bzr->git: keep empty directories

hello,

when converting a repo from bzr to git:

mkdir freeplane-git1 cd freeplane-git1 git init . bzr fast-export --plain --export-marks=../marks.bzr ../trunk/ | git fast-import --export-marks=../marks.git git checkout

Empty directories are not contained in the git working index. This is because of the --plain option, which "Excludes metadata to maximise interoperability" and thus does not support empty directories (http://doc.bazaar.canonical.com/plugins/en/fastimport-plugin.html).

However, when I use "--no-plain" (which according to above documentation exports empty directories), git cannot handle it:

$ ./freeplane2git.sh Initialized empty Git repository in /home/felix/git/freeplane-git1/.git/ 15:56:09 Calculating the revisions to include ... 15:56:09 Starting export of 4290 revisions ... fatal: This version of fast-import does not support feature commit-properties. fast-import: dumping crash report to .git/fast_import_crash_3915 bzr: broken pipe

I already tried to hack bzr-fastimport's exporter.py so that it does not emit commit properties but emits empty directories but i was not successful.

So is there another way to preserve empty directories or shall I report a bug on bzr fast-export?

Many thanks in advance!