Long overdue runtime update.

runtime/ftplugin/neomuttrc.vim

@@ -0,0 +1,23 @@
+" Vim filetype plugin file
+" Language:             NeoMutt RC File
+" Previous Maintainer:  Guillaume Brogi <gui-gui@netcourrier.com>
+" Latest Revision:      2017-09-17
+" Original version copied from ftplugin/muttrc.vim
+
+if exists("b:did_ftplugin")
+  finish
+endif
+let b:did_ftplugin = 1
+
+let s:cpo_save = &cpo
+set cpo&vim
+
+let b:undo_ftplugin = "setl com< cms< inc< fo<"
+
+setlocal comments=:# commentstring=#\ %s
+setlocal formatoptions-=t formatoptions+=croql
+
+let &l:include = '^\s*source\>'
+
+let &cpo = s:cpo_save
+unlet s:cpo_save