. That means
> that diffs will look approximately the same, but will add and remove
> lines that say "Fake line XXX" instead of the actual content.
>
> You can munge the commit messages themselves by just replacing them with
> some unique text; in the example below, we just replace them with the
> md5sum of the content.
>
> This will leave the original author, committer, and date, which is
> presumably non-proprietary.
>

> <snip>

Jeff,

I have run your script on my repo and now have an obfuscated version.
When I run 'git filter-branch -subdirectory filter $DIR' on this repo, the same
problem occurs, i.e. there are fewer commits remaining than I would expect.

If I place this repo somewhere you can download it, would you be kind enough
to take a look?  I'll detail the steps required to reproduce in another post.

Thanks,

James