If there are specific actions that should take place when editing a
GnuPG-managed buffer, an autocmd for the User event and GnuPG pattern
can be defined. For example, the following will set 'textwidth' to 72
for all GnuPG-encrypted buffers:
autocmd User GnuPG setl textwidth=72
This will be triggered before any BufRead or BufNewFile autocmds, and
therefore will not take precedence over settings specific to any
filetype that may get set.
Closesjamessan/vim-gnupg#10
Signed-off-by: James McCoy <vega.james@gmail.com>