Hi, folks!

I am using GVim version 7.0 on Microsoft Windows XP box. I have a question
regarding Vim capability to encrypt a text file (the :X command).

These are steps how I create the encrypted text file:
- I fire up Vim ;
- Type :X and enter an encryption key twice ;
- Type some text ;
- Write the buffer into a file with :w encrypted_text.txt ;
- Quit Vim with :q ;

When I fire up Vim back and type :e encrypted_text.txt, it sweetly prompts me
for the encryption key to read the content.

The problem is when I open the from Windows Explorer by right clicking on the
file and choose `Edit with Vim` from the popped menu, Vim display the content
of the file in plain text without prompting for the encryption key that was
set to the text file.

I checked gui_w32.txt file and read about adding `Edit with Vim` entry via
registry. I do not see any parameters were set in there so I assumed, choosing
`Edit with Vim` is simple running `gvim.exe file_name.ext`. So, I manually try
running `gvim.exe encrypted_text.txt` from console and yes, it DOES NOT prompt
me for encryption key and the content of the file is displayed in plain text.

Curios about this issue, I switch to my GNU/Linux box (Slackware 10.2 with the
vim-6.8). I recreate the encrypted_text.txt and by running the command
`gvim encrypted_text.txt` from console, it DOES PROMPT me efor the encryption
key to view the content.

I have asked folks in #vim on Freenode and one of them said that when they do
the same thing as I've described here, it DOES prompt for the encryption key.

My questions are:
- Is it a `feature`? :) ;
- Any idea what possibly could cause this if it is not a `feature`?

Many thanks in advanced if any Vim enlightened user would share some knowledge.

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