Update runtime files

runtime/ftplugin/vim.vim

@@ -16,7 +16,7 @@ set cpo&vim
 
 if !exists('*VimFtpluginUndo')
   func VimFtpluginUndo()
-    setl fo< isk< com< tw< commentstring<
+    setl fo< isk< com< tw< commentstring< include< define<
     if exists('b:did_add_maps')
       silent! nunmap <buffer> [[
       silent! vunmap <buffer> [[
@@ -59,6 +59,11 @@ else
   setlocal commentstring=\"%s
 endif
 
+" set 'include' to recognize import commands
+setlocal include=\\v^\\s*import\\s*(autoload)?
+
+" set 'define' to recognize export commands
+setlocal define=\\v^\\s*export\\s*(def\|const\|var\|final)
 
 " Format comments to be up to 78 characters long
 if &tw == 0