[Borgbackup] 'borg create' fails with whitespaces in directory names [OS X]

[David Martin]

Good day,

I'm trying a first-time setup of borg and it chokes on whitespaces in my
directories. A minimal example:

> BORG_PASSPHRASE="$PASS" borg create --dry-run -v --stats \
>   $REPOSITORY::'{hostname}-{now:%Y-%m-%d}'    \
 >  'Users/davidm/Dev/test_repo/test dir'

I'm getting the following error:
> Users/davidm/Dev/test_repo/test dir: [Errno 2] No such file or directory: 'Users/davidm/Dev/test_repo/test dir'

Trying to escape the whitespace does not help. For example with 'test\
dir':
> Users/davidm/Dev/test_repo/test\ dir: [Errno 2] No such file or directory: 'Users/davidm/Dev/test_repo/test\\ dir'

My setup:
OSX 10.11.6
borg 1.0.10 installed from homebrew

> $ brew cask info borgbackup
> borgbackup: 1.0.10
> /opt/homebrew-cask/Caskroom/borgbackup/1.0.10 (5.4MB)
> From: https://github.com/caskroom/homebrew-cask/blob/master/Casks/borgbackup.rb

> $ python3 --version
> Python 3.6.1
> $ bash --version
> GNU bash, version 4.4.12(1)-release (x86_64-apple-darwin15.6.0)

Am I missing something or not escaping whitespaces correctly?
Otherwise I'm fairly familiar with Python and I would be happy to have a
closer look. Is there a simple way to run for example 'borg create' from
the sources?

Thanks and regards,

David