Restore empty directories
=========================

The experimental ``git-ubuntu.experimental-emptydirfixup`` tool restores
the empty directories locally as a workaround to the :ref:`empty directory
problem <empty-directory-explanation>`. It takes a non-merge commit and
examines its parent to examine what empty directories have been lost. It
provides an equivalent replacement commit.

Run it with ``fix-head`` to replace ``HEAD`` with a commit that has empty
directories restored.

Run it with ``fix-many`` and a parameter pointing to a base commit to run
``git-rebase`` to fix a set of commits.

Note that in both cases, the parent must have the empty directories in order
for them to be copied down through the fixed up commits. In the common case
where this tool is needed, you'll be starting from an "official" git-ubuntu
import tag or branch, so this will be true in these cases. However, this does
mean that you need to use ``fix-many`` all the way back to the first commit
after such an "official" commit. If you have intermediary un-fixed commits and
then just try to apply ``fix-head`` to the end, then it won't work as the
empty directories won't get copied forward.

Example of use::

	git ubuntu clone apache2
	cd apache2
	git tag -f base
	<add commits>
	git-ubuntu.experimental-emptydirfixup fix-many base
	dpkg-buildpackage $(git ubuntu prepare-upload args) -S

See also: :ref:`empty-directory-explanation`.