Mail plugin changes

.vim/ftplugin/mail.vim

@@ -1 +1,26 @@
 set wrap
+
+let b:did_ftplugin = 1
+
+let b:undo_ftplugin = "setl modeline< tw< fo< comments<"
+
+" Don't use modelines in e-mail messages, avoid trojan horses and nasty
+" "jokes" (e.g., setting 'textwidth' to 5).
+setlocal nomodeline
+
+" Set 'formatoptions' to break text lines and keep the comment leader ">".
+setlocal fo+=tcql
+
+" Add n:> to 'comments, in case it was removed elsewhere
+setlocal comments+=n:>
+
+" Add mappings, unless the user doesn't want this.
+if !exists("no_plugin_maps") && !exists("no_mail_maps")
+  " Quote text by inserting "> "
+  if !hasmapto('<Plug>MailQuote')
+    vmap <buffer> <LocalLeader>q <Plug>MailQuote
+    nmap <buffer> <LocalLeader>q <Plug>MailQuote
+  endif
+  vnoremap <buffer> <Plug>MailQuote :s/^/> /<CR>:noh<CR>``
+  nnoremap <buffer> <Plug>MailQuote :.,$s/^/> /<CR>:noh<CR>``
+endif