.vim/after/plugin/manpager.vim
74dc0102
 " Vim plugin for using Vim as manpager.
 " Maintainer: Enno Nagel <ennonagel+vim@gmail.com>
 " Last Change: 2018 Feb 04
 
 command! -nargs=0 MANPAGER call s:ManPager() | delcommand MANPAGER
 
 function! s:ManPager()
   if &compatible
     set nocompatible
   endif
   if exists('+viminfofile')
     set viminfofile=NONE
   endif
   set noswapfile 
 
   setlocal ft=man
   runtime ftplugin/man.vim
   setlocal buftype=nofile bufhidden=hide iskeyword+=: modifiable
 
   " Emulate 'col -b'
   silent keepj keepp %s/\v(.)\b\ze\1?//ge
 
   " Remove empty lines above the header
   call cursor(1, 1)
   let n = search(".*(.*)", "c")
   if n > 1
     exe "1," . n-1 . "d"
   endif
   setlocal nomodified readonly
 
   syntax on
 endfunction