# Pack bitmaps on Git for Windows

2 messages from 2014-04-22 to 2014-04-23. Participants: Bryan Turner, Jeff King.
Thread: https://gitlist.dev/t/36471

## Bryan Turner, 2014-04-22 07:58

Subject: Pack bitmaps on Git for Windows
Message-ID: <CAGyf7-Go55mJashAi7v5zAdyeUJp2fziwjVHyPxRONZhqr18wQ@mail.gmail.com>
URL: https://gitlist.dev/e/CAGyf7-Go55mJashAi7v5zAdyeUJp2fziwjVHyPxRONZhqr18wQ%40mail.gmail.com

```
It looks like the documentation for bitmaps is being included in the
1.9.2 release of Git for Windows but the functionality itself is not
present. For example, doc\git\html\git-config.html includes settings
like these:

pack.useBitmaps

When true, git will use pack bitmaps (if available) when packing to
stdout (e.g., during the server side of a fetch). Defaults to true.
You should not generally need to turn this off unless you are
debugging pack bitmaps.

pack.writebitmaps

When true, git will write a bitmap index when packing all objects to
disk (e.g., when git repack -a is run). This index can speed up the
"counting objects" phase of subsequent packs created for clones and
fetches, at the cost of some disk space and extra time spent on the
initial repack. Defaults to false.


Repacking repositories with pack.writebitmaps set to true doesn't
write a bitmap, suggesting the functionality is not actually present.

This does not appear to be an issue with "normal" git, per the
documentation for git config at
http://www.git-scm.com/docs/git-config.

Bryan Turner

```

## Jeff King, 2014-04-23 06:32

Subject: Re: Pack bitmaps on Git for Windows
Message-ID: <20140423063251.GA20675@sigill.intra.peff.net>
URL: https://gitlist.dev/e/20140423063251.GA20675%40sigill.intra.peff.net
In-Reply-To: <CAGyf7-Go55mJashAi7v5zAdyeUJp2fziwjVHyPxRONZhqr18wQ@mail.gmail.com>

```
On Tue, Apr 22, 2014 at 05:58:10PM +1000, Bryan Turner wrote:

> It looks like the documentation for bitmaps is being included in the
> 1.9.2 release of Git for Windows but the functionality itself is not
> present. For example, doc\git\html\git-config.html includes settings
> like these:
> 
> pack.useBitmaps

I think this is a documentation problem with Git for Windows. The bitmap
code is going into v2.0, but there should be nothing (not even
documentation) in v1.9.2. I don't know how the msysgit folks build their
documentation, but I wonder if it accidentally built from current
'master' rather than v1.9.2.

You might get more information at the msysgit mailing list:

  https://groups.google.com/forum/#!forum/msysgit

-Peff

```