Add transparent gpg editing to vimrc

vimrc

@@ -128,3 +128,32 @@ inoremap <expr> k ((pumvisible())?("\<C-p>"):("k"))
 
 inoremap <C-F> :compl-filename<CR>
 
+" Transparent editing of gpg encrypted files.
+" By Wouter Hanegraaff
+augroup encrypted
+  au!
+
+  " First make sure nothing is written to ~/.viminfo while editing
+  " an encrypted file.
+  autocmd BufReadPre,FileReadPre *.gpg set viminfo=
+  " We don't want a swap file, as it writes unencrypted data to disk
+  autocmd BufReadPre,FileReadPre *.gpg set noswapfile
+
+  " Switch to binary mode to read the encrypted file
+  autocmd BufReadPre,FileReadPre *.gpg set bin
+  autocmd BufReadPre,FileReadPre *.gpg let ch_save = &ch|set ch=2
+  " (If you use tcsh, you may need to alter this line.)
+  autocmd BufReadPost,FileReadPost *.gpg '[,']!gpg --decrypt 2> /dev/null
+
+  " Switch to normal mode for editing
+  autocmd BufReadPost,FileReadPost *.gpg set nobin
+  autocmd BufReadPost,FileReadPost *.gpg let &ch = ch_save|unlet ch_save
+  autocmd BufReadPost,FileReadPost *.gpg execute ":doautocmd BufReadPost " . expand("%:r")
+
+  " Convert all text to encrypted text before writing
+  " (If you use tcsh, you may need to alter this line.)
+  autocmd BufWritePre,FileWritePre *.gpg '[,']!gpg --default-recipient-self -ae 2>/dev/null
+  " Undo the encryption so we are back in the normal text, directly
+  " after the file has been written.
+  autocmd BufWritePost,FileWritePost *.gpg u
+augroup END