Bug#647591: vim: encryption set with :X is not applied by :x if there are no other changes

[Michael Stummvoll]

Package: vim
Version: 2:7.3.333-1
Severity: important

Hi,
when I open a textfile with vim and set or change the encryption with :X and 
leave vim then with :x without doing any other changes, the encryption is not
applied to this file. When I change something and leave with :x or leave with
:wq without changes, the encryption is applied. 

I don't think this is the expected behavior.
I marked this bug as "important" because it could be a security issue if a 
user assumes, that his file is encrypted without rechecking that.

Greetings,
Michael

-- System Information:
Debian Release: wheezy/sid
  APT prefers testing
  APT policy: (700, 'testing'), (650, 'unstable'), (600, 'experimental')
Architecture: i386 (i686)

Kernel: Linux 3.0.0-1-686-pae (SMP w/2 CPU cores)
Locale: LANG=de_DE.utf8, LC_CTYPE=de_DE.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages vim depends on:
ii  libacl1      2.2.51-3   
ii  libc6        2.13-21    
ii  libgpm2      1.20.4-4   
ii  libselinux1  2.1.0-1    
ii  libtinfo5    5.9-2      
ii  vim-common   2:7.3.333-1
ii  vim-runtime  2:7.3.333-1

vim recommends no packages.

Versions of packages vim suggests:
ii  ctags        <none>  
ii  vim-doc      <none>  
ii  vim-scripts  20110813

-- no debconf information