new file mode 100644
--- /dev/null
+++ b/runtime/autoload/dist/man.vim
@@ -0,0 +1,196 @@
+" Vim filetype plugin autoload file
+" Language:	man
+" Maintainer:	Jason Franklin <vim@justemail.net>
+" Maintainer:	SungHyun Nam <goweol@gmail.com>
+" Autoload Split: Bram Moolenaar
+" Last Change: 	2022 Jun 18
+
+let s:cpo_save = &cpo
+set cpo-=C
+
+let s:man_tag_depth = 0
+
+let s:man_sect_arg = ""
+let s:man_find_arg = "-w"
+try
+  if !has("win32") && $OSTYPE !~ 'cygwin\|linux' && system('uname -s') =~ "SunOS" && system('uname -r') =~ "^5"
+    let s:man_sect_arg = "-s"
+    let s:man_find_arg = "-l"
+  endif
+catch /E145:/
+  " Ignore the error in restricted mode
+endtry
+
+func dist#man#PreGetPage(cnt)
+  if a:cnt == 0
+    let old_isk = &iskeyword
+    if &ft == 'man'
+      setl iskeyword+=(,)
+    endif
+    let str = expand("<cword>")
+    let &l:iskeyword = old_isk
+    let page = substitute(str, '(*\(\k\+\).*', '\1', '')
+    let sect = substitute(str, '\(\k\+\)(\([^()]*\)).*', '\2', '')
+    if match(sect, '^[0-9 ]\+$') == -1
+      let sect = ""
+    endif
+    if sect == page
+      let sect = ""
+    endif
+  else
+    let sect = a:cnt
+    let page = expand("<cword>")
+  endif
+  call dist#man#GetPage('', sect, page)
+endfunc
+
+func s:GetCmdArg(sect, page)
+
+  if empty(a:sect)
+    return shellescape(a:page)
+  endif
+
+  return s:man_sect_arg . ' ' . shellescape(a:sect) . ' ' . shellescape(a:page)
+endfunc
+
+func s:FindPage(sect, page)
+  let l:cmd = printf('man %s %s', s:man_find_arg, s:GetCmdArg(a:sect, a:page))
+  call system(l:cmd)
+
+  if v:shell_error
+    return 0
+  endif
+
+  return 1
+endfunc
+
+func dist#man#GetPage(cmdmods, ...)
+  if a:0 >= 2
+    let sect = a:1
+    let page = a:2
+  elseif a:0 >= 1
+    let sect = ""
+    let page = a:1
+  else
+    return
+  endif
+
+  " To support:	    nmap K :Man <cword>
+  if page == '<cword>'
+    let page = expand('<cword>')
+  endif
+
+  if !exists('g:ft_man_no_sect_fallback') || (g:ft_man_no_sect_fallback == 0)
+    if sect != "" && s:FindPage(sect, page) == 0
+      let sect = ""
+    endif
+  endif
+  if s:FindPage(sect, page) == 0
+    let msg = 'man.vim: no manual entry for "' . page . '"'
+    if !empty(sect)
+      let msg .= ' in section ' . sect
+    endif
+    echomsg msg
+    return
+  endif
+  exec "let s:man_tag_buf_".s:man_tag_depth." = ".bufnr("%")
+  exec "let s:man_tag_lin_".s:man_tag_depth." = ".line(".")
+  exec "let s:man_tag_col_".s:man_tag_depth." = ".col(".")
+  let s:man_tag_depth = s:man_tag_depth + 1
+
+  let open_cmd = 'edit'
+
+  " Use an existing "man" window if it exists, otherwise open a new one.
+  if &filetype != "man"
+    let thiswin = winnr()
+    exe "norm! \<C-W>b"
+    if winnr() > 1
+      exe "norm! " . thiswin . "\<C-W>w"
+      while 1
+	if &filetype == "man"
+	  break
+	endif
+	exe "norm! \<C-W>w"
+	if thiswin == winnr()
+	  break
+	endif
+      endwhile
+    endif
+    if &filetype != "man"
+      if exists("g:ft_man_open_mode")
+        if g:ft_man_open_mode == 'vert'
+	  let open_cmd = 'vsplit'
+        elseif g:ft_man_open_mode == 'tab'
+	  let open_cmd = 'tabedit'
+        else
+	  let open_cmd = 'split'
+        endif
+      else
+	let open_cmd = a:cmdmods . ' split'
+      endif
+    endif
+  endif
+
+  silent execute open_cmd . " $HOME/" . page . '.' . sect . '~'
+
+  " Avoid warning for editing the dummy file twice
+  setl buftype=nofile noswapfile
+
+  setl fdc=0 ma nofen nonu nornu
+  %delete _
+  let unsetwidth = 0
+  if empty($MANWIDTH)
+    let $MANWIDTH = winwidth(0)
+    let unsetwidth = 1
+  endif
+
+  " Ensure Vim is not recursively invoked (man-db does this) when doing ctrl-[
+  " on a man page reference by unsetting MANPAGER.
+  " Some versions of env(1) do not support the '-u' option, and in such case
+  " we set MANPAGER=cat.
+  if !exists('s:env_has_u')
+    call system('env -u x true')
+    let s:env_has_u = (v:shell_error == 0)
+  endif
+  let env_cmd = s:env_has_u ? 'env -u MANPAGER' : 'env MANPAGER=cat'
+  let env_cmd .= ' GROFF_NO_SGR=1'
+  let man_cmd = env_cmd . ' man ' . s:GetCmdArg(sect, page) . ' | col -b'
+  silent exec "r !" . man_cmd
+
+  if unsetwidth
+    let $MANWIDTH = ''
+  endif
+  " Remove blank lines from top and bottom.
+  while line('$') > 1 && getline(1) =~ '^\s*$'
+    1delete _
+  endwhile
+  while line('$') > 1 && getline('$') =~ '^\s*$'
+    $delete _
+  endwhile
+  1
+  setl ft=man nomod
+  setl bufhidden=hide
+  setl nobuflisted
+  setl noma
+endfunc
+
+func dist#man#PopPage()
+  if s:man_tag_depth > 0
+    let s:man_tag_depth = s:man_tag_depth - 1
+    exec "let s:man_tag_buf=s:man_tag_buf_".s:man_tag_depth
+    exec "let s:man_tag_lin=s:man_tag_lin_".s:man_tag_depth
+    exec "let s:man_tag_col=s:man_tag_col_".s:man_tag_depth
+    exec s:man_tag_buf."b"
+    exec s:man_tag_lin
+    exec "norm! ".s:man_tag_col."|"
+    exec "unlet s:man_tag_buf_".s:man_tag_depth
+    exec "unlet s:man_tag_lin_".s:man_tag_depth
+    exec "unlet s:man_tag_col_".s:man_tag_depth
+    unlet s:man_tag_buf s:man_tag_lin s:man_tag_col
+  endif
+endfunc
+
+let &cpo = s:cpo_save
+unlet s:cpo_save
+
+" vim: set sw=2 ts=8 noet: