From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jay Soffian <jaysoffian@gmail.com>
Subject: Re: [1.8.0] Tracking empty directories
Date: Wed, 2 Feb 2011 18:23:07 -0500
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To: Jakub Narebski <jnareb@gmail.com>
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On Wed, Feb 2, 2011 at 6:56 AM, Jakub Narebski <jnareb@gmail.com> wrote=
:
> The problem with backward compatibility is twofold. =C2=A0First and m=
ore
> important is while git supports empty tree object (it has it hardcode=
d
> for some time, as it is necessary e.g. for initial diff, or merging
> unrelated branches without common ancestor), and there is no problem
> with entry for empty tree in a tree object
>
> =C2=A0040000 tree 22d5826c087c4b9dcc72e2131c2cfb061403f7eb =C2=A0empt=
y
>
> there is (supposedly) problem when checking out such tree (see email
> referenced above) with an old git.
>
> Second is that tracking empty directories would require extension to =
the
> git index (storing trees in index, like we store submodules)... but t=
hat
> is purely local matter.

Instead of using an empty tree, construct a tree containing a single
sentinel file whose contents are a suitable warning not to delete/edit
said file using pre-1.8.0 git. Meanwhile git-1.8.0 never writes the
file to the filesystem. Too ugly?

j.