apt-btrfs-snapshot traceback when fuse FS in fstab

[Robert C Jennings]

Given an fstab with a legal fuse entry like:
 encfs-reverse#/home/rcj /home/rcj.enc fuse defaults 0 0

(From http://bazaar.launchpad.net/~vgough/encfs/trunk/view/head:/encfs/encfs.pod#L159)

We will get a traceback when parsing the fstab.

$ sudo apt-btrfs-snapshot supported
Traceback (most recent call last):
  File "/usr/bin/apt-btrfs-snapshot", line 92, in <module>
    apt_btrfs = AptBtrfsSnapshot()
  File "/usr/lib/python3/dist-packages/apt_btrfs_snapshot.py", line 113, in __init__
    self.fstab = Fstab(fstab)
  File "/usr/lib/python3/dist-packages/apt_btrfs_snapshot.py", line 76, in __init__
    entry = FstabEntry.from_line(line)
  File "/usr/lib/python3/dist-packages/apt_btrfs_snapshot.py", line 49, in from_line
    return FstabEntry(*args[0:6])
TypeError: __init__() missing 3 required positional arguments: 'mountpoint', 'fstype', and 'options'

Workaround is to change the fstab entry from:
 encfs-reverse#/home/rcj /home/rcj.enc fuse defaults 0 0
to:
 /home/rcj /home/rcj.enc fuse.encfs-reverse defaults 0 0

I have opened this bug to request an enhancement to fstab parsing and to document the workaround so that others can find it in the interim.

Additional info:
$ lsb_release -rd
Description: Ubuntu 14.04.1 LTS
Release: 14.04

$ apt-cache policy apt-btrfs-snapshot
apt-btrfs-snapshot:
  Installed: 0.3.4.2
  Candidate: 0.3.4.2