" Transparent editing of gpg encrypted files.
  augroup encrypted
      au!
      " First make sure nothing is written to ~/.viminfo while editing
      " an encrypted file.
      autocmd BufReadPre,FileReadPre      *.gpg,*.asc set viminfo=
      " We don't want a swap file, as it writes unencrypted data to disk
      autocmd BufReadPre,FileReadPre      *.gpg,*.asc set noswapfile
      " Switch to binary mode to read the encrypted file
      autocmd BufReadPre,FileReadPre      *.gpg,*.asc set bin
      autocmd BufReadPre,FileReadPre      *.gpg,*.asc let ch_save = &ch|set ch=2
      autocmd BufReadPre,FileReadPre      *.gpg,*.asc let shsave=&sh
      autocmd BufReadPre,FileReadPre      *.gpg,*.asc let &sh='sh'
      autocmd BufReadPre,FileReadPre      *.gpg,*.asc let ch_save = &ch|set ch=2
      autocmd BufReadPost,FileReadPost    *.gpg,*.asc '[,']!gpg2 --decrypt --default-recipient-self 2> /dev/null
      autocmd BufReadPost,FileReadPost    *.gpg,*.asc let &sh=shsave
      " Switch to normal mode for editing
      autocmd BufReadPost,FileReadPost    *.gpg,*.asc set nobin
      autocmd BufReadPost,FileReadPost    *.gpg,*.asc let &ch = ch_save|unlet ch_save
      autocmd BufReadPost,FileReadPost    *.gpg,*.asc execute ":doautocmd BufReadPost " . expand("%:r")
      " Convert all text to encrypted text before writing
      autocmd BufWritePre,FileWritePre    *.gpg,*.asc set bin
      autocmd BufWritePre,FileWritePre    *.gpg,*.asc let shsave=&sh
      autocmd BufWritePre,FileWritePre    *.gpg,*.asc let &sh='sh'
      " GPG Binary
      autocmd BufWritePre,FileWritePre    *.gpg '[,']!gpg2 --encrypt --default-recipient-self 2>/dev/null
      " GPG Ascii armor
      autocmd BufWritePre,FileWritePre    *.asc '[,']!gpg2 --armor --encrypt --default-recipient-self 2>/dev/null
      autocmd BufWritePre,FileWritePre    *.gpg,*.asc let &sh=shsave
      " Undo the encryption so we are back in the normal text, directly
      " after the file has been written.
      autocmd BufWritePost,FileWritePost  *.gpg,*.asc silent u
      autocmd BufWritePost,FileWritePost  *.gpg,*.asc set nobin
  augroup END