vim-patch:fcbefe74f161 (#28285)

runtime(compiler): add vimdoc

closes: vim/vim#14459

https://github.com/google/vimdoc generates vim help files from vimscript files

fcbefe74f1

Co-authored-by: Wu, Zhenyu <wuzhenyu@ustc.edu>

runtime/ftplugin/vim.vim

@@ -15,6 +15,8 @@ let b:did_ftplugin = 1
 let s:cpo_save = &cpo
 set cpo&vim
 
+compiler vimdoc
+
 if !exists('*VimFtpluginUndo')
   func VimFtpluginUndo()
     setl fo< isk< com< tw< commentstring< keywordprg<